HG/T 3078-2001 Surface characteristics of rubber and plastic rollers HG/T3078-2001 Standard download decompression password: www.bzxz.net

Registration No.: 10139-2002
HG/T3078-2001
This standard is equivalent to the international standard TS06123-2·1988 "Rubber and plastic coating series. Specification Part 2: Surface characteristics", which is a revision of HG/T3078-1988 (1997) Classification of surface characteristics of rubber rollers. The main technical differences between this standard and HG/T3078-1988 (1997) are: the addition of the foreword and ISO foreword, the addition of the method of measuring the surface roughness of rubber rollers with a surface roughness measuring instrument. The addition of Appendix A on the relationship between surface treatment and surface roughness. Appendix A of this standard is a reminder appendix.
This standard replaces HG/T3078-1988 (1997) from the date of implementation. This standard was originally issued by the Policy and Regulations Department of the State Administration of Petroleum and Chemical Industry. This standard is under the jurisdiction of the Rubber Products Branch of the National Technical Committee for Standardization of Rubber and Rubber Products. The drafting units of this standard are: Beijing Rubber Products Design Institute. Hebei Jizhou Chunfeng Yinxing Rubber Roller Co., Ltd., Shandong Lihua Waterproof Building Materials Co., Ltd., and Wuxi Sixth Rubber Factory. The main drafters of this standard are: Gao Qian, Zeng Meng, Zhang Huaiqin, and Sun Xiaodong. This standard was first published in 1988, and was adjusted to an industry standard in 1997 and renumbered as HG/I307819881997). 25
ISO Foreword
ISO (International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing international standards is usually carried out by ISO () technical committees. Any member body interested in the subject of an established technical committee has the right to participate in the committee. International organizations, governmental and non-governmental, in liaison with ISO may also participate in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all aspects of electrotechnical standardization. The draft international standard adopted by the technical committee is sent to the member groups for voting. When it is published as an international standard, at least 75% of the voting member groups must vote in favor.
International Standard 1SO6123-2 was developed by ISO/TC45 Rubber and Rubber Products Technical Committee. This standard replaces the first edition (1SO6123-2:1983) and adds the measurement of surface roughness and an appendix. The appendix gives the relationship between surface treatment and surface roughness.
ISO6123 "Rubber or Plastic Coated Rollers-Specifications" includes the following parts: Part 1 Hardness requirements
- Part 2 Surface characteristics
Part 3 Dimensional tolerances
Appendix A of this part of ISO6123 is a reference. 26
Chemical Industry Standard of the People's Republic of China
Surface characteristics
for Rubber-or plastics-
covered rollers
HG/T3078—2001
id1 ISO 6123-2 : 1988
Replaces HG/T3078—1988(1997)
Rubber and plastic rollers (hereinafter referred to as rubber rollers) are made of cylindrical metal roller cores covered with rubber or warping materials. According to the requirements of use, rubber rollers of various sizes and hardness grades can be made. 1 Scope
This standard specifies the classification of rubber rollers according to surface quality or surface defects and surface treatment, and specifies the measurement method of surface roughness.
2 Reference standards
The provisions contained in the following subtitles constitute the provisions of this standard through reference in this standard. When this standard is released, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T2941-1991 Standard temperature, humidity and time for environmental conditioning and testing of rubber (eqVISO471:1983) GB3505-1983 Surface roughness terms, surface and its parameters GB6062-1985 Profile method Stylus surface roughness measuring instrument Profile recorder and center line profile (neISO1880:1979)
GB/T10610-1998 Product geometry specification Surface structure Profile method Rules and methods for evaluating surface structure (eqVISO4288:1996)
3 Surface quality
3.1 General
The production process and raw materials of rubber rollers may cause sand holes, bubbles and impurities on the surface of the coating. The number, size and location of the allowable surface defects shall be agreed upon by the supplier and the buyer.
3.2 Grades
Rubber rollers shall be graded according to the number and size of the following defects. x/y grade
means:
defect area is not greater than x mm, which is an allowable defect: in any 0.1m\ coating area, there shall be no more than two defects with an area between xmm2 and ymm, which is an allowable defect; the defect area is greater than ymm2 is an unacceptable defect. Approved by the State Economic and Trade Commission on 2002-01-24 and implemented on 2002-07-01
the values ​​of x and y shall be agreed upon by the supply and demand parties.
HG/T 3078—2001
If there is no special requirement for surface quality, it can be determined as \N\ grade. Example: Intermediate surface quality is determined as:
means:
defect area is not greater than 0.5 mm, which is an allowable defect; in any 0.1m2 coating area, there shall be no more than two defects with an area between 0.5mm2 and 2mm, which is an allowable defect. When the defect area is larger than J·2nm, it is considered as an unacceptable defect. Note: The supplier and the device shall agree on the following levels to select the required quality grade: 0.1/0.3 level
(0. 5/2 grade
2/5 grade
5/10 grade
4 Surface treatment
The surface treatment of the rubber coating depends on the application. After consultation between the supply and demand parties, the surface treatment is expressed as the surface treatment type (see 4.1) or the maximum value of the surface roughness (see 4.3). 4.1 Surface treatment method description and classification
Table 1 gives the classification of surface treatment and the main surface treatment methods commonly used (see 4.2). The hardness of the rubber roller and the material of the coating layer play a decisive role in the type and structure of surface treatment. Table 1 Surface processing
4.2 Description of surface treatment Type
Standard polishing
Rough processing
Surface treatment
Surface treatment
Surface structures of types 1 to 4 are formally treated, and those that are not treated are rough. The required surface treatment type is selected by consultation between the supply and demand parties.
Polishing treatment
First Class
Soft rubber surface is velvety, hard rubber (hard rubber) or plastic surface is smooth. There should be no visible scratches and abrasions, but sporadic abrasion spots are allowed.
However, not all surfaces require polishing. 4.2.2 Second Class Fine Mushroom
The rubber surface has slight visible scratches and grinding marks, which cannot be touched. 4.2.3 Third Class Standard Polishing
The surface of the rubber roller has visible wear marks and abrasion marks, which can be touched by hand. 4.2.4 Category IV Rough processing
The surface of the rubber roller is visible during processing and can be felt by touch. 4.2.5 Category V Rough
The surface of the rubber roller has not been processed in any way. For example: the surface of a vulcanized rubber roller or a roughly cast plastic coated roller has fabric-like marks. 28
4.2.6 Category S Special treatment
HG/T 3078—2001
This category is applicable to the surface treatment of rubber rollers other than those in 4.2.1 to 4.2.5. For example: precision cast plastic rollers or surface treatments with special structures and uses as agreed by the supply and demand parties. 4. 3 Surface roughness characteristics
4.3.1 Requirements
The surface treatment of the rubber roller shall be expressed in the following units according to the agreement between the supplier and the buyer: a. Ra: Arithmetic mean deviation of the profile (see 2.9 in GB3505-1983) b. Rz: Ten-point height of micro-roughness (see 2.7 in GB3505--1983) The roughness of the rubber roller surface shall be visibly uniform. 4.3.2 Test method
4.3.2.1 Test instrument profilometer
The surface roughness shall be measured using the M-type contact profilometer specified in GB6062. Except for special provisions, the basic parameters and metrological characteristics of the instrument shall comply with the provisions of (G136062,
The instrument shall be equipped with a support so that it can be placed on the curved surface!: The indication accuracy shall be calibrated according to the calibration value. For example: Calibration is performed using a randomly prepared roughness reference sample. a. Stylus angle: 1.57rad(90°)
Stylus tip radius maximum 5 μm
Stylus average height static measurement force: maximum 4 mNb. Sampling length, evaluation length and cut-off wavelength Sampling length I, and evaluation length In shall be implemented in accordance with GB 10610. Note: The rubber roller will encounter parameters during measurement: cut-off wavelength In, sampling length 1. and evaluation length Ln. For given Ra parameters, see Table 2 and Table 3. Table 2 Parameters of given RwwW.bzxz.Net
2Rax10
10≤RS50
4.3.2.2 Test conditions
a Temperature
Table 3 Parameters of given Rz
The test shall be carried out at the standard temperature (23±2)℃ specified in GB/T2941. To ensure that the temperature of the rubber roller is uniform, it shall be placed at the test temperature for a period of time before the test and the test temperature shall be recorded. b. Coating surface
Before measurement, the coating surface should be carefully cleaned to remove dust and other dirt during storage. The coating surface should not be damaged during cleaning. Note: Isopropyl alcohol is suitable for cleaning the coating surface.
4. 3.2. 3 Test steps
. Measuring points
HG/T 3078—2001
For rubber rollers with a coating length of no more than 2.5m, the roughness should be measured at five locations. Around the middle of the rubber roller, measure at every 120\, a total of three locations, and measure two locations at 10% of the coating length at both ends of the rubber roller. For rubber rollers with a coating length of more than 2.5m, the roughness should be measured at nine locations. Around the middle of the rubber roller, measure one place every 120°, for a total of three places: around the 10% of the coating length at both ends of the rubber roller, measure one place every 120°, for a total of six places, b, operation
Place the rubber roller to be tested firmly, so that its main axis is horizontal, and the surface roughness measurement area is at the highest position. Place the measuring instrument on the rubber roller and debug it so that the correct measuring force of the stylus at the average height is applied to the surface. Take a measuring point in each measuring area and move the stylus in a direction parallel to the roller axis. The sampling length for each measurement should be the evaluation length plus the pre-measured length and the post-measured length. 4.3.3 Result expression
Each measuring area shall be in accordance with the provisions of 4.3.2.3a. According to the provisions of GB/T10610, measure the arithmetic mean deviation Ra of the profile or the ten-point height Rz of the micro-roughness respectively.
The surface roughness value of the rubber roller coating shall be read in accordance with the provisions of 4.3.2.3a and the average value shall be taken. 4.3.4 Repeatability and reproducibility
The difference between the average values ​​of two results measured on the same sample using conventional and correct operating methods shall not exceed 20 times. The difference between the average values ​​of two independent test results measured on the same sample by two operators using conventional and correct operating methods in two laboratories under the same conditions shall not exceed 50% for more than 20 times. 30
HG/T3078—2001
Appendix A
(Reminder)
Relationship between surface treatment and surface roughness
With the agreement of both the supplier and the buyer, the surface roughness can be specified according to the surface treatment (see 4.1 and 4.2) or the surface roughness value (see 4.3). Table A1 gives the relationship between surface treatment and surface roughness. It should be pointed out that due to different hardness and to some extent different materials, the same coating surface treatment will produce different roughness values. Table AI Surface Treatment Performance Ra and Rz Values ​​
Coating Rubber Hardness
Shore A
PJ Hardness
Surface Roughness
Standard Polishing
50~-70
120--70
70~100
Roughness Value. Maximum value, rm
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