The electrical circuit of the duct electric heater device is relatively complicated and requires a high level of maintenance. As can be seen from the above points, compared with other methods, the electric heater of the air duct has significant characteristics, which is increasingly valued by people.
The electric tubular finned heater of the air duct can be heated in contact with the workpiece, and can be bent, folded, and burned. It is suitable for preheating of various metal components, such as pipes and large containers, preheating in the middle, hydrogen elimination in the middle, and heat treatment of the local production department after welding It has the advantages of fast heating speed, high heat utilization rate, significant energy saving, low labor intensity, safe and reliable use, and convenient operation. It is the most novel and practical ideal local heat treatment heater in the welding industry. The maximum working temperature is 1050 ℃
