GB/T 4341.3-2016 English PDF

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GB/T 4341.3-2016: Metallic materials -- Shore hardness test -- Part 3: Calibration of reference blocks
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Basic data

Standard ID: GB/T 4341.3-2016 (GB/T4341.3-2016)
Description (Translated English): Metallic materials -- Shore hardness test -- Part 3: Calibration of reference blocks
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N71
Classification of International Standard: 19.060; 77.040.10
Word Count Estimation: 10,150
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 4341.3-2016: Metallic materials -- Shore hardness test -- Part 3: Calibration of reference blocks

---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 3. Calibration of reference blocks ICS 19.060; 77.040.10 N71 National Standards of People's Republic of China Shore hardness test of metallic materials Part 3. calibration of standard hardness blocks Part 3. Calibrationofreferenceblocks 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 Manufacture of standard blocks 4 standard machine 2 5 Calibration method 2 6 indentation number 2 7 hardness uniformity 3 8 logo 3 9 validity 3 Appendix A (informative) Standard block Average hardness value Evaluation of measurement uncertainty Example 4

Foreword

GB/T 4341 "Shore hardness test of metal materials" is divided into the following three parts. - Part 1. Test methods; - Part 2. Inspection and calibration of hardness; Part 3. Calibration of standard hardness blocks. This part is part 3 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. State Test Technology Research Institute, Quanzhou Fortress Donghai equipment hardness block factory. This part of the main drafters. Chen Hongcheng, Weng Shiyu, Yu Weiliang, Shi Wei, Zhang Fenglin, Duan Kai, Chen Jun pay. Shore hardness test of metallic materials Part 3. calibration of standard hardness blocks

1 Scope

This part of GB/T 4341 specifies the standard Shore hardness block for indirect testing of Shore durometer according to GB/T 4341.2 (see below) Called standard block) calibration method. This part applies to the standard block for indirect testing of Shore durometer according to GB/T 4341.2.

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. GB/T 3505-2009 Geometrical product specifications (GPS) - Surface texture - Terminology - Terms, definitions and surface structure parameters (ISO 4287..1997, IDT) Metallic materials - Shore 's hardness test - Part 2. Tests for durometers GB/T 4341.2-2016

3 standard block manufacturing

3.1 The standard block shall be specially manufactured and the manufacturing process shall be such that the standard block obtains the necessary homogeneity, the stability of the tissue and the hardness Uniformity. 3.2 The geometric dimensions of the standard block are shown in Table 1. Table 1 The geometry of the standard block is in millimeters Standard block shape diameter length × width thickness Rectangular - 65 × 52 15 ± 0.1 Round 64 - 15 ± 0.1 3.3 standard block test surface parallel to the bearing surface of 0.02mm/50mm. 3.4 Standard block test surface and the bearing surface of the flatness of 0.01mm. 3.5 hardness range of 91HSD ~ 99HSD, 56HSD ~ 64HSD standard block, the test surface of the surface roughness Ra the largest A value of 0.05μm; hardness range of 26HSD ~ 34HSD standard block, the test surface of the surface roughness Ra maximum 0.1 μm; the maximum surface roughness Ra of the standard block support surface is 0.8 μm and the sampling length is l = 0.80 μm (see GB/T 3505- 2009 3.1.9). 3.6 The standard block shall not be magnetized and shall ensure that the standard block is demagnetized after its manufacturing process has been completed (before calibration). 3.7 standard block test surface and bearing surface should be no corrosion, cracks, abrasions, scratches, electrical and other defects. 3.8 standard block of various signs, the value should be clear and accurate. 3.9 To ensure long-term stability of the hardness values, the standard block should be subjected to cryogenic treatment at temperatures between -20 ° C and -70 ° C and over six months After the aging and then calibration. ......

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