Some standard content:
Record number: 10136-2002
HG/T2697-2001
This standard is a revision of the recommended chemical industry standard HG/T2697-1995 "Casting Polyurethane Rubber Series" based on the production situation of the polyester industry and the requirements of foreign drawings. The differences between this standard and HIG/T 2697-1995: Table 2 adds the performance requirements of low hardness tight polyurethane rubber rollers. The dimension tolerance of the cavity roller is increased from N grade to P grade: the surface roughness index of the rubber roller is added.
Chapter 8 "Usage Requirements" is used as a prompt appendix to the standard. Appendix A of this standard is an appendix to the standard, and Appendix B is a prompt appendix. From the date of implementation, this standard will replace HG/T2697-1995 at the same time. This standard was proposed by the Policy and Regulations Department of the former State Bureau of Petroleum and Chemical Industry. This standard is sponsored by the Rubber Products Branch of the National Technical Committee for Standardization of Rubber and Rubber Products. The responsible drafting unit of this standard is Nanjing Jinsanli Polyurethane Co., Ltd. (formerly Nanjing Rubber Factory), and the participating drafting unit of this standard is Panzhihua Gangcheng Polymer Engineering Co., Ltd. The main drafters of this standard are Lin Hong, Huang Jianbo, Li Wenzuo, and Wang Kai. This standard was first issued on May 5, 199512
1 Scope
Chemical Industry Standard of the People's Republic of China
Part 2: Polyurethane Roller
Rubber roller
Part 2: Polyurethane Roller
HG/T 2697—2001
Replaces HIG/I26971995
This standard specifies the product classification, requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of cast polyurethane rubber rollers (hereinafter referred to as polyurethane rubber rollers). This standard is applicable to various cast polyurethane rubber rollers used in metallurgy, papermaking, textile and other industries. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown are valid. All standards will be revised. The parties using this standard should explore the possibility of using the latest version of the following mark. GB/T 528-1998 Determination of tensile stress-strain properties of vulcanized rubber and thermoplastic rubber (ISO 37: 1994) GB/T 529-1999 Determination of tear strength of vulcanized rubber and thermoplastic rubber (trouser-type, right-angle and crescent-shaped test specimens) (EUVIS0) 34-1 19943
GB/T 531-1999
Test method for indentation hardness of rubber using pocket durometer (idt ISO 7619-1986) GB/T 16831981 Determination of fixed deformation and compression deformation of vulcanized rubber GB/T1690-1992 Test method for liquid resistance of vulcanized rubber (neqISO1817:1985) GB/T3512-1983 (89) Rubber hot air aging test method (neqISO188:1976) IIG/T2413.1-1992 Determination of apparent hardness of rubber rollers by PJ durometer method (eqVIS0) 7267-3:1988) HG/T 2413. 2—[992
Determination of apparent hardness of rubber rollers Shore durometer method (idt IS () 6123-2: 1986) HG/T 2450-—1999
Determination of apparent hardness of rubber yokes Rubber International Smash Tester Method (idt.TS06123-1*1986) IHG/T 3077—1999
HG/T 3078—2001
HG/T 3079—1999
3 Product marking
3.1 Marking method
Hardness requirements for rubber and plastic rollers (idt1S06123-1:1988)Surface characteristics of rubber and plastic rollers (idtIS06123-2:1988)Dimensional tolerances of rubber and plastic yokes (idllIS06123-3:1985)Products are marked in the following order:
Product name, hardness (hardness value), specification blade (nominal diameter × length) standard number, 3.2 Marking example
a. Polyurethane rubber with an international rubber hardness of 85, a nominal diameter of 250mm, and a length of 1600mm is marked as: Polyurethane rubber 85IRHD250X1600HG/T 2697200l. Polyurethane rubber roller with A hardness of 85, nominal diameter of 250mm and length of 1600mm is marked as: Approved by the State Economic and Trade Commission on January 24, 2002 and implemented on July 1, 2002
HG/T2697—2001
Polyurethane rubber roller 85A250×1600HG/T2697—2001c Zhao's (PJ) hardness of 35, nominal diameter of 250 mm and length of 1600 mm is marked as: Polyurethane rubber roller 35P.J250×1600IIG/T2697—20014 Product structure
Polyurethane rubber roller consists of a metal core, an adhesive layer and an outer covering urethane rubber layer (as shown in Figure 1). 1—rubber layer, 2 metal core 13 adhesive layer Figure 1 Structural diagram
5 Requirements
5. 1 Hardness of polyurethane rubber
5.1.1 Hardness regulations
The hardness of the polyurethane waist roller can be selected by the manufacturer and the ordering party (hereinafter referred to as the supply and demand parties) from the following hardnesses, which are stipulated as the hardness of the rubber.
a. International rubber hardness (IRHD).
b. Shore A hardness (A).
C. Shore J (PJ) hardness (PJ).
5.1.2 Hardness tolerance and hardness difference with the same root
Hardness tolerance and hardness difference with the same root shall be in accordance with the provisions of Table 1. Table 1 Hardness tolerance and hardness difference with the same root
Nominal hardness value
Rubber international hardness
PJ hardness
Shore or I) degree
Note: Special requirements can be determined by negotiation between the supply and demand parties14
Nominal hardness allowable deviation
HG/T 2697 --2001
Physical and liquid resistance properties of rubber materials for polyurethane adhesives 5.2
The physical and liquid resistance properties of rubber materials for polyurethane rubber rollers shall comply with the requirements of Table 2. Table 2 Physical and liquid resistance properties of rubber
Fashion body properties
Hardness (Shore A)
Tensile strength
Elongation at break
Hot air aging
70℃×72h
Change rate of tensile strength (reduction)
Change rate of elongation at break (reduction)
Tear strength (right angle type)
Compression permanent deformation 20% compression 24h×20℃water
Light gasoline
Change rate of weight
(Room temperature×72h）
Petroleum ether
Xylene
10320±3|30
0~4. 5 0~-4
40±5/75±5
190 +5/95_5
0~-3 ~2. 5b~-2. 50~-2. 0
1 When using rubber with international hardness or I. I hardness, it can be determined by negotiation between the supply and demand parties. 2 Physical properties of hardness within other ranges shall be determined by negotiation between the supply and demand parties. 3 Physical properties other than those in this table shall be determined by negotiation between the supply and demand parties. 5.3 Dimensional tolerance of polyurethane rubber roller
0~-300~-250~200~-20
0--400--400~~350~-35
5.3.1 When the ratio of the length of the rubber roller coating to the diameter of the roller core is within 15 times, the diameter tolerance and the length tolerance of the coating rubber shall be as specified in Table 3. If it cannot meet the demand requirements, the supply and demand parties shall select according to the grade specified in HG/T3079. Table 3
Diameter tolerance and coating length tolerance
Rubber roller diameter
>100-~160bzxZ.net
160~250
259-~400
400-~>630
Diameter tolerance
Rubber coating length
1 000-~1 600
>1 000~2 500
Rubber coating length tolerance
5.3.2 The roundness, roundness and height tolerance of rubber shall be selected by both the supplier and the buyer according to the grades specified in HG/T 3079. 5.4 Surface characteristics of rubber roller
5.4.1. The surface of the polyurethane rubber roller shall not be allowed to have defects such as mechanical damage that affect the use requirements. The defects such as impurities, bubbles, sand holes, etc. shall be selected by the supply and demand parties according to the different needs of the rubber roller and the provisions of IIG/T3078--2001. Appropriate levels. Note: 3.2 of IIG/T3078-2001 states that "any geometric shape with an area of 0.1m2 shall be a square area. 5.4.2 The surface roughness of the polyurethane rubber roller shall reach the level of 4.2.2 (fine grinding grade) in HG/T3078-2001 unless otherwise specified. 5.4.3 The surface roughness value of the polyurethane rubber saw shall be selected according to the provisions of Table 4. When the table cannot meet the user's requirements, it can be determined by negotiation between the supply and demand parties and indicated in the drawings or technical agreements. 1.
Rubber Jun International Alkalinity Department A Hardness
Zhao (PJ) Hardness
Surface T Type
Polishing and Fine Grinding
Standard Light
Rough Machining
It is a supplementary series value for Class I and Class II parameters. I
HG/T 2697—2001
Table 4 Surface roughness of rubber sheet
Hardness of rubber layer
50-~70
120-~70
70:-10
Roughness Ra (μtn)
5.5 Quality requirements between rubber layer and metal core of polyurethane rubber sheet3.2
The rubber layer and metal core of polyurethane rubber roller should be firmly adhered and there should be no cracking.5.6 Technical requirements for metal core of polyurethane rubber rollerThe technical requirements for metal core of polyurethane rubber roller should comply with the provisions of Appendix AA1.6 Test methods
6.1 Determination of physical properties of rubber for polyurethane rubber sheet0.4
6.1.1 The tensile strength and elongation at break of rubber shall be determined in accordance with the provisions of GB/T 528 (using [type test specimens]).6.1.2 The hardness test of rubber shall be carried out in accordance with GB/T 531. 6.1.3 The heat and air aging test of rubber shall be carried out in accordance with GB/T 3512. 6.1.4 The determination of the tear strength (right angle) of rubber shall be carried out in accordance with GB/T529. 6.1.5 The determination of the permanent deformation of rubber under compression shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The hardness test of polyurethane rubber roller
The hardness test of polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 The international hardness of rubber shall be carried out in accordance with HG/T 2450. 6.2.3 The PJ hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber roller
Determination of dimensional tolerance of polyurethane rubber roller shall be carried out in accordance with HG/T3079. 6.4 Surface processing quality of polyurethane rubber roller
Surface processing quality of polyurethane rubber saw shall be carried out in accordance with HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber roller
Surface roughness of polyurethane rubber roller shall be carried out in accordance with HG/T3078. 6.6 Delamination and degumming of polyurethane rubber roller Delamination and degumming of polyurethane rubber roller shall be checked by knocking with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber roller HG/T 2697—2001
Test method for metal core of polyester rubber roller shall be carried out in accordance with A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one according to the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out for new products and trial production of old products in the factory when one of the following situations occurs. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface thickness of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 19, unless otherwise specified. It should reach the level 4.2.2 (fine grinding grade) in HG/T3078-2001. 5.4.3 The surface roughness value of polyurethane rubber saw shall be selected according to the provisions of Table 4. When the table cannot meet the user's requirements, it can be determined by negotiation between the supply and demand parties and indicated in the drawings or technical agreement.
Rubber Jun International Alkalinity Department A Hardness
Zhao (PJ) Hardness
Surface T type
Polishing and grinding
Standard light
Rough processing
It is a supplementary series value of Class I and Class II parameters. I
HG/T 2697—2001
Table 4 Surface roughness of rubber sheet
Hardness of rubber layer
50-~70
120-~70
70:-10
Roughness Ra (μtn)
5.5 Quality requirements between rubber layer and metal core of polyurethane rubber sheet 3.2
The rubber layer and metal core of polyurethane rubber roller shall be firmly adhered to each other and there shall be no cracking. 5.6 Technical requirements for metal core of polyurethane rubber roller The technical requirements for metal core of polyurethane rubber roller shall comply with the provisions of Appendix AA1. 6. Test method
6.1 Determination of physical properties of rubber for polyurethane rubber sheet 0.4
6.1.1 The tensile strength and elongation at break of rubber shall be determined in accordance with the provisions of GB/T 528 (with [ 6.1.2 The hardness test of the rubber shall be carried out in accordance with GB/T 531. 6.1.3 The heat and air aging test of the rubber shall be carried out in accordance with GB/T 3512. 6.1.4 The determination of the tear strength (right angle) of the rubber shall be carried out in accordance with GB/T529. 6.1.5 The determination of the permanent deformation of the rubber under compression shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The hardness test of the polyurethane rubber roller
The hardness test of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 The international hardness of rubber shall be carried out in accordance with HG/T 2450. 6.2.3 The Zhao (PJ) hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber rollers
Determination of dimensional tolerance of polyurethane rubber rollers shall be carried out in accordance with HG/T3079. 6.4 Surface processing quality of polyurethane rubber rollers
Surface processing quality of polyurethane rubber saws shall be carried out in accordance with HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber rollers
Surface roughness of polyurethane rubber rollers shall be carried out in accordance with HG/T3078. 6.6 Delamination and degumming defects of polyurethane rubber rollers Delamination and degumming defects of polyurethane rubber rollers shall be checked by knocking on the mountain with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber rollers HG/T 2697—2001
The metal core test method for polyester rubber rollers shall be carried out in accordance with the provisions of A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one in accordance with the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out in any of the following situations: new products and old products shall be tested for trial production and identification. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface area of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 19, unless otherwise specified. It should reach the level 4.2.2 (fine grinding grade) in HG/T3078-2001. 5.4.3 The surface roughness value of polyurethane rubber saw shall be selected according to the provisions of Table 4. When the table cannot meet the user's requirements, it can be determined by negotiation between the supply and demand parties and indicated in the drawings or technical agreement.
Rubber Jun International Alkalinity Department A Hardness
Zhao (PJ) Hardness
Surface T type
Polishing and grinding
Standard light
Rough processing
It is a supplementary series value of Class I and Class II parameters. I
HG/T 2697—2001
Table 4 Surface roughness of rubber sheet
Hardness of rubber layer
50-~70
120-~70
70:-10
Roughness Ra (μtn)
5.5 Quality requirements between rubber layer and metal core of polyurethane rubber sheet 3.2
The rubber layer and metal core of polyurethane rubber roller shall be firmly adhered to each other and there shall be no cracking. 5.6 Technical requirements for metal core of polyurethane rubber roller The technical requirements for metal core of polyurethane rubber roller shall comply with the provisions of Appendix AA1. 6. Test method
6.1 Determination of physical properties of rubber for polyurethane rubber sheet 0.4
6.1.1 The tensile strength and elongation at break of rubber shall be determined in accordance with the provisions of GB/T 528 (with [ 6.1.2 The hardness test of the rubber shall be carried out in accordance with GB/T 531. 6.1.3 The heat and air aging test of the rubber shall be carried out in accordance with GB/T 3512. 6.1.4 The determination of the tear strength (right angle) of the rubber shall be carried out in accordance with GB/T529. 6.1.5 The determination of the permanent deformation of the rubber under compression shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The hardness test of the polyurethane rubber roller
The hardness test of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 The international hardness of rubber shall be carried out in accordance with HG/T 2450. 6.2.3 The Zhao (PJ) hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber rollers
Determination of dimensional tolerance of polyurethane rubber rollers shall be carried out in accordance with HG/T3079. 6.4 Surface processing quality of polyurethane rubber rollers
Surface processing quality of polyurethane rubber saws shall be carried out in accordance with HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber rollers
Surface roughness of polyurethane rubber rollers shall be carried out in accordance with HG/T3078. 6.6 Delamination and degumming defects of polyurethane rubber rollers Delamination and degumming defects of polyurethane rubber rollers shall be checked by knocking on the mountain with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber rollers HG/T 2697—2001
The metal core test method for polyester rubber rollers shall be carried out in accordance with the provisions of A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one in accordance with the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out in any of the following situations: new products and old products shall be tested for trial production and identification. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface area of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 19J) Hardness
Surface T type
Polishing and fine grinding
Standard light separation
Rough machining
is a supplementary series value for Class I and Class II parameters. I
HG/T 2697—2001
Table 4 Surface roughness of rubber sheet
Hardness of rubber layer
50-~70
120-~70
70:-10
Roughness Ra (μtn)
5.5 Quality requirements between rubber layer and metal core of polyurethane rubber sheet 3.2
The rubber layer and metal core of polyurethane rubber roller shall be firmly adhered to each other and there shall be no cracking. 5.6 Technical requirements for metal core of polyurethane rubber roller The technical requirements for metal core of polyurethane rubber roller shall comply with the provisions of Appendix AA1. 6. Test method
6.1 Determination of physical properties of rubber for polyurethane rubber sheet 0.4
6.1.1 The tensile strength and elongation at break of rubber shall be determined in accordance with the provisions of GB/T 528 (with [ 6.1.2 The hardness test of the rubber shall be carried out in accordance with GB/T 531. 6.1.3 The heat and air aging test of the rubber shall be carried out in accordance with GB/T 3512. 6.1.4 The determination of the tear strength (right angle) of the rubber shall be carried out in accordance with GB/T529. 6.1.5 The determination of the permanent deformation of the rubber under compression shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The hardness test of the polyurethane rubber roller
The hardness test of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 The international hardness of rubber shall be carried out in accordance with HG/T 2450. 6.2.3 The Zhao (PJ) hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber rollers
Determination of dimensional tolerance of polyurethane rubber rollers shall be carried out in accordance with HG/T3079. 6.4 Surface processing quality of polyurethane rubber rollers
Surface processing quality of polyurethane rubber saws shall be carried out in accordance with HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber rollers
Surface roughness of polyurethane rubber rollers shall be carried out in accordance with HG/T3078. 6.6 Delamination and degumming defects of polyurethane rubber rollers Delamination and degumming defects of polyurethane rubber rollers shall be checked by knocking on the mountain with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber rollers HG/T 2697—2001
The metal core test method for polyester rubber rollers shall be carried out in accordance with the provisions of A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one in accordance with the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out in any of the following situations: new products and old products shall be tested for trial production and identification. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface area of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 19J) Hardness
Surface T type
Polishing and fine grinding
Standard light separation
Rough machining
is a supplementary series value for Class I and Class II parameters. I
HG/T 2697—2001
Table 4 Surface roughness of rubber sheet
Hardness of rubber layer
50-~70
120-~70
70:-10
Roughness Ra (μtn)
5.5 Quality requirements between rubber layer and metal core of polyurethane rubber sheet 3.2
The rubber layer and metal core of polyurethane rubber roller shall be firmly adhered to each other and there shall be no cracking. 5.6 Technical requirements for metal core of polyurethane rubber roller The technical requirements for metal core of polyurethane rubber roller shall comply with the provisions of Appendix AA1. 6. Test method
6.1 Determination of physical properties of rubber for polyurethane rubber sheet 0.4
6.1.1 The tensile strength and elongation at break of rubber shall be determined in accordance with the provisions of GB/T 528 (with [ 6.1.2 The hardness test of the rubber shall be carried out in accordance with GB/T 531. 6.1.3 The heat and air aging test of the rubber shall be carried out in accordance with GB/T 3512. 6.1.4 The determination of the tear strength (right angle) of the rubber shall be carried out in accordance with GB/T529. 6.1.5 The determination of the permanent deformation of the rubber under compression shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The hardness test of the polyurethane rubber roller
The hardness test of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 The international hardness of rubber shall be carried out in accordance with HG/T 2450. 6.2.3 The Zhao (PJ) hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber rollers
Determination of dimensional tolerance of polyurethane rubber rollers shall be carried out in accordance with HG/T3079. 6.4 Surface processing quality of polyurethane rubber rollers
Surface processing quality of polyurethane rubber saws shall be carried out in accordance with HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber rollers
Surface roughness of polyurethane rubber rollers shall be carried out in accordance with HG/T3078. 6.6 Delamination and degumming defects of polyurethane rubber rollers Delamination and degumming defects of polyurethane rubber rollers shall be checked by knocking on the mountain with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber rollers HG/T 2697—2001
The metal core test method for polyester rubber rollers shall be carried out in accordance with the provisions of A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one in accordance with the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out in any of the following situations: new products and old products shall be tested for trial production and identification. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface area of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 194 The determination of the rubber compound's tear strength (right angle type) shall be carried out in accordance with GB/T529. 6.1.5 The determination of the rubber compound's compression permanent deformation shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The determination of the hardness of the polyurethane rubber roller
The determination of the hardness of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A hardness shall be carried out in accordance with HG/T 2413.2 6.2.2 Rubber international hardness shall be carried out in accordance with HG/T 2450. 6.2.3 Zhao's (PJ) hardness shall be carried out in accordance with IIG/T 2413.1. 6.3 Determination of dimensional tolerance of polyurethane rubber rollers
Determination of dimensional tolerance of polyurethane rubber rollers shall be carried out in accordance with the provisions of HG/T3079. 6.4 Surface processing quality of polyurethane rubber rollers
Surface processing quality of polyurethane rubber rollers shall be carried out in accordance with the provisions of HG/T3078 using measuring tools and daily measurement methods. 6.5 Determination of surface roughness of polyurethane rubber rollers
Surface roughness of polyurethane rubber rollers shall be carried out in accordance with the provisions of HG/T3078. 6.6 Delamination and degumming of polyurethane rubber rollers Delamination and degumming of polyurethane rubber rollers shall be checked by knocking with a rubber hammer. 16
6.7 Test method for metal core of polyurethane rubber rollers HG/T 2697-2001
Test method for metal core of polyester rubber rollers shall be carried out in accordance with the provisions of A2 in Appendix A. 7 Inspection rules
7.1 Factory inspection
The hardness requirements, dimensional tolerances and surface quality of polyurethane rubber rollers shall be inspected one by one according to the provisions of 5.2, 5.3 and 5.4 of this standard. If any one of them fails, the rubber roller shall be regarded as unqualified. 7.2 Type inspection
7.2.1 Type inspection shall be carried out for new products and trial production of old products in the factory when one of the following situations occurs. b. When there are major changes in the design, process, production equipment, management and other aspects of the normal production of products (including major changes in personnel requirements) that may affect the product performance.
e. When the factory test results are significantly different from the previous type test. d. When the national quality management agency proposes the requirement for type inspection. 7.2.2 The items of type inspection are all the items required by this standard. 7.2.3 Under normal circumstances, the hardness, tensile strength and elongation at break of the rubber compound shall be tested once a month: hot air aging, tear strength and compression set shall be tested once a quarter. If any item of the physical and liquid resistance of the rubber compound is unqualified, double the number of samples shall be taken for retesting of the unqualified item. If it is still unqualified, the batch of rubber compound shall be judged as unqualified. 8 Marking, packaging, transportation, storage
8.1 Marking
Each rubber roller shall have the following markings:
a. Manufacturing unit
d. Production period
e: Number
f. Inspection pass stamp
8.2 Packaging
Each polyurethane rubber roller shall be protected with moisture-proof opaque paper or soft packaging materials, and then fixed to the iron box or box using the shaft heads at both ends. There shall be a distance of 30~50mm between the inner wall of the box and the rubber roller, and between the rubber rollers. The packaging of the rubber rollers picked up at this port or at the bank shall be agreed upon by the supply and demand parties. 8.3 Transportation and storage
8.3.1 During transportation and storage, polyurethane rubber rollers shall be protected from direct sunlight, rain, pressure and impact, and shall be prohibited from contact with acids, alkalis, greases and organic solvents, and shall be kept 2 meters away from heat sources. 8.3.2 The polyurethane rubber roller shall be stored in a room at -10-40℃ and relative humidity below 85%. The rubber layer of the rubber roller shall not be under pressure. During storage, it shall be rotated 180 degrees every half sheet.
8.3.3 The polyurethane rubber roller shall be stored under the conditions specified in this article. From the date of production, the storage period is 1 year. 17
A1 Technical requirements for metal cores
HG/T 2697—2001
Appendix A
(Appendix to the standard)
Technical requirements for metal cores for polyurethane rubber rollers
41.1 The metal roller core is a hollow cylinder with uniform wall thickness. A1.2 The structural dimensions and surface thickness of the metal roller core shall comply with the provisions of the agreement between the manufacturer and the user. A1.3 The material of the metal roller core can be cast iron, steel plate, steel pipe and other metal materials. The wall thickness of cast iron core should not be less than 10mm in general. The wall thickness of core made of steel plate or steel pipe should meet the requirements of Table A1. Table A1 Nominal diameter and wall thickness of metal core
Nominal diameter of metal core
100250
>250~-500
Roller core with a head diameter greater than 100mm should have ventilation holes at both ends. A1.5
5The surface of metal core shall not have defects such as sand holes and pores. A1.6
There must be a center hole at both ends of the metal core shaft. A1.7
The metal core should have shape and position tolerance (runout, coaxiality, cylindricity) requirements and be consistent with the polyurethane rubber roller after rubber coating. The requirements for metal static balance shall be agreed upon by the supply and demand parties. A1.8
Test method
Specification and size of metal core
Specification and size of metal are measured with measuring tools such as calipers and tape measures. A2.2 Surface quality of metal core
Surface quality of metal core is checked by visual inspection and corresponding measuring tools. A2.3 Static balance determination of metal core
The value and position of the metal core balance weight are determined under the static state of the metal core, that is, the shaft neck of the metal core is placed on a horizontal support frame. In the unbalanced state, the heavier part is rotated downward, and the weight and position of the lighter part to be placed on the counterweight can be determined. 18
HG/T 2697—
Appendix B
(Instructions)
Product use requirements and purchase and storage methods
Polyurethane rubber rollers should be stored in a cool and ventilated room (-10-～10℃), and should not be close to heat sources or exposed to cold air. B1
The rubber part should be wrapped with kraft paper or plastic film, and then packed with blankets, etc. Do not leave it naked and avoid light. B2
Be sure to support the roller neck with a spacer, and do not support the rubber part. During storage, in order to prevent the rubber structure from deforming, the roller body should be rotated regularly (preferably once every half a month). B4
Do not use rubber targets taken from cold places, especially in cold winter. If you use a rubber roll taken from the warehouse with a brush, there is a risk of the rubber line B5
breaking.
When the polyurethane rubber roller starts to operate, it should be gradually and evenly pressurized. It is best to grind the rubber roller slightly before using it for a long time. If wrinkles or cracks appear on the surface of the rubber roll during use, it should be removed in time and polished again. The polyurethane rubber roller must not be subjected to pressure when it stops operating. 194 The determination of the rubber compound's tear strength (right angle type) shall be carried out in accordance with GB/T529. 6.1.5 The determination of the rubber compound's compression permanent deformation shall be carried out in accordance with GB/T1683. 6.1.6 The liquid resistance of the polyurethane rubber shall be carried out in accordance with GB13/T1690. 6.2 The determination of the hardness of the polyurethane rubber roller
The determination of the hardness of the polyurethane rubber roller shall be carried out in accordance with Chapter 4 of IIG/T3077. 6.2.1 Shore A ha
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