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1. (WO2018059006) SILICON STEEL PRODUCT WITH LOW IRON LOSS FOR LOW-NOISE TRANSFORMER, AND MANUFACTURING METHOD THEREOF

Pub. No.:    WO/2018/059006    International Application No.:    PCT/CN2017/088090
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Wed Jun 14 01:59:59 CEST 2017
IPC: C22C 38/02
Applicants: BAOSHAN IRON & STEEL CO., LTD.
宝山钢铁股份有限公司
Inventors: ZHAO, Zipeng
赵自鹏
HOU, Changjun
侯长俊
XIANG, Banglin
向邦林
SHEN, Kanyi
沈侃毅
LI, Guobao
李国保
LING, Chen
凌晨
XIE, Weiyong
谢伟勇
SONG, Yanli
宋艳丽
Title: SILICON STEEL PRODUCT WITH LOW IRON LOSS FOR LOW-NOISE TRANSFORMER, AND MANUFACTURING METHOD THEREOF
Abstract:
A silicon steel product with low iron loss for a low-noise transformer, and manufacturing method thereof. The silicon steel product comprises: a silicon steel substrate, a magnesium silicate bottom layer formed on a surface of the silicon steel substrate, and an insulation coating applied on the magnesium silicate bottom layer. The magnesium silicate bottom layer has a normal reflection (R) of 40-60% for visible light. The silicon steel product with low iron loss for a low-noise transformer achieves normal reflection of visible light by stringent control of the magnesium silicate bottom layer of the silicon steel substrate. The magnesium silicate bottom layer has a uniform gloss to reduce iron loss and minimize magnetically driven expansion and contraction, resulting in low noise and making the silicon steel product especially suitable for a transformer.