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:
Dec. 27, 2011
Filed:
Jun. 24, 2009
Yasuyoshi Hidaka, Hyogo, JP;
Kazuhiro Shimoda, Hyogo, JP;
Kouji Nakaike, Wakayama, JP;
Naoya Hirase, Wakayama, JP;
Yasuto Higashida, Hyogo, JP;
Takateru Inage, Wakayama, JP;
Jyun Nagakita, Wakayama, JP;
Masaharu Nakamori, Hyogo, JP;
Fumihito Yoshikawa, Hyogo, JP;
Yoshihiko Hayashi, Hyogo, JP;
Takayuki Aisaka, Hyogo, JP;
Yasuyoshi Hidaka, Hyogo, JP;
Kazuhiro Shimoda, Hyogo, JP;
Kouji Nakaike, Wakayama, JP;
Naoya Hirase, Wakayama, JP;
Yasuto Higashida, Hyogo, JP;
Takateru Inage, Wakayama, JP;
Jyun Nagakita, Wakayama, JP;
Masaharu Nakamori, Hyogo, JP;
Fumihito Yoshikawa, Hyogo, JP;
Yoshihiko Hayashi, Hyogo, JP;
Takayuki Aisaka, Hyogo, JP;
Sumitomo Metal Industries, Ltd., Osaka-shi, JP;
Abstract
A piercing and rolling plug has a film composed of oxides such as FeOand FeO and Fe (metal) as being formed on the surface of the base metal by electric arc spraying using an iron wire whose main component is Fe and, owing to this film, a plug excellent in heat-shielding and seizure-preventing effects can be realized and the lifetime of the plug can be prolonged. Further, in regenerating this plug, a film can be re-formed via the steps of shot blasting of the as-used plug in piercing and rolling and electric arc spraying in that order; thus, it is possible to regenerate the plug at low cost and in a short period of time.