Finned air-cooled cast-in designs provide effective heating and cooling for plastics extrusion barrels. The fin pattern can be supplied as a standard height of 1″ or manufactured to a low profile thickness for small extruders or applications requiring rapid cooling. This pattern is designed to allow the optimal airflow around the casting for maximum cooling rates. Typically the forced air for the cooling function is driven by a shroud and blower system that is an integral part of the extruder, however these cast- in heaters can be utilized with an individual shroud and blower assembly for increased cooling control of the individual heater zones. All Durex cast-in barrel heater designs are available with mounting options of stainless steel locking straps or bolt-on clamping construction. Various electrical termination options are available for the air cooled cast-in heater depending on the application and environmental requirements.
Classification of Electric Casting Aluminum Band Heaters:
Insulation types: Aluminum, brass and iron
Shapes: Band type and flat type
Heating and cooling: Air cooling cast in aluminum/brass heater, cast in water cooling aluminum/brass heater, ordinary cast in aluminum/brass/iron heater
Heating type: Inner heating and outer heating
Features of Electric Casting Aluminum Band Heaters:
TEMPERATURE: Aluminum alloy up to 400℃, brass alloy up to 650℃,
WATT DENSITY: Aluminum alloy - 35 w/sq in on heater elements, Brass alloy - 45 w/sq in on heater elements
VOLTAGE - Up to 480 volts - Single and three phase
ROLLER SIZES - 2" diameter and up. 1-1/2 width and up (in 1/2" increments)
TERMINAL - 1/4 to 20 Post terminals standard
SHEATH - Stainless Steel
MOUNTING COLLARS - 1/4, 3/8, 1/2, 5/8, 3/4Designed Specially for Hot Stamping Efficient
Efficient Heat Transfer
Cast-in heaters can be supplied with cooling tubes & end fitting
Various Heater terminations
Uniform surface temperatures
Applications of Electric Casting Aluminum Band Heaters:
Injection and Blow Mould
Extruders
Moulds & Dies
Packaging machinery
Lab equipments
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