Twin-screw extruder heating method

At present, the twin-screw extruder uses motor heating, a relatively clean, effective and easy-to-control heating method. That is, the electric heater (with resistance wire inside) is packaged on the machine, after the power is heated, due to the heat conduction, convection, radiation together to heat the material and make it melt. The current heaters usually include Mica heaters, ceramic heaters, cast aluminum heaters, cast copper heaters, cast iron heaters, etc. There are some differences in the effectiveness of various heaters. Mica heaters are low in cost and easy to process, the application life is short; The number of ceramic heaters and iron heaters is relatively short, which is longer than that of Mica heaters. Cast aluminum heaters and copper shovel heaters are most commonly used because of their high thermal efficiency, good thermal insulation performance and long service life.