Processing

Please wait...

Settings

Settings

1. IN4637/DELNP/2011 - NON-ORIENTED ELECTRICAL STEEL SHEETS HAVING HIGH WORKABILITY FOR CLIENT COMPANIES AND MANUFACTURING METHOD THEREOF

Office India
Application Number 4637/DELNP/2011
Application Date 16.06.2011
Publication Number 4637/DELNP/2011
Publication Date 27.04.2012
Publication Kind A
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
C21D 8/12
Applicants POSCO
Inventors KIM  Jae-Hoon
KIM  Yong-Soo
KIM  Jae-Kwan
BONG  Won-Seog
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
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.