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:
Aug. 22, 1995
Filed:
May. 17, 1994
Tomoo Takenouchi, Hokkaido, JP;
Yoshiaki Ichinomiya, Hokkaido, JP;
Junji Ishizaka, Hokkaido, JP;
Junji Itagaki, Tokyo, JP;
Shuzo Ohhashi, Hokkaido, JP;
Tsukasa Azuma, Hokkaido, JP;
Yasuhiko Tanaka, Hokkaido, JP;
The Japan Steel Works, Tokyo, JP;
Abstract
An object of the present invention is to provide an ingot wherein occurrence is prevented when an electroslag remelting method is used for producing a large ingot and which a super alloy is sensitive to segragation. According to the present invention, the electrode for electroslag remelting method has a hole formed along an axial direction in the core of an electrode. Therefore, the molten pool is made shallow so that flat and segregation is prevented from occurring. Consequently, an ESR ingot of good quality is accomplished with an excellent surface and is free from segregation. Moreover, an electrode melting rate is increasing and efficiency is improved.