Heavy Plate Rolling Mill Torque Control Technology And Bite Ultimate Research

After2005, the domestic plate production has shown a rapid growth trend, during thefinancial crisis in2008once made the plate new expansion of production capacity andoutput growth was forced to postpone, but after2010as the economy recovers, the newplate capacity back into the production peak, and make serious plate excess capacitycontinued to the present. Serious excess capacity in the domestic production of iron andsteel plate, high raw material prices, the cost of production pressure is huge, and thedownstream process of steel demand has no obvious improvement, market competition isunusually intense, the above conditions determine the Steel Corp’s profit or even losses. Inthe face of external adverse factors, the first Qin4300mm production line must pass tofurther enhance the level of rolling process control, optimization and upgrading oftraditional rolling mode, give full play to the potential of equipment and other measures tolower production cost, high performance, high quality steel line, so as to achieve the firstQin in plate market competitiveness significantly improve.Shouqin company4300mm double stand mill is the core technology of steel rollingproduction line equipment, the process of rough rolling, rolling mill for plate. The processof rough rolling, rolling force has a great effect on the final performance of steel plate, theresearch on control technology of the peak torque, torque analysis of factors influence ofrolling speed, rolling temperature, rolling torque of the proposed test method foroptimization in pipeline steel, heavy plate varieties on practice, finally break Siemensdesigned for maximum torque limit roughing stage, increase the reduction amount,improve the quality of the plate. The overload roll gap control function, in the premise ofprotecting the safety of equipment is raised under the rough rolling average torque, realizethe full release of rough rolling mill capacity. Through the mill nip angle and theconvexity of the research, the rolling schedule optimization, breakthrough the bite angletheory limit, to ensure the high level performance of sheet and plate shape have reached ahigher qualified rate.