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Position: Chinese Standard in English/GB/T 34007-2017
GB/T 34007-2017   Road vehicles--Brake lining friction materials--Drag test method for friction performance (English Version)
Standard No.: GB/T 34007-2017 Status:valid remind me the status change

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Language:English File Format:PDF
Word Count: 7500 words Price(USD):140.0 remind me the price change

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Implemented on:2018-6-1 Delivery: via email in 1 business day
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Standard No.: GB/T 34007-2017
English Name: Road vehicles--Brake lining friction materials--Drag test method for friction performance
Chinese Name: 道路车辆 制动衬片摩擦材料 摩擦性能拖曳试验方法
Chinese Classification: Q69    Other non-metal mine product
Professional Classification: GB    National Standard
ICS Classification: 43.040.40 43.040.40    Braking systems 43.040.40
Issued by: AQSIQ; SAC
Issued on: 2017-07-12
Implemented on: 2018-6-1
Status: valid
Language: English
File Format: PDF
Word Count: 7500 words
Price(USD): 140.0
Delivery: via email in 1 business day
Codeofchina.com is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by China Building Materials Federation. This standard is under the jurisdiction of the National Technical Committee on Non-metallic Mineral Products of Standardization Administration of China (SAC/TC 406). Road vehicles - Brake lining friction materials - Drag test method for friction performance 1 Scope This standard specifies the test equipment, test types, test devices, test steps and result report of friction performance test of brake lining friction materials for road vehicles by drag method. It is applicable to the friction performance test of brake linings for Categories M, N, O and L vehicles (hereinafter referred to as linings). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5620 Road vehicles - Braking of automotive vehicles and their trailers - Vocabulary (GB/T 5620-2002, idt ISO 611:1994) GB/T 15089 Classification of power-driven vehicles and trailers JB/T 7498 Coated abrasives - Abrasive paper QC/T 556 Automotive brake - temperature measurement and thermocouple attachment 3 Terms and definitions For the purpose of this standard, the terms and definitions specified in GB/T 5620 and GB/T 15089 as well as the following ones apply. 3.1 braking cycle braking process consisting of several times of braking operations, each of which includes a 5s braking and a 10s idling 3.2 constant pressure mode control mode to make the pressure of the line constant during the braking process 3.3 constant torque mode control mode to make the braking torque constant during the braking process 3.4 initial brake rotor temperature temperature of brake rotor when the first braking operation starts in each braking cycle 3.5 maximum brake rotor temperature temperature that is not allowed to be exceeded by that of the brake rotor in each braking cycle 4 Test equipment 4.1 The test equipment shall be qualified to execute the preset test procedures and realize automatic control. 4.2 The record equipment shall be qualified to continuously record the following parameters, and the measuring accuracy shall meet the following requirements: ——±1.5% for output braking torque; ——±1.5% for input line pressure; ——±1.5% for temperature of brake rotor. 4.3 The temperature is cooled with air during the test, with the temperature of the air not exceeding 25℃ and the air flow blowing towards the brake at (600±60)m3/h. 4.4 The equipment spindle speed shall be (660±10)r/min for idling and not less than 600r/min for full load. 4.5 Embedded type thermocouple should be used to measure the temperature of the brake rotor during the test; thermocouple attachment and temperature measurement shall meet the requirements of QC/T 556. Other measuring devices and methods may also be used, however, the specified measuring accuracy requirements shall be meet. 4.6 Radial and axial runout of the brake rotor shall not exceed 0.08mm during the equipment operation. 5 Test types and devices 5.1 Test types The test is of original sample method and sampling method. The former is testing on the original dimension samples and the latter is testing on the specified-dimension sample blocks made from the sample. Either original sample method or sampling method may be adopted for the test of disc linings for Categories M1, M2, N1, O1, O2 and L vehicles. Sampling method is adopted for the test of disc and drum linings for Categories M3, N2, N3, O3 and O4 vehicles. 5.2 Test devices of disc linings for Categories M1, M2, N1, O1, O2 and L vehicles 5.2.1 During the test by original sample method, the brake rotor and brake caliper shall be those meeting the requirements of the drawings and technical documents; the roughness of brake rotor friction surface shall be less than 15μm and the thickness shall not be less than 90% of its original thickness. 5.2.2 During the test by sampling method, a fixed disc brake caliper shall be installed on the testing machine with plunger stopper diameter of 36mm; the center of sample block is 116.5mm from the center of the brake rotor after installation. The brake rotor used in the test shall meet the following technical requirements: a) the brake rotor is solid (not ventilated), whose diameter is (278±2)mm and thickness is (9±0.5)mm; b) the material of the brake rotor body is HT250, whose rigidity of the friction surface is 180HBW to 250HBW. 5.3 Test devices of disc and drum linings for Categories M3, N2, N3, O3 and O4 vehicles A fixed disc brake caliper shall be installed on the testing machine with plunger stopper diameter of 60mm; the center of sample block is 108mm from the center of the brake rotor after installation. The brake rotor used in the test shall meet the following technical requirements: a) the brake rotor is solid (not ventilated), whose diameter is (278±2)mm and thickness is (12±0.5)mm; b) the material of the brake rotor body is HT250, whose rigidity of the friction surface is 180HBW to 250HBW.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Test equipment 5 Test types and devices 6 Test steps 7 Result report
Referred in GB/T 34007-2017:
*GB/T 5620-2020 Road vehicles—Vocabulary and definition for braking of automotive vehicles and their trailers
*GB/T 15089-2001 Classification of power-driven vehicles and trailers
*JB/T 7498-2018 Coated abrasives-Abrasive paper
*QC/T 556-1999 Automobile Brake Temperature Measurement and Thermocouple Mounting
*GB/T 13527.2-1992 Plasticized polyvinyl chloride tubing for electrical insulation
*GB/T 15550-1995 Code of practice for the preservation of raw and fresh milk by activating the lactoperoxidase system
*QC/T 966-2014 Coating technical conditions for automotive plastic parts
*GB/T 33582-2017 General principles of structural finite element analysis for mechanical products
*GB 50084-2001(2005) Code of design for sprinkler systems (2005)
*CNCA C11-05-2014 Rules for the Implementation of Compulsory Product Certification - Horns for Motor Vehicles
*CNCA C11-12-2014 China Compulsory Certification Implementation Rules - Vehicle seats and headrests
*GB/T 7360-1987 Working voltages and their measurement for lights and lighting signal devices fitted to motor vehicles and towed vehicles
*GB/T 34441-2017 Upholstered furniture - Assessment of burning behavior of mattress
*GB/T 13061-2017 Technical specification of air spring used for air suspension of commercial vehicle
GB/T 34007-2017 is referred in:
*GB/T 34425-2017 Fuel cell electric vehicles - Hydrogen refuelling nozzle
*GB 10000-1988 Human dimensions of Chinese adults
*Q/BQB 403-2003 Cold-rolled low carbon steel plate and steel strip
*GB/T 31270.13-2014 Test guidelines on environmental safety assessment for chemical pesticides. Part 13: Daphnia sp. acute immobilisation test
*GB/T 31270.14-2014 Test guidelines on environmental safety assessment for chemical pesticides. Part 14: Alga growth inhibition test
*NB/T 47013.8-2012 Nondestructive testing of pressure equipments - Part 8: Leak Testing
*GB/T 50123-1999 Standard for soil test method [2006 Version]
*YY 0065-2016 Ophthalmic instruments - Slit-lamp microscopes
Code of China
Standard
GB/T 34007-2017  Road vehicles--Brake lining friction materials--Drag test method for friction performance (English Version)
Standard No.GB/T 34007-2017
Statusvalid
LanguageEnglish
File FormatPDF
Word Count7500 words
Price(USD)140.0
Implemented on2018-6-1
Deliveryvia email in 1 business day
Detail of GB/T 34007-2017
Standard No.
GB/T 34007-2017
English Name
Road vehicles--Brake lining friction materials--Drag test method for friction performance
Chinese Name
道路车辆 制动衬片摩擦材料 摩擦性能拖曳试验方法
Chinese Classification
Q69
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2017-07-12
Implemented on
2018-6-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
7500 words
Price(USD)
140.0
Keywords
GB/T 34007-2017, GB 34007-2017, GBT 34007-2017, GB/T34007-2017, GB/T 34007, GB/T34007, GB34007-2017, GB 34007, GB34007, GBT34007-2017, GBT 34007, GBT34007
Introduction of GB/T 34007-2017
Codeofchina.com is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by China Building Materials Federation. This standard is under the jurisdiction of the National Technical Committee on Non-metallic Mineral Products of Standardization Administration of China (SAC/TC 406). Road vehicles - Brake lining friction materials - Drag test method for friction performance 1 Scope This standard specifies the test equipment, test types, test devices, test steps and result report of friction performance test of brake lining friction materials for road vehicles by drag method. It is applicable to the friction performance test of brake linings for Categories M, N, O and L vehicles (hereinafter referred to as linings). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 5620 Road vehicles - Braking of automotive vehicles and their trailers - Vocabulary (GB/T 5620-2002, idt ISO 611:1994) GB/T 15089 Classification of power-driven vehicles and trailers JB/T 7498 Coated abrasives - Abrasive paper QC/T 556 Automotive brake - temperature measurement and thermocouple attachment 3 Terms and definitions For the purpose of this standard, the terms and definitions specified in GB/T 5620 and GB/T 15089 as well as the following ones apply. 3.1 braking cycle braking process consisting of several times of braking operations, each of which includes a 5s braking and a 10s idling 3.2 constant pressure mode control mode to make the pressure of the line constant during the braking process 3.3 constant torque mode control mode to make the braking torque constant during the braking process 3.4 initial brake rotor temperature temperature of brake rotor when the first braking operation starts in each braking cycle 3.5 maximum brake rotor temperature temperature that is not allowed to be exceeded by that of the brake rotor in each braking cycle 4 Test equipment 4.1 The test equipment shall be qualified to execute the preset test procedures and realize automatic control. 4.2 The record equipment shall be qualified to continuously record the following parameters, and the measuring accuracy shall meet the following requirements: ——±1.5% for output braking torque; ——±1.5% for input line pressure; ——±1.5% for temperature of brake rotor. 4.3 The temperature is cooled with air during the test, with the temperature of the air not exceeding 25℃ and the air flow blowing towards the brake at (600±60)m3/h. 4.4 The equipment spindle speed shall be (660±10)r/min for idling and not less than 600r/min for full load. 4.5 Embedded type thermocouple should be used to measure the temperature of the brake rotor during the test; thermocouple attachment and temperature measurement shall meet the requirements of QC/T 556. Other measuring devices and methods may also be used, however, the specified measuring accuracy requirements shall be meet. 4.6 Radial and axial runout of the brake rotor shall not exceed 0.08mm during the equipment operation. 5 Test types and devices 5.1 Test types The test is of original sample method and sampling method. The former is testing on the original dimension samples and the latter is testing on the specified-dimension sample blocks made from the sample. Either original sample method or sampling method may be adopted for the test of disc linings for Categories M1, M2, N1, O1, O2 and L vehicles. Sampling method is adopted for the test of disc and drum linings for Categories M3, N2, N3, O3 and O4 vehicles. 5.2 Test devices of disc linings for Categories M1, M2, N1, O1, O2 and L vehicles 5.2.1 During the test by original sample method, the brake rotor and brake caliper shall be those meeting the requirements of the drawings and technical documents; the roughness of brake rotor friction surface shall be less than 15μm and the thickness shall not be less than 90% of its original thickness. 5.2.2 During the test by sampling method, a fixed disc brake caliper shall be installed on the testing machine with plunger stopper diameter of 36mm; the center of sample block is 116.5mm from the center of the brake rotor after installation. The brake rotor used in the test shall meet the following technical requirements: a) the brake rotor is solid (not ventilated), whose diameter is (278±2)mm and thickness is (9±0.5)mm; b) the material of the brake rotor body is HT250, whose rigidity of the friction surface is 180HBW to 250HBW. 5.3 Test devices of disc and drum linings for Categories M3, N2, N3, O3 and O4 vehicles A fixed disc brake caliper shall be installed on the testing machine with plunger stopper diameter of 60mm; the center of sample block is 108mm from the center of the brake rotor after installation. The brake rotor used in the test shall meet the following technical requirements: a) the brake rotor is solid (not ventilated), whose diameter is (278±2)mm and thickness is (12±0.5)mm; b) the material of the brake rotor body is HT250, whose rigidity of the friction surface is 180HBW to 250HBW.
Contents of GB/T 34007-2017
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Test equipment 5 Test types and devices 6 Test steps 7 Result report
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Keywords:
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