通过高冷却速率平面流铸法降低铁硅硼非晶合金薄带的磁芯损耗

Reducing the Core Losses of Fe-Si-B Amorphous Alloy Ribbons by High Cooling Rate Planar Flow Casting.

作者信息

Li Deren, Wang Wenjun, Liu Tiancheng, Li Lijun, Lu Zhichao

机构信息

School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China.

CITIC Metal Co., Ltd., Beijing 100004, China.

出版信息

Materials (Basel). 2022 Jan 25;15(3):894. doi: 10.3390/ma15030894.

DOI:10.3390/ma15030894

PMID:35160840

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8838048/

Abstract

In the planar flow casting (PFC) process, the cooling rate significantly affects the structure and properties of a cast ribbon. The influence of the thermal conductivity of the cooling wheel substrate on cooling rate was simulated by a numerical method, and it is shown that a higher thermal conductivity of the cooling wheel substrate leads to a higher cooling rate in the PFC process. Two copper-beryllium (Cu-2Be) rings with thermal conductivities of 175.3 W/m·K and 206.5 W/m·K were manufactured and installed onto a wheel core as the substrate of the cooling wheel. The effects of cooling rate on the soft magnetic properties of Fe-Si-B amorphous ribbons were investigated by pragmatic ribbon casting. The results show that the increment in the thermal conductivity of the cooling wheel substrate from 175.3 W/m·K to 206.5 W/m·K lowered the coercive force of amorphous ribbon from 2.48 A/m to 1.92 A/m and reduced the core losses at 1.4 T and 50 Hz by up to 22.1%.

摘要

在平面流铸（PFC）工艺中，冷却速率显著影响铸带的组织和性能。采用数值方法模拟了冷却轮基体热导率对冷却速率的影响，结果表明，在PFC工艺中，冷却轮基体的热导率越高，冷却速率越高。制备了热导率分别为175.3 W/m·K和206.5 W/m·K的两个铍青铜（Cu-2Be）环，并将其安装在轮芯上作为冷却轮的基体。通过实际铸带研究了冷却速率对Fe-Si-B非晶带材软磁性能的影响。结果表明，冷却轮基体的热导率从175.3 W/m·K提高到206.5 W/m·K，非晶带材的矫顽力从2.48 A/m降低到1.92 A/m，在1.4 T和50 Hz下的铁损降低了22.1%。