Title:
ALLOY STEEL MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/022682
Kind Code:
A1
Abstract:
The present invention relates to an alloy steel manufacturing method comprising the processes of: preparing a first molten ferroalloy containing manganese; preparing a second molten ferroalloy containing chromium; preparing a molten steel; mixing the first molten ferroalloy and the second molten ferroalloy to produce a third molten ferroalloy; and pouring the third molten ferroalloy into the molten steel to manufacture an alloy steel, wherein the converter endpoint temperature of the molten steel is reduced to improve a phosphorus controlling potential upon refining in the converter, thereby effectively controlling a phosphorus concentration in the molten steel.
Inventors:
HAN WOONG HEE (KR)
YUN YEO SUN (KR)
KANG SOO CHANG (KR)
SON JUNG HWAN (KR)
YUN YEO SUN (KR)
KANG SOO CHANG (KR)
SON JUNG HWAN (KR)
Application Number:
PCT/KR2019/008721
Publication Date:
January 30, 2020
Filing Date:
July 15, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C33/04; C22C1/02; C22C38/38
Foreign References:
| KR20140082025A | 2014-07-02 | |||
| KR20180024286A | 2018-03-08 | |||
| KR100889859B1 | 2009-03-24 | |||
| KR20060059277A | 2006-06-01 | |||
| JPH10140227A | 1998-05-26 | |||
| KR20180024286A | 2018-03-08 |
Other References:
See also references of EP 3828295A4
Attorney, Agent or Firm:
NAM, Seung-Hee (KR)
Download PDF:
Previous Patent: METHOD FOR MANUFACTURING 2-CYANOETHYL GROUP-CONTAINING POLYMER
Next Patent: COKE AND MANUFACTURING METHOD THEREFOR
Next Patent: COKE AND MANUFACTURING METHOD THEREFOR