The heating in the electric heating tube is determined by the resistance wire. The resistance wire is spiral. When the spacing is different, the heating condition will be different. The spacing is close and the heat is high. vice versa. However, the quality of productive technology can cause uneven heating of the electric heating tube.
1. If the resistance wire is not good, after compression, the wire spacing is uneven and then the heating distribution is uneven also.
2. Try to make the resistance heating wire evenly distributed during processing. Pay attention to the wire wrapped. Otherwise, the heating tube will not heat evenly.
3. In the heating pipe, it needs to be filled with magnesium powder in a sufficient amount to make the filling densely in the pipe, and then it is compressed by a contacting pipe machine.