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JJG 1047-2009

JJG 1047-2009_English: PDF (JJG1047-2009)
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BASIC DATA
Standard ID JJG 1047-2009 (JJG1047-2009)
Description (Translated English) Metallic Knoop Hardness Testers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.100
Word Count Estimation 18,130
Date of Issue 2009-07-30
Date of Implementation 2009-10-30
Quoted Standard ISO 4545-1-2005; ISO 4545-2-2005; ISO 4545-3-2005; JJG 144-2007
Drafting Organization Shanghai Measurement and Testing Technology
Administrative Organization National Force & Hardness Measurement Technical Committee
Regulation (derived from) AQSIQ Announcement No. 78 of 2009
Summary This standard applies to test force range 0. 09807N to 19. 614N fixed metal Knoop hardness of the initial verification, testing and use of follow-up inspection.

JJG 1047-2009
Metallic Knoop Hardness Testers
State verification procedures People's Republic of China
Metal Knoop hardness
Posted 2009-07-30
2009-10-30 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Metal Knoop hardness test procedures
Knoop
The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on July 30, 2009, and from
From October 30, 2009 into effect.
NFP. National strength, hardness measurement technology committee
Main drafting unit. Shanghai Institute of Measurement and Testing
China Institute of Metrology
Participated in the drafting unit. China Aviation Industry Corporation No. 304 Institute
On Haitai Ming Optical Instrument Co., Ltd.
Shanghai Hengyi Precision Instrument Co., Ltd.
Shanghai Hao Micro-Optoelectronics Technology Co.,
This procedure entrust national force, hardness measurement technical committee responsible for the interpretation
The main drafters of this procedure.
Yu Weiliang (Shanghai Institute of Measurement and Testing)
Liu Jiping (China Institute of Metrology)
Drafters participate.
Shi Wei (China Aviation Industry Corporation No. 304 Institute)
Choi Ma Liang (on Haitai Ming Optical Instrument Co., Ltd.)
Xu Yongliang (Shanghai Hengyi Precision Instrument Co., Ltd.)
Yao Gang (Shanghai Hao Micro-Optoelectronics Technology Co.)
table of Contents
1 Scope (1)
2. Referenced Documents (1)
3 Overview (1)
4 metering performance requirements (2)
4.1 Test Force (2)
4.2 indenter (2)
4.3 indentation means (3)
4.4 shows the value of the maximum permissible error and Repeatability (3)
5 General technical requirements (4)
6 Control of measuring instruments (4)
6.1 Verification condition (4)
6.2 test items and test methods (5)
6.3 Verification Results Processing (7)
6.4 test cycle (7)
Appendix A Knoop hardness test force test recording format (8)
Appendix B shows the Knoop hardness test value recording format (9)
Appendix C Knoop diamond indenter test recording format (10)
Appendix D Knoop hardness test certificate within the page format (11)
Appendix E Knoop hardness test results in the notice page format (12)
Appendix F Knoop diamond indenter test certificate and test results in the notice page format (13)
Metal Knoop hardness test procedures
1 Scope
This procedure is applied to the test force range 0.09807N 19.614N fixed Knoop hardness of the metal for the first time
Test, follow-up and verification in test use.
2 Citations
The regulations cited in the following documents.
ISO 4545.1-2005 Metalicmaterials-Knoophardnesstest-Part 1. Testmethod
(. Test methods for metallic materials Knoop hardness test - Part 1)
ISO 4545.2-2005 Metalicmaterials-Knoophardnesstest-Part 2. Verification
andcalibrationoftestingmachine (Knoop hardness test of metallic materials
Part 2. Verification and calibration of hardness)
ISO 4545.3-2005 Metalicmaterials-Knoophardnesstest-Part 3. Calibration
ofreferenceblocks (metal materials Knoop hardness test - Part 3. Standard
Calibration quasi hardness block)
JJG 144-2007 standard dynamometer test procedures
Should pay attention to the use of this procedure by using the currently valid version of the documents cited.
3 Overview
Metal Knoop hardness (hereinafter referred to as hardness) suitable for Knoop hardness measurement of various metallic materials.
Knoop hardness test principle. the angle α between the top two ribs and β 172.5 ° angle of 130 ° diamond pyramid
Indenter using a predetermined test force into the surface of the sample, after a certain period of holding removable test force (see Figure 1). test
Suppliers force divided by the surface area of the specimen is projected indentation Knoop hardness. Long diagonal measurement of the indentation in the actual operation
Degrees, according to the formula (1) to calculate the Knoop hardness values.
HK = 0.102
= 0.102
cd2
≈1.451
d2
(1)
Where. HK --- Knoop hardness symbol;
F --- test force, N;