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JJF 1458-2014 English PDF

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JJF 1458-2014: Calibration Specification for Magnetic Yoke Detectors
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1458-2014	English	459	Add to Cart	4 days [Need to translate]	Calibration Specification for Magnetic Yoke Detectors	Valid	JJF 1458-2014

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Basic data

Standard ID	JJF 1458-2014 (JJF1458-2014)
Description (Translated English)	Calibration Specification for Magnetic Yoke Detectors
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A55
Classification of International Standard	17.220
Word Count Estimation	20,258
Date of Issue	4/21/2014
Date of Implementation	7/21/2014
Quoted Standard	JJF 1273-2011; GB/T 5097-2005; GB/T 15822.3-2005; JB/T 4730.4-2005; JB/T 6065-2004
Regulation (derived from)	The State Administration of Quality Supervision, Inspection and Quarantine Notice No. 47 of 2014
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This Standard specifies the electromagnetic clutch type magnetic detection machines, cross-calibration yoke (rotating magnetic field) testing machine. NA calibration AC, DC (half-wave rectification or full-wave rectification) magnetic particle inspection

JJF 1458-2014: Calibration Specification for Magnetic Yoke Detectors

---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 Magnetic Yoke Detectors People's Republic of China National Metrology Technical Specifications Yoke type magnetic particle testing machine calibration specification Issued on. 2014-04-21 2014-07-21 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Yoke type magnetic particle testing machine calibration specification forMag Focal point. the National Technical Committee on Electromagnetic measurement Main drafting unit. Xinjiang Institute of Measurement and Testing China Testing Technology Research Institute Participated in the drafting unit. Jiangsu Province Institute of Metrology This specification commissioned the National Technical Committee Electromagnetic responsible for the interpretation of measurement The main drafters of this specification. Feng Xuefeng (Xinjiang Institute of Measurement and Testing) Full Song (Xinjiang Institute of Measurement and Testing) Shen Jian (China Testing Technology Research Institute) Xiaoyu Qin (Xinjiang Institute of Measurement and Testing) Drafters participate. Fan Yi (Jiangsu Province Institute of Metrology)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 magnetizing current (1) 3.2 yoke (1) 3.3 Cross yoke (1) Lifting force 3.4 (1) 4 Overview (1) 5 Metrological characteristics (2) 5.1 magnetizing current (2) 5.2 Safety Performance (2) Integrated Sensitivity 5.3 (2) Lifting force 5.4 (3) 6 calibration conditions (3) Environmental conditions 6.1 (3) 6.2 standards and other measuring equipment (3) 7 calibration items and calibration methods (4) 7.1 calibration items (4) 7.2 Calibration method (4) 8 calibration results expression (5) 9 Recalibration interval (6) Appendix A Measurement Uncertainty Example (7) Appendix B Calibration original record format (10) Appendix C calibration certificate page format (11) Appendix D standard test piece of type, size, and graphics (13) Appendix E magnetic carrier and magnetic suspension (14)

Introduction

This specification based on the national measurement specifications JJF 1071-2010 "National Calibration Specifications writing rules" JJF 1059.1-2012 "Evaluation and Expression of Uncertainty in Measurement", JJF 1001-2011 "universal metering and fixed term Meaning "prepared to develop. This specification is the first release. Yoke type magnetic particle testing machine calibration specification

1 Scope

This standard applies to magnetic yoke-type magnetic detection machines, cross yoke (rotating magnetic field) testing machine calibration. Not applicable AC, DC (half-wave rectification or full-wave rectification) magnetic particle testing machine calibration. 2. References This specification refers to the following documents. JJF 1273-2011 magnetic particle inspection machine calibration specification GB/T 5097-2005 destructive testing - Penetrant testing and magnetic particle testing - Viewing conditions GB/T 15822.3-2005 destructive testing equipment Magnetic particle testing - Part 3 JB/T 4730.4-2005 Nondestructive Testing pressure equipment Part 4 Magnetic particle testing JB/T 6065-2004 Nondestructive Testing magnetic detection test piece 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 terminology and units of measurement

This specification uses quantities and units specified in GB 3102.5. 3.1 magnetizing current magnetizingcurrent Rms ac current yoke type magnetic flaw detector is working properly. DC magnetic yoke-type magnetic detection machines to work The current average. Unit. ampere (A). 3.2 yoke magneticyoke Part of the magnetic circuit, its main function is to provide a low reluctance magnetic flux path. Note. The yoke widely used relatively high permeability soft iron, A3 steel, and soft magnetic alloys to produce, in some special occasions, but also the yoke Useful ferrite material manufactured. 3.3 Cross yoke crossedyoke On the same plane (or surface), having a certain phase difference (not equal to 0 ° or 180 °) and cross-cutting Angle (not equal to 0 ° or 180 °) of the two-phase sinusoidal alternating magnetic field superimposed on each other, and in the plane (or surface) On the rotating magnetic field of the magnetic detection devices. 3.4 Lifting force liftingforce When the solenoid yoke pole at maximum distance, the magnetic flux density which produces a peak magnetic field of ferromagnetic workpieces Testing appeal. NOTE. For engineering practice, with respect to the exchange of electromagnetic yoke, lifting force equal to its average suction yoke poles. Newtons (N).

4 Overview

Magnetic particle inspection is to detect ferromagnetic material surface and near-surface defect detecting method used. When the workpiece is

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