Some standard content:
ICS58.080.40
Registration No.: 10311--2002
Coal Industry Standard of the People's Republic of China
MT 317 -- 2002
Solid woven carcase of conveyor helting used in coalmine2002-04-08 Issued
National Economic and Trade Commission
2002-09-01 Implementation
MT317-2002
Articles 4.2, 4.5, 4.6 and 4.7 of this standard are mandatory, and the rest are recommended. This standard replaces MT/T317-1992 from the date of implementation. Compared with MT/T317-1992, this standard adjusts and revises the model and technical requirements of the belt core. The first standard adds models of M1600 and above. The technical requirements of the first standard add the provisions for the core material. The technical requirements of the first standard increase the assessment index of the weft cotton content of the core, and make corresponding adjustments to the assessment index of the warp cotton content of the core.
The technical requirements of the first standard adjust the linear density, tensile strength and elongation at break in the warp (weft) direction. The technical requirements of the first standard cancel the assessment of the braiding structure of the whole core. The technical requirements of this standard cancel the assessment of the moisture regain of the whole core. Appendix A of this standard is a prompt appendix.
This standard is proposed by the China Coal Industry Association. This standard is under the jurisdiction of the Anti-static and Flame Retardant Materials Branch of the Coal Mine Safety Standardization Technical Committee. The drafting units of this standard: Shanghai Branch of the China Coal Research Institute, Baixiang County Lida Webbing Co., Ltd., Tianjin Tianyun Fabric Manufacturing Co., Ltd.
The main drafters of this standard: Gu Yamin, Wang Liping, Zheng Qi, Hua Rushuan, and Lv Yuanhua. This standard is interpreted by the Antistatic and Flame Retardant Materials Branch of the Coal Mine Safety Standardization Technical Committee. 1 Scope
Coal Industry Standard of the People's Republic of China
Solid woven carcase of conveyorbeltingused in coalmineMT317—2002
Replaces MT/T317-1992
This standard specifies the product model, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation of solid woven carcases of conveyorbeltingused in coalmine.
This standard applies to solid woven carcases of conveyorbeltingused in coalmine (hereinafter referred to as carcases). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T4666-1995 Determination of the length of woven fabrics GB/T4667-1995 Determination of the width of woven fabrics FZ65003-1995 Test methods for physical and mechanical properties of strands for special industrial use 3 Belt core models
The models are divided into: M680, M800, N1000, M1250, M1400, M1600, M1800, M2000, M2240 and above M2240. Model example:
indicates that the nominal tensile strength of the belt core in the warp direction is 800N/mm, indicating the integral belt core of the conveyor belt for coal mines
4 Technical requirements
4.1 Appearance quality
The belt core must be woven evenly, with a clean surface and straight weaving edges, and must not have missing threads, skipped yarns, oil stains, bows and choppy phenomena. 4.2 Structure of the belt core
4.2.1 Material of the belt core
4.2.1.1 The warp force lines of the belt core shall be made of nylon or polyester fibers. 4.2.1.2 The weft force lines of the belt core must be made of nylon fibers or fibers with higher strength and greater tensile deformation performance than nylon fibers. 4.2.2 Number of layers of the belt core
The number of layers of the core shall comply with the provisions of Table 1.
Approved by the State Economic and Trade Commission on April 8, 2002 and implemented on September 1, 2002
Number of layers ≥
Cotton content of the belt core
The cotton content of the belt core shall comply with the provisions of Table 2. Type
Warp ≥
Latitude ≥
Width of the core
MT 317-2002
The width of the core can be determined by negotiation between the supplier and the buyer, and the limit deviation of the width shall comply with the provisions of Table 3. Table 3
Nominal width
Limit deviation
Length of the core
≤1000
Width ±1%
The length of a single roll of the core shall be determined by negotiation between the supplier and the buyer, and the limit deviation of each roll shall be ±0.5% of the total length, and no splicing is allowed in the middle. Density of the force line of the core
The density of the force line of the core shall comply with the provisions of Table 4. Table 4
Tensile strength of the force line of the core in warp ≥
Latitude ≥
Tensile strength of the force line of the core
Tensile strength of the force line of the core shall comply with the provisions of Table 5. Table 5
Warp ≥
Weft ≥
Tension elongation at break of the force line of the core
Tension elongation at break of the force line of the core shall comply with the provisions of Table 6. Table 6
Warp ≥
Weft ≥
Test method
Identification of core fiberbzxZ.net
Use either of the following two methods.
≥M2240
≥M2240
Root/10cm
≥M2240
≥M2240
≥M2240
5.1.1 Reagent coloring method
5.1.1.1 Preparation of test pieces:
MT 317—2002
The test piece should be cut at least 50mm away from the edge of the fabric, and the length of the test piece is 100mm. For the warp fibers (stress line), the number of test pieces should be at least 20; for the weft fibers (stress line), the number of test pieces should be at least 10; the distribution position of the test pieces should be representative of different parts of the sample and should not be too concentrated.
5.1.1.2 Equipment and reagents:
5.1.1.2.1 Beaker: 200mL.
5.1.1.2.2 Reagents: Dissolve 20g of iodine in 100mL of saturated potassium iodide solution. Note: Preparation of saturated potassium iodide solution: Dissolve 144g of potassium iodide in 100g of distilled water and store in a brown bottle. 5.1.1.3 Determination steps:
Put the prepared test piece in the iodine-potassium iodide solution for 1min, then take it out and rinse it with distilled water. The undyed fiber is polyester fiber, the brown fiber is nylon fiber, and the light blue fiber is vinylon fiber. 5.1.2 Infrared spectroscopy
The determination is made by comparing the infrared spectrum of the measured fiber with the infrared spectrum of the standard fiber. 5.2 Determination of the number of layers of the belt core
The number of layers of the belt core is determined by visual inspection.
5.3 Determination of the cotton content of the core
5.3.1 Preparation of test pieces
The test pieces should be cut from the sample with the fabric edge removed and should be at least 50mm away from the fabric edge. The length and width are both 100mm. The number of test pieces is 2.
5.3.2 Instruments and equipment
5.3.2.1 Ruler: The measuring range is 0~500mm and the accuracy is 1mm. 5.3.2.2 Electronic scale: The measuring range is 0~500g and the accuracy is 0.1g. 5.3.2.3 Measuring table: The tabletop is flat and smooth, the width is greater than the width of the fabric to be measured, and the length is not less than 1m. 5.3.3 Determination steps
5.3.3.1 The test piece should be placed at a temperature of (23±2)℃ and a relative humidity of 65%±5% for 24h before being measured. 5.3.3.2 During the measurement, first remove the cotton thread and synthetic fiber from the specimen along the warp direction, and weigh the mass of the cotton thread in the warp direction and the total mass of the warp (cotton and synthetic fiber).
5.3.3.3 Similarly, remove the cotton thread and synthetic fiber in the weft direction, and remove the cotton thread from the cotton thread and synthetic fiber strands, and weigh the mass of the cotton thread in the weft direction and the total mass of the weft.
5.3.3.4 Result expression:
The following measurement results should be recorded and calculated:
a) The mass of cotton thread in the warp direction and the total mass in the warp direction of each specimen, and calculate the cotton thread content in the warp direction. Cotton thread content in the warp direction = (mass of cotton thread in the warp direction/total mass of warp) × 100%b) The mass of cotton thread in the weft direction and the total mass in the weft direction of each specimen, and calculate the cotton thread content in the weft direction. Weft cotton thread content = (Weft cotton thread mass/Weft total mass) × 100% c) The arithmetic mean of the warp and weft cotton thread content of the above two groups of specimens. 5.4 Measurement of the width of the belt core
The measurement of the width of the belt core shall be carried out in accordance with the provisions of GB/T4667. 5.5 Measurement of the length of the belt core
The measurement of the length of the belt core shall be carried out in accordance with the provisions of GB/T4666. 5.6 Determination of the linear density of the belt core
5.6.1 Preparation of test pieces
MT317-2002
The test piece shall be cut from the sample with the edge of the fabric removed and shall be at least 50mm away from the edge of the fabric. The length and width shall be 100mm and the number of test pieces shall be 3.
5.6.2 Determination steps
Tear off the prepared samples one by one from the edge to obtain the number of linear roots of the fabric in the warp (weft) direction within a length of 100mm, which is the linear density of the belt core. 5.6.3 Result Expression
The following measurement results shall be recorded and calculated:
a) The warp density of each specimen;
b) The weft density of each specimen;
c) The arithmetic mean of the three values of the warp density and the weft density. 5.7 Determination of tensile strength of the force line of the belt core
The tensile strength of the force line of the belt core shall be determined in accordance with the provisions of 5.2 of FZ65003-1995. 5.8 Determination of elongation at break of the force line of the belt core The elongation at break of the force line of the belt core shall be determined in accordance with the provisions of 5.2 of FZ65003-1995. 6 Inspection Report
The inspection report shall include the following contents:
a) Name of the core manufacturer;
b) Model, specification and production date of the core;c) Inspection date;
d) Temperature of the inspection room;
e) Relative humidity of the inspection room;
f) Inspection results;
g) Inspection conclusion;
h) Inspector.
7 Inspection Rules
7.1 Factory Inspection
7.1.1 The quality inspection department of the manufacturer shall be responsible for the inspection of products, with each 1000m as a batch (less than 1000m is regarded as a batch). Products can only be shipped after passing the inspection and issuing the certificate of conformity. 7.1.2 See Table 7 for the factory inspection items.
7.2 Type inspection
7.2.1 Type inspection shall be conducted in any of the following cases: a) Trial design and evaluation of new products and old products when they are transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During formal production, inspection shall be conducted every two years after regular production or accumulation of a certain output; d) When the product is resumed after being discontinued for two years; e) When there is a significant difference between the factory inspection result and the last type inspection result; f) Trial design and evaluation of new products and old products when they are transferred to the factory for production. 7.2.2 Type inspection items are shown in Table 7.
Technical requirements
Appearance quality
Core material
Number of core layers
Cotton content of core
Width of core
Length of core
Force line density of core
Force line tensile strength of core
Force line elongation at break of core
MT 317--2002
Factory inspection
Note·“√\” indicates inspection; “\” indicates no inspection 7.3 Judgment rules
Type inspection
General items
Important items
Important items
Important items
General items
General items
Important items
Important items
Important items, if one item is unqualified, double samples should be taken for re-inspection of the unqualified items. If it is still unqualified, the product is judged to be unqualified. For general items, if two items are unqualified, double samples can be taken for re-inspection. If it is still unqualified, the product is judged to be unqualified. 7.4 Requirements for random inspection
See Appendix A for the requirements for random inspection.
8 Marking, packaging, storage and transportation
8.1 Marking
The ends of the belt core and the outer packaging cloth should be clearly marked. The marking examples are as follows: M
Product inspection certificate number
Manufacture year
Manufacturer name
Indicates that the radial nominal tensile strength of the belt core is 800N/mm, indicating the integral belt core of the conveyor belt for coal mines
8.2 Packaging
Each belt core should be wound with a wooden core, wrapped with black plastic cloth inside, and tied with sacks or packaging cloth outside. 8.3 Storage and transportation
During storage and transportation, the belt core should be kept clean, avoid direct sunlight and moisture, prevent contact with acids, alkalis, oils, plasticizers, solvents and other substances that affect the quality of the belt core, and be at least 1m away from heat sources. The warehouse for storing the core should be well ventilated, the room temperature should not exceed 40C, and the relative humidity should not be greater than 70%RH.
MT317—2002
Appendix A
Appendix of Tips)
Requirements for Sampling Inspection
A1 After the new product is inspected and qualified by the quality inspection unit authorized by the state, it will be issued a "Type Inspection Permit" with a validity period of half a year. After passing the industrial test, the quality inspection unit authorized by the state will conduct random inspections, and after passing the inspection, it will be issued a "Test Certificate", which is valid for 2 years. The sampling base is 500m, and the number of samples is 1m. A2 After the expiration of the validity period of the "Test Certificate", the quality inspection unit authorized by the state will conduct random inspections, and a new certificate will be issued after passing the inspection. A3 In view of the problems existing in product quality, the quality inspection unit, authorized by the superior competent department, has the right to conduct sampling re-inspection on the products that have been issued with "inspection certificates". When problems are found in product quality, rectification suggestions should be put forward and the original "inspection certificates" should be revoked. 6
MT 317 -2002
ISBN 7-5020-1997-9
Coal
Industry Standard of the People's Republic of China
Integral Belt Core for Coal Mine Conveyor Belt
MT317—2002
Coal Industry Press
(No. 35, Shuyaoju, Chaoyang District, Beijing 100029)Beijing Fangshan Hongzuo Printing Factory
Xinhua Bookstore Beijing Distribution Office
Format 880×1230 mm1/16
Printing sheet5/8
Word count11,000 words
1st edition, August 2002
Print run1-435
1st printing, August 2002
ISBN7-5020-2193-0/F652.2
All rights reserved. Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or pages falling off, our company will be responsible for replacing them1 Type inspection should be carried out in any of the following situations: a) Trial design and identification of new products and old products when they are transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During formal production, inspection should be carried out every two years after regular production or accumulation of a certain amount of production; d) When the product is resumed after being discontinued for two years; e) When there is a significant difference between the factory inspection result and the last type inspection result; f) Trial design and identification of new products and old products when they are transferred to the factory for production. 7.2.2 Type inspection items are shown in Table 7.
Technical requirements
Appearance quality
Core material
Number of core layers
Cotton content of core
Width of core
Length of core
Force line density of core
Force line tensile strength of core
Force line elongation at break of core
MT 317--2002
Factory inspection
Note·“√\” indicates inspection; “\” indicates no inspection 7.3 Judgment rules
Type inspection
General items
Important items
Important items
Important items
General items
General items
Important items
Important items
Important items, if one item is unqualified, double samples should be taken for re-inspection of the unqualified items. If it is still unqualified, the product is judged to be unqualified. For general items, if two items are unqualified, double samples can be taken for re-inspection. If it is still unqualified, the product is judged to be unqualified. 7.4 Requirements for random inspection
See Appendix A for the requirements for random inspection.
8 Marking, packaging, storage and transportation
8.1 Marking
The ends of the belt core and the outer packaging cloth should be clearly marked. The marking examples are as follows: M
Product inspection certificate number
Manufacture year
Manufacturer name
Indicates that the radial nominal tensile strength of the belt core is 800N/mm, indicating the integral belt core of the conveyor belt for coal mines
8.2 Packaging
Each belt core should be wound with a wooden core, wrapped with black plastic cloth inside, and tied with sacks or packaging cloth outside. 8.3 Storage and transportation
During storage and transportation, the belt core should be kept clean, avoid direct sunlight and moisture, prevent contact with acids, alkalis, oils, plasticizers, solvents and other substances that affect the quality of the belt core, and be at least 1m away from heat sources. The warehouse for storing the core should be well ventilated, the room temperature should not exceed 40C, and the relative humidity should not be greater than 70%RH.
MT317—2002
Appendix A
Appendix of Tips)
Requirements for Sampling Inspection
A1 After the new product is inspected and qualified by the quality inspection unit authorized by the state, it will be issued a "Type Inspection Permit" with a validity period of half a year. After passing the industrial test, the quality inspection unit authorized by the state will conduct random inspections, and after passing the inspection, it will be issued a "Test Certificate", which is valid for 2 years. The sampling base is 500m, and the number of samples is 1m. A2 After the expiration of the validity period of the "Test Certificate", the quality inspection unit authorized by the state will conduct random inspections, and a new certificate will be issued after passing the inspection. A3 In view of the problems existing in product quality, the quality inspection unit, authorized by the superior competent department, has the right to conduct sampling re-inspection on the products that have been issued with "inspection certificates". When problems are found in product quality, rectification suggestions should be put forward and the original "inspection certificates" should be revoked. 6
MT 317 -2002
ISBN 7-5020-1997-9
Coal
Industry Standard of the People's Republic of China
Integral Belt Core for Coal Mine Conveyor Belt
MT317—2002
Coal Industry Press
(No. 35, Shuyaoju, Chaoyang District, Beijing 100029)Beijing Fangshan Hongzuo Printing Factory
Xinhua Bookstore Beijing Distribution Office
Format 880×1230 mm1/16
Printing sheet5/8
Word count11,000 words
1st edition, August 2002
Print run1-435
1st printing, August 2002
ISBN7-5020-2193-0/F652.2
All rights reserved. Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or pages falling off, our company will be responsible for replacing them1 Type inspection should be carried out in any of the following situations: a) Trial design and identification of new products and old products when they are transferred to the factory for production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) During formal production, inspection should be carried out every two years after regular production or accumulation of a certain amount of production; d) When the product is resumed after being discontinued for two years; e) When there is a significant difference between the factory inspection result and the last type inspection result; f) Trial design and identification of new products and old products when they are transferred to the factory for production. 7.2.2 Type inspection items are shown in Table 7.
Technical requirements
Appearance quality
Core material
Number of core layers
Cotton content of core
Width of core
Length of core
Force line density of core
Force line tensile strength of core
Force line elongation at break of core
MT 317--2002
Factory inspection
Note·“√\” indicates inspection; “\” indicates no inspection 7.3 Judgment rules
Type inspection
General items
Important items
Important items
Important items
General items
General items
Important items
Important items
Important items, if one item is unqualified, double samples should be taken for re-inspection of the unqualified items. If it is still unqualified, the product is judged to be unqualified. For general items, if two items are unqualified, double samples can be taken for re-inspection. If it is still unqualified, the product is judged to be unqualified. 7.4 Requirements for random inspection
See Appendix A for the requirements for random inspection.
8 Marking, packaging, storage and transportation
8.1 Marking
The ends of the belt core and the outer packaging cloth should be clearly marked. The marking examples are as follows: M
Product inspection certificate number
Manufacture year
Manufacturer name
Indicates that the radial nominal tensile strength of the belt core is 800N/mm, indicating the integral belt core of the conveyor belt for coal mines
8.2 Packaging
Each belt core should be wound with a wooden core, wrapped with black plastic cloth inside, and tied with sacks or packaging cloth outside. 8.3 Storage and transportation
During storage and transportation, the belt core should be kept clean, avoid direct sunlight and moisture, prevent contact with acids, alkalis, oils, plasticizers, solvents and other substances that affect the quality of the belt core, and be at least 1m away from heat sources. The warehouse for storing the core should be well ventilated, the room temperature should not exceed 40C, and the relative humidity should not be greater than 70%RH.
MT317—2002
Appendix A
Appendix of Tips)
Requirements for Sampling Inspection
A1 After the new product is inspected and qualified by the quality inspection unit authorized by the state, it will be issued a "Type Inspection Permit" with a validity period of half a year. After passing the industrial test, the quality inspection unit authorized by the state will conduct random inspections, and after passing the inspection, it will be issued a "Test Certificate", which is valid for 2 years. The sampling base is 500m, and the number of samples is 1m. A2 After the expiration of the validity period of the "Test Certificate", the quality inspection unit authorized by the state will conduct random inspections, and a new certificate will be issued after passing the inspection. A3 In view of the problems existing in product quality, the quality inspection unit, authorized by the superior competent department, has the right to conduct sampling re-inspection on the products that have been issued with "inspection certificates". When problems are found in product quality, rectification suggestions should be put forward and the original "inspection certificates" should be revoked. 6
MT 317 -2002
ISBN 7-5020-1997-9
Coal
Industry Standard of the People's Republic of China
Integral Belt Core for Coal Mine Conveyor Belt
MT317—2002
Coal Industry Press
(No. 35, Shuyaoju, Chaoyang District, Beijing 100029)Beijing Fangshan Hongzuo Printing Factory
Xinhua Bookstore Beijing Distribution Office
Format 880×1230 mm1/16
Printing sheet5/8
Word count11,000 words
1st edition, August 2002
Print run1-435
1st printing, August 2002
ISBN7-5020-2193-0/F652.2
All rights reserved. Violators will be prosecuted
If there are any quality problems such as missing pages, reversed pages, or pages falling off, our company will be responsible for replacing them
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