Process for rolling a metal product
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United States of America Patent
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Feb 25, 2003
Grant Date -
N/A
app pub date -
Sep 20, 1999
filing date -
Sep 21, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a process for rolling a metal product by successive passes into at least one roll stand associated with a calculation unit comprising a computer and a mathematical model for adjusting the rolling load applied by the clamping means. According to the invention, before each pass, the computer associated with the mathematical model determines a predictable variation value of the flow stress of the metal corresponding to the deformation to be realized in the pass considered, while taking into account the evolution, during the rolling operation, of the microcrystalline structure of the metal making up the product to be rolled, and the rolling load to be applied in order to achieve the requested reduction in thickness is calculated before each pass according to the value thus predicted for the flow stress and the evolution of the microcrystalline during the rolling operation.
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