Notes on temperature control of medium frequency electric furnace
Under the influence of the material inlet temperature, material characteristics, production line speed and other factors, the material outlet temperature depends on the output power of the control system. The higher the power, the higher the temperature, and vice versa. The power determines the temperature. Today's editor of IF furnace equipment manufacturer introduces the precautions for temperature control of IF furnace:
In the actual production, the interference of various factors makes the infrared pyrometer inaccurate, such as the change of the radiation coefficient of the heated material, the influence of the environmental light, the smoke generated during heating, and the shaking of the steel wire so that the probe is not aligned with the steel wire center. The uncertainty will cause the control system to oscillate back and forth, and the sampling time of the pyrometer can be appropriately extended to avoid this problem.
The change of the material inlet temperature of the medium frequency electric furnace equipment will seriously affect the material outlet temperature after heating. Because the temperature of the semi-finished steel wire produced by the wire drawing machine is directly affected by the cooling conditions, the worse the cooling effect is, the more heat the steel wire remains, the higher the population temperature of the steel wire entering the medium frequency electric furnace is, so the population temperature is directly affected by the cooling conditions.
Generally speaking, the temperature of semi-finished steel wire is higher than that of air temperature. Therefore, with the change of storage time, the temperature of inner and outer steel wire will be different, so it is necessary to modify the population temperature of the material properly according to the actual situation in production.