Research And Design Of Temperature Control System For A Bright Copper Tube Coll During Annealing In Pit Furnace

In cold working process, the strength of the material is increased and the plasticity index is reduced until it is destroyed. To enable it to continue cold processing, must use the final annealing to eliminate stress, the metal structure recrystallization occurs, thus reduce the strength and plasticity can be improved, the microstructure and property of the process called "recrystallization annealing.The in a copper coil tube annealing furnace background, of well type annealing furnace structure characteristics and technological process were analyzed, according to the well type annealing furnace heating characteristics and equipment design scheme of control. Early on the temperature field in the well type annealing furnace were a full range of detection, temperature detection before first design a bus based multi channel temperature measurement instrument, using a thermocouple as the temperature sensor,design temperature measurement board, PC using Lab VIEW programming. According to the measured data, the distribution of temperature in the furnace is obtained, and the problems and shortages of the annealing furnace are obtained. According to the data and the conclusion of this annealing furnace for upgrading.First, hardware scheme with the new Siemens S71500 based controller, to facilitate future system upgrades, and to the Kunlun Tongtai configuration touch screen as man-machine interface, in convenience for workers of operation at the same time can also be visually display the furnace all data.Secondly, software application totally integrated automation portal(referred to as TIA portal, the Chinese referred to as botu) software was compiled to carry on the programming for Siemens s7-1500. Application of MCGS configuration software on the touch screen programming.Again, in addition in control theory, this paper study the PID control parameters auto tuning method of design for well type annealing furnace temperature control system of fuzzy PID controller, improves the deficiency of the existing control system, improve the accuracy of the original control system, stability, quickly and anti-interference ofAt the same time, the communication between PLC, touch screen, industrial control computer and other equipment is realized by the industrial network module and the technology base.