Aluminum pipe production method

Metal deforming – By use of roller or roller-like tool-element – With cleaning or conditioning of tool – or lubrication of...

Reexamination Certificate

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Details

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.

REFERENCES:
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patent: 8 82939 (1996-03-01), None
patent: 9 319127 (1997-12-01), None
patent: 10-83089 (1998-03-01), None
patent: 2001-205178 (2001-07-01), None
patent: 2002-123024 (2002-04-01), None
patent: 2004 9227 (2004-01-01), None

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