Heating Rod - Heating Tube – Electric Heating Tube Usage - Lifespan
Molds are widely used in the machinery industry, and their usage efficiency is often highly demanded. As a key component, the quality and performance stability of the heating rod are of great importance. Industrial mold heating tubes account for about 30% of the sales of all electric heating tubes. Facing a huge demand market, various problems arise. The main issue is how to correctly view the damage of mold heating tubes during use, which not only directly affects the economic and reputational interests of users and producers. It is necessary to properly organize and analyze several common causes of damage to normal mold heating tubes and strengthen precautions.
According to the analysis by technicians, the main causes of damage to mold heating rods are as follows (for reference only).
1. Tightness between mold hole diameter and mold single-head heating rod. During use, single-head electric heating tubes often experience rapid heating and poor heat dissipation, causing the external stainless steel tube to become blackened, oxidized, and deformed. This leads to the internal heating element - electric heating alloy wire (NI80Cr20) melting due to high-temperature dry burning, shortening the lifespan of the single-head electric heating tube. Therefore, a good single-head electric heating tube not only requires high production quality but also demands the mold material and processing hole diameter (the closer the hole diameter to the tube diameter, the better). A suitable hole diameter not only facilitates the replacement of the single-head electric heating tube but also promotes heat conduction between the two, thereby extending the service life of the heating tube itself.
2. Whether the vibration of the working environment is considered during the design of the heating tube. Before designing and producing the mold single-head heating tube, we also need to consider the vibration of the working environment. If the vibration is significant, the heating wire inside the heating tube should use nickel-chromium wire.
3. Control of working temperature. When the mold single-head heating tube is working, temperature control is also crucial. Once the temperature is not controlled, it can cause the external stainless steel tube to become blackened, oxidized, and deformed, leading to the internal heating element - electric heating alloy wire melting due to high-temperature dry burning, shortening the lifespan of the single-head electric heating tube. Generally, the temperature is controlled between 200-300°C.
The above are the points that need attention when designing and customizing molds and during the use of molds, in order to extend the mold heating tube lifespan. In fact, there are many other working environment factors in life. I hope this discussion on several issues of easy damage to mold heating tubes can be helpful to everyone. If you need more accurate consultation on electric heating tube products, heating tube products, mesh belt products, etc., please feel free to call.
