The problem of short circuit between the leads of the single head tube

1. The distance between the two holes of the lead wire is too close.

2. The location of the heating zone has moved to the lead-out port and is exposed to the air.

3. Excessive temperature is a sufficient and necessary condition for short circuit caused by the rated voltage of the two lead wires.

4. When in use, the aperture of the mold hole is horn-shaped. This is due to the defect of the module drilling process, which affects the heat conduction.

5. There is powder loosening at the end of the lead wire at the nozzle, which affects heat conduction and air breakdown.