GB/T 519-2017 PDF in English
GB/T 519-2017 (GB/T519-2017, GBT 519-2017, GBT519-2017)
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GB/T 519-2017 | English | 200 |
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Test methods for measuring physical properties of pneumatic tyres
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GB/T 519-2008 | English | 519 |
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Test methods for measuring physical properties of pneumatic tyres
| Obsolete |
GB/T 519-2003 | English | 479 |
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Test method for measuring physical properties of pneumatic tyres
| Obsolete |
GB/T 519-1993 | English | 359 |
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Test method for measuring physical properties of pneumatic tyres
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Standards related to (historical): GB/T 519-2017
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GB/T 519-2017: PDF in English (GBT 519-2017) GB/T 519-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.160.01
G 41
Replacing GB/T 519-2008
Test methods for measuring
physical properties of pneumatic tyres
ISSUED ON. MAY 31, 2017
IMPLEMENTED ON. APRIL 01, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
3. No action is required - Full-copy of this standard will be automatically &
immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Sample preparation ... 6
5 Test for physical properties of covers ... 6
6 Penetration analysis determination method for inside liners of tyres ... 15
7 Test for physical properties of inner tubes ... 16
8 Test for physical properties of flaps ... 22
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 519-2008 “Test methods for measuring physical
properties of pneumatic tyres”. Compared with GB/T 519-2008, the main technical
changes are as follows.
- MODIFY the normative references (see Clause 2 of this Standard, Clause 2 of
2008 edition);
- MODIFY the terms and definitions, DELETE GB/T 6039 (see Clause 3 of this
Standard, Clause 3 of 2008 edition);
- ADD the selection of sample preparation tools (see 4.1);
- DELETE the sliding abrasion test (see 2008 version 5.1.3.2);
- ADD the DIN abrasion test (see 5.1.3.2);
- MODIFY the length of the sample, from about 150 mm ~ 250mm to not less than
150 mm (see 5.2.1.1.1 of this Standard, 5.2.1.1 of 2008 edition);
- ADD the adhesive strength between cord plies after aging (see 5.2.2.6);
- MODIFY “it shall cut a length of tyre of about 60 mm” TO “it shall cut a length of
tyre of more than 200 mm” [see 5.3.3.1.2 d) of this Standard, 5.3.3.1.3 b) of 2008
edition];
- MODIFY the dimension of the hardness sample (see 7.6 and 8.2 of this Standard,
7.6 and 8.2 of 2008 edition).
This Standard is proposed by China Petroleum and Chemical Industry Association.
This Standard is under the jurisdiction of National Technical Committee on Tyre Rims
of Standardization Administration of China (SAC/TC 19).
Drafting organizations of this Standard. Triangle Tire Co. Ltd., Shandong Linglong Tire
Co., Ltd., Sailun Jinyu Group Co., Ltd., Wanli Tire Co., Ltd., Beijing Research and
Design Institute of Rubber Industry, Aeolus Tyre Co., Ltd., Guizhou Tyre Co., Ltd.,
Zhejiang Ketai Tire Co., Ltd.
Main drafters of this Standard. Ni Shujie, Li Donglin, Chen Shaomei, Hou Xiaoqian,
Wang Zhiyuan, Wang Kexian, Xu Lihong, Ren Shaowen, Feng Ping, Xia Huasong,
Mou Shouyong, Li Shuhuan.
The previous versions of the standard replaced by this Standard are as follows.
- GB/T 519-1986, GB/T 519-1993, GB/T 519-2003, GB/T 519-2008.
Test methods for measuring
physical properties of pneumatic tyres
1 Scope
This Standard specifies the terms and definitions, sample preparation, test for physical
properties of covers, penetration analysis determination method for inside liners of
tyres, test for physical properties of inner tubes and test for physical properties of flaps
for test methods for measuring physical properties of pneumatic tyres (covers, inner
tubes and flaps)
This Standard applies to passenger car tyres, truck tyres, agricultural tyres, earth-
mover tyres and industrial pneumatic tyres.
This Standard does not apply to aircraft tyres, motorcycle tyres and cycle tyres.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the dated edition cited applies. For undated
references, the latest edition of the referenced document (including all amendments)
applies.
GB/T 528 Rubber, vulcanized or thermoplastic - Determination of tensile stress-
strain properties
GB/T 529 Rubber, vulcanized or thermoplastic - Determination of tear strength
(Trouser, angle and crescent test pieces)
GB/T 531.1 Rubber, vulcanized or thermoplastic - Determination of indentation
hardness - Part 1. Durometer method (Shore hardness)
GB/T 531.2 Rubber, vulcanized or thermoplastic - Determination of indentation
hardness - Part 2. IRHD pocket meter method
GB/T 532 Rubber, vulcanized or thermoplastic - Determination of adhesion to textile
fabric
GB/T 1682 Rubber, vulcanized - Determination of low-temperature brittleness -
Single test piece method
GB/T 1689 Rubber vulcanized - Determination of abrasion resistance (Akron
machine)
GB/T 2941 Rubber - General procedures for preparing and conditioning test pieces
for physical test methods
GB/T 3512 Rubber, vulcanized or thermoplastic - Accelerated ageing and heat
resistance tests
GB/T 6326 Tyre terms and definitions
GB/T 9867 Rubber, vulcanized or thermoplastic - Determination of abrasion
resistance using a rotating cylindrical drum device
GB/T 11181 Steel cord for radial tyre
3 Terms and definitions
For the purpose of this document, the terms and definitions defined in GB/T 6326 apply.
4 Sample preparation
4.1 Sample preparation tools are selected according to GB/T 2941, it may also use
other sample preparation tools that meet the requirements for test sample preparation.
4.2 The finished product after vulcanization shall be conditioned indoors before
sampling. The conditioning time of covers is not less than 24 h; the conditioning time
of inner tubes and flaps is not less than 12 h.
4.3 If the sample taken from the finished product is not smooth in surface or is thicker
than the corresponding standard provisions, it shall be cut and grinded according to
GB/T 2941. When the thickness of the sample is less than the corresponding standard
provisions, the sample can be cut according to the actual thickness of the sample.
5 Test for physical properties of covers
5.1 Test for physical properties of rubber materials
5.1.1 Tensile properties
5.1.1.1 Sampling methods for each part.
- Tread part. TAKE the center line of crown as the datum, and CUT the sample
circumferentially along the tyre. The rubber thickness of crown part is not more
ply is a set.
5.2.2.1.2 CUT a peeling hole of 20 mm ~ 50 mm between the peeling ply at one end
of the sample described in 5.2.1.1. To prevent mistaking cords and plies, cut a side
hole of uniform depth on both sides of the sample’s peeling ply. For diagonal tyres, the
depth of the sample’s cutting hole is 2.5 mm, and for radial tyres, the depth of the
sample’s cutting hole is 3.5 mm, so as to ensure that the effective peeling width of the
sample is 25 mm ± 0.5 mm. Do not cut off the cord when cutting the rubber strips on
both sides of the sample.
5.2.2.1.3 DETERMINE the adhesive strength of the above samples according to GB/T
532. The peeling order is from the inner ply to the outer ply, and the inter-ply adhesive
shall be attached to the bottom of the peeling ply. There shall be no mistaking cords or
connectors, otherwise the peel value is not included in the results.
5.2.2.2 Adhesive strength between tread rubber and breaker of diagonal tyres,
between tread rubber and belt of radial tyres or between tread rubber and cap
ply of radial tyres
The sample is the same as 5.2.1.1. When clamping the sample, the rubber ply shall
be clamped on the holder. The steps are the same as 5.2.2.1.
5.2.2.3 Adhesive strength between sidewall rubber and cord ply
See 5.2.1.2 for the sample. CUT a peeling hole of 20 mm ~ 40 mm between the rubber
and the carcass cord ply or between the rubber and the carcass steel cord ply from
the shoulder of the sample. The test procedure is the same as 5.2.2.1.
5.2.2.4 Adhesive strength between carcass cord ply and beaker cord ply, and
between beaker cord ply and beaker cord ply of diagonal tyres
See 5.2.1.1 for the sample. TAKE 2 or 3 plies of cords as a set. The test procedure is
the same as 5.2.2.1.
5.2.2.5 Adhesive strength between carcass cord ply and belt, between belt and
belt, between belt and cap ply, and between cap ply and cap ply of radial tyres
See 5.2.1.1 for the sample. TAKE 2 piles as a set. The carcass cord ply shall be
clamped on the holder during the test, the rest of the test procedure is the same as
5.2.2.1.
5.2.2.6 Adhesive strength between cord plies after aging
The sample is subjected to aging according to GB/T 3512. TAKE out the sample after
aging. PLACE the sample according to the provisions of GB/T 2941. MEASURE the
adhesive strength between cord piles after aging. The test procedure is in accordance
5.3.3 Tensile properties of cords
5.3.3.1 Sampling
5.3.3.1.1 Diagonal tyres
The sampling consists of two cases, i.e. odd and even plies.
a) When sampling from the odd cord plies, take 2 cords with a distance of ate least
40 mm from the first ply of the crown cord ply to obtain two trace lin...
...... Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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