Method of and roll stand for diagonal rolling of tubes
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United States of America Patent
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Jul 8, 1997
Grant Date -
N/A
app pub date -
Aug 11, 1995
filing date -
Aug 12, 1994
priority date (Note) -
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Abstract
In a method and a roll stand for diagonal rolling of medium or thin-walled tube ingots, an inner mandrel rod is held at an inlet side and controllably axially displaceably relative to rolls. In order to avoid a funnel-shaped expansion at the tube ingot end, the rolling product during rolling is rolled in a constriction of the mandrel rod and thereby obtains a thickened wall forming a support of the tube ingot wall against the expansion.
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