Resistance wire wound heater
Resistance heating wire heating coils are commonly used in some low-end equipment or non-standard equipment, and have basically been eliminated.
Stainless steel heater
Stainless steel heaters can be easily made into different shapes and have a wide range of applications. The disadvantage is that each square centimeter can only achieve a power of about 2.5w. If the power is too large, it will burn quickly and cannot meet the requirements of high-power heating.
Cast aluminum heater, cast iron heater, cast copper heater
This type of heater is generally used on precision plastic machines such as injection molding machines, wire drawing machines, blow molding machines and other equipment that require little heating power but high service life and appearance requirements.
Ceramic block heater
It is often used in granulation host equipment that contains a small amount of water and requires a large amount of electric auxiliary heating power.
Infrared radiant heater
The principle is to change the layout space of the heating element so that more heating elements can be installed, and then use the principle of combining heat reflection and radiation to heat the barrel, in order to minimize the heat loss to the outside air, on the surface of the heating element There is also a thicker insulation layer. Infrared high-power heaters are usually used in equipment for wet granulation of soft materials with heavier water. The cost is higher and the requirements for heater material quality are also higher.