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GB 12732-2008: [GB/T 12732-2008] Automotive V-belts
Status: Valid GB 12732: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 12732-2008 | English | 189 |
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[GB/T 12732-2008] Automotive V-belts
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GB 12732-2008
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| GB 12732-1996 | English | 279 |
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Automotive V-belts
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| GB 12732-1991 | English | RFQ |
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PDF similar to GB 12732-2008
Basic data | Standard ID | GB 12732-2008 (GB12732-2008) | | Description (Translated English) | [GB/T 12732-2008] Automotive V-belts | | Sector / Industry | National Standard | | Classification of Chinese Standard | G42 | | Classification of International Standard | 83.140.01 | | Word Count Estimation | 7,741 | | Date of Issue | 2008-04-01 | | Date of Implementation | 2008-10-01 | | Older Standard (superseded by this standard) | GB 12732-1996 | | Quoted Standard | GB/T 3686; GB/T 11545; GB/T 13352 | | Adopted Standard | JASO E107-1988, NEQ | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 5, 2008 (No. 118 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the classification of automotive V-belts products, materials, requirements, sampling, test methods and marking, labeling, packaging, storage and transport rules. This standard applies to automobile engine driven auxiliary equipment (eg: fans, generators, pumps, compressors, power steering pumps, etc.) automotive V-belts. | GB 12732-2008: [GB/T 12732-2008] Automotive V-belts---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Automotive V-belts
ICS 83.140.01
G42
National Standards of People's Republic of China
Replacing GB 12732-1996
Cars with Vp
Posted 2008-04-01
2008-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
5.3.4 This standard is mandatory, the rest are recommended.
This corresponds to the Japan Automobile Standards Association standards JASOE107-88 "Automotive V-belts", with a degree of consistency JASOE107-88
Non-equivalent.
This standard replaces GB 12732-1996 "car V belt."
The main difference between this standard and JASOE107-88 as follows.
--- Omitted V belt fatigue test methods, the use of ISO 5287 "tape drive Fatigue Testing the automotive industry with narrow V-belt," insufficient
Section shall be supplemented by JASOE107; namely GB/T 11545 referenced on;
--- Deleting the V-belt pulley size and length measuring size, the use of ISO 2790 "with the automotive industry drive V-belt and pulley size"
Insufficient part shall be supplemented by JASOE107; namely GB/T 13352 referenced on;
--- Increase AV15 model car V belt.
This standard compared with GB 12732-1996 main changes are as follows.
--- Remove the V-belt Qualified original fatigue life requirements (1996 version 4.6.1), instead of the original one product requirements, canceled a product;
--- Remove glass fiber rope V belt Qualified Fatigue Test tension (1996 version 6.5.2);
--- Increased trimming of formula V with the appearance of quality requirements (edition 5.1).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard tape by the chemical industry Standardization Technical focal point.
This standard was drafted. Zijingang Belt Co., Ltd., Zhejiang three Guinness Rubber Co., Ltd., Guizhou public Rubber Co.
Secretary, Zhejiang three-dimensional Rubber Products Co., Northwestern Polytechnical University, Weishi County, Henan Zhongyuan Rubber Co., Ltd., Qingdao Rubber Industry Institute
The study.
The main drafters of this standard. Pang Long Zhi, Zheng Youcan, stone water Xiang, Xiang Xue Wei, Mawen Kang, Li Shujun, Zhangqing Jun, Hand deep.
This standard replaces the standards previously issued as follows.
--- GB 12732-1991, GB 12732-1996.
Cars with Vp
1 Scope
This standard specifies the car V-belt (hereinafter referred to as V-belt) the classification of products, materials, requirements, sampling, test methods and marking, labeling, package
Loading, storage and transportation rules.
This standard applies to cars with an internal combustion engine-driven auxiliary equipment (for example. fans, generators, pumps, compressors, power steering pumps, etc.) steam
Car V-belt.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Strength and elongation test method GB/T 3686 V belt stretching
GB/T 11545 Automotive V belt fatigue test method (GB/T 11545-1996, eqv ISO 5287. 1985)
GB/T 13352 Automotive V Size (GB/T 13352-1996, neq ISO 2790. 1989)
Category 3
Type 3.1
V-belt type of edging and trimming V-belts V-belts according to its structure is divided into two kinds. Trimming V-belt is divided into. general Trimming V-belt, with teeth cut
Edge V belt clip and primer three types Buce edge V belt (see Figure 1).
a) wrapped V belt b) Normal Trimming V-belt
c) the toothed belt trimming V d) primer Buce edge V belt clip
1 --- cloth;
2 --- top cloth;
3 --- rubber roof;
4 --- rubber buffer;
5 --- core cord;
6 --- primer;
7 --- end of plastic cloth;
8 --- base fabric.
Chart 1 Vp band
3.2 Model
V-belts should have a symmetrical trapezoidal cross-section, according to the model of the V-belt top width divided AV10, AV13, AV15, AV17, AV22
Other five.
4 Materials
4.1 Rubber
Top plastic, rubber buffer, consisting of primer should be uniform, and its performance should be suitable for their proper performance.
4.2 fabric
Cloth, cloth top, bottom and bottom rubber cloth fabric should be cotton or synthetic fibers woven into the cloth, its warp and weft density should be uniform, the yarn
And the fabric must not have defects, distortions affecting the quality defects.
4.3 core cord
Core rope cord should be a high-performance polyester fiber and other fibers, which should be uniform twist.
5 Requirements
5.1 Appearance quality
The appearance of the V-belt should not have any visible impact and use of distortion, cracks, holes, bubbles and embedded objects and other defects. Hemming formula V
With the top surface of the one-sided burr width not exceeding 0.5mm, cloth interior trim package can not be damaged. Trimming V belt on both sides and the top surface of the cut is not allowed
Cut heavy side, not allowed to have a hierarchical, top cloth over sewing cord disconnected and obvious defects such as bending.
5.2 Dimensions
V Size and deviation should be consistent with the provisions of GB/T 13352 of.
5.3 Physical properties
5.3.1 Tensile Properties
V belt tensile strength, elongation force reference in Table 1.
Strength, reference force elongation in Table 1 Vp band stretching
Model AV10 AV13 AV15 AV17 AV22
Tensile strength/N ≥ 2260 3140 3700 4420 7060
Reference force elongation /% ≤ 4 4 4 6 6
Reference force/N 790 1480 1800 2360 3930
5.3.2 high temperature performance
V 7.3 with high temperature resistance according to the method specified test after test V belt does not allow cracks.
5.3.3 low temperature performance
V with low temperature resistance test according to the method specified in 7.4, V belt after the test does not allow cracks.
5.3.4 Fatigue Life
6 Sampling
6.1 V belt should be carried out one by one appearance quality inspection.
6.2 the same type of continuous manufacturing, the same material V belt to more than 50,000 batch. Extraction should be less than 0.5%. Feet
Inch inspection, there are requirements with the group one by one V-belt should be the length of the examination, with the group and make a mark.
6.3 V with tensile properties of each type of test performed at least twice a month.
6.4 V with high temperature and low temperature tests should be conducted at least once every quarter, the number of samples of not less than two.
Quarterly test 6.5 V belt fatigue test, for the same types of the same material V belt, more than 120,000 per month once per month
Less than 120 000 tests once every six months. Each test sample of at least two. In the test if a (or two) unqualified,
It should be taken with a number of unqualified V double the number of transects retest. If a re-examination transect is still unsatisfactory, then the product is substandard
Goods. And the test should be carried out with other batches.
6.6 has failed projects in the 6.3 to 6.4 in each of the pilot project, should take another double batch of samples V-belt, unqualified project
Retest, if the test results there is a still unsatisfactory, then the product is substandard products.
7 Test methods
7.1 Dimensions
The length of the V-belt, exposing the height of center distance variation according to GB/T 13352 provisions measurements.
7.2 Tensile test
V-belt and the tensile strength of the reference force elongation according to GB/T 3686 provisions test.
7.3 High Temperature Test
Samples from the test sample cut length of 250mm, placed in a temperature of 100 ℃ ± 1 ℃ under continuous test 70 + 5 0h, then at room temperature
On cooling at least 2h, after cooling the sample in Table 2 having a predetermined diameter tube or rod bent in the normal direction of the belt bending, the specimen was observed
Whether the cracks.
Table 2 millimeters in diameter rod
Model AV10 AV13 AV15 AV17 AV22
Tube rod diameter 4550505560
7.4 Low Temperature Test
The specimen has been subjected to high-temperature test of 7.3, at a temperature of -30 ℃ ± 1 ℃ under 70 + 2 0h immediately after having specified in Table 2 straight
The diameter of the rods bent bending direction normal to observe whether cracks on the specimen.
7.5 Fatigue Test
V belt fatigue life according to GB/T 11545 provisions test.
8 Marking, labeling, packaging, storage and transport
8.1 mark
8.1.1 Each V belt have clear signs of water washed away, including the following.
a) manufacturer's name and trademarks;
b) Specification (mark);
c) manufacturing year, month or lot number.
8.1.2 shall be equipped with a set of packaging or other location marked with a flag group.
8.2 Label
V belt by model and the effective length of the tying. Mark and with the group code should be the same for each bundle of V-belts, and the use of appropriate bags or packaging
Box product packaging. Should label the bag and box, on which shall include the following.
a) manufacturer's name and trademarks;
b) mark;
c) the number of V-belt bag or box;
d) manufacturing year, month;
e) quality inspection departments qualified chapter;
f) V belt use and maintenance conditions.
8.3 Storage and transport
8.3.1 V belt during transportation and storage, avoid direct sunlight or rain and snow Baptist leaching, kept clean to prevent acid, alkali, oils and organic solvents Movies
Book GB 12732-2008
Rang substance contact V belt quality. Against mechanical damage, and more than 1m away from the heating device.
8.3.2 storage warehouse temperature should be maintained at between -18 ℃ ~ + 40 ℃, relative humidity should not exceed 80%.
8.3.3 during storage should be avoided so that the V-belt to put too much weight and deformed, preferably V-belts hanging on the crescent-shaped rack or flatly put
On the shelf.
8.4 In compliance with the standard conditions of 8.3, for manufacturing to ensure that products from the date of manufacture, the storage period not exceeding two years, and its physical and mechanical properties
You can still meet this standard.
8002-
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