Electric heaters are heating elements produced using modern technology, suitable for various plastics, chemical, chemical fiber machinery, food packaging, wire, cable machinery; hot air ducts, oil pipelines, and other supporting heating appliances and heating accessories.
Metal electric heater series are divided into three categories based on the base and insulation medium.
A. Metal mica heaters: They use high-dielectric nickel-chromium 2080 alloy heating wire as the heating element. They are wound with natural mica or synthetic mica plates as insulators. The outer layer uses different metal plates as the heat-conducting element according to user requirements, forming heating rings, plates, and other shapes through mechanical processing. The normal surface load power should be 2.5~3 W/cm². Customers should use an automatic temperature control system to ensure the heater's service life based on the required heating temperature.
B. Metal cast electric heaters: They use metal tubular electric heating elements as the heating element. According to the shape and size requirements of the user's heating body, they are bent into shape and then cast into various shapes of cast aluminum, cast copper, or cast iron heating bodies through mold casting. This product is currently an ideal heating product in the plastics industry. It has advantages such as fast heating, uniform heating, good thermal conductivity, and long service life. According to user needs, the normal surface load power of cast heaters is 2.5~3.5 W/cm². For cast copper and cast iron heaters, the normal surface load power is 4.0~6.0 W/cm². Special specifications can be processed according to user drawings.
C. Tubular electric heating elements (metal tubular heaters): Metal tubular heaters use a metal shell (titanium steel, stainless steel, carbon steel, copper, and other metal tubes), with a nickel-chromium alloy heating wire spirally arranged along the center of the tube. According to the voltage, power, and resistance set for the heater, the gaps inside the tube are uniformly filled with high-purity magnesium oxide tubes and powder with good insulation and thermal conductivity. They are used in tube shrinking furnaces, hot spot furnaces, drying equipment, hot pressing forming, food machinery, barbecue, household appliances, and other series of electric heating machinery. The normal surface load is 4.0~8.0 W/cm².
