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JJF 1594-2016: Calibration Specification for Portable Rockwell Hardness Testers
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 1594-2016 | English | 369 |
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Calibration Specification for Portable Rockwell Hardness Testers
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JJF 1594-2016
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Basic data | Standard ID | JJF 1594-2016 (JJF1594-2016) | | Description (Translated English) | Calibration Specification for Portable Rockwell Hardness Testers | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Word Count Estimation | 16,120 | | Date of Issue | 2016-11-30 | | Date of Implementation | 2017-02-28 | | Regulation (derived from) | State Administration of Quality Supervision, Inspection and Quarantine Notice No.119 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | JJF 1594-2016: Calibration Specification for Portable Rockwell Hardness Testers---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.
Calibration Specification for Portable Rockwell Hardness Testers
National Metrological Technical Code of the People's Republic of China
Specification for portable Rockwell Hardness Tester
2016-11-30 release
2017-02-28 Implementation
State Administration of Quality Supervision, Inspection and Quarantine issued
Specification for portable Rockwell Hardness Tester
Unit. National force hardness measurement technology committee
The main drafting unit. Shanghai Institute of Metrology and Testing Technology
China Institute of Metrology
China Aviation Industry Beijing Great Wall Metrology and Testing Technology Research Institute
Shenyang Star Test Equipment Co., Ltd
Zhejiang Institute of Metrology
Participated in the drafting unit. Nanchang times the hardness of the block Manufacturing Co., Ltd
Liaoning Institute of Metrology
This specification entrusts the National Strength Hardness Metrology Technical Committee to explain
The main drafters of this specification.
Yu Weiliang (Shanghai Institute of Metrology and Testing Technology)
Zhang feng (China Institute of Metrology)
Shi Wei (China Aviation Industry Beijing Great Wall Measurement and Testing Technology Research Institute)
Zhang Fenglin (Shenyang Star Star Experimental Instrument Co., Ltd.)
Cao Hao (Zhejiang Institute of Metrology)
Participate in the drafters.
Wei (Nanchang times the hardness of the block Manufacturing Co., Ltd.)
Liu Wei (Liaoning Institute of Metrology)
table of Contents
Introduction (II)
1 Scope (1)
2 References (1)
3 Overview (1)
3.1 Principles (1)
3.2 hardness of the structure (2)
4 Metrological characteristics (3)
4.1 Basic performance (3)
4.2 indicating device (3)
4.3 Test force (3)
4.4 hardness test value (3)
5 Calibration conditions (4)
6 Calibration items and calibration methods (4)
6.1 Check before calibration (4)
6.2 Calibration of test force (4)
6.3 Calibration of hardness test (5)
7 Calibration results (5)
8 re-school time interval (6)
Appendix A Portable Rockwell Hardness Tester Calibration Record Page Format (7)
Appendix B Portable Rockwell Hardness Tester Calibration Certificate Page Format (8)
Appendix C Methods and Examples for Evaluating Uncertainty of Calibration of Cambridge Hardness Tester Indication Error (9)
Introduction
This specification is based on the rules set forth in JJF 1071-2010 "Rules for the Preparation of National Metrological Calibration Standards".
The specification in the development process to fully consider the national standard GB/T 230.1-2009 "metal material Rockwell hard
Degree test Part 1. Test method (A, B, C, D, E, F, G, H, K, N, T scale)
GB/T 230.2-2012 "Metallic materials Rockwell hardness test Part 2. Hardness gauges (A, B, C, D,
E, F, G, H, K, N, T scale), "GB/T 230.3-2012"
Hardness test Part 3. Standard hardness blocks (A, B, C, D, E, F, G, H, K, N, T scale)
Calibration, ISO 6508-1..2015Metalicmaterials-Rockwelhardnesstest-Part 1. Test
method, ISO 6508-2..2015Metalicmaterials-Rockwelhardnesstest-Part 2. Verifi-
cationandcalibrationoftestingmachinesandindenters, ISO 6508-3..2015Metalicma-
terials-Rockwelhardnesstest-Part 3. Calibrationofreferenceblocks with ASTME110-
14StandardTestMethodforRockwelandBrinel HardnessofMetalicMaterialsby
PortableHardnessTesters and other standard terms, symbols and definitions and related technical requirements, technical indicators
And test methods. This specification gives calibration conditions, calibration items and calibration of the portable Rockwell hardness meter
method.
This specification is the first release.
Specification for portable Rockwell Hardness Tester
1 Scope
This specification applies to the calibration of the Rockwell Hardness Tester for Rockwell Hardness Test according to GB/T 230.1.
2 reference file
This specification refers to the following documents.
JJG112-2013 metal Rockwell hardness tester (A, B, C, D, E, F, G, H, K, N, T scale)
JJG113 standard metal Rockwell hardness block (A, B, C, D, E, F, G, H, K, N, T scale)
JJG144 standard dynamometer
GB/T 230.1 Metallic materials - Rockwell hardness test - Part 1. Test methods (A, B, C, D,
E, F, G, H, K, N, T scale)
GB/T 230.2 Metallic materials - Rockwell hardness test - Part 2. Hardness meters (A, B, C, D, E,
F, G, H, K, N, T scale)
For dated references, only the dated edition applies to this specification; references that are not dated
, The latest version (including all modifications) applies to this specification.
3 Overview
3.1 Principles
Rockwell hardness test principle is. in the initial test force F0 and the total test force F has the role of the diamond cone
Pressure head or the diameter of the ball head pressed into the sample surface, the specified holding time, remove the main test force F1, measurement
Retain the initial test force F0 indentation residual depth h, according to the h value and the constant N and S, with formula (1) to calculate the Rockwell hard
Value.
HR = N-
(1)
Where.
HR --- Rockwell hardness value;
N - the hardness of a given scale;
h - the depth of residual indentation (residual indentation depth), mm in the initial test force after removal of the main test force;
S --- the number of units of a given scale, mm.
Commonly used Rockwell hardness formula and Rockwell scale in Table 1.
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