目前,由连铸或开坯工序生产的钢坯,都是经冷却和冷清理后,再在加热炉中重新加热到需要的开轧温度,送到轧机轧制。通过冷清理来消除钢坯的表面缺陷,以确保钢坯质量。该工序还可以作为板坯生产工序和热轧工序之间的一个缓冲工序,以减少管理上的困难。开坯后的钢坯温度一般为900～1100℃,连铸后钢坯温度是700～1000℃,回收这部分热量或充分地将这部分热量用 At present, the billet produced by continuous casting or billet production is cooled and cleaned, then reheated to the required open temperature in a heating furnace, and delivered to a rolling mill. By cold cleaning to eliminate the surface defects of billet, to ensure the quality of the billet. The process can also serve as a buffer between the slab production process and the hot rolling process to reduce management difficulties. After billet billet temperature is generally 900 ~ 1100 ℃, billet continuous casting temperature is 700 ~ 1000 ℃, recover this part of the heat or fully use this part of the heat with