| abstract |
The invention discloses a fully continuous production device and method for hot-rolled strip steel for ferrite rolling. The device has a short production line and reasonable configuration of various components; it adopts a multi-functional cooling device, which integrates the functions of high-pressure water descaling and intermediate billet cooling, which is more simple and efficient; The temperature detector and the close-range downcoiler can reduce the cooling load of the intermediate billet, realize the precise temperature control of the process, and help improve the product quality. The method is as follows: continuous casting into billets → high-pressure water rotary descaling → rough rolling in a 4-stand large-reduction roughing mill → rotary drum shearing → high-pressure water dephosphorization in a multi-functional cooling device and cooling → 3 or 4-stand fine-tuning Finishing rolling of rolling mill → air cooling → high-speed flying shear sub-coiling → downcoiler coiling, in which temperature monitoring is performed after rough rolling, before and after finishing rolling, and before downcoiler coiling. The method has low energy consumption and cost, good product quality and thin thickness, and can better meet the performance requirements of "replacing cooling with heat". |