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JJF 1436-2013: Calibration Specification of Ultrasonic Hardness Testers
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Calibration Specification of Ultrasonic Hardness Testers
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JJF 1436-2013
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Basic data | Standard ID | JJF 1436-2013 (JJF1436-2013) | | Description (Translated English) | Calibration Specification of Ultrasonic Hardness Testers | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A53 | | Classification of International Standard | 17.100 | | Word Count Estimation | 16,180 | | Older Standard (superseded by this standard) | JJG 654-1990 | | Quoted Standard | JJG 144-2007; JJG 148-2006; GB/T 12604.1-2005; JB/T 9377-2010; ASTM A1038-2005; DIN 50159-2 | | Adopted Standard | ASTM A1038-2005, NEQ; DIN 50159-2, NEQ | | Regulation (derived from) | AQSIQ Notice No. 154 of 2013 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to: ultrasonic hardness tester (hereinafter referred to as hardness) calibration. | JJF 1436-2013: Calibration Specification of Ultrasonic 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 of Ultrasonic Hardness Testers
People's Republic of China National Metrology Technical Specifications
Ultrasound hardness tester calibration specification
Issued on. 2013-10-25
2014-04-25 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Ultrasound hardness tester calibration specification
Instead of JJG654-1990
Focal point. the National Technical Committee on Metering hardness force value
The main drafting units. China Institute of Metrology
Guangdong Provincial Institute of Metrology
Hubei Provincial Institute of Measurement and Testing
Participated in the drafting unit. Quanzhou Fortress hardness of the East China Sea block plant equipment
Dongguan City in Mong Precision Instrument Co., Ltd.
Nanchang condition hardness block Manufacturing Co., Ltd.
Beijing Blue platinum-tech detection equipment Ltd.
This specification entrust national force value hardness measurement technical committee responsible for the interpretation
The main drafters of this specification.
Ye Ming (China Institute of Metrology)
He Guanglin (Guangdong Institute of Metrology)
Hu Xiang (Hubei Institute of Measurement and Testing)
Drafters participate.
Chen Jun salary (Quanzhou Fortress hardness of the East China Sea block plant equipment)
Zheng Chunping (Dongguan City in Mong Precision Instrument Co., Ltd.)
Kuang Wei (Nanchang condition hardness block Manufacturing Co., Ltd.)
Zhang Bin (Beijing Blue platinum-tech detection equipment Co., Ltd.)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2. References (1)
3 Overview (1)
4 Metrological characteristics (2)
4.1 hardness resolution (2)
4.2 hardness test force (2)
4.3 hardness indication error and repeatability (2)
Drift 4.4 shows hardness values (2)
Calibration Condition 5 (2)
6 Calibration methods and calibration items (2)
6.1 calibration test force (2)
Calibration 6.2 shows the hardness value (3)
Expression 7 calibration results (4)
8 Recalibration interval (5)
Appendix A Brinell, Rockwell hardness calibration indicated value (6)
Appendix B ultrasonic hardness meter calibration records in the page format (7)
Appendix C hardness meter calibration certificate ultrasound-page format (8)
Appendix D ultrasound hardness measurement uncertainty analysis and examples (9)
Introduction
This specification according to the rules JJF 1071-2010 "National Calibration Specifications writing rules" provisions of the preparation.
This specification in the development process to fully consider the JJG654-1990 "ultrasonic hardness", JB/T 9377-2010
"Ultrasound hardness tester technical conditions", ASTMA1038-2005 ultrasonic contact impedance method Portable Hardness
Standard Test Method for Testing (Standardtestmethodforportablehardnesstestingbytheultra-
soniccontactimpedancemethod), DIN50159-2 "hardness testing of metallic materials - Part 2. Hard
Degree detector test and calibration "(Metalicmaterials-HardnesstestingwiththeUCImethod-
Part 2. Verificationandcalibrationofthetestingdevices) ultrasonic hardness of terminology,
Symbols and definitions, as well as the relevant technical requirements, technical specifications and test methods. This specification gives the ultrasonic hardness meter
The amount of the specific characteristics of the calibration conditions, calibration items and calibration methods.
This specification instead of JJG654-1990. Compared with JJG654-1990, in addition to editorial changes, the master of this specification
To technical changes are as follows.
--- UCI introduced the concept;
--- Test Force showed an increase, hardness indication error and repeatability;
--- Remove the frequency of checks;
--- Remove the parameters and test items related to the indenter;
--- Increased repeatability test force calibration items;
--- An increase in the measurement of test force shall be measured using a pressure head carriage;
--- Increased before calibration, calibration parameters should first specimen input ultrasonic hardness only after calibration;
--- Of standard hardness block size used in the calibration made a new proposal;
--- Increased uncertainty analysis;
--- Page format adds the certificate and certificate format;
--- Increasing the calibration of other hardness values.
Ultrasound hardness tester calibration specification
1 Scope
This instruction applies to ultrasound hardness (hereinafter referred to as hardness) calibration.
2. References
This specification refers to the following documents.
JJG144-2007 standard dynamometer
JJG148-2006 standard Vickers hardness block
GB/T 12604.1-2005 Terminology for nondestructive testing ultrasonic testing (ISO 5577.2000)
JB/T 9377-2010 Ultrasonic hardness tester technical conditions
Standard Test Method for ASTMA1038-2005 ultrasonic contact impedance method using a portable hardness testing
(Standardtestmethodforportablehardnesstestingbytheultrasoniccontactimpedance
method)
DIN50159-2 ultrasonic UCI hardness testing of metallic materials - Part 2. Detection and hardness tester
Calibration (Metalicmaterials-HardnesstestingwiththeUCImethod-Part 2. Verification
andcalibrationofthetestingdevices)
For dated references, only the dated edition applies to this specification; undated reference documents
Member, the latest edition (including any amendments) applies to this specification.
3 Overview
Ultrasound hardness tester is the use of UCI method (Ultrasonic Contact Impedance) measuring instruments. The basic principle is to weld
Vibration rod diamond pyramid indenter, incentives to its free-running frequency when the indenter constant load and the object hanging
When the resonance direct contact and using the resonant frequency calculate the hardness value of the measured object. Ie frequency variation value by
Piezoelectric ceramic into a voltage signal, according to the elastic modulus of the material is calculated hardness values of the measured object, and its conversion
He hardness.
Hardness according to equation (1).
A = f (Eeff, Δf)
HV = 0.102 × sinα2 ×
(1)
Where.
A --- indentation area;
Eeff --- modulus of elasticity;
--- Frequency change [Delta] f;
f --- function symbols;
HV --- Vickers hardness;
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