A multi-parameter model of heat treatment process for soft magnetic materials on performance of HSERs
A multi-parameter model of heat treatment process for soft magnetic materials on performance of HSERs作者机构：Department of Electrical EngineeringHarbin Institute of TechnologyHarbin 150000China G&A Electronics Co.LtdGuilin 541000China
出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)
年 卷 期：2022年第35卷第9期
页 面：379-388页
核心收录：
学科分类：08[工学] 0825[工学-航空宇航科学与技术]
基 金：supported by the National Natural Science Foundation of China(No.52177134)
主 题：Dynamic performance Heat treatment Hermetically-Sealed Electromagnetic Relay(HSER) Metallographic analysis Soft magnetic materials
摘 要：Abstract:Material properties play an important role in the performance of electromagnetic mechanism. For an aeronautic Hermetically-Sealed Electromagnetic Relay(HSER), more than 50%parts are made of soft magnetic materials. Therefore, the performance of soft magnetic materials directly determines the static and dynamic characteristics of the HSER. Based on the theory of crystal recrystallization, this paper analyzes cold extrusion and heat treatment in the processing of soft magnetic materials, simulates the grain change process of an armature at different heat treatment temperatures, establishes a correlation model of temperature, grain size, and magnetic energy,and verifies results by scanning electron microscopy. Results of heat treatment temperatures from 800 ℃to 920 ℃are obtained and compared. A sample soft magnetic material after heat treatment at different temperatures has the largest difference in the initial magnetization range, up to 22%. In order to verify the fluctuation of the overall output characteristics of an HSER caused by the difference between soft magnetic materials, a static and dynamic analysis model of a typical HSER is established, and the accuracy of the model is verified by a set of actual test system. The difference of dynamic characteristics under different heat treatment temperatures is nearly 3%.
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