Process for improving the planeness of a metal sheet
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United States of America Patent
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Apr 17, 2001
Grant Date -
N/A
app pub date -
Jul 23, 1999
filing date -
Aug 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process for improving planeness of a metal sheet, in which the sheet is stretched between two jaws for a period of time, applying a controlled permanent elongation of greater than 0.5%. Transverse pressure is applied on at least one face of the sheet during at least part of the period time during which stretching is applied with at least one longitudinally movable roll, or with a metal bar clamped to an opposite face of the sheet.
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