Sealing materials: High-temperature electric heating tube is sealed with silicone oil and can withstand 700 °C high temperature. The disadvantage is that liquid and moisture can not be completely prevented from infiltrating. Silicone sealing is used when the electric heating tube is used at medium and low temperatures, which can prevent liquid from infiltrating into the tube from the terminal. The disadvantage is that it can only withstand the working temperature of 220 ° C and the instantaneous temperature of 250 ° C. The Epoxy seal is used when the electric heating tube is used at a low temperature to prevent moisture and liquid from penetrating. The disadvantage is that it can withstand only a working temperature of 150 ° C and an instantaneous temperature of 185 ° C.
Due to process factors, the double-headed electric heating tube has 5cm non-heating zone at both ends due to process factors. If it is necessary to lengthen the non-heating zone, it can be notified before the ordering. If the watt density is high, the finned heat sink can be added. Increase heat dissipation.
The pipe wiring method is divided into two-head electric heating pipe wiring method. The Y-△ type wiring is a three-phase voltage, and the series and parallel wiring are single-phase voltages. When wiring, please select a suitable heat-resistant wire according to the temperature of the wiring area. The terminal needs to be locked to avoid leakage of the machine and burnout of the electric heating tube.