Cast Iron Heater Equipment Matters for Wide Application
Cast iron heaters feature long life, good thermal insulation, strong mechanical properties, corrosion resistance, and anti-magnetic field advantages. Explosion-proof heaters have explosion-proof marks such as ExdⅡBT4, ExDⅡBT6, ExdeⅡCT6, etc. Cast iron heaters are widely used in plastic machinery, molds, cable machinery, alloy die-casting machines, pipelines, chemical, rubber, petroleum and other equipment.
Cast Iron Heater Usage Precautions
1. The working voltage must not exceed 10% of the rated value; the relative humidity of the air should not be greater than 95%, and there should be no explosive or corrosive gases.
2. The wiring part should be placed outside the heating layer and insulation layer, and the shell should be effectively grounded; avoid contact with corrosive, explosive media and moisture; the lead wire should be able to withstand the temperature of the wiring part and the heating load for a long time, and avoid excessive force when tightening the wiring screws.
3. Metal cast heaters should be stored in a dry place. If the insulation resistance is lower than 1MΩ due to long-term storage, it can be restored by baking in an oven at about 200°C for 5-6 hours, or by reducing voltage and energizing to heat until the insulation resistance is restored.
4. Cast iron heaters should be properly positioned and fixed, and the effective heating area must be closely attached to the heated body. No dry burning is allowed. If dust or contaminants are found on the surface, they should be cleaned promptly before reuse to avoid affecting heat dissipation and shortening service life.
5. The magnesium oxide powder at the outlet end of the electric heating tube should be protected from pollutants and moisture infiltration in the usage site to prevent leakage accidents.
