The Design And Implementation Of Full-hydrogen Bell-type Annealing Furnace Process Control System

Steel roll in cold rolling process will produce a work hardening phenomenon which can make it hard and brittle, by annealing recrystallization of steel coil internal organization, rearranged, eliminating cold stress, which will be helpful in plate roll for deep processing. Annealing technology in steel mechanical properties decision plays an important role.With the development of annealing equipment for decades, cold-rolled strip steel annealing step into a new stage, the current commonly used annealing furnace at home and abroad are the continuous annealing furnace and the batch annealing furnace. Shougang Group in the beginning of this century cold preparations,2008May, Shougang cold rolling product to get offline formally put into production, mainly for the continuous annealing products, with continuous annealing control ability and related automatic control knowledge. Full hydrogen bell-type annealing production line, production processes more complicated production process. Cold rolled steel coil in annealing process is all-hydrogen batch annealing production line core production process. Annealing process, high precision control device are to meet today’s high quality product market competition requires a fundamental means. After investigation and careful judgment, Shougang choice construction of full hydrogen bell type annealing furnace production line.This article that from the construction of full hydrogen bell type annealing furnace necessity for rope, in a great deal of bell-type furnace equipment and annealing process on the basis of the data, combined with the PLC programmable logic controller, automatic control theory knowledge, have proposed and based on DCS distributed control designed an annealing process control system, and the system installation, commissioning, final implementation control system function. At present the first batch annealing steel roll steel coil is offline, the automatic control system in Shunyi Shougang cold rolling company have put into use in actual work and have achieved satisfactory effect.