Baoshan Iron & Steel Co., Ltd.

Xuejun Lv

Feng Zhang

Bo Wang

Yanli Song

Kanyi Shen

Hongxu Hei

Zhenyu Zong

Shishu Xie

Aihua Ma

Xiandong Liu

Baojun Liu

Peili Zhang

Changguo Huang

Yezhong Sun

Lingyun Chen

Lan Zhang

Xiao Chen

Yanwei Wang

Disclosed are a non-oriented electrical steel sheet with excellent magnetic properties and a manufacturing method thereof, wherein the mass percentage of the chemical components thereof are: C: 0-0.005%; Si: 2.1-3.2%, Mn: 0.2-1.0%, P: 0-0.2%, Al: 0.2-1.6%, N: 0-0.005%, Ti: 0-0.005%, Cu: 0-0.2%, and the balance of Fe and inevitable impurities; and at the same time, (the S content for forming MnS+the S content for forming CuxS)/the S content in the steel is required to be less than or equal toThe process for manufacturing the non-oriented electrical steel sheet of the present invention is simple and convenient, the chemical components of the steel are easy to control, the manufacturing process is stable, and the technical requirements are easy to realize.

Non-oriented electrical steel sheet with excellent magnetic properties and manufacturing method thereof

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

Disclosed is a non-oriented electrical steel plate having a good surface state, a high magnetic induction and a low iron loss, the contents of various chemical elements of the non-oriented electrical steel plate in mass percentage being: 0&#x3c;C&#x2264;0.004%, 0.1%&#x2264;Si&#x2264;1.6%, 0.1%&#x2264;Mn&#x2264;0.8%, 0.1%&#x2264;Al&#x2264;0.6%, Ti&#x2264;0.0015%, and the balance being Fe and other inevitable impurities, with 0.2%&#x2264;(Si+Al)&#x2264;2.0% being met. Also disclosed is a method for manufacturing the above-mentioned steel plate, comprising the steps: a liquid iron pretreatment, smelting with a converter, RH refining, casting into slabs, hot rolling, acid pickling, cold rolling, annealing and coating. The non-oriented electrical steel plate of the present invention has an excellent magnetic property, an ultralow iron loss and a higher steel purity; in addition the surface quality of the steel plate is good and the production cost is low.

High magnetic induction and low iron loss non-oriented electrical steel sheet with good surface state and manufacturing method therefor

Growing community of inventors

Shanghai, China

Xuejun Lv