Introduction to the requirements of heating eleemnts for internal heating wires
The requirements of the heating eleemnts for the internal heating wire are as follows:
● Sufficient heat resistance, that is, no oxidation or little oxidation at high temperatures;
● It has certain mechanical strength at high temperature;
● Higher than resistance, otherwise the electric heating tube has to be made very long, which is not convenient for installation;
● The smaller the temperature coefficient of resistance, the better;
● Good processing performance, can be processed into linear, ribbon or spiral, and has good welding performance;
● long-term work without aging;
● The material source is based on domestic and the cost is low. Of course, the electric heating tube with high requirements can use imported heating wire.