Process for levelling continuously moving metal strips
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United States of America Patent
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Nov 10, 1992
Grant Date -
N/A
app pub date -
Aug 1, 1991
filing date -
Aug 4, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for levelling continuously moving metal strips exclusively by tensile rolling levelling. The strip to be levelled is subjected to two successive tensile rolling operations in the direction in which it moves. In the first tensile rolling operation the tensile rolling levelling is performed with relatively low tensile stressing and considerable rolling deformation, while over the second tensile rolling distance the strip is subjected to only slight bending with substantially higher tensile stressing. The result of these successive different kinds of stretching-and-rolling levelling is a flat strip which maintains its flatness even after a prolonged storage period.
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