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:
Oct. 17, 1978
Filed:
May. 02, 1977
Kohichiroh Miyauchi, Fukuyama, JP;
Atsushi Ohsumi, Fukuyama, JP;
Yukio Haga, Fukuyama, JP;
Tsutomu Izumi, Fukuyama, JP;
Masahiro Tsuru, Fukuyama, JP;
Kazuo Kunioka, Yokohama, JP;
Shunichi Sugiyama, Yokohama, JP;
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
A steel ingot having a still-liquid portion therein is charged into a soaking pit; then, said ingot is heated by injecting a fuel from a combustion unit of said soaking pit into said soaking pit with a constant and minimum fuel flow rate capable of holding a pit temperature higher by from 10 to 100.degree. C than the cold point temperature of said ingot at the completion of solidification of said still-liquid portion in said ingot, until said still-liquid portion in said ingot is completely solidified; and then, upon the completion of said solidification, the surface portions of said ingot are further heated up to above a prescribed temperature permitting rolling thereof by injecting a fuel from said combustion unit into said soaking pit with a constant fuel flow rate of at least 60% of the maximum fuel flow rate of said combustion unit, thereby reducing the fuel consumption in said soaking pit.