To provide a method for straightening a steel sheet having different thickness by which the deformation of a tapered portion of the steel sheet having different thickness, whose shape changes in its thickness direction, can be straightened surely without using any high-speed rolling-reduction cylinder even when the sheet passing speed is high.
In the method for straightening a steel sheet having different thickness by the rolling reduction using a pair of upper and lower work rolls, the sheet passing speed at a tapered portion of the steel sheet having different thickness is set to be lower (preferably, a value to satisfy the formula (A)) than that in a flat portion. The formula (A) is given by TV=(K1/(α-K3))+K2 (A), where α(≥0) : taper ratio, and K1-K3: constants to be determined by the specification of a straightening machine.
WAKATSUKI KUNIHIKO
IKEDA KASHIRO
| JPH08257637A | 1996-10-08 | |||
| JPS49109256A | 1974-10-17 | |||
| JPH07178455A | 1995-07-18 | |||
| JP2005125332A | 2005-05-19 | |||
| JPS61172603A | 1986-08-04 | |||
| JPS59107705A | 1984-06-22 | |||
| JPS4637086B1 |
Shiina Akira
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