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:
Mar. 03, 2009
Filed:
Oct. 28, 2003
Hiroaki Koyama, Tochigi-ken, JP;
Toshihiro Miyauchi, Tochigi-ken, JP;
Yasuhiro Shimamura, Utsunomiya, JP;
Michiharu Hasegawa, Mie-ken, JP;
Naoji Yamamoto, Shizuoka-ken, JP;
Masahito Hasuike, Hamamatsu, JP;
Noriyuki Miyazaki, Hamamatsu, JP;
Hiroaki Tohyama, Kumamoto, JP;
Hiroaki Koyama, Tochigi-ken, JP;
Toshihiro Miyauchi, Tochigi-ken, JP;
Yasuhiro Shimamura, Utsunomiya, JP;
Michiharu Hasegawa, Mie-ken, JP;
Naoji Yamamoto, Shizuoka-ken, JP;
Masahito Hasuike, Hamamatsu, JP;
Noriyuki Miyazaki, Hamamatsu, JP;
Hiroaki Tohyama, Kumamoto, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A mold for casting primarily of SMC420, wherein a cavity forming portion comprising maraging steel, which has the toughness and the resistance to heat shock superior to those of SMC420, is provided in a vertical wall heading for a cavity surface from a molten metal inlet and a portion nearest to the molten metal inlet in the cavity surface, which are portions suffering relatively large heat shock in the contact with a molten metal. Also provided is a method for providing the cavity forming portion, which comprises filling a concave portion of the mold with a molten metal prepared by melting a welding rod by arc welding, in other words, carrying out an overlaying welding, and then cooling and solidifying the molten metal.