GB/T 44655-2024Amorphous soft magnetic alloy powder (English PDF)

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 is required. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Technical Committee for Standardization of Electrical Alloys (SAC/TC 228). This document was drafted by: Ningbo Magnetic Materials Application Technology Innovation Center Co., Ltd., Antai (Bazhou) Special Powder Co., Ltd., Foshan Zhongyan Magnetics Technology Co., Ltd., Ningbo Zhongke Biplus New Materials Technology Co., Ltd., State Grid Hebei Electric Power Co., Ltd. Cangzhou Power Supply Electric Branch, Hunan Lianzhong Magnetic Instrument Co., Ltd., Hebei University of Technology, Jiangxi Aite Magnetic Materials Co., Ltd., Guilin Electrical Science Research Institute Co., Ltd., Baotou Rare Earth Research Institute, State Grid Smart Grid Research Institute Co., Ltd., Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Institute, Qingdao Yunlu Advanced Materials Technology Co., Ltd., Hangzhou Quadrant Technology Co., Ltd., China University of Metrology, Jiangxi Dayou Technology Co., Ltd. Company, Ningbo Zhongchao New Materials Co., Ltd., Guangdong Guirong Permanent Magnetic New Materials Technology Co., Ltd., Shenzhen Maxjet Microelectronics Technology Co., Ltd. Company, Heye Health Technology Co., Ltd., Inner Mongolia University of Technology, Zhejiang University of Technology, Zhejiang Tiantong Electronic Information Materials Research Institute Co., Ltd. China Southern Power Grid Co., Ltd. Ultra-high Voltage Transmission Company, Zhejiang Daishengsi Medical Technology Co., Ltd., Guangdong Fanrui New Materials Co., Ltd. Company, Jiangxi Yuean New Materials Co., Ltd., Tianjin Sanhuan Aona Technology Co., Ltd., Guangzhou Delong Electronic Devices Co., Ltd., Anhui Zhici New Materials Technology Co., Ltd., Foshan Mingfuxing Metal Materials Co., Ltd., Guilin University of Electronic Technology, Guangzhou Jinci Hainaxin Materials Technology Co., Ltd., Langfeng New Materials Qidong Co., Ltd., Chongqing Youtai Industrial Co., Ltd., Jiangsu Bimudi New Materials Technology Co., Ltd. Co., Ltd., Hunan Aerospace Magnetics Technology Co., Ltd., Wuxi Lanpei New Materials Technology Co., Ltd., Chongqing Wangbian Electric (Group) Co., Ltd. company. The main drafters of this document are. Man Qikui, Meng Lingbing, Wang Ce, Huo Lishan, Song Wenle, Hu Te, Wang Jingqin, Zhang Miantuan, Cui Defeng, Lu Fei, Han Yu, Dong Yaqiang, Guo Xuan, Ni Chengliang, Hu Xiukun, Mao Yuchen, Wang Shuguang, Tang Yu, Hu Geng, Fang Yanwen, Liu Jingshun, Che Shenglei, Zong Wei, Yang Zheng, Situ Duo, Yan Chuanjun, Li Bo, An Hailu, Wang Min, Deng Bili, Cai Mingxing, Tang Chengying, Wang Yongfei, Jiang Mufeng, Hu Guanghua, Qi Ping, Deng Xingmin, Chen Pengpeng, Fan Gangqiang, Chi Qiang, Ding Yi, Yang Fuyao, Liu Yang, Zhang Mohan, Lu Ming, Zhao Haorong, Huang Songqiang, Hu Shoutian. Amorphous soft magnetic alloy powder

1 Scope

GB/T 44655-2024 specifies amorphous soft magnetic alloy powder. An amorphous alloy has no crystal structure, having been frozen from the melt too fast to order itself, and the absence of grain boundaries and magnetocrystalline anisotropy is what makes it magnetically soft: it magnetises and demagnetises with very little loss. In powder form, pressed into cores, that translates into inductors and transformers that run cooler at the high switching frequencies modern power electronics use - which is why demand has followed the growth of electric vehicle chargers, solar inverters and switched-mode supplies. The properties depend entirely on the quenching being fast enough and staying that way: heat the powder too much during processing and it crystallises, losing the property it was bought for. This document defines the terms and definitions for amorphous soft magnetic alloy powders made by rapid quenching atomisation and specifies the grade designation system, the technical requirements, the inspection rules, and the packaging and related provisions. Under ICS 29.030 and CCS K14, it is written for powder producers, magnetic component manufacturers and the power electronics industry that buys the result.

This document defines the terms and definitions of amorphous soft magnetic alloy powders produced by rapid quenching atomization process, and specifies the The brand naming method, technical requirements, inspection rules, packaging, marking, transportation and storage of amorphous soft magnetic alloy powders are described. method. This document applies to amorphous soft magnetic alloy powders for magnetic components in the fields of power, electronics and communications equipment.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document.

GB/T 1479.1-2011 Determination of bulk density of metal powders Part

3 Terms and definitions

GB/T 2900.1, GB/T 2900.60, GB/T 3500, GB/T 9637, GB/T 15019, GB/T 16418, The terms and definitions defined in GB/T 21219 and the following apply to this document.

3.1 Amorphous powder material with soft magnetic properties prepared by rapid solidification of high-temperature liquid alloy.

3.2 Direct current bias performance The percentage of the effective permeability when a DC bias magnetic field is applied to the effective permeability when there is no DC bias magnetic field.