Patent technology analysis of cold rolled oriented silicon  steel coating applied in China

Abstract

Abstract: The patent quantity of cold rolled oriented silicon steel coating and distribution of technology fields applied in China from 1999 to 2019 were summarized. The analysis results indicated that，there are 121 patents of coldrolled oriented silicon steel coating applied in China, 96 patents applied by native producers and 25 patents applied by abroad producers．The typical patent technology include improving forsterrite quality, no forming forsterrite, containing chromate insulating coating and chromiumfree and environment friendly coating and so on，The developing trend of silicon steel coating is mainly chromiumfree and environment friendly insulating coating．

Key words: oriented silicon steel, coating, patent technology

HU Zhiqiang, ZHANG Wenkang. Patent technology analysis of cold rolled oriented silicon steel coating applied in China[J]. Electrical Steel, 2020, 2(3): 48-52.

[1]	YANG Ping, LIU Liying, MA Dandan, ZHANG Haili, JIA Zhiwei, DONG Chenxin. Examination and analysis of the point bare crystals in grain oriented silicon steels [J]. Electrical Steel, 2020, 2(3): 1-8.
[2]	CHEN Zhenwen, XIE Kai , YIN Zhenzhi, LIU Peng. Steelmaking production practice of high grade non oriented silicon steel 50W350 [J]. Electrical Steel, 2020, 2(3): 14-17.
[3]	LIU Wenpeng, GAO Zhenyu, GUO Qi, XIN Yahui, CHEN Chunmei, LI Yadong. Effects of normalizing temperatures on precipitates of high grade non oriented silicon steel [J]. Electrical Steel, 2020, 2(3): 18-24.
[4]	LU Tianlin, SHI Lifa, PEI Yinghao, DU Jun, XU Wenxiang. Influence of normalizing treatment on the microstructure and properties of 1.1 % Si nonoriented electrical steel [J]. Electrical Steel, 2020, 2(3): 25-28.
[5]	HAO Yunwei, WANG Bo. Research on the temperature effect of intermediate frequency thin gauge non oriented silicon steel [J]. Electrical Steel, 2020, 2(2): 8-10.
[6]	WANG Ruyu . Effect of hot rolling heating temperature on microstructure and precipitates of 3.0 % Si non oriented silicon steel [J]. Electrical Steel, 2020, 2(2): 11-16.
[7]	HE Zhijian, SHI Lifa, PEI Yinghao, CHENG Guoqing, ZHAN Yungao, LIU Qingsong. Effect of the cold rolling thickness on microstructure and magnetic properties of 3.0 % Si non oriented silicon steel [J]. Electrical Steel, 2020, 2(2): 16-20.
[8]	TONG Haibin, LI Gang, ZHANG Quan, WANG Long, ZHANG Peiyi, LUO Wenjun, ZHU Dengwu. Welding technology optimization of high grade non oriented silicon steel in acid continuous rolling units [J]. Electrical Steel, 2020, 2(2): 26-30.
[9]	LI Yiwei, LI Dejun, QIAO Haohao. Analysis of the factors influencing the electromagnetic properties of high punching 50BW600 nonoriented silicon steel [J]. Electrical Steel, 2020, 2(2): 31-34.
[10]	XU Yanbo. Equipment characteristics of annealing coating unit for silicon steel used in new energy vehicles in WISDRI (Xinyu) Cold Rolling New Material Technology Co. Ltd. [J]. Electrical Steel, 2020, 2(2): 50-52.
[11]	CHENG Ling, MA Guang, HU Zhuochao, GONG Weiguo,  YANG Fuyao, MENG Li, DONG Han, CHEN Xin. Analysis of performance simulation of iron core and electromagnetic characteristics of 0.18 mm grainoriented silicon steel with ultralow loss#br# [J]. Electrical Steel, 2020, 2(1): 15-21.
[12]	ZHOU Yujun, HU Shoutian, SHEN Xinyi, ZHOU Qianhua, DANG Ningyuan. Simulation analysis of coil temperature uniformity in inner cover of high temperature annealing furnace for oriented silicon steel#br# [J]. Electrical Steel, 2020, 2(1): 22-26.
[13]	RAO Xingning, ZHANG Zhengkang. Replacing oriented silicon steel with highgrade nonoriented silicon steel to make phaseshifting transformer core#br# [J]. Electrical Steel, 2020, 2(1): 32-34.
[14]	PANG Shufang, LI Yuanhua, GAO Zhenyu, CHEN Chunmei, LI Yadong, LIU Wenpeng . Thermodynamic calculation and theoretical analysis of equilibrium precipitated phases in highgrade nonoriented silicon Steel#br# [J]. Electrical Steel, 2020, 2(1): 35-40.
[15]	TUBI Munai, SHI Guofa, XIAO Haihang. Research on testing of magnetic properties of the silicon steel with C6 thick coatings#br# [J]. Electrical Steel, 2020, 2(1): 45-47.

Patent technology analysis of cold rolled oriented silicon steel coating applied in China

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