Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1999-01-13
2000-06-27
Tolan, Ed
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 103, 72 114, 72205, 723652, B21B 3748
Patent
active
060792426
ABSTRACT:
A method of controlling a continuous skin-pass and reduction operation for a metal strip includes the steps of passing a strip through a gap between working rollers of at least two successive rolling stands, only an upstream one of the stands providing substantial thickness reduction of the strip; determining an extension rate of the strip provided by the upstream stand; determining a tension of the strip downstream of the upstream stand; adjusting the speed of the working rollers of the upstream stand compared to the speed of the working rollers of a downstream one of said stands according to the determination of the extension rate; and adjusting the squeezing force of the upstream stand according to the downstream tension determination. A response time to the step of adjustment of the squeezing force is longer than a response time to the step of adjusting the speed of the working rollers.
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Allegro Fernand
Becler Didier
Bertolini Frederic
Chauvire Michel
Devos Rodolphe
Sollac
Tolan Ed
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