KR940009348A

KR940009348A - Non-oriented electrical steel sheet with excellent magnetic properties and manufacturing method

Info

Publication number: KR940009348A
Application number: KR1019920018619A
Authority: KR
Inventors: 배병근
Original assignee: 정명식; 포항종합제철 주식회사; 백덕현; 재단법인산업과학기술연구소
Priority date: 1992-10-09
Filing date: 1992-10-09
Publication date: 1994-05-20
Also published as: KR950003293B1

Abstract

본 발명은 각종모터, 발전기 소형변압기등의 철심으로 사용되는 무방향성 전기강판 및 그 제조방법에 관한 것으로서, Ni 및 Cu를 함유하고, 여기에 Sn 및 Sb를 1종 혹은 2종을 첨가한 성분게에 Ca 및 희토류원소(REM)중 1종 또는 2종을 적정량 첨가하므로서 자성에 유해한 S등의 불순물이 조대화되어 결정립 성장이 용이하고, 집합조직도 자성에 유리하게 형성됨으로써 철손이 낮으면서도 자속밀도와 투자율이 높은 무방향성 전기강판을 제공하고자 하는데, 그 목적이 있다.The present invention relates to a non-oriented electrical steel sheet used for iron cores of various motors, generator small transformers and the like, and to a method of manufacturing the same, comprising Ni and Cu, and adding one or two kinds of Sn and Sb thereto. By adding an appropriate amount of Ca and rare earth elements (REM) to the soil, impurities such as S, which are harmful to magnetism, are coarsened to facilitate grain growth. To provide a high permeability non-oriented electrical steel sheet, the purpose is to.

본 발명은 중량%로, C : 0.02%이하, Si : 3.5%이하, Mn : 0.5%이하, P : 0.15%이하, S : 0.01%이하, N : 0.008%이하, Al : 0.7%이하, Ni : 0.02~1.0%, Cu : 0.02~0.5% 및 Sn과 Sb중 1종 또는 2종의 합 : 0.02-0.2%를 함유하고, 여기에 Ca : 0.001-0.02%와 희토류원소(REM) : 0.003-0.03%중 1종 또는 2종을 첨가하고, 잔부 Fe 및 기타불가피하게 함유되는 불순물로 조성되는 자기특성이 우수한 무방향성 전기강판 및 그 제조방법을 요지로 한다.The present invention is by weight, C: 0.02% or less, Si: 3.5% or less, Mn: 0.5% or less, P: 0.15% or less, S: 0.01% or less, N: 0.008% or less, Al: 0.7% or less, Ni : 0.02 ~ 1.0%, Cu: 0.02 ~ 0.5% and one or two kinds of Sn and Sb: 0.02-0.2%, including Ca: 0.001-0.02% and rare earth element (REM): 0.003- The non-oriented electrical steel sheet which adds 1 or 2 types of 0.03%, and is excellent in the magnetic property which consists of remainder Fe and other inevitable impurities, and its manufacturing method are summary.

Description

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

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims

By weight%, C: 0.02% or less, Si: 3.5% or less, Mn: 0.5% or less, P: 0.15% or less, S: 0.01% or less, N: 0.008% or less, Al: 0.7% or less, Ni: 0.02 to 1.0%, Cu: 0.02-0.5%, and one or two of Sn and Sb: 0.02-0.2%, including Ca: 0.001-0.02% and rare earth elements (REM): 0.003-0.03% A non-oriented electrical steel sheet having excellent magnetic properties, characterized in that it is added with one or two kinds, and is composed of the balance Fe and other inevitable impurities.

The non-oriented electrical steel sheet having excellent magnetic properties according to claim 1, wherein C is 0.008% or less.

Weight%, C: 0.02% or less, Si: 3.5% or less, Mn: 0.5% or less, P: 0.15% or less, S: 0.01% or less, N: 0.008% or less, Al: 0.7% or less, Ni: 0.02-1.0 %, Cu: 0.02-0.5%, and one or two kinds of Sn and Sb: 0.02-0.2%, including Ca: 0.001-0.02% and rare earth elements (REM): 0.003-0.03% Or in combination, hot rolled steel slab composed of the remaining Fe and other unavoidable impurities in a conventional manner, and after winding, the hot rolled plate as it is or annealed, followed by pickling, one-stage cold rolling or Non-oriented electrical steel sheet having excellent magnetic properties, characterized in that it is cold rolled by a two-stage cold rolling method of primary cold rolling, intermediate annealing, and secondary cold rolling, followed by a fully process of annealing at a high temperature. Manufacturing method.

Weight%, C; 0.02% or less, Si: 3.5% or less, Mn: 0.5% or less, P: 0.15% or less, S; 0.01% or less, N: 0.008 or less, A1: 0.7% or less, Ni: 0.02-1.0% , Cu: 0.02-0.5%, and one or two kinds of Sn and Sb: 0.02-0.2%, wherein Ca: 0.001-0.02% and Rare Earth Element (REM): 0.003-0.03% The steel slab, which is added alone or in combination, is composed of the remaining Fe and other inevitably contained impurities, hot rolled by a conventional method, and after winding, the hot rolled plate as it is or annealed, followed by pickling and primary cold rolling. A method for producing a non-oriented electrical steel sheet having excellent magnetic properties, characterized in that the semi-process to be reduced in pressure after the intermediate annealing.

※ Note: The disclosure is based on the initial application.