GB/T 32660.3-2016Metallic materials - Webster hardness test - Part 3: Calibration of reference blocks (English PDF)
金属材料 韦氏硬度试验 第3部分：标准硬度块的标定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 14, 2016
Implementation date
January 1, 2017
Scope
GB/T 32660.3-2016 is the English-translated version of 金属材料 韦氏硬度试验 第3部分：标准硬度块的标定.
GB/T 32660.3-2016 is the Chinese standard "Metallic materials - Webster hardness test - Part 3: Calibration of reference blocks". Its scope clause reads: 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.
Its clauses include normative reference documents; standard block manufacturing.
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Document preview — GB/T 32660.3-2016
National Standard of the People's Republic of China
- ICS
- 19.060
- Classification
- N 71
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 4 standard machine2
- 5 Calibration method2
- 6 indentation number2
- 7 hardness uniformity2
- 8 logo2
- 9 validity3
- Appendix A (informative) Standard measurement of average hardness of standard blocks Uncertainty evaluation Example4
- Appendix B (informative) Webster's hardness (HW) and Rockwell hardness (HRE) conversion value7
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.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 32660.1-2016 — Metallic materials - Webster hardness test - Part 1: Test method
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