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GB/T 43432.3-2023: Metallic materials - Barcol hardness test - Part 3: Calibration of reference blocks
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Metallic materials - Barcol hardness test - Part 3: Calibration of reference blocks
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GB/T 43432.3-2023
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Basic data | Standard ID | GB/T 43432.3-2023 (GB/T43432.3-2023) | | Description (Translated English) | Metallic materials - Barcol hardness test - Part 3: Calibration of reference blocks | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N71 | | Classification of International Standard | 19.060 | | Word Count Estimation | 12,143 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 43432.3-2023: Metallic materials - Barcol hardness test - Part 3: Calibration of reference blocks
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ICS 19:060
CCSN71
National Standards of People's Republic of China
Barcol hardness test of metal materials
Part 3: Calibration of standard hardness blocks
Metalicmaterials-Barcolhardnesstest-
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Manufacturing of standard blocks 1
5 Standard Vickers hardness machine for testing 1
6 Calibration method 2
7 Number of indentations 2
8 Hardness value 2
9 Hardness uniformity 2
10 logo 2
11 Validity 3
Appendix A (informative) Conversion table of Vickers hardness value (HV) and Barcol hardness value (HBa) for standard block calibration 4
Appendix B (Informative) Measurement Uncertainty Assessment Method for Hardness Value of Barcol Standard Hardness Block 5
Reference 7
Foreword
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document is Part 3 of GB/T 43432 "Barcol Hardness Test of Metallic Materials": GB/T 43432 has released the following
part:
---Part 2: Inspection and calibration of hardness tester;
---Part 3: Calibration of standard hardness blocks:
Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Testing Machine Standardization Technical Committee (SAC/TC122):
This document was drafted by: China Machinery Test Equipment Co:, Ltd:, Shenyang Tianxing Test Instrument Co:, Ltd:, China Aviation Industry Corporation
The group company Beijing Great Wall Measurement and Testing Technology Research Institute, Jilin University, Quanzhou Fengze Donghai Instrument Hardness Block Factory, Guangzhou University, Guangdong Petrochemical
College of Engineering, Changsha Dicastal Technology Co:, Ltd:, China Machinery Testing Equipment (Jiangsu) Co:, Ltd:
The main drafters of this document: Ren Xia, Zhang Luming, Shi Wei, Zhao Hongwei, Chen Junxin, Xu Zhonggen, Zhu Guanhua, Liu Jun, Ma Wei:
Introduction
GB/T 43432 "Barcol Hardness Test of Metal Materials" aims to standardize the test methods and inspection of test instruments for Barcol hardness: It is planned to be composed of three
composed of parts:
---Part 1: Test methods: The purpose is to establish the procedures and methods to be followed for Barcol hardness testing:
---Part 2: Inspection and calibration of hardness tester: The purpose is to stipulate the technical requirements and inspection and calibration methods that the Barcol hardness tester must meet:
Law: It stipulates the direct inspection method for testing the basic functions of the hardness tester and the indirect inspection method for testing the comprehensive performance of the hardness tester:
---Part 3: Calibration of standard hardness blocks: The purpose is to determine the technical requirements and calibration methods that the Barcol standard hardness block needs to meet:
Barcol hardness test of metal materials
Part 3: Calibration of standard hardness blocks
1 Scope
This document specifies the Barcol standard hardness block (hereinafter referred to as the standard hardness block) used for indirect inspection of the Barcol hardness tester according to GB/T 43432:2:
Calibration method of standard block):
This document is applicable to the calibration of Barcol standard hardness blocks:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 4340:3-2012 Vickers hardness test of metallic materials Part 3: Calibration of standard hardness blocks
GB/T 36416:1 Testing machine vocabulary Part 1: Material testing machines
3 Terms and definitions
The terms and definitions defined in GB/T 36416:1 apply to this document:
4 Manufacturing of standard blocks
4:1 Standard blocks should be specially manufactured: The manufacturing process of the standard block should ensure that the standard block obtains the necessary homogeneity, structural stability and hardness:
Uniformity:
4:2 The geometric dimensions and technical requirements of the standard block should comply with the provisions of Table 1:
Table 1 Geometric dimensions and technical requirements of standard blocks
Geometry
mm
Diameter Thickness
Test surface and supporting surface
flatness
mm
Test surface and supporting surface
parallelism
mm/mm
test surface and supporting surface
Surface roughness Raa
μm
28~40 0:8±0:1 ≤0:05 ≤0:05/50 ≤0:4
a The sampling length for measuring surface roughness is 0:8mm (see 3:1:9 of GB/T 3505-2009):
4:3 The test surface and supporting surface of the standard block should not have defects such as cracks or scratches:
5 Standard Vickers hardness machine for testing
5:1 Use a standard Vickers hardness machine for calibration: The standard Vickers hardness machine should comply with the provisions of Chapter 4 of GB/T 4340:3-2012:
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