Baoshan Iron & Steel Co., Ltd.

Lingyun Chen

Xiao Ling Chen

Jie Huang

Feng Zhang

Bo Wang

Yanli Song

Shishu Xie

Yongjie Yang

Zipeng Zhao

Yaming Ji

Xuejun Lv

Zhenyu Zong

Yunpeng Xu

Dengfeng Li

Xiao Chen

A non-oriented electrical steel having excellent magnetic properties, the chemical elements thereof in percentage by mass being: Si: 0.2-1.5%, Mn: 0.01-0.30%, Al: 0.001-0.009%, O: 0.005-0.02%, C&#x2264;0.005%, S&#x2264;0.005%, N&#x2264;0.005%, and Ti&#x2264;0.002%, the remainder being Fe and other unavoidable impurities, and Al/Si&#x2264;0.006 and Mn/Si&#x2264;0.2. The method for producing comprises the following sequence of steps: (1) smelting; (2) hot rolling: the slab heating temperature being 850&#xb0; C. to 1250&#xb0; C., and the final rolling temperature being 800-1050&#xb0; C.; (3) acid pickling; (4) cold rolling; (5) annealing: the annealing plate temperature being controlled between 620&#xb0; C.-900&#xb0; C.; and (6) coating.

Non-oriented electrical steel having excellent magnetic properties

The present invention refers to a chromium-free insulation coating material for non-oriented silicon steel, comprising, in parts by weight, the following components: metal dihydrogen phosphate salt of 100 parts, epoxy resin of 10&#x2dc;60 parts, naphthenate drier or isooctanoate metal salt drier of 0.001&#x2dc;10 parts, organic solvent of 0.001&#x2dc;100 parts and pure water of 60&#x2dc;2000 parts. The metal dihydrogen phosphate salt is Al(HPO), Mg(HPO), Ca(HPO)or Zn(HPO); the epoxy resin is water-soluble epoxy resin or epoxy resin emulsion. Chromium-free insulation coating material of the present invention, after being coated on non-oriented silicon steel, renders highly transparent appearance, and has excellent insulativity, corrosion resistance, adhesiveness, weldability and manufacturability, so as to eliminate defects of the existing chromium-free coating, such as sticky and un-wear-resistant and to meet environment protection requirements.

Chromium-free insulation coating material for non-oriented silicon steel

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Shanghai, China

Lingyun Chen