Forge welding tubulars
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United States of America Patent
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Aug 17, 2010
Issued Date -
N/A
app pub date -
Nov 7, 2006
filing date -
Jul 17, 2003
priority date (Note) -
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Abstract
Tubular ends are heated to a predetermined temperature above 1200 degrees Celsius and surrounded by a shield gas when the tubular ends are pressed together to form forge welded tubular ends. The forge welded tubular ends are then cooled down rapidly from said temperature above 1200 to at most 600 degrees Celsius within 3 minutes after the forge welding operation.
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