利用设备及分拣工艺的特性实现了钢丸的自动分类,优化了和后续工艺之间的时间等待问题。介绍了s7-200 PLC在两部分整合连接工艺中的具体应用。PLC根据传感器检测到的信号判定优先级之后,控制盛放钢丸料斗阀门的开合,同时辨识钢丸种类后发出变频信号,控制热处理回火炉的电动机以给定参数运转,确保产品回火质量。系统投入实际应用后提高生产效率,达到年产3万t目标。 The use of equipment and the characteristics of the sorting process to achieve the automatic classification of steel shots, the optimization and follow-up of the time waiting between the problems. Introduced s7-200 PLC in the two parts of the integrated connection of the specific application process. After the PLC determines the priority according to the signal detected by the sensor, it controls the valve opening and closing of the steel shot hopper valve, and at the same time identifies the type of steel shot and sends a frequency conversion signal to control the motor of the heat treatment back to the furnace to run with given parameters to ensure the tempering quality of the product . System put into practical application to improve production efficiency, reaching an annual output of 30,000 t target.