Invention Grant
US07430888B2 Tubular metal body, method of producing same, liner for pressure vessel and method of producing same
失效
管状金属体，其制造方法，压力容器用衬垫及其制造方法
- Patent Title: Tubular metal body, method of producing same, liner for pressure vessel and method of producing same
- Patent Title (中): 管状金属体，其制造方法，压力容器用衬垫及其制造方法
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Application No.: US10554112Application Date: 2004-04-22
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Publication No.: US07430888B2Publication Date: 2008-10-07
- Inventor: Yasuhiro Osame
- Applicant: Yasuhiro Osame
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Showa Denko K.K.,Honda Motor Co., Ltd.
- Current Assignee: Showa Denko K.K.,Honda Motor Co., Ltd.
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2003-121286 20030425; JP2003-121297 20030425
- International Application: PCT/JP2004/005817 WO 20040422
- International Announcement: WO2004/096459 WO 20041111
- Main IPC: B21C23/00
- IPC: B21C23/00
Abstract:
A tubular metal body 1 comprises a tube 2 extruded through a porthole die and composed of a plurality of components 2b joined to one another with a plurality of joint portions 2a extending over the entire length of the tube. The base material metal of the extruded tube 2 in each of the joint portions 2a is subjected to a modifying treatment to produce finely divided crystal grains. The modifying treatment for the extruded tube 2 is conducted preferably by frictionally agitating each joint portion using a probe 8 of a friction agitation joining tool 6. The tubular metal body 1 is available with an increased length in a larger size and has high pressure resistance.
Public/Granted literature
- US20060260376A1 Tubular metal body, method of producing same, liner for pressure vessel and method of producing same Public/Granted day:2006-11-23
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