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:
Apr. 28, 2009
Filed:
Aug. 02, 2005
Haruhiko Asao, Tokyo, JP;
Yutaka Koshiba, Tokyo, JP;
Keiji Nogami, Tokyo, JP;
Tutomu Masui, Osaka, JP;
Kazumasa Hori, Osaka, JP;
Kenji Wakiguchi, Osaka, JP;
Masahiko Wada, Osaka, JP;
Yoshiaki Hattori, Osaka, JP;
Haruhiko Asao, Tokyo, JP;
Yutaka Koshiba, Tokyo, JP;
Keiji Nogami, Tokyo, JP;
Tutomu Masui, Osaka, JP;
Kazumasa Hori, Osaka, JP;
Kenji Wakiguchi, Osaka, JP;
Masahiko Wada, Osaka, JP;
Yoshiaki Hattori, Osaka, JP;
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A method for manufacturing a low-oxygen copper wire is provided, in which a dehydrogenating treatment can be performed without requiring a long moving distance of molten copper, and the generation of holes in solidification is suppressed, whereby high quality low-oxygen copper wire can be obtained having superior surface quality. The method for continuously manufacturing ingots of low-oxygen copper from molten copper includes a step of performing combustion in a reducing atmosphere in a melting furnace so as to produce molten copper; a step of sealing the molten copper in a non-oxidizing atmosphere in a casting trough; a step of transferring the molten copper to a tundish by using the casting trough; a degassing step of passing the molten copper through a degasser provided in the casting trough so as to dehydrogenate the molten copper; a step of continuously feeding the molten copper to a continuous casting machine so as to continuously produce cast copper; and a step of cutting the cast copper into a predetermined length.