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GB/T 33835-2017

Chinese Standard: 'GB/T 33835-2017'
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Detail Information of GB/T 33835-2017; GB/T33835-2017
Description (Translated English): Test method of impact strength for friction material
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q69
Classification of International Standard: 43.040.40
Word Count Estimation: 5,586
Date of Issue: 2017-05-31
Date of Implementation: 2018-04-01
Drafting Organization: Fujian Huarong Auto Parts Co., Ltd., Shandong Province Liangshan Shenli Auto Parts Co., Ltd., Xiamen Lee Xingda Friction Material Co., Ltd., Ningguo Eagle Auto Parts Co., Ltd., Xianyang Non-metallic Mining Research Institute Co., Ltd., Taimington Friction Material Technology (Shanghai) Co., Ltd., the National Nonmetallic Products Quality Supervision and Inspection Center, Hangzhou West Lake Friction Materials Co., Ltd.
Administrative Organization: National Standard Committee on Nonmetallic Minerals and Products (SAC/TC 406)
Proposing organization: China Building Materials Federation
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee
Summary: This standard specifies the sample preparation and test methods for impact strength testing of friction materials. This standard applies to friction materials made of resin as a binder.

GB/T 33835-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.40
Q 69
Test Method of Impact
Strength for Friction Material
摩擦材料冲击强度试验方法
ISSUED ON. MAY 31, 2017
IMPLEMENTED ON. APRIL 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
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Table of Contents
Foreword ... 3
1 Scope ... 4
2 Test Conditions ... 4
3 Specimen Preparation ... 5
4 Test Procedures ... 7
5 Calculation ... 7
6 Test Report ... 8
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009.
This Standard was proposed by China Building Material Federation.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Non-Metallic Mineral Products (SAC/TC 406).
Drafting organizations of this Standard. Fujian Huari Automotive Parts Co., Ltd.,
Shandong Province Lianshan Shenli Auto Parts Co., Ltd., Xiamen Lixing Damo Friction
Material Co., Ltd., Ningguo Feiying Auto Spare Parts Co., Ltd., Xianyang Design
Institute of Non-Metallic Minerals Research, TMD Friction Technology (Shanghai) Co.,
Ltd., Non-Metallic Mineral Products Quality Supervision Test Center, and Hangzhou
Westlake Friction Material Co., Ltd.
Chief drafting staffs of this Standard. Pan Yucheng, Shang Xingchun, Su Meizhen,
Feng Jingyou, Ye Jialing, Sun Qichun, Li Panfei, Zhang Jianli, Yang Lijun, and Shen
Yongsheng.
Test Method of Impact
Strength for Friction Material
1 Scope
This Standard specifies the sample preparation and test methods for the impact
strength test of friction material.
This Standard is applicable to the friction material with resin as the binder.
2 Test Conditions
2.1 The test equipment is the simple beam pendulum impact tester; its impact energy
is divided into two levels, namely, Level-0.980 7 J and Level-3.922 8 J; the impact
velocity is of 2.9m/s.
2.2 The size and interrelationships among pendulum, specimen and supporting seat
shall conform to the provisions of Figure 1.
2.3 The consumption value of its own stored energy during the test shall be within
10% ~ 80% full scale of each level.
4 Test Procedures
4.1 Adjust the impact tester fulcrum distance L into 40.0mm±0.2mm.
4.2 Select the appropriate pendulum; the load shall meet the requirements of 2.3.
4.3 Calibrate the zero point on the dial plate of tester; place the pendulum on the pre-
lifting hook position.
4.4 Use the Vernier caliper with precision of 0.01mm to measure the specimen width
and thickness. Measure 3 points evenly distributed within 10mm range of the specimen
middle part; then take the minimum value.
4.5 Place the specimen horizontally on the framework as per the provisions of 3.2;
so that the pendulum blade can strike the entire thickness line; and align with the
specimen centerline.
4.6 Smoothly release the lock hook; so that the pendulum falls freely; and the
specimen is exerted impact load and is broken; read the consumed power from the
dial plate. The specimen shall be broken within 10mm range in the middle; otherwise,
such test results are rejected.
5 Cal......
Related standard:   GB/T 33836-2017  GB/T 37208-2018
   
 
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