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. 01, 1987
Filed:
Nov. 24, 1986
Jiro Harase, Kitakyushu, JP;
Kuniteru Ohta, Kitakyushu, JP;
Tetsurou Takeshita, Kitakyushu, JP;
Michio Endo, Kawasaki, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
The Cr-series stainless steel sheet heretofore produced by a method including annealing a hot-rolled strip for decomposing the .alpha.'-phase or .gamma.-transformed phase therein, can be produced by omitting this annealing. In the method according to the present invention, a thin casting is cooled from the solidification temperature to the end temperature of the .gamma.-phase-precipitation at a cooling speed at least equal to the air cooling-speed, thereby avoiding the .gamma.-phase-precipitation. Then, the precipitation treatment for precipitating the supersaturated C, N, and S, or the heating to the .alpha.+.gamma. dual phase-temperature region for precipitating the .gamma.-phase, is carried out.