Air heater is a kind of electric heating element produced at the price of modern science and technology. It is suitable for all kinds of plastic, chemical, chemical fiber machinery, food packaging, wire and cable machinery, hot air duct, oil pipeline and other matching heating appliances and electric heating accessories.

The series of metal electric heaters are divided into three categories according to the basic and insulating media

A. Metal mica heater: it takes high medium nickel alloy 2080 heating wire as heating body. It is made of natural mica or man-made mica board as insulator. According to the user, the outer layer adopts different metal plates as the conduction heating body, and the heating ring, plate and other various shapes of heaters are made by mechanical processing. The normal power of surface load should be 2.5 ~ 3W / cm2. According to the required heating temperature, customers should adopt automatic temperature control system to ensure the service life of the heater.

B. Metal casting electric heater: it takes metal tubular electric heating element as heating body. According to the specification and shape requirements of the heating body of the user, the heating body is bent and molded into the mold to form various shapes of cast aluminum, cast copper and cast iron heating bodies. This product is an ideal heating product in plastic industry. This product has fast heating. It has the advantages of uniform heating, good thermal conductivity and long service life. According to the needs of users, the normal working power of casting heater surface load is 2.5 ~ 3.5 w / cm ~ 2, and that of cast copper and cast iron heater is 4.0 ~ 6.0 w / cm ~ 2. Special specifications can be processed according to user's drawings.

C. tubular electric heating element (metal tubular heater): the metal tubular heater is made of metal shell (titanium steel, stainless steel, carbon steel, copper and other metal pipes), and the nickel alloy heating wire is used inside, which is spiral along the middle of the pipe. According to the required voltage, power and resistance quality of the heater. The magnesium oxide tubes and magnesium powder with good insulation and thermal conductivity of high-purity battery are evenly distributed. A series of electric heating machines, such as shrinking tube furnace, hot spot furnace, drying equipment, hot pressing forming, food machinery, barbecue and household appliances, are used. The normal service load of the surface is 4.0 ~ 8.0 w / cm2.