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Title:
穿孔圧延用プラグ、その穿孔圧延用プラグの再生方法、およびその穿孔圧延用プラグの再生設備列
Document Type and Number:
Japanese Patent JP4279350
Kind Code:
B1
Abstract:
A piercing and rolling plug has a film composed of oxides such as Fe 3 O 4 and 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.

Inventors:
Yasuyoshi Hidaka
Kazumune Shimoda
Hiroshi Nakaike
Naoya Hirase
Yasuto Higashida
Takamitsu Inage
Jun Kita
Shoji Nakamori
Yoshikawa Fumito
Yoshihiko Hayashi
Takayuki Aisaka
Application Number:
JP2008550301A
Publication Date:
June 17, 2009
Filing Date:
October 20, 2008
Export Citation:
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Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
Osaka Fuji Industry Co., Ltd.
International Classes:
B21B19/04; B21B25/00; B21B25/04; B21B25/06
Attorney, Agent or Firm:
Michio Mori