Hot rolling thin strip
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 22, 2006
Grant Date -
Feb 12, 2004
app pub date -
May 25, 2001
filing date -
May 26, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Thin steel strip is passed through a pinch roll stand comprising pinch rolls to a rolling mill comprising a pair of work rolls and upper and lower backing rolls. Strip passes through the bite between the work rolls and strip squeezing forces are applied between the work rolls to reduce the thickness of the strip. The pinch rolls apply tension to the strip passing to the work rolls. In order to minimize generation of crimping defects in the strip, the tension applied by the pinch rolls is high enough to ensure no part of the strip entering the work rolls is in longitudinal compression such as to exceed the buckling stress of the strip. The applied tension is sufficiently low as to produce no more than 1% strip elongation through creep. The strip may be hot rolled by the work rolls at a temperature in the range of 700.degree. C. 1200.degree. C.
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