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缓冷工序是根据工艺要求将轧制好的缓冷钢板吊进坑内,将缓冷坑温度加热到工艺规定的目标温度,经过规定的缓冷时间后出坑的作业过程。本次活动就是围绕缓冷坑的能耗展开的。常规的加热方式是采用4个区、20个烧嘴循环工作,将煤气与空气混合燃烧进行加热。缓冷则是为了防止合金元素在高温冷却过程中发生相变,防止组织应力发生变化而导致钢板表面和内部产生裂纹,以及氢、硫、磷等有害元素缓慢渗出。经过缓冷工序后得到的通常为核电用钢、配套
Slow cooling process is based on process requirements will be rolled good cold rolled steel hanging into the pit, the slow cooling pit temperature is heated to the process of the target temperature, after a predetermined slow cooling time pit operation process. This activity is around the energy consumption of slow pit started. Conventional heating method is the use of 4 zones, 20 burner cycle work, the mixed gas and air combustion heating. Slow cooling is to prevent alloying elements in the high temperature cooling phase transition occurred, to prevent changes in tissue stress caused by cracks on the surface and internal steel, and hydrogen, sulfur, phosphorus and other harmful elements exudation slowly. After the slow cooling process is usually obtained for nuclear power steel, supporting