Tail end buckling suppression device

A tail end buckling suppression device for a tandem rolling mill rolling a material to be rolled by N (N≥3) rolling stands arranged in series, wherein:

• each i-th rolling stand (1≤i≤N) of the tandem rolling mill includes an i-th roll bender device configured to screw down the material to be rolled with preset roll bender pressure;
• and
• a control device including a processor and a memory storing instructions that, when executed by the processor, cause the tail end buckling suppression device to perform causing each of the j+1-th to N-th roll bender devices to continuously lower the roll bender pressure as follows:
• during a period beginning when a tail end of the material to be rolled comes out of one designated j-th rolling stand (1≤j≤N−1) until the tail end of the material to be rolled comes out of the N-th rolling stand, the tail end buckling suppression device causes each of j+1-th to N-th roll bender devices downstream of the j-th rolling stand to continuously lower the roll bender pressure from the roll bender pressure preset for each of the j+1-th to N-th roll bender devices, wherein the continuous lowering of the roll bender pressure for each of the j+1-th to N-th roll bender devices is initiated when the tail end of the material to be rolled comes out of the j-th rolling stand.