1. The tightness between the mold hole diameter and the mold single head heating tube.

During the use of a single head heating pipe, due to its rapid heating and poor heat dissipation conditions, the external stainless steel pipe body of the electric heating is often burnt, oxidized, and deformed, resulting in the internal heating element - the electric heating alloy wire being melted and broken due to high temperature air burning, resulting in a shortened lifespan of the single head heating pipe itself. Therefore, excellent single head heating pipes not only require good production quality, The material and processing aperture of the mold are more required (the closer the aperture is to the pipe diameter, the better, and the aperture error should be controlled between 0.05mm-0.1mm). In addition to facilitating the replacement of a single head heating tube, a suitable aperture also needs to be closely combined with the outer diameter of the heating tube and the mold aperture, which is conducive to the conduction of heat energy between the two, thus extending the heating service life of the heating tube itself.

2. Control of working temperature.

When the single head heating tube of the mold is working, temperature control is also crucial. The power of the heating tube must be within the range of the heating tube. If the working temperature cannot be controlled, it will also cause the external stainless steel tube body of the heating tube to be burnt black, oxidized, and deformed, resulting in the internal heating element - the electric heating alloy wire being melted due to high-temperature air burning, which shortens the service life of the single head heating tube itself. The general control is between 200-300 degree .

3. Does the design of the heating tube consider the vibration of the working environment.