Metal casting heater:
The metal casting heater is a high-efficiency, heat-dividing heater with excellent thermal conductivity. It ensures uniform temperature on the hot surface and eliminates hot spots and cold spots in the equipment. It has the advantages of long life, good thermal insulation performance, strong mechanical properties, corrosion resistance and magnetic field resistance. The external heat dissipating surface is increased by the heat preservation device, and the inner heat dissipating surface is sintered with infrared rays, thereby saving 35% of electricity consumption.
The cast aluminum electric heating plate is a tubular electric heating element as a heating element, and is bent and formed into a mold. The high-quality metal alloy material is used as a casing to be centrifugally cast into various shapes, and has a round shape, a flat plate, a right angle type, an air cooling, a water cooling and the like. Shaped and so on. After finishing, it can be closely adhered to the heated body, and the surface load of the cast aluminum heating plate can reach 2.5-4.5w/cm2, and the maximum working temperature is between 400-500 °C.
The cast copper heater has a surface load of 3.5-5.0 w/cm2 and a maximum working temperature of 600-700 °C.
The surface load of cast iron heaters can reach 4.5-6.0w/cm2, and the maximum working temperature is between 800-850 °C.
Main use: Widely used in plastic machinery, molds, cable machinery, alloy die-casting machines, pipelines, chemicals, rubber, petroleum and other equipment.
Precautions for use:
1. The working voltage must not exceed 10% of the rated value; the relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas.
2. The wiring part is placed outside the heating layer and the insulation layer. The outer casing 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. Avoid excessive force.
3. The metal casting heater should be placed in a dry place. If the insulation resistance is less than 1MΩ due to long-term placement, it can be baked in an oven of about 200 degrees Celsius for 5-6 hours to return to normal. Or reduce the voltage and heat it until the insulation resistance is restored.
4. The metal casting heater should be positioned and fixed, and the effective heating zone must be closely attached to the heated body.
The electric heating pipes produced by the electric heating pipe manufacturers are various. For different electric heating pipes, the performance and the use will be different. In the process of using, some problems should be paid attention to, otherwise the accident will occur. Let us come together. Find out what you need to be aware of:
When heating fusible metal or solid nitrate, bitumen, alkali, paraffin, etc., first reduce the voltage of use, and then increase the rated voltage after the medium is melted.
The positioning should be fixed, and the effective heating zone should be completely immersed in liquid or metal solids. When it is found that there is scale or carbon on the surface of the pipe body, it should be cleaned up and used in time to avoid heat dissipation and shorten the service life.