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:
Feb. 27, 2007
Filed:
Jun. 17, 2003
Atsushi Andoh, Sakai, JP;
Atsushi Komatsu, Kyoto, JP;
Katsuyuki Takezaki, Sakai, JP;
Yasutaka Kawaguchi, Tokyo, JP;
Yasuhiro Yamamoto, Tokyo, JP;
Ryuuji Ninomiya, Ageo, JP;
Atsushi Andoh, Sakai, JP;
Atsushi Komatsu, Kyoto, JP;
Katsuyuki Takezaki, Sakai, JP;
Yasutaka Kawaguchi, Tokyo, JP;
Yasuhiro Yamamoto, Tokyo, JP;
Ryuuji Ninomiya, Ageo, JP;
Nisshin Steel Co., Ltd., Tokyo, JP;
Abstract
A molten zinc alloy, which contains 4–22 mass % Al, 1–7 mass % Mg and optionally one ore more of Ti, B and Si at very small ratios, is held at a temperature Thigher than (a solidification-beginning temperature T+85° C.) for homogenization, and then cooled down to a temperature Tequal to (T+20–65° C.). After the molten alloy is poured in a mold, it is naturally cooled and solidified to an ingot, while its upper part is being heated. Once an upper surface of the zinc alloy in the mold begins to solidify, it is optionally cooled with water. The produced ingot has a structure without cracks or cavities, so that it is safely fed to a molten pool for replenishment.