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GB/T 42160-2022: Grain boundary diffusion neodymium iron boron permanent magnet materials
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 42160-2022 | English | 359 |
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Grain boundary diffusion neodymium iron boron permanent magnet materials
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GB/T 42160-2022
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Basic data | Standard ID | GB/T 42160-2022 (GB/T42160-2022) | | Description (Translated English) | Grain boundary diffusion neodymium iron boron permanent magnet materials | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.150.99 | | Word Count Estimation | 18,148 | | Date of Issue | 2022-12-30 | | Date of Implementation | 2023-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42160-2022: Grain boundary diffusion neodymium iron boron permanent magnet materials---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.
ICS 77.150.99
CCSH65
National Standards of People's Republic of China
Grain Boundary Diffusion NdFeB Permanent Magnets
Posted on 2022-12-30
2023-07-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and grade 2
4.1 Classification 2
4.2 Grade 2
4.3 Designation method 2
5 Technical requirements 2
5.1 Magnetic properties 2
5.2 Temperature coefficient of magnetic properties 4
5.3 Other physical properties 4
5.4 Weightlessness 4
5.5 Surface protection 4
5.6 Magnetic dipole moment consistency 4
5.7 Irreversible loss of magnetic flux at high temperature 4
5.8 Appearance quality 4
5.9 Size and shape deviation 5
6 Test method 5
6.1 Magnetic properties 5
6.2 Temperature coefficient of magnetic properties 5
6.3 Other physical properties 5
6.4 Weightlessness 5
6.5 Surface protection 5
6.6 Consistency of Magnetic Dipole Moment 5
6.7 Irreversible loss of magnetic flux at high temperature 5
6.8 Appearance quality 5
6.9 Size 5
6.10 Numerical rounding off 6
7 Inspection rules 6
7.1 Inspection classification 6
7.2 Batch 6
7.3 Inspection item 6
7.4 Sampling method for product factory inspection 6
7.5 Inspection result judgment and repeated inspection rules 6
8 Packaging, marking, transportation, storage and accompanying documents 6
8.1 Packaging, marking, transportation and storage 6
8.2 Accompanying documents 7
Appendix A (Informative) The chemical composition, manufacturing process, and intrinsic coercive force (HcJ) of the grain boundary diffused NdFeB permanent magnet material
Changes and Applications 8
Appendix B (informative) Simplified grades of grain boundary diffused NdFeB permanent magnet materials 10
Appendix C (Informative) Temperature Coefficient of Magnetic Properties of Grain Boundary Diffused NdFeB Permanent Magnets 11
Appendix D (informative) Other physical properties of grain boundary diffused NdFeB permanent magnet materials 12
Appendix E (informative) Consistency of magnetic dipole moment, size and shape deviation of grain boundary diffused NdFeB permanent magnets 13
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
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 and managed by the National Rare Earth Standardization Technical Committee (SAC/TC229).
This document was drafted by. Ningbo Yunsheng Co., Ltd., Beijing Zhongke Sanhuan High-tech Co., Ltd., Anhui Earth Bear New Materials
Co., Ltd., Ningbo Zhaobao Magnetic Industry Co., Ltd., Beijing University of Technology, Baotou Tianhe Magnetic Technology Co., Ltd., Ningbo Permanent Magnetic Industry
Co., Ltd., Hangzhou Magnetic Technology Co., Ltd., Youyan Rare Earth New Materials Co., Ltd., Fujian Changting Jinlong Rare Earth Co., Ltd., China
Academy of Sciences Ningbo Institute of Materials Technology and Engineering, Baotou Rare Earth Research Institute, Ganzhou Fuerte Electronics Co., Ltd., China North Rare Earth (Group)
Group) High Technology Co., Ltd.
The main drafters of this document. Lu Xiangke, Shen Guodi, Zhang Min, Zhu Xiaodong, Liang Fengji, Cao Shuohao, Liu Youyou, He Qijun, Yue Ming, Dong Yi,
He Ting, Jia Shengli, Luo Yang, Zhang Jiulei, Song Zhenlun, Ding Yong, Fu Jianlong, Qi Zhiqi, Lou Shupu, Liu Feng, Ouyang Xike, Huang Xiulian, Lin Jianqiang,
Liu Weiqiang, Wu Shujie, Li Jianzhong, Yan Wenlong, Yang Lijing, Jiang Jianjun, Sun Yingli, Pang Zaisheng.
Grain Boundary Diffusion NdFeB Permanent Magnets
1 Scope
This document specifies the classification and designation, technical requirements, test methods, inspection rules, and packaging,
Signage, transport, storage and accompanying documents.
This document is applicable to sintered NdFeB permanent magnet materials treated by grain boundary diffusion process.
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 2828.1-2012 Counting sampling inspection procedure Part 1.Batch-by-batch inspection sampling retrieved by acceptance quality limit (AQL)
plan
GB/T 3217 Magnetic test methods for permanent magnet (hard magnetic) materials
GB/T 3850 Density Determination Method for Dense Sintered Metal Materials and Cemented Carbide
GB/T 4339 Determination of thermal expansion characteristic parameters of metallic materials
GB/T 5167 Determination of resistivity of sintered metal materials and cemented carbide
GB/T 7314 Compression test method for metallic materials at room temperature
GB/T 8170 Numerical rounding off rules and expression and determination of limit values
GB/T 9097 Determination of apparent hardness and microhardness of sintered metal materials (excluding cemented carbide)
GB/T 9637 Electrotechnical Terminology Magnetic Materials and Components
GB/T 13560 Sintered NdFeB permanent magnet materials
GB/T 22315-2008 Test method for elastic modulus and Poisson's ratio of metallic materials
GB/T 22588 Flash method for measuring thermal diffusivity or thermal conductivity
GB/T 24270 Measurement method for temperature coefficient of magnetic properties of permanent magnet materials
GB/T 29628 Guidelines for Measurement Methods of Permanent Magnet (Hard Magnetic) Impulse
GB/T 31967.2 Test methods for physical properties of rare earth permanent magnet materials Part 2.Determination of flexural strength and fracture toughness
GB/T 34491 Sintered NdFeB Surface Coating
GB/T 38437 Method for measuring magnetic dipole moment of ferromagnetic material samples by pulling or rotating
GB 39176 Packaging, marking, transportation and storage of rare earth products
GB/T 40792 Sintered NdFeB permanent magnet weight loss test method
GB/T 40793 Sintered NdFeB Surface Coating
GB/T 40794 Detection method for irreversible loss of high temperature magnetic flux of rare earth permanent magnet materials
NB/SH/T 0632 Determination of Specific Heat Capacity Differential Scanning Calorimetry
3 Terms and Definitions
The following terms and definitions defined in GB/T 9637 and GB/T 13560 apply to this document.
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