Powered by Google-Search & Google-Books Chinese Standards Shop Database: 169759 (Aug 9, 2020)
HOME  COVID-19   Quotation   Tax   Examples Standard-List   Contact-Us   View-Cart
  

JJG 147-2017

Chinese Standard: 'JJG 147-2017'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
JJG 147-2017English369 Add to Cart Days<=3 Metallic Brinell Hardness Reference Blocks Valid JJG 147-2017
JJG 147-2017Chinese20 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

   

BASIC DATA
Standard ID JJG 147-2017 (JJG147-2017)
Description (Translated English) (Standard Metallic Brinell Hardness Block Verification Regulation)
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Word Count Estimation 16,114
Date of Issue 2017-02-28
Date of Implementation 2017-08-28
Older Standard (superseded by this standard) JJG 147-2005

JJG 147-2017
(Standard Metallic Brinell Hardness Block Verification Regulation)
People's Republic of China National Metrological Verification Procedures
Standard metal Brinell hardness block
2017-02-28 Posted
2017-08-28 Implementation
General Administration of Quality Supervision, Inspection and Quarantine released
Standard metal Brinell hardness block
Verification procedures
Replacing JJG 147-2005
The focal point. The national strength of hardness measurement Technical Committee
The main drafting unit. China Institute of Metrology
Zhejiang Institute of Metrology
Laizhou Huayin Test Instrument Co., Ltd.
Shanghai Institute of Quality Supervision, Inspection and Technology
Participate in the drafting unit. China Institute of Test Technology
Beijing Institute of Metrology and Measurement
Quanzhou Fortress East China Instrument hardness block plant
Shenyang Star Test Instrument Co., Ltd.
This procedure entrusts the national hardness measurement technical committee responsible for the interpretation
The main drafters of this procedure.
Liu Jiping (China Institute of Metrology)
Cao Hao (Zhejiang Institute of Metrology)
Wang Jingtao (Laizhou Huayin Test Instrument Co., Ltd.)
Shen Qi (Shanghai Institute of Quality Supervision, Inspection and Technology)
Participate in the drafters.
Xu Zhimin (China Test Technology Research Institute)
Wang Ningxi (Beijing Institute of Metrology and Measurement)
Chen Jun salary (Quanzhou Fortress East China Sea instrument hardness block plant)
Zhang Fenglin (Shenyang Tianxing Experimental Instrument Co., Ltd.)
table of Contents
Introduction (Ⅱ)
1 Range (1)
2 References (1)
3 Overview (1)
4 measurement performance requirements (2)
4.1 Standard block uniformity Jrel (d) (2)
4.2 standard block hardness range (2)
4.3 Standard indentation (2)
4.4 standard block stability (3)
5 General technical requirements (3)
5.1 standard block geometry and surface roughness (3)
5.2 other requirements of the standard block (4)
6 measuring instruments control (4)
6.1 test conditions (4)
6.2 test items and test methods (4)
6.3 test results of the treatment (6)
6.4 test cycle (6)
Appendix A standard metal Brinell hardness block calibration uncertainty evaluation (7)
Appendix B Standard Metal Brinell Block Test Original Recording Format (9)
Appendix C standard metal Brinell hardness test certificate and test results within the page format (10)
introduction
This regulation is revised in accordance with JJF1002-2010 "Rules for the Compilation of National Metrological Verification Procedures". This procedure and
JJG 147-2005 compared to the main changes are as follows.
--- Modify the original code in the standard hardness of the definition of uniformity, and ISO 6506-3.2014 in the degree of uniformity
Consistent definition
--- Modify the standard hardness of the hardness range, in line with the requirements of ISO 6506-3.2014;
--- Increased the definition of standard indentation and requirements;
--- Given the number of standard indentation effective data requirements;
--- The appearance of the hardness test block, the following temperatures below -70 ℃ cryogenic treatment and after at least six months since
However, the effectiveness of such requirements on the hardness block factory inspection.
The previous version of the rules of the release.
--- JJG 147-2005;
--- JJG 147-1991;
--- JJG 147-1984.
Standard metal Brinell hardness test procedures
1 Scope
This procedure applies to the first test of standard metal Brinell hardness block, follow-up test and in-service inspection.
2 References
The procedures cited in the following documents.
JJG 2005 Brinell hardness measuring instrument verification system
Terms and definitions for force value and hardness measurement
ISO 6506-1.2014 Brinell hardness test for metallic materials - Part 1. Test methods (Metalicmate-
rials-Brinelhardnesstest-Part 1.Testmethod)
ISO 6506-3.2014 Brinell hardness testing of metallic materials - Part 3. Calibration of standard blocks (Metalic
materials-Brinelhardnesstest-Part 3.Calibrationofreferenceblocks)
For dated references, only the dated version applies to this edition; any undated reference
The latest version (including all amendments) applies to this procedure.
3 Overview
Standard metal Brinell hardness block (hereinafter referred to as the standard block) is the indication of metal Brinell hardness test standards
appliance.
Brinell hardness test principle is to a certain diameter of the cemented carbide ball with a predetermined test force into the sample surface, the
Specified holding time after removing the test force, measuring the indentation diameter of the sample surface. According to equation (1) calculate the Brinell hardness value.
HBW = k ·
2F
πD (D-D2-d2)
(1)
In the formula.
HBW --- Brinell hardness value;
k --- unit conversion factor, k = 0.102;
F --- test force, N;
D --- ball diameter, mm;
d --- indentation diameter, mm.
Brinell hardness test head with a ball of hard alloy, Brinell hardness symbol is HBW.
Hammering Brinell hardness test can be used steel ball pressure head, hardness symbol "HBS".
Standard block hardness value representation. Symbol HBW before the hardness value, the symbol HBW followed by a sequence of digital table
Ball diameter, test force and test force retention time (s), the test force retention time of 10s ~ 15s can not be marked.
Example .200HBW10/3000/30 said Brinell hardness value of.200, carbide ball indenter diameter of 10mm,
Test force of 3000 × 9.807N, test force to maintain time of 30s.
Related standard:   JJG 155-2016  JJG 156-2016
Related PDF sample:   JJG 145-2007  JJG 150-2005
   
 
Privacy   ···   Product Quality   ···   About Us   ···   Refund Policy   ···   Fair Trading   ···   Quick Response
Field Test Asia Limited | Taxed in Singapore: 201302277C | Copyright 2012-2020