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热装是将热坯不经过冷却和清理,在500℃左右装入加热炉;直接轧制则是把开坯钢坯或连铸坯不经加热直接送轧机轧制。为确保热装和直接轧制技术的实施,努力提高钢坯或连铸坯的质量,采取措施确保轧制温度,协调好各工序间的操作,并采用稳定操作技术。采用CC-DR法燃耗是335MJ/t,是IC-冷坯法的1/6;300～600℃热装时燃耗可降低210～460MJ/t。直接轧制带钢厚度差减小,收得率提高。鞍钢在建设新区时应考虑采用热装和直接轧制技术。
Hot equipment is the hot billet without cooling and cleaning, at about 500 ℃ into the furnace; direct rolling is to open billet or slab without heating directly to the rolling mill. In order to ensure the implementation of hot-rolling and direct rolling technology, efforts have been made to improve the quality of billets or slabs, measures taken to ensure the rolling temperature, to coordinate the operation of the various processes and to adopt stable operation techniques. The fuel consumption of the CC-DR method is 335MJ / t, which is 1/6 of that of the IC-cold blank method. The fuel consumption can be reduced by 210 ~ 460MJ / t when hot-installed at 300-600 ℃. Direct rolling strip thickness difference decreases, the yield increase. Anshan Iron and Steel in the construction of new areas should consider the use of hot-rolled and direct rolling technology.