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. 06, 1987
Filed:
Jul. 03, 1985
Kuniaki Maruoka, Kitakyushu, JP;
Nobuyuki Takahashi, Kitakyushu, JP;
Senkichi Tujimura, Kitakyushu, JP;
Yasuhiko Yamashita, Kitakyushu, JP;
Setsuo Otsuka, Kitakyushu, JP;
Isao Oohasi, Kitakyushu, JP;
Takeo Motoyama, Kitakyushu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
Steel blackplate for surface treatment, having a soft temper degree of T-3 or less, and improved fluting resistance is produced by the combination of a chemical composition of 0.01% to 0.08% carbon, 0.015% or less phosphorus, without titanium and niobium; steelmaking without vacuum-degassing; a low slab-heating temperature of 1240.degree. C. or less; a coiling temperature of 620.degree. C. to 710.degree. C.; continuous annealing having a heat pattern to decrease the solute carbon and nitrogen; and skin-pass rolling.