The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 1986
Filed:
Jun. 18, 1985
Applicant:
Inventors:
Tetsuya Fujii, Chiba, JP;
Nobuo Harada, Chiba, JP;
Shuji Takeuchi, Chiba, JP;
Yoshiei Kato, Chiba, JP;
Hideo Nakamura, Chiba, JP;
Toshikazu Sakuraya, Chiba, JP;
Yasuhiro Habu, Chiba, JP;
Assignee:
Kawasaki Steel Company, Kobe, JP;
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
75 5922 ; 75 5923 ; 75 5924 ;
Abstract
A process for producing an extremely low carbon steel in a top- and bottom-blown converter. The process is characterized in top-blowing a mixed gas of oxygen gas and an inert gas onto a molten steel in the top- and bottom-blown converter. The mixed gas is blown through a top-blowing lance at the final decarburization stage, while a gas (selected from a group consisting of an inert gas, oxygen gas and a mixture of oxygen and an inert gas) is bottom-blown into the molten steel in the converter.