The Study Of Control Technology Application To Walking Reheating Furnace

This article put forward the useful and easily-realizable and reliable control arithmetic and the way to realize the basic automatic control system of walking reheating furnace, on the basis of including the theory of process control, technology of DCS and PLC, communication , fieldbus, and in term of the characteristic of the walking reheating furnace, also by using the electrical and instrument control equipment with the practical and reliable technology and advanced quota.We can realize the instrument control system and electric control system By using DCS and PLC. The control system of reheating furnace is devided torol furnace area PLC control system, roll PLC control system and reheating furnace DCS control system. The controller of instrument and electric connect to the server of the operater station by the controlnet, by using DCS and PLC, the technology of network and fieldbus technology to combine the process control system and process computer, intelligent instruments, drive system to realize the instrument and electric controll in one system.The thesis emphasis the way and arithmetic of the key equipment of walking reheating furnace: loader machine, unloader machine, walking system, series transfer roll, control system of burning and tracking of steel billet,. Make use of the system, we can carry out the function of transferring measuring and weighting, detecting, loading and unloading tracking the steel billet, we can control process of burning and exchange data each other to track the steel billet and manage the process over all of product line. Goals of reheating furnace's producing process such as high yield, low consuming and pollution, automatic operating mode are achieved. The system designed the interface for level 2 computer, in order to realize the level 2 automatic process control system.