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:
Dec. 06, 1983
Filed:
Mar. 17, 1982
Ryuichi Nakagawa, Seki, JP;
Shiro Yoshimatsu, Tokyo, JP;
Akira Fukuzawa, Funabashi, JP;
Akira Sato, Ohmiya, JP;
Tsuyoshi Ozaki, Ohmiya, JP;
National Research Institute for Metals, Tokyo, JP;
Abstract
In a continuous melting, refining and casting process which comprises, substantially in series, a step of melting and carburizing steel scrap, iron scrap and/or reduced iron as a raw material in a combustion-type melting furnace, a refining step by blowing of oxygen, a refining and holding step and a continuous casting step, the improvement wherein an intermediate holding step in a holding furnace is provided between the melting and carburizing step and the refining step so that the molten metal tapped from the melting furnace is held in the intermediate holding furnace for a certain period of time and continuously fed to the refining step at a predetermined flow rate, and wherein the refining conditions in the refining step are controlled according to one or more characteristics of the molten metal in the intermediate holding step.