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GB/T 4341.2-2016 English PDF

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GB/T 4341.2-2016: Metallic materials -- Shore hardness test -- Part 2: Verification of hardness testers
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Basic data

Standard ID GB/T 4341.2-2016 (GB/T4341.2-2016)
Description (Translated English) Metallic materials -- Shore hardness test -- Part 2: Verification of hardness testers
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N71
Classification of International Standard 19.060; 77.040.10
Word Count Estimation 14,115
Date of Issue 2016-10-13
Date of Implementation 2017-05-01
Regulation (derived from) National Standard Notice No.1716 of 2016
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

GB/T 4341.2-2016: Metallic materials -- Shore hardness test -- Part 2: Verification of hardness testers


---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.
Metallic materials - Shore hardness test - Part 2. Verification of hardness testers ICS 19.060; 77.040.10 N71 National Standards of People's Republic of China Shore hardness test of metallic materials Part 2. inspection of the durometer Part 2. Verificationofhardnesstesters 2016-10-13 released 2017-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I 1 Scope 1 2 normative reference document 1 General requirements Direct test 5 indirect test 3 6 inspection cycle 4 7 inspection report 4 Appendix A (informative) Type 6 of the Shore durometer Appendix B (informative appendix) Shore hardness tester Indication error measurement Uncertainty evaluation example 8

Foreword

GB/T 4341 "Shore hardness test of metal materials" is divided into the following three parts. - Part 1. Test methods; - Part 2. Test of hardness; Part 3. Calibration of standard hardness blocks. This part is part 2 of GB/T 4341. This part is drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents. This part is made by the China Machinery Industry Federation. This part is headed by the National Standardization Technical Committee of Testing Machines (SAC/TC122). This part of the drafting unit. Changchun Institute of Mechanical Science and Technology Co., Ltd., Shanghai Quality Supervision, Inspection and Technology Research Institute, Shanghai measurement Technology Research Institute, China Aviation Industry Corporation Beijing Great Wall Metrology and Testing Technology Research Institute, Shenyang Star Star Experimental Instrument Co., Ltd., Stephen City Fengze Donghai instrument hardness block factory. The main drafters of this part. Chen Hongcheng, Shen Qi, Yu Weiliang, Shi Wei, Zhang Fenglin, Chen Jun salary. Shore hardness test of metallic materials Part 2. inspection of the durometer

1 Scope

This part of GB/T 4341 specifies the Shore hardness tester (hereinafter referred to as hardness) for the determination of Shore hardness according to GB/T 4341.1. Testing method. This part applies to the direct test of the basic functions of the hardness tester and the indirect inspection of the hardness tester. Indirect test method Used independently for routine routine inspection of the durometer used.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Metallic materials - Shore hardness test - Part 1. Test methods Metallic materials - Shore hardness test - Part 3. Calibration of standard hardness blocks GB/T

3 General requirements

Before the hardness tester is tested, the hardness tester should be checked to ensure that. a) the correct installation of hardness, so that the test bench in a horizontal state; b) operate the handwheel, so that the measuring tube along the rail, the next flexible and can apply the appropriate force on the sample; c) Slowly turn the knob to the appropriate position (D type) or rubber ball exhaust (type C) so that the punch can fall freely. Note. Refer to Appendix A for the type of hardness.

4 direct inspection

4.1 General 4.1.1 Direct inspection is only applicable to D-type Shore durometer. The direct test should be carried out at a temperature in the range of 10 ° C to 35 ° C, as in this temperature Beyond the scope of the test, it should be marked in the inspection report/certificate. 4.1.2 Test items, inspection equipment and its technical performance in Table 1, the use of measuring instruments should be traceable to the national benchmark. Table 1 testing items, inspection equipment and technical performance Serial number detection item Inspection equipment Name Technical performance 1 The minimum level of the level level is 0.10mm/m 2 rack and test machine quality electronic scale 10kg, grade

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