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为了解决薄板坯连铸连轧生产线隧道炉不能实现自动控制而导致温度控制精度低、能耗高等问题,在对现有设备、控制系统进行充分调研的基础上,优化了基础自动化(L1)系统的炉温闭环算法及参数,开发了功能齐全的过程控制(L2)系统并投入运行。生产结果表明,新的L1及L2系统可提高板坯的温度控制精度,板坯温度同板差低于±20℃的命中率达到了96%,煤气消耗下降了7 kg/t,同时产品表面质量也得到了改善。
In order to solve the problem of low precision and high energy consumption in the tunnel furnace of thin slab continuous casting and rolling production line, the basic automation (L1) system was optimized on the basis of full investigation of the existing equipment and control system The furnace temperature closed loop algorithm and parameters, developed a fully functional process control (L2) system and put it into operation. Production results show that the new L1 and L2 systems can increase the temperature control accuracy of the slab, the slab temperature hit 96% with the slab temperature difference less than ± 20 ℃ and the gas consumption decreased by 7 kg / t, meanwhile the surface of the product Quality has also been improved.