GB 7036.1-1997 Pneumatic tire inner tubes Part 1: Automobile tire inner tubes
Some standard content:
GB7036.1---1997
Foreword
When revising this standard, taking into account the particularity of motorcycle tire inner tubes, the motorcycle tire inner tubes and automobile tire inner tubes in the previous version of the standard were separated. It consists of two parts: Part 1 is automobile tire inner tubes, and Part 2 is motorcycle tire inner tubes. Part 1 of this standard is equivalent to the Japanese industrial product standard JISD4231---1987 "Inner tubes for automobile tires", which is sufficient. It is possible to make our standards consistent with international standards, which is conducive to the development of market economy, international trade, technological exchanges and economic exchanges. Part 1 of this standard lists the main dimensions and basic parameters of the previous version of the standard in the appendix of the standard prompt for manufacturers to refer to in design.
Part 1 of this standard does not include aviation tire inner tubes, and brittle strength is eliminated from the physical and mechanical properties. When Part 1 of this standard was revised, the decrease rate of tensile strength of natural rubber inner tubes after aging was added to the physical and mechanical properties. The main indicators of the revised physical and mechanical properties of Part 1 of this standard are the same as the basic machine of Japanese Industrial Standard JISD4231-1987. Appendix A of Part 1 of this standard is a reminder appendix. Part 1 of this standard will also replace the automotive tire inner tube part of (GB7036---89) from the date of entry into force. This standard was proposed by the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Tire and Rim Standardization Technical Committee. This standard was drafted Unit: Shanghai Tire & Rubber (Group) Co., Ltd. Great China Rubber Factory, Hubei Dongfeng Golden Lion Tire Co., Ltd. Chemical Industry Department Beijing Rubber Industry Design Institute
The main drafters of this standard: Gu Tangdi, Yuan Fanglin, Liu Shifang, Wang Kexian, Shan Jibao, and Wang Jinlan. This standard was first published in November 1986 and revised for the first time in March 1989. The National Tire and Rim Standardization Technical Committee is responsible for interpretation. 154
1 Scope
National Standard of the People's Republic of China
Pneumatic tire inner tube
Part 1: Automobile tire inner tube
Inner tube of pneumatic tyresPart: Inner tube of automobile tire This standard regulates GB 7036.1--1997
replaces GB 7036-89
Part 1 of this standard applies to cars, trucks, engineering machinery, etc. Inner tubes of pneumatic tires for industrial vehicles, tractors and agricultural machinery.
Part " of the substandard does not apply to aircraft tire inner tubes and motorcycle tire inner tubes. 2 Reference Standards
The provisions contained in the following standards, By reference in this standard, the versions indicated are valid at the time of publication. Parties using this standard should explore the possibility of using the latest version of the standard listed below. 9744---1997
Truck tires
G13/T 519-.93
(13/T 528--92
(GB/T 1190-- 91
G3 9743 - 1997
G3/T 1192 --91
(G13 1796 -- 1996
(G3/T 2981--91||tt| |3 Types of Rubber
Test Methods for Physical and Mechanical Properties of Pneumatic Tires, Determination of Tensile Properties of Vulcanized Rubber and Thermoplastic Rubber, Engineering Machinery Tires
Car Tires
Agricultural Tires
Tire Valve
Industrial vehicle tires
are divided into two categories according to the materials used in the manufacture of inner tubes: natural rubber or a combination of natural rubber is Category A, and butyl rubber or a combination of butyl rubber is Category B | |tt||4 requirements
4.1 Thickness
4.1.1 Minimum allowable thickness
65%. 4.1.2 Thickness Uniformity
Except for joints, the thickness at any point in the same part shall not exceed ±17.5% of the average of the measurement results at one point in the same part, using the method specified in Article 6.1 of this standard. (That is, the average of 4 points in the center of the crown, the average of 4 points in the center of the base, the average of 4 points in the center of the left side, and the average of 1 point in the center of the side).
State Bureau of Technical Supervision approved on 1997-09-10 and implemented on 1998-02-01
155
4.2 specifications and sizes
GB 7036.1—1997
Inner tube The dimensions should comply with the corresponding tire matching requirements specified in GB9744, GB/T1190, GB9743, GB/T1192, and GB/T2981. Please refer to Appendix A. The specification mark of the inner tube is consistent with the specification mark of the matching outer tire. 4.3 Valve
The valve should be equipped according to the models specified in GB9744, GB/T1190, GB9743, GB/T1192, and GB/T2981. See Appendix A for details. If the user needs to equip a valve model other than the above regulations, the manufacturer and the user shall negotiate and resolve the problem. The performance, size and requirements of the valve should comply with the regulations of GB1796.
4.4 Performance
The inner tube is tested using the test method specified in Chapter 6 of this standard. Its performance must comply with the provisions of Table 1. Table 1 Physical properties and indicators
Trial
Tensile strength.MPa
Tensile strength decrease rate after aging, %
Elongation at break, %|| tt||Hot tensile deformation, %
Joint strength, MPa
Examination
Adhesion strength between rubber cushion valve and tire body, kN/m items
Yes Adhesion strength between the base valve and the rubber pad, kN/m Adhesion strength between the base valve and the rubber pad, N
4.5 Appearance quality
The appearance of the inner tube should not have any impact on the quality of use defects and good air tightness. Class A
14.7
10
500
25
8.3
Indicator requirements
Class B||tt| |8.4
450
35
3. 4
3.5
3.5
80
If there are scars or cracks Doors, bubbles, sponginess, impurities and other appearance defects that may affect use are all unqualified products. 5 Inspection Rules
5.1 Sampling
If the weekly output of inner tubes of each specification exceeds 10,000, the output will be regarded as one batch every two weeks; if the weekly output does not exceed 10,000, the output will be regarded as one batch of 20,000 Articles are considered as one batch; if the output within six months from the date of production is less than 20,000 pieces, the period within six months from the date of production shall be regarded as one batch. Each batch of inner tube extraction strips shall be inspected for the minimum allowable thickness, thickness uniformity, and physical and mechanical performance indicators of the inner tube according to the requirements specified in this standard.
5.2 Inspection
The finished inner tube shall be sampled by the technical inspection department of the manufacturer in accordance with the provisions of Article 5.1. All inner tubes delivered from the factory must be inspected for appearance quality one by one. The minimum allowable thickness, thickness uniformity, physical and mechanical performance indicators, and appearance quality of all inner tubes delivered from the factory should be consistent with the provisions of this standard. || tt | For a sample with a width of 25mm, measure the thickness of the crown center, base center, left center, and right center respectively. The arithmetic mean of the above 16-point measurements is the single layer thickness.
156
Longitudinal tensile property sampling
GB 7036. 1-
Valve
4!
Figure 1||tt ||1997
Joints
Joint Sampling
6.2 Tensile strength, elongation at break, and tensile strength decrease rate after aging are based on Type 1 sub-rings specified in GB/T519. Take samples longitudinally with the cutting knife (see Figure 1), and conduct the test according to the method specified in GB/T528. The tensile test specimen after aging and the tensile test specimen before aging should be cut from the same location.
Aging test conditions:
Aging temperature: 90±1℃
Aging time: 24h
or
70±1℃
The tensile strength of 96h
aging test is calculated according to formula (1): A.
X. X,
X100
X.
In the formula: A----relative to the tensile strength reduction rate before aging, %; X.-Tensile strength value before aging, MPa
X-Tensile strength value after aging, MPa.
6.3 Hot tensile deformation
Use the type 1 sub-bell-shaped cutter specified in GB/T528, and take a sample from both sides of the inner tube, longitudinally. Test conditions;
Aging temperature: 105±2℃
Aging time: 5h
(1)
Mark the sample with a marking line and stretch it to the marking line The spacing is 1.5 times, and placed in an aging box. After aging at 105 ± 2C, store it under the chamber for 2 hours. Then remove the tension, park it for not less than 8 hours, and measure according to the method specified in GB/T528. Take the arithmetic mean of the two test pieces. || tt | The gas line can be ground away, and the thickness greater than 3mm can be ground to 3mm). The test is carried out according to the method specified in GB/T528. The thickness of the sample is the average of the thickness of the two points on the left and right near the joint. It is used as the thickness of the sample to calculate the joint strength. . Each point shall comply with the joint strength value specified in Table 1 of Article 4.4.
6.5 The bonding strength between the valve and the rubber pad, the bonding strength between the rubber pad valve and the tire body rubber 6.5.1 The adhesive strength between the valve and the rubber pad with a base is tested according to the method specified in GB/T519 . 6.5.2 Adhesion between baseless straight stem valve and rubber pad: 157
GB 7036.1
1997
Keep a 15mm wide rubber strip in the center of the stem valve pad , remove the remaining part (see Figure 2), and then cut the bottom of the rubber pad and the straight rod cover along the wide sides of the rubber strip to the surface of the metal mouth, and divide it into two symmetrical parts (see Figure 3). Place the sample across the clamp (see Figure 4), and then place the clamp on the top of the tensile testing machine (or use a wire rope instead). Clamp the rubber strip at the other end of the specimen to the lower holder. The descending traction speed of the peel test is 50±10mm/min. The two samples are subjected to peeling tests respectively. During the peeling process, the peeling state is required to be maintained at a 90° angle. The peeling is positive until the glue is separated from the metal nozzle.
During the test, if the valve cover is torn off, the bonding strength is calculated based on the load when the glue is torn off. The bonding strength value is expressed as the arithmetic mean of the test results of two specimens. 6.5.3 The bonding strength between the rubber cushion valve and the tire body shall be tested according to the method specified in GB/T519. Clamping part
15
Removed part
Clamping part
Picture 2
Picture 3
158
Cutting Line
Photo protection strip
Remove part
7 Product logo and packaging
7.1 Labeling
GB 7036.1--1997
Upper connecting fixture
Sample
Fixed sample lock pin
45
Figure 4
Each inner tube should have the following markings: ||tt| |a) Specifications;
h) Trademark and factory name or place name:
) Inspection mark.
Except for natural rubber inner tubes, they must be marked with a color line not less than 2mm wide. "The base rubber inner tube should have a blue line on its circumference. "The base rubber ring is made of angularized butyl rubber inner tube, and there should be a green line on its circumference. "The base rubber is combined with EPDM rubber inner tube, and there should be a red marking line on its circumference. 7.2 Packaging
a) The packaging of various inner tubes matched with outer tires shall comply with the regulations of GB9744, GB/T1190, GB9743, GB/T1192 and (i13/T2981) respectively.
b) Not outer tires The packaging of matching inner tubes can be negotiated between the supply and demand parties. 159
GB 7036.1-
1997
Appendix A
(prompted appendix)
Inner tube specifications, main dimensions, basic parameters car tires, trucks The inner tube specifications, main dimensions and basic parameters of bus tires, light truck and small and medium bus tires, industrial vehicle tires, engineering machinery tires, tractor driving wheel tires, tractor guide wheel tires, and agricultural machinery tires are listed in Table A1 ~ Table A8 in.
Table A1 Car Tire Inner Tube
Inner Tube Specifications
5.20--13
5.50---13
5.60—13
6.00 --13
5.90—13
5.95-- 13
6.15—13
6.40---13
6.45---13|| tt||6.50--13
6.70--·13
6.95---13
7.00-13
7.25—13
5.00- -14
5. 20--- 14
5.60—14
5. 90--14
6.00--1.1
6.45-- 14
6.40.14
6.50--14
6. 95---14
7.00—14
7.50---14|| tt | 150
174
184
147
174
189
207
The outer circumference of the flat stack is not less than || tt||1600
1669
1740
1652
1749
1827
1890
The weight is not less than || tt||610
725
790
610
745
895
1050
Basic parameters||tt ||Valve model
Z1-02-1
Z1-02-2
Inner tube specifications
5.00
5.20
5.60
15
15
15
5.50-
·15
5.90·15
6.00--15| |tt||6.40.--15
6.50--15
6.85-
-15
6.70-15
8.15---15
8. 85 --15
9.00--15
9.15--15
GB7036.1—1997
Table A1 (End)| |tt||Main dimensions.mm
The flat-stacked section width is not less than
152
187
195
214
Flat-stacked The outer circumference is not less than
1815
1872
1896
1997
The weight is not less than
700
815|| tt||895
1110
Basic parameters
Valve model
Z1-02-1
21-02-2||tt| |21-02-1
Z2-02-2
Note: Class B rubber can be based on 90% of the weight in tables A1 to A8 as the lower limit; the weight in the table does not include valves, The weight of the rubber pad. Table A2 Truck and bus tire inner tube specifications
7.00---20
7.50—20
8.25—20
9.00--·20||tt ||10.00—20
11,00—20
12.00—20
13.00--20
14.00—20
12.00---24
下载下载，mm
平右天要设计不设计
179
203
229
249| |tt||269
290
309
339
360
309
平登外周长不英语||tt| |2337
2416
2517
2608
2668
2759
2909
3019
3109
3209
weight·不英语
1750
2210
2590
3150
3700
4500
21-01-6
21-01-7
[ 21-01-8
161
内胎自行
5.00 )10)
1.50
12
5.0012
5.5013
6.00) ·13
6.5013
7.0013|| tt||5.5014
6.0014
6.5011
7.0014
6.00·15
6.50-15
7.00--15||tt ||7.50- 15||h||6.00--16||h||6.50-·16||h||7.00—16||h||7.50---16||h||8.25 -16| |tt||9. 00---16
内胎自行
-1. 00--8
5. 00--8
6.00
8
6.00-
-9
7.009
6.50
7.50|| tt||7.00
i?
10
10
12
GB7036.1-- 1997
表A3轻型载重汽车、中小客车相内胎下载下载.mm
tt||平右要质进口不这些
135
119
150
174
184
147
170
174
189
187
189
200
179|| tt||189
200
220
240
249
平右外周长不英语
1410
1470
1600
1669
1740
1652
1700
1749
1827
1872| |tt||1890
1970
1959
2008
2049
2120
2211
2329||tt ||表A4
工业电视车车内胎
下载下载，mm
平右要要进行不进行
100
148
169. tt||1410
1500
1569
1623
1780
weight，不英语
600
560| |tt||610
805
870
690
800
825
915
895||tt ||1480
1620
1130
1310
1450
1660
2100
2500
Basic parameters
21-021
21-02-2
Z1-01-3
Z1-02-2
Z1-02-1
Z1-01-3
Z1-01-3
21-01-4
basic parameter
weight·g不英语||tt ||315
555
800
940
980
1110
1105
汽门嘴美国|| tt||21-02-1
Z1-01-1
mm
The flat stacked section width is not less than
135
119
150
174
184
147|| tt||170
174
189
187
189
200
179
189||tt| |200
220
240
249
The outer circumference of the flat stack is not less than
1410
1470
1600| |tt||1669
1740
1652
1700
1749
1827
1872
1890||tt ||1970
1959
2008
2049
2120bzxZ.net
2211
2329
Table A4||tt| |Industrial vehicle tire inner tubes
Main dimensions, mm
The flat stack section width is not less than
100
148
169
180| |tt||200
203
185
The outer circumference of the flat stack is not less than
1015
1023
1410||tt| |1500
1569
1623
1780
weight, not less than
600
560
610||tt ||805
870
690
800
825
915
895
1480
1620
1130
1310
1450
1660
2100
2500
Basic parameters
21 -021
21-02-2
Z1-01-3
Z1-02-2
Z1-02-1
Z1-01 -3
Z1-01-3
21-01-4
Basic parameters
Weight·g is not less than
315
555
800
940
980
1110
1105
Valve model
21-02-1
Z1-01-1
mm
The flat stacked section width is not less than
135
119
150
174
184
147|| tt||170
174
189
187
189
200
179
189||tt| |200
220
240
249
The outer circumference of the flat stack is not less than
1410
1470
1600| |tt||1669
1740
1652
1700
1749
1827
1872
1890||tt ||1970
1959
2008
2049
2120
2211
2329
Table A4||tt| |Industrial vehicle tire inner tubes
Main dimensions, mm
The flat stack section width is not less than
100
148
169
180| |tt||200
203
185
The outer circumference of the flat stack is not less than
1015
1023
1410||tt| |1500
1569
1623
1780
weight, not less than
600
560
610||tt ||805
870
690
800
825
915
895
1480
1620
1130
1310
1450
1660
2100
2500
Basic parameters
21 -021
21-02-2
Z1-01-3
Z1-02-2
Z1-02-1
Z1-01 -3
Z1-01-3
21-01-4
Basic parameters
Weight·g is not less than
315
555
800
940
980
1110
1105
Valve model
21-02-1
Z1-01-1
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