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带卷箱新设备与中间轧机的出现,在热带钢轧机、改造中起着关键性作用。八十年代以来已不再发展“超级”全连续式热带钢轧机,而着重现有轧机的改造与新建3/4连续式,或建设串列可逆式粗轧机组的热带钢轧机。鞍钢半连续式热带钢轧机改造初步设计确定的内容实现后,产品质量将得到改善,精轧主电机更换增容,工艺轧制速度提高到12m/s,产量将有大幅度的提高,计算年产量可以从原195万t提高到280万t。造一步设想,上一台带卷箱、一架中间轧机,加大坯料单位宽度重量,实现12m/s恒速轧制,总投资估算7000万元,可使年产量从280万t再提高到360万t,增产80万t,十个半月可收回进一步改造的全部投资。
The emergence of new equipment and intermediate mills with coil boxes plays a key role in the transformation of the hot strip mills. Since the 1980s, the development of “super” all-in-all continuous hot strip mills is no longer underway. Instead, the existing mills have been transformed and new 3/4 continuous units have been built or tandem hot strip mills have been built. Anshan Iron and Steel semi-continuous transformation of the preliminary design of the hot strip mill to achieve the contents of the design to be achieved, the quality of products will be improved, the main rolling mill to replace the capacity increase, the process of rolling speed increased to 12m / s, the output will have a substantial increase in the calculation of The output can be raised from the original 1.95 million tons to 2.8 million tons. Make a further vision, the last with a coil box, an intermediate mill, increase the width of the blank unit weight to achieve 12m / s constant speed rolling, a total investment estimate of 70 million yuan, the annual output can be raised from 2.8 million t 3.6 million tons, an increase of 800,000 tons, 10 and a half months to recover all the further transformation of the investment.