Cast copper electric heater technical characteristics
III. Usage precautions:
1. The working voltage must not exceed 10% of the rated value; the relative humidity of 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 wires 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. The metal casting heater 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 degrees Celsius for 5-6 hours, or by reducing the voltage and energizing to heat until the insulation resistance is restored.
4. The metal casting heater should be properly positioned and fixed, and the effective heating area must be in close contact with the heated body. It is strictly forbidden to run without load. If dust or contaminants are found on the surface, they should be cleaned promptly before use to avoid affecting heat dissipation and shortening the service life.
5. The magnesium oxide powder at the outlet end of the electric heating tube should be protected from pollutants and moisture in the place of use to prevent leakage accidents.
Metal casting heater is made of tubular electric heating elements as the heating element, bent into shape, and then placed in a mold with high-quality metal alloy materials as the shell, cast by centrifugal casting into various shapes, such as round, flat, right-angle, air-cooled, water-cooled, and other special shapes. After precision machining, it can closely fit with the heated body. The surface load of the cast aluminum heater can reach 2.5-4.5w/cm2, with a maximum working temperature between 300-450°C; the surface load of the cast copper heater can reach 3.5-5.0w/cm2, with a maximum working temperature between 500-600°C; the surface load of the cast iron heater can reach 4.5-6.0w/cm2, with a maximum working temperature between 550-700°C. The metal casting heater is a high-efficiency heater with uniform heat distribution. The metal alloy with excellent thermal conductivity ensures uniform surface temperature, eliminating hot and cold spots in the equipment. It has the advantages of long life, good thermal insulation performance, strong mechanical properties, corrosion resistance, and anti-magnetic field. By adding insulation devices to the external heat dissipation surface and sintering infrared rays on the internal heat dissipation surface, electricity consumption can be saved by 35%.
II. Main uses:
Widely used in plastic machinery, molds, cable machinery, alloy die-casting machines, pipelines, chemical, rubber, petroleum, and other equipment.
