PREPARATION METHOD FOR ORIENTED HIGH-SILICON STEEL

Title:

PREPARATION METHOD FOR ORIENTED HIGH-SILICON STEEL

Document Type and Number:

WIPO Patent Application WO/2016/045157

Kind Code:

A1

Abstract:

A preparation method for oriented high-silicon steel, performed according to the following steps: (1) smelting molten steel according to configured components, the components comprising in weight percentages C 0.001 - 0.003%, Si 5.0 - 6.6%, Mn 0.2 - 0.3%, Al 0.05 - 0.12%, V 0.01 - 0.04%, Nb 0.03 - 0.06%, S 0.02 - 0.03%, N 0.009 - 0.020%, O ≤ 0.0020%, and the rest being Fe and unavoidable impurities; (2) performing thin-strip continuous casting to form cast strips; (3) performing hot rolling within an inert atmosphere; (4) cooling till 550 - 600℃, winding, and performing low-temperature hot rolling/warm rolling in a nitrogen gas atmosphere; (5) acid washing to remove oxide scale, and performing multiple cold rollings; (6) re-crystallizing and annealing, coating with MgO, and finally winding; (7) performing purifying and annealing under hydrogen gas circulation; (8) removing oxide scale, coating an insulation layer, flattening, drawing, and annealing, and air cooling and winding.

Inventors:

WANG GUODONG (CN)
ZHANG YUANXIANG (CN)
WANG YANG (CN)
LU XIANG (CN)
FANG FENG (CN)
CAO GUANGMING (CN)
LI CHENGGANG (CN)
XU YUNBO (CN)
LIU ZHENYU (CN)

Application Number:

PCT/CN2014/088887

Publication Date:

March 31, 2016

Filing Date:

October 20, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

UNIV NORTHEASTERN (CN)

International Classes:

C22C38/12; C21D8/12

Foreign References:

CN102041368A	2011-05-04
JPS6369917A	1988-03-30
JPH04224625A	1992-08-13
US5415703A	1995-05-16
JPH0459929A	1992-02-26
JPH05295447A	1993-11-09

Other References: