Metal deforming – By use of roller or roller-like tool-element – With cleaning or conditioning of tool – or lubrication of...
Reexamination Certificate
2005-11-09
2009-12-15
Ross, Dana (Department: 3725)
Metal deforming
By use of roller or roller-like tool-element
With cleaning or conditioning of tool, or lubrication of...
C072S257000
Reexamination Certificate
active
07631530
ABSTRACT:
The invention is directed to a aluminum pipe production method comprising an extrusion step for obtaining an aluminum raw pipe (10) and a drawing step for executing a drawing process of the aluminum raw pipe (10). Before executing the drawing step a slug removing step for removing aluminum slugs (1) adhering to a surface of the aluminum raw pipe (10) is executed by rubbing off the aluminum slugs (1). This can provide an aluminum pipe production method capable of preventing generation of defect protrusions while improving the productivity.
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Hamano Hidemitsu
Kanayama Takanori
Miyazaki Masahiro
Bonk Teresa M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ross Dana
Showa Denko K.K.
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