GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Title:

GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2022/139354

Kind Code:

A1

Abstract:

A grain-oriented electrical steel sheet according to one embodiment of the present invention comprises, by wt%, 2.0-4.0% of Si, 0.04-0.2% of Mn, 0.010% or less of N (excluding 0%), 0.005% or less of C (excluding 0%), 0.03-0.08% of Sn and 0.01-0.2% of Cr, the balance of Fe and inevitable impurities, and inclusions comprising at least one from among AlN, (Al,Si)N, (Al,Si,Mn)N, MnS, CuS and Al2O3, wherein the average diameter of the inclusions is 0.5-6.0 μm, and 40-130/mm2 inclusions having a diameter of 6.0 μm or less from among the inclusions can be included.

More Like This:

JP3819529	CASE HARDENING STEEL EXCELLENT IN COLD WORKABILITY
JPS59226148	CHAIN STEEL HAVING HIGH TENSILE STRENGTH AND ITS MANUFACTURE
JPH0472042	POWDERY HIGH SPEED TOOL STEEL HAVING HIGH HARDNESS AND HIGH WEAR RESISTANCE

Inventors:

SONG DAEHYUN (KR)
LEE SANGWOO (KR)

Application Number:

PCT/KR2021/019330

Publication Date:

June 30, 2022

Filing Date:

December 17, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

POSCO (KR)

International Classes:

C22C38/00; C21D8/12; C22C38/02; C22C38/04; C22C38/60; H01F1/147

Foreign References:

JP2003193142A	2003-07-09
KR20200066062A	2020-06-09
JPH04297525A	1992-10-21
JP2017133080A	2017-08-03
CN109112283A	2019-01-01

Attorney, Agent or Firm:

YOU ME PATENT AND LAW FIRM (KR)

Download PDF:

View/Download PDF PDF Help

Previous Patent: GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Next Patent: STEEL SHEET WITH EXCELLENT PHOSPHATABILITY AND MANUFACTURING METHOD THEREFOR