Metal casting heater uses tubular electric heating elements as heating body, bent into shape, and then cast with high-quality metal alloy materials as shell 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 be closely attached to the heated body. The surface load of cast aluminum heater can reach 2.5-4.5w/c㎡, working temperature between 300-450℃; cast copper heater surface load can reach 3.5-5.0w/c㎡, working temperature between 500-600℃; cast iron heater surface load can reach 4.5-6.0w/c㎡, working temperature between 550-700℃. 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 of the equipment. It has advantages such as long life, good thermal insulation, strong mechanical properties, corrosion resistance, and anti-magnetic field. Adding insulation device on the outer heat dissipation surface and sintering infrared on the inner heat dissipation surface can save 35% electricity.
Main Applications
Widely used in plastic machinery, molds, cable machinery, alloy die-casting machines, pipelines, chemical industry, rubber, petroleum and other equipment.
Precautions
1. The working voltage shall not exceed 10% of the rated value; the relative humidity of the air is not greater than 95%, and there is no explosive or corrosive gas.
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. 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 baked in an oven at about 200°C for 5-6 hours to restore normal. Or reduce the voltage and energize 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 closely attached to the heated body. No dry burning is allowed. If dust or contaminants are found on the surface, clean them in time before use to avoid affecting heat dissipation and shortening service life.
5. The magnesium oxide powder at the outlet end of the electric heating tube should avoid contamination and moisture infiltration in the use site to prevent leakage accidents.
Specifications
1. Cast aluminum, cast copper heater: The tubular electric heating element is cast in aluminum or copper solution and pressed into different shapes of heaters. Mainly used for plastic machinery, ovens, water heaters, pipelines, and heating of non-corrosive liquids.
2. Cast iron heater: The electric heating tube is cast in iron solution, widely used in die-casting machines of lock, zipper, hardware, toy and other factories. Nozzle heater, also known as gooseneck heater. There are two types: one casts the electric heating tube in red copper, the other casts it in iron.
3. Other various special electric heating castings: Customized electric heating castings of various specifications according to customer needs.
High-temperature resistance wires are evenly distributed inside the high-temperature resistant stainless steel seamless tube, and the gaps are densely filled with crystalline magnesium oxide powder with good thermal conductivity and insulation performance. This structure is not only advanced, with high thermal efficiency, but also uniform heating. When current passes through the high-temperature resistance wire, the heat generated diffuses through the crystalline magnesium oxide powder to the metal tube surface, and then transfers to the heated part or air to achieve the purpose of heating.
