Tube drawing method and device
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United States of America Patent
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-
Jan 4, 2005
Grant Date -
Nov 21, 2002
app pub date -
Apr 9, 2002
filing date -
Apr 11, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of elongating a tube (10) by way of a drawing ring (13), wherein, when elongating the tube (10), tensile forces are applied to an elongated tube portion (22) which has already passed through the effective drawing ring cross-section and that pressure forces are applied to a tube blank portion (11) which has not yet passed through the effective drawing ring cross-section, wherein the tensile forces are applied by a mandrel (16) which is positioned in the tube and which is connected to a front tube end in a form-fitting or force-locking way.
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