The DJR-320 ceramic electric heating ring uses a combined structure of ceramic heating elements and a metal outer shell, suitable for barrel heating of injection molding machines, extruders, pelletizers, and other equipment. Compared with cast aluminum electric heating rings, this product has different performance characteristics under high-temperature working conditions, and procurement personnel can compare and select models based on specific needs.
Cast aluminum electric heating rings conduct heat quickly and have high mechanical strength, but their long-term working temperature generally does not exceed 500°C. The DJR-320 ceramic electric heating ring can reach a working temperature of 700°C, providing adaptability in process scenarios requiring higher heating temperatures. The ceramic ring has relatively low thermal inertia and a relatively rapid heating response, but its insulation performance is inferior to ceramic fiber insulation structures, its surface temperature is higher, and heat loss is relatively greater, so it needs comprehensive evaluation in energy-sensitive applications.
This model supports 220V or 380V operating voltage, and the power can be customized according to barrel dimensions, with a common range between 1.5kW and 4.5kW. During installation, it is necessary to ensure good contact between the inner wall of the heating ring and the outer wall of the barrel to avoid local overheating. The wiring terminals use ceramic insulating bases, and the temperature resistance grade matches the heating element.
The DJR-320 is suitable for the barrel heating section of plastic machinery such as injection molding machines, extruders, and pelletizers. When purchasing, the working temperature, barrel diameter, required power, and voltage must be clearly specified. If the working conditions involve corrosive gases or severe vibration, it is recommended to evaluate protective measures or choose other structural forms. Compared with cast aluminum rings, this product is more suitable for medium- and high-temperature heating needs, but attention must be paid to the impact of surface heat loss on energy consumption.
