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Patent Searching and Data


Title:
ALUMINUM HOLLOW EXTRUDED MATERIAL AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2009279601
Kind Code:
A
Abstract:

To provide an aluminum hollow extruded material capable of improving moldability of a welded part and minimizing thickness fluctuation of a molded article after hot forming when a tube expansion forming such as a hot bulging at a high temperature is carried out by integral molding requiring a high tube expansion rate to the aluminum hollow extruded material having the welded part.

The aluminum hollow extruded material having the welded part is used as a material for hot tube expansion forming. At a stage before hot tube expansion working, working with a sectional area reduction ratio(%) of 15% defined by the following formula: the sectional area reduction ratio(%)=[(a sectional area before working-a sectional area after the working)/the sectional area before the working]100 is applied by cold working to at least a part including an area becoming a tube expansion forming part later (a tube expansion forming scheduled part ).


Inventors:
WAKAKURI SATOSHI
TAGUCHI KAZUO
Application Number:
JP2008132647A
Publication Date:
December 03, 2009
Filing Date:
May 21, 2008
Export Citation:
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Assignee:
FURUKAWA SKY ALUMINUM CORP
International Classes:
B21C23/08; B21D26/033; B21D26/053; B21D51/16
Attorney, Agent or Firm:
Hiroshi Sugimoto
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Kimihiro Hoshi
Hiroyasu Ninomiya
Shuichi Sumiyoshi
Einzel Felix-Reinhard
Takaho Kawawa