GB/T 32660.3-2016 English PDF

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GB/T 32660.3-2016: Metallic materials -- Webster hardness test -- Part 3: Calibration of reference blocks
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GB/T 32660.3-2016	239	Add to Cart	3 days	Metallic materials -- Webster hardness test -- Part 3: Calibration of reference blocks	Valid

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Basic data

Standard ID: GB/T 32660.3-2016 (GB/T32660.3-2016)
Description (Translated English): Metallic materials -- Webster 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: 12,194
Date of Issue: 2016-06-14
Date of Implementation: 2017-01-01
Quoted Standard: GB/T 230.3-2012; GB/T 3505-2009; GB/T 32660.1; GB/T 32660.2
Regulation (derived from): National Standard Announcement No. 8 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
Summary: This standard specifies the technical requirements and calibration methods for standard Webster hardness blocks. This standard is applicable to the standard Wechsler hardness block (hereinafter referred to as standard block) used for Indirect Inspection of Webster Hardness Tester according to GB/T 32660.2.

GB/T 32660.3-2016: Metallic materials -- Webster 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 - Webster hardness test - Part 3. Calibration of reference blocks ICS 19.060; 77.040.10 N71 National Standards of People's Republic of China Metallic materials - Wechsler hardness test Part 3. calibration of standard hardness blocks Part 3. Calibrationofreferenceblocks 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III 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 2 8 logo 2 9 validity 3 Appendix A (informative) Standard measurement of average hardness of standard blocks Uncertainty evaluation Example 4 Appendix B (informative) Webster's hardness (HW) and Rockwell hardness (HRE) conversion value 7

Foreword

GB/T 32660 "metal material Wechsler hardness test" 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 32660. 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. Shanghai Institute of Metrology and Testing Technology, Changchun Institute of Mechanical Science and Technology Co., Ltd., Shenyang Star test equipment Co., Ltd., China Aviation Industry Corporation Beijing Great Wall Metrology and Testing Technology Research Institute, Quanzhou Fengze Donghai Instrument Hardness Block Factory. This part of the main drafters. Yu Weiliang, Wang Xuezhi, Zhang Fenglin, Shi Wei, Chen Jun pay. Metallic materials - Wechsler hardness test Part 3. calibration of standard hardness blocks

1 Scope

This part of GB/T 32660 specifies the technical requirements and calibration methods for standard Webster hardness blocks. This part applies to the standard Wechsler hardness block (hereinafter referred to as standard block) for indirect testing of Webster hardness according to GB/T 32660.2.

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 230.3-2012 Metallic materials - Rockwell hardness test - Part 3. Standard hardness blocks (A, B, C, D, E, F, G, H, K, N, T scale) (ISO 6508-3..2005, MOD) GB/T 3505-2009 Geometrical product specifications (GPS) - Surface texture - Terminology - Terms, definitions and surface structure parameters (ISO 4287..1997, IDT) Metallic materials - Webster 's hardness test - Part 1. Test methods GB/T GB/T 32660.2 Metallic materials - Wechsler hardness test - Part 2. Inspection and calibration of durometers

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, tissue stability and surface hardness Uniformity. 3.2 The geometric dimensions and technical requirements of the standard block are shown in Table 1. Table 1 Geometric dimensions and technical requirements for standard blocks Geometric dimensions mm length Width Thickness Test surface and bearing surface Flatness mm Test surface and bearing surface Parallelism mm/mm Surface roughness parameter Raa μm Test surface bearing surface 150 25 1.60 ± 0.05 ≤ 0.10 ≤ 0.10/50 ≤ 0.8 ≤ 0.8 a Measure the surface roughness of the sampling length l = 0.8mm (see GB/T 3505-2009 3.1.9). 3.3 Standard block hardness range and hardness uniformity in Table 2. ......

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