Hot continuous rolling strip thick plate coiling temperature control method
A temperature control method and coil technology, applied in the field of metallurgical hot continuous rolling, can solve the problems of low coiling temperature, large impact damage of roll surface and mechanical equipment, etc., and achieve the effect of easy bending deformation and reduced impact damage
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[0069] The technology of the present invention has been implemented in the 2050 hot rolling production line of Baosteel Co., Ltd., and has achieved good practical application effects through continuous improvement and optimization.
[0070] 1) Two-stage target finishing temperature control.
[0071] See Figure 5a :
[0072] ① The first stage target finish rolling temperature control, within the target distance from 0 to L1' at the head of the thick plate, increase the target finish rolling temperature at the head to FT1'. Correspondingly, the upper limit of the target finishing temperature of the head is increased to FT2', and the lower limit of the target finishing temperature of the head is reduced to FT3'. Due to the problem of control accuracy, the target distance also has a target distance upper limit L2' and a target distance lower limit L3'. That is to say, at least ensure that the minimum temperature within the distance from 0 to L3' of the slab head is increased t...
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