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GB/T 3656-2022 English PDF

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GB/T 3656-2022: Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure
Status: Valid

GB/T 3656: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 3656-2022English239 Add to Cart 3 days [Need to translate] Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure Valid GB/T 3656-2022
GB/T 3656-2008English239 Add to Cart 3 days [Need to translate] Method of coercivity measurement for magnetically soft materials by pull out procedure Obsolete GB/T 3656-2008
GB/T 3656-1983English399 Add to Cart 3 days [Need to translate] Measurement methods of magnetic properties of electrical iron Obsolete GB/T 3656-1983

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Basic data

Standard ID GB/T 3656-2022 (GB/T3656-2022)
Description (Translated English) Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H21
Classification of International Standard 77.040.99
Word Count Estimation 11,119
Date of Issue 2022-10-12
Date of Implementation 2023-02-01
Older Standard (superseded by this standard) GB/T 3656-2008
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 3656-2022: Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure


---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.
Methods of coercivity measurement of magnetic iron and magnetically soft alloy by pulling out procedure ICS 77.040.99 CCSH21 National Standards of People's Republic of China Replacing GB/T 3656-2008 Coercive force of electromagnetic pure iron and soft magnetic alloy Throwing measurement method Released on 2022-10-12 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Management Committee

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Results and Drafting Rules for Standardization Documents" drafting. This document replaces GB/T 3656-2008 "Measurement method for coercive force of soft magnetic materials by flinging". Compared with GB/T 3656-2008, except Apart from structural adjustments and editorial changes, the main technical changes are as follows. a) The term coercive force is deleted, and relevant terminology standards are directly quoted (see Chapter 3, Chapter 3 of the.2008 edition); b) Deleted the relevant description of the magnetic flux integrator (see 5.6 of the.2008 edition); c) Increased the provisions of the fluxmeter (see 5.7); d) Increase the measurement principle (see Chapter 6); e) Added the general rules for coercive force determination, added the fluxmeter method (method B) and multiple measurement fitting calculation method (method C) (see Chapter 7); f) Changed the reproducibility of measurement results of different methods (see Chapter 8, Chapter 7 of the.2008 edition); g) Increased the selection of measurement methods in the test report (see Chapter 9). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Iron and Steel Industry Association. This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This document was drafted by. Baoshan Iron and Steel Co., Ltd., Changsha Tianheng Measurement and Control Technology Co., Ltd., Hengyang Jinzeli Special Alloy Co., Ltd. Co., Ltd., Metallurgical Industry Information Standard Research Institute, Hunan Provincial Institute of Metrology and Testing. The main drafters of this document. Shen Jie, Zhou Xinhua, Wang Yujie, Hu Zhaojun, Tang Ling, Xu Yu, Liu Baoshi, Li Guanren, Ding Lin, Zhou Xing. This document was first released in 1983, revised for the first time in.2008, and this is the second revision. Coercive force of electromagnetic pure iron and soft magnetic alloy Throwing measurement method

1 Scope

This document specifies the sample, measurement device, measurement principle, measurement procedure, measurement result reproducibility and measurement test report. This document is applicable to the coercivity measurement of electromagnetic pure iron and soft magnetic alloy materials.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 2900.60 Electrotechnical Terminology Electromagnetics GB/T 9637 Electrotechnical Terminology Magnetic Materials and Components

3 Terms and Definitions

The terms and definitions defined in GB/T 2900.60 and GB/T 9637 apply to this document.

4 samples

The sample should be long and the ratio of length to width (or diameter) should not be less than 10.The recommended size of the thin plate sample is. length.200mm±0.3mm, width 20mm±0.2mm, thickness 1mm~4mm; the recommended size of rod-shaped sample is. length.200mm±0.2mm, diameter 10mm±0.2mm. Thin specimens should be straight, uniform in cross-sectional area, and should not have obvious defects such as holes, burrs and corrosion.

5 Measuring device

5.1 Solenoids The maximum magnetization field produced is not less than 2.5×104A/m, and the non-uniformity of the magnetic field is not more than 0.4% within the range of ±150mm from the center. The tube constant error is not more than 0.2%, and the aspect ratio of the solenoid is not less than 10. Note. In order to improve the test accuracy, a solenoid is tightly wound coaxially in the above solenoid to generate a small superimposed magnetization field in the same direction, and it is connected with the above solenoid Combined to achieve precise control of the demagnetization field. It should be ensured that the axis and geometric center of the sample coincide with the axis and geometric center of the solenoid, and the corresponding axis angle is less than 2°. sample, The geometric centers of the solenoid and the measuring coil deviate from each other by no more than 5mm. 5.2 DC power supply The excitation power supply should be selected according to the required maximum magnetization field, the stability should not be lower than 0.05%/min, and the adjustment fineness of the minimum range should be at least Up to 1μA DC regulated power supply, the ripple factor is not higher than 1%.

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