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1. CN102264922 - Non-oriented electrical steel sheets having high workability for client companies and manufacturing method thereof

Office China
Application Number 200980152838.X
Application Date 15.12.2009
Publication Number 102264922
Publication Date 30.11.2011
Grant Number 102264922
Grant Date 13.11.2013
Publication Kind B
IPC
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
12
during manufacturing of articles with special electromagnetic properties
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C21D 8/12
C22C 38/00
CPC
C22C 38/02
C21D 1/30
C21D 8/12
C21D 8/1244
C21D 9/46
C22C 38/04
Applicants POSCO公司
Inventors 金载勋
金龙洙
金在宽
奉元奭
Agents 北京北翔知识产权代理有限公司 11285
北京北翔知识产权代理有限公司 11285
Priority Data 10-2008-0134595 26.12.2008 KR
Title
(EN) Non-oriented electrical steel sheets having high workability for client companies and manufacturing method thereof
(ZH) 对客户公司而言具有高可加工性的无取向电工钢板及该钢板的制备方法
Abstract
(EN)
The present invention relates to non-oriented electrical steel sheets that are magnetized by SRA treatment and a manufacturing method thereof. The technical essence of the invention lies in: the non-oriented electrical steel sheets having strong magnetism by SRA treatment and comprising Si: 0.2 ~ 1.0%, Al: 0.9 ~ 2.0%, Mn: 0.1 ~ 0.5%, P: 0.01 ~ 0.05, the remaining % Fe; and other inevitable impurities, wherein Si and Al satisfy equations of 1.4=Si + Al=2.4 and 1=Al/Si=5; and the manufacturing method thereof. The present invention improves workability for client companies by obtaining a low Vickers hardness through deriving optimal process conditions and adjusting elements of Al and Si to optimum levels, and results in magnetism with high magnetic density and reduces iron loss through enhancing grain growth and improving texture.

(ZH)

本发明涉及一种在SRA之后具有优良磁性能的无取向电工钢板和该钢板的制备方法,本发明的技术本质在于:所述钢板通过SRA处理之后具有强磁性,并且其包含Si:0.2~1.0wt%、Al:0.9~2.0wt%、Mn:0.1~0.5wt%、P:0.01~0.05,其余为Fe及其他不可避免的杂质,其中Si和Al满足方程式1.4≤Si+Al≤2.4和1≤Al/Si≤5;和所述钢板的制备方法。本发明通过设置最佳加工条件和调节Al和Si元素至最佳水平来得到低维氏硬度而改进了对客户公司而言的可加工性,并通过增强晶粒生长和改进织构而得到了高磁通密度和低铁损耗。