Some standard content:
Chemical Industry Standard of the People's Republic of China
Rubber pneumatic tire for clutch
1·Subject content and scope of application
HG2293--92
This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of rubber pneumatic tires for clutch. This standard is applicable to rubber pneumatic tires for clutch of engineering machinery such as oil drilling rigs, mining machinery, and automobiles. 2 Reference standards
Determination of tensile properties of vulcanized rubber
Test method for rubber Shore A hardness
Determination of adhesion strength between vulcanized rubber and fabrics. Sampling procedure and sampling table for batch inspection by counting (applicable to inspection of continuous batches)GB2828
GB/T2941
Standard temperature, humidity and time for environmental conditioning and testing of rubber specimensGB3512
GB3672
GB5721
GB5722
GB6031
GB6032
GB77 59
3 Classification
Test method for hot air aging of rubber
Dimensional tolerance of solid molded and extruded rubber productsGeneral provisions for marking, packaging and transportation of rubber sealing productsGeneral provisions for storage of rubber sealing products
Determination of international hardness of vulcanized rubber (30~85IRHD), conventional test methodDetermination of international hardness of vulcanized rubber (3085IRHD)Micro test method
Determination of permanent deformation of vulcanized rubber under constant deformation compression at room temperature and high temperature3.1 Rubber pneumatic tires for clutches are divided into two types according to their structure: ordinary type (type 1) and ventilated type (type 2). The structure of 3.1.11 type rubber pneumatic tire is shown in Figure 1, and its dimensional tolerance is listed in Table 1. The clutch specifications in Table 1 are nominal diameter of clutch friction wheel × nominal width of clutch friction wheel. Approved by the Ministry of Chemical Industry of the People's Republic of China on June 1, 1992. Implementation on October 1, 1993. HG2293--Figure 11 Schematic diagram of rubber pneumatic tire. 1-Metal air nozzle: 2-Outer rubber layer: 3--Cord layer; 4 Metal connecting piece; 5 Inner rubber layer: 6 Pin hole: 7-Canvas layer. Standard exchange network. Free download of passenger standard industry information. HG2293--H ... 0干99
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HG2293-92
3.1.22 type rubber pneumatic tire structure as shown in Figure 2, its size tolerance is listed in Table 2, Table 2 clutch specifications Nominal diameter of clutch friction wheel Nominal width of clutch friction wheel
Figure 22 Schematic diagram of rubber pneumatic tire
1-Metal air nozzle: 2-Outer rubber layer: 3-Cord layer: 4-Inner rubber layer: Table 22 Dimensions and tolerances of rubber pneumatic tire
Friction wheel outer edge size
Clutch specifications
318×100
406X130
450×130
580X150
5430200
500X 260 | | tt | | 610160 | ||670±3Www.bzxZ.net
Section width
100±t
130±1
132±1
150±!
mBusiness standard industry qualification free hall
Number of air nozzles and thread specifications
Number of air nozzles
Thread specifications
20-14NPT
Clutch specifications
1070X200
1168X305
1170×250
LT700/1350Y
Diaphragm type
1114±3
1310±3
1303±3
810±1
HG2293--92
Continued Table 2 ..
Friction wheel outer edge size
1270±3
1380±3
1367±3
870±1
Section width
230±1
315±1
264±1
Number of air nozzles and thread specifications
Number of air nozzles
Thread specifications
20-14NPT
3.2 The products are marked with “product name, model, friction wheel nominal diameter, friction wheel nominal width, manufacturing unit, standard number” using Chinese phonetic letters and numbers.
Example:
4 Technical requirements
500×125
HG2293—92
Standard number
Manufacturer code
Nominal width of clutch friction wheel
Nominal diameter of clutch friction wheel
Pneumatic tire type
Rubber pneumatic tire for clutch
The physical properties of rubber pneumatic tire materials shall comply with the provisions of Table 3 Table 3 Physical properties of rubber pneumatic tire
Outer rubber layer
Inner rubber layer
Cord layer
Hardness (Shore A or IRHD), degree
Tensile strength, MPa| |tt||Elongation at break, %
Compression set (100℃×22h) %
Hot air aging
(100CX24h)
Change in tensile strength, %
Change in elongation at break, %Reduction
Hardness (Shore A or IRHD), degrees
Tensile strength, MPa
Elongation at break, %
Adhesion strength between rubber and cord, kN/m
Adhesion strength between cord layers, kN/mNote: If more than 50% (including 50%) of synthetic rubber is used, the tensile strength shall not be less than 90% of the standard. ec
Standard liquid replacement network aboeo
HG2293--92
4.2 The raw materials and manufacturing process of rubber pneumatic tires shall comply with the requirements of relevant technical specifications. 4.3 The appearance of the product shall be neat and tidy, and the burrs shall be removed. The appearance of the product shall meet the design requirements, and the appearance quality of the product shall meet the requirements specified in Table 4 and Table 5.
Table 41 Appearance Quality of Rubber Pneumatic Tire
Defect Name
Exposed fabric on sidewall
Crack in pin hole
Voice nozzle screw disengagement
Connecting plate screw disengagement
Crack on edge of connecting plate
Voice nozzle skewed
Voice end depression
Bent pin hole
Bright scar and heavy skin
Defect Name
Overflow glue thickness at mold seam
Exposed fabric on tire measurement
Bright scar and heavy skin
Voice nozzle skewed
Slight exposed fabric is allowed, but the total length shall not exceed 1/4 of the circumference. The length of the crack shall not exceed 7mm, The depth shall not exceed 10% of the total length. It is not allowed.
No more than two pieces, but not continuous.
It is allowed. The curtain cloth shall not be exposed. The total length shall not exceed 1/3 of the connecting piece. For nominal diameters below 600mm, no more than 2 pieces; for those above 700mm, no more than 5 pieces. The vertical height difference on both sides shall not be greater than 3mm.
For nominal diameters below 300mm, no less than 14mm shall be exposed; for nominal diameters of 500.600mm, no less than 16mm shall be exposed; for those above 700mm, no less than 18mm shall be exposed. It is not allowed.
The depth shall not exceed 20% of the outer layer of glue. The length and width of each place shall not exceed 12 and 10mm respectively. For nominal diameters below 500mm, there should be no more than 2 locations; for those above 500mm, there should be no more than 4 locations. Appearance quality of type 52 rubber pneumatic tires
iratn or less
A slight curtain pattern is allowed, but the total length does not exceed 1/4 of the circumference. It is not allowed to be
The depth does not exceed 20% of the outer rubber thickness. The length and width of each location are not greater than 12 and 0mm respectively. For those below 500mm, there should be no more than 2 locations; for those above 500mm, there should be no more than 4 locations. The vertical height difference between the two sides is not greater than 3mm
The working pressure of the pneumatic tire is 0.75MPa.
5 Test methods
5.1 Physical properties of products
Nominal diameter is 500mm
5.1.1 The sample is taken from the product. If it cannot be directly made from the product, the standard sample can be made from the same batch of rubber materials used to manufacture the product, using the same vulcanization conditions as the product. And explain it in the test report. 5.1.2 Sample adjustment, according to GB/T2941 5.1.3 Hardness test, according to GB6031, GB6032 (arbitration method) or GB53I. 5.1.4 Tensile strength, elongation at break test-according to GB528. 5.1.5 Compression permanent deformation test, according to GB7759, using B-type sample. 5.1.6 Aging test, according to GB3512. 5.2 Product size
Measured with a measuring tool with an accuracy of 0.5mm or 1mm. Standard Technet am.ba6080.scn Free download of American standard industry data HG2293-92
5.3 Appearance quality
Inspect by visual inspection or measuring tools with an accuracy of 0.02mm. 5.4 Pneumatic tire pressure test
Perform in accordance with the provisions of Appendix A.
6 Inspection rules
6.1 Finished products shall be batched in a number not exceeding 1000 pieces or the corresponding amount of rubber. 6. The dimensions of the products shall be sampled in accordance with the provisions of Table 1 and Table 2 of this standard, and the number of samples sampled shall not be less than 30% of the production volume. 6.3 From each batch of products, one piece or the corresponding amount of rubber shall be randomly sampled for physical property test, and the items specified in Table 3 of this standard shall be tested item by item. If any item fails in the test, double the sample shall be taken for retest of the item. If one item still fails after the retest, the batch of products shall be considered as unqualified.
6.4 From each batch of products, one piece shall be randomly sampled for pressure test. If it is unqualified, take another one for re-inspection. If it is still unqualified, the batch of products is unqualified.
6.5 Each product should be inspected for appearance quality. 7 Marking, packaging, transportation and purchase and storage
7.1 Product marking, packaging and transportation refer to the provisions of GB5721. The air nozzle should be coated with anti-rust oil. 7.2 The storage of products shall comply with the provisions of GB5722.
7.3 Products are strictly prohibited from standing upright during storage and transportation, but they can be stacked. For products with a height of 160mm, 10 can be stacked; for products with a height of more than 160mm, 5 can be stacked.
7.4 Under the conditions of complying with the above provisions, the physical properties of the product shall comply with the provisions of this standard within 1 year from the date of manufacture. Standard exchange network www.bebeu, cm various standard industry information free lower part HG2293--92
Appendix A
Pressure test method for rubber pneumatic tire for clutch (supplement)
This method is to fill the rubber pneumatic tire with a specified pressure, and after a certain period of time, the pressure bearing capacity of the rubber pneumatic tire is determined by the sealing and appearance changes of the pneumatic tire.
A1 Test device
Use a Y2-150 hydraulic blasting machine with a maximum pressure of 50MPa; 1 inner and outer clamping rings of the pneumatic tire; 4 fixing screws; 1 water inlet nozzle.
A2 Test conditions
The test should be at room temperature: the test medium is tap water: the test water pressure is 1.5±0.IMPa. A3 Test procedure
Fix the pneumatic tire sample with the inner and outer rings. Put it straight, insert the water inlet nozzle into the air bubble of the sample, seal it well, and do not allow water leakage. Connect the blasting machine with a rubber hose, then turn on the power supply, open the water source to pressurize the blasting machine and let water flow in (see Figure A1), and conduct the test according to the specified requirements. Figure A1 Schematic diagram of pneumatic tire pressure test
1 Fixed screw: 2-pneumatic tire sample: 3-connecting water nozzle: 10-pneumatic tire inner clamping ring, 5-pneumatic tire outer holding force A4 Test result evaluation
A4.1 When the water pressure rises to 1.5±0.IMPa, maintain the pressure for 10mil. During the pressure maintenance period, the pressure drops within 0.05MPa, and the pneumatic tire shape expands uniformly, which is a qualified product. When water seeps out during the rising process from the bottom of the water, or the pneumatic tire expands unevenly, it is an unqualified product. A5 Test report
The pneumatic tire medical test report should include the following: a.
Test name or code:
Test standard:
Specimen specifications and numbers:
Test conditions, temperature, service time!
Test situation:
Standard approval mm
Test results
g. Test date:
..Tester and reviewer
Additional remarks:
HG2293--92
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Northwest Rubber Industrial Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by Beijing Rubber Factory No. 4. The main drafters of this standard are Sun Wenhui, Su Guirong and Wang Minqian. Standard exchange network bx080-n
Test name or code:
Test standard:
Specimen specifications and numbers:
Test conditions:
Standard approval mm
Test results
g. Test date:
..Tester and reviewer
Additional remarks:
HG2293--92
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Northwest Rubber Industrial Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by Beijing Rubber Factory No. 4. The main drafters of this standard are Sun Wenhui, Su Guirong and Wang Minqian. Standard exchange network bx080-n
Test name or code:
Test standard:
Specimen specifications and numbers:
Test conditions:
Standard approval mm
Test results
g. Test date:
..Tester and reviewer
Additional remarks:
HG2293--92
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the Northwest Rubber Industrial Products Research Institute of the Ministry of Chemical Industry. This standard was drafted by Beijing Rubber Factory No. 4. The main drafters of this standard are Sun Wenhui, Su Guirong and Wang Minqian. Standard exchange network bx080-n
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