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GB/T 42668-2023: Samarium-iron-nitrogen permanent magnetic powder for bonded magnet
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 42668-2023 | English | 189 |
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Samarium-iron-nitrogen permanent magnetic powder for bonded magnet
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GB/T 42668-2023
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Basic data | Standard ID | GB/T 42668-2023 (GB/T42668-2023) | | Description (Translated English) | Samarium-iron-nitrogen permanent magnetic powder for bonded magnet | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 10,139 | | Date of Issue | 2023-08-06 | | Date of Implementation | 2024-03-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42668-2023: Samarium-iron-nitrogen permanent magnetic powder for bonded magnet---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 77.120.99
CCSH65
National Standards of People's Republic of China
Samarium iron nitrogen bonded permanent magnet powder
Published on 2023-08-06
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is under the jurisdiction of the National Rare Earth Standardization Technical Committee (SAC/TC229).
This document was drafted by. Youyan Rare Earth New Materials Co., Ltd., Ningbo Yunsheng Bonded Magnet Co., Ltd., Hangzhou Qianshi Technology Co., Ltd.
Company, Anhui Dadixiong New Materials Co., Ltd., Beijing Zhongke Sanhuan High-Tech Co., Ltd., Beijing University of Technology, Youyan Rare Earth
(Rongcheng) Co., Ltd., Baotou Rare Earth Research Institute, Youyan Rare Earth High Technology Co., Ltd., Qiandong Rare Earth Group Co., Ltd., Baotou Rare Earth New
Materials Technology R&D Center, Jiangxi Zhongshi New Materials Co., Ltd., Baotou Tianhe Magnetic Materials Technology Co., Ltd., Beikang Magnetic Materials Technology Co., Ltd.
Ltd.
The main drafters of this document. Luo Yang, Yan Wenlong, Wang Zilong, Peng Haijun, Lin Xiao, Yu Dunbo, Quan Ningtao, Zhang Weishan, Chen Haibo, Yang Yuanfei,
Yi Xiaofei, Cao Shuohao, Yue Ming, Yao Nanhong, Ma Yuehua, Fu Jianlong, Shan Weikang, Wu Shujie, Zhu Xiaoting, Bai Xinyuan, Li Tianhao, Wang Zhongkai,
Zhu Shengjie, Cai Wei, Jin Zhenjun, Shen Guodi, Diao Shulin, Zhao Ningning, Xu Huibing, Duan Jiping, Jin Guoshun, Che Shenglei, Mou Di, Liu Rongming, Wang Ke.
Samarium iron nitrogen bonded permanent magnet powder
1 Scope
This document specifies the classification and brand, technical requirements, test methods, inspection rules, packaging, marking, transportation,
Storage and accompanying documents.
This document applies to isotropic and anisotropic samarium iron nitrogen bonded permanent magnetic powder (hereinafter referred to as "permanent magnetic powder"), which can be used for molding,
Molding processes such as injection molding, extrusion and calendering are used to manufacture bonded magnets.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 1479.1 Determination of bulk density of metal powders Part 1.Funnel method
GB/T 9637 Electrical Terminology Magnetic Materials and Components
GB/T 15676 Rare earth terminology
GB/T 19077 Particle size distribution laser diffraction method
GB/T 20168-2017 Rapidly quenched NdFeB permanent magnet powder
GB/T 24270 Measurement method of temperature coefficient of magnetic properties of permanent magnet materials
GB 39176 Packaging, marking, transportation and storage of rare earth products
GB/T 40794 Detection method for irreversible loss of high temperature magnetic flux of rare earth permanent magnet materials
GB/T 41967-2022 Anisotropic NdFeB permanent magnet powder
3 Terms and definitions
The following terms and definitions as defined in GB/T 9637 and GB/T 15676 apply to this document.
3.1
SmFeN permanent magnetic powder with the same magnetic properties after magnetization in any direction.
3.2
After magnetization in a certain direction, its magnetic performance is much higher than that of samarium iron nitrogen permanent magnet powder after magnetization in other directions.
4 Classification and brand
4.1 Classification
Permanent magnetic powder can be divided into two categories. isotropic and anisotropic.
4.2 Brand
Each type of product is divided into several grades according to the maximum magnetic energy product and coercive force. The specific grades are shown in Table 1.
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