Cast-In Heater Product Details

Liquid Cooled Cast In Barrel Heaters

Liquid cooled cast-in barrel heaters are the most common cast-in heater designused on plastics extrusion barrels. The liquid cooling tubes run symmetrical to theheater element, which provides a uniform cooling pattern across the body of thecasting. This cooling function dissipates heat rapidly from the cast-in barrelallowing a tight control of the melt temperature during operation.

Air Cooled Cast In Barrel Heaters

Finned air-cooled cast-in barrel heater designs provide effective heating andcooling for plastics extrusion barrels. The fin pattern can be supplied as astandard height of 1" or manufactured to a low profile thickness for smallextruders or applications requiring rapid cooling. This pattern is designed to allowthe optimal airflow around the casting for maximum cooling rates.

Air Cooled Cast In Heaters with Shrouds

Individual shroud and blower systems can be used with finned barrel heaters as self contained systems on extruder barrels. The shrouds are manufactured as cast aluminum with bolt mounting or a hinged clamshell design fabricated from stainless steel . The internal design of throat maximizes the airflow over the finned heater body for rapid cooling.

L-Shaped Square Cast In Barrel Heaters

The "L" shape cast-in heater design is typically used on square and rectangularextruder barrels, which utilize a twin, screw design. In most cases, the highoperating temperatures in these applications require these cast-in heaters to beconstructed of a bronze alloy, however aluminum alloys are used for applications,which do not require the higher watt densities.

Vent Cut Out Cross Head Die Cast In Heater

Special sections of the cast-in extruder barrel such as a vent or feed throat require custom modifications to fit properly. These Vent/Cutout Cast-In Heatersare designed with element locations that maximize heater performance, but allowfor special machined sections that could not be added to a standard barreldesign.

Heat-Only Cast In Heaters

Although not a common design, heat only cast-in barrel heaters are availableprimarily with the stainless steel mounting strap option. This design is standardly1" thick and can be used with all standard electrical terminations. The cast-inheat only design can be used on piping areas that are typically more difficult toheat such as elbows and joint areas. The cast-in heater can also be cast directlyonto pipe elbows or other areas to produce an integral heated part in specificapplications such as feed pipes or heat exchangers. Designs are available inboth aluminum and bronze alloys

Cooling Jackets for Cast In Barrel Heaters

Cast-in cooling jackets are manufactured for specific applications that do notrequire heat but require a uniform cooling source, which can be controlled. Thecooling jacket typically is 1" thick with ½" cooling tubes that are either stainlesssteel or Incoloy® depending on the application. As with other liquid cooleddesigns, all standard cooling tube terminations are available.