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:
May. 16, 1989
Filed:
Jan. 22, 1988
Applicant:
Inventors:
Hidemaro Takeuchi, Hikari, JP;
Shogo Matsumura, Hikari, JP;
Harumi Tsuboi, Hikari, JP;
Masao Yamamiya, Hikari, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164488 ; 164134 ; 164437 ; 75 46 ;
Abstract
A method of continuously casting lead-bearing steel by adding lead to steel melt in a tundish. The tundish is divided into a plurality of chambers including a melt receiving chamber and an immersed nozzle chamber, lead is supplied to the molten steel in a chamber other than the immersed nozzle chamber so as to form a lead sediment layer at the bottom thereof, and molten steel containing suspended Pb is passed to the immersed nozzle chamber from where it is poured into a mold of the continuous caster.