摘要
中频感应加热炉控制系统由西门子触摸屏OP17、西门子S7-200PLC、中频感应加热系统等组成。在预应力钢丝及钢绞线生产中,稳定化生产要求恒温控制,特别是在初始开车和工艺调整过程中,钢丝要在速度变动的情况下完成恒温控制,中频加热炉的功率给定就要精确。给出中频加热炉控制框图,分析加热温度与加热功率的控制关系,并就相同温度要求下钢丝不同运行速度与加热功率的关系用五点温度曲线法进行标定,对升速和降速等运行状态调整及钢丝不同线径时的附加功率给定予以说明,控制精度满足生产要求。
The control system of medium frequency induction heating furnace is composed of SIEMENS touch screen OP17, SIEMENS S7 -200 PLC and medium frequency induction heating system etc. When pre-stressed steel wire and steel strand were produced, constant temperature control was required in stabilization production, especially in the process of ini- tial operating and process adjustment, steel wire finished constant temperature control in speed changing, which needs ac- curate given power of medium frequency induction heating furnace. The medium frequency induction heating furnace control diagram is given, the control relationship between heating temperature and heating power is analyzed, the relationship be- tween steel wire different running speed and heating power in same temperature is calibrated. The running state adjustment of raising speed and lowing speed, steel wire different diameter additional power given are illustrated, the control precision meets production requirement.
出处
《金属制品》
2011年第5期70-72,共3页
Metal Products
关键词
中频感应加热炉
功率给定
恒温控制
稳定化处理
预应力钢丝
medium frequency induction heating furnace
given power
constant temperature control
stabilization treat-ment
pre-stressed steel wire
