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Cooling Jackets for Barrel Heaters

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Cast-in cooling jackets for extruder barrel heaters are manufactured for specific applications that do not require heat but require a uniform cooling source, which can be controlled. The cooling jacket typically is 1" thick with ½" cooling tubes that are either stainless steel or Incoloy® depending on the application. As with other liquid cooled cast heater designs, all standard cooling tube terminations are available.

Cooling Jackets for Barrel Heaters Specs & Options

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Cooling Tube Terminations - view images

Type C1 Termination - Plain cooling tube cut to standard 3" length extending from the heater. Specify longer length if required.

Type C2 Termination - 37° Flare nut fitting allows for cooling tube connection to a compression fitting.

Type C3 Termination - Compression fitting mounted directly to cooling tube provides seal for high pressure hook up. Available in standard 3/8 " and 1/2 " NPT. 3/8 " Dia. #55-0010 1/2 " Dia. #55-0011.

Type C4 Termination - Brazed seal with locknut provides an effective seal for high-pressure applications. Mating fittings available upon request.

Type C5 Termination - Brazed angle fitting mounted directly to the cooling tube with right angle 3/8 " FPT as standard. Specify L dimensions.

Type C6 Termination - Cast-in fitting with standard 5/8 " FPT for quick installation of cooling lines with no additional fittings.

Cast In Heater Special Services

  • Radiograph (X-ray): Confirmation of internal element configuration and casting soundness available through x-ray.
  • Plating/Coating: Electroless nickel plating, anodize, teflon® coatings and special blasted surfaces are available per customer specifications.
  • Pressure Testing: High pressure leakage testing is done in-house per application requirements.
  • Heat Treating: Stress relieving and aging through heat treating available as required.
  • CMM Inspection: Coordinate Measuring Machine used for precision quality control of tight tolerance machining requirements.
  • Helium Leak: Detect microleakage from casting body.
  • Temperature Uniformity: Conform heat uniformity across the finished surface.
  • Class 1000 Clean Room: Clean room assembly and packaging per class 1000 standards.
  • Solidworks 3D Modeling: Engineering software provides 3D models of proposed or existing product designs.
  • Custom Packaging: Customer specific packaging for delicate surfaces, large multi-product shipments, or long term storage.
  • Life Cycle Testing: Life cycle test chamber for longterm testing of uniformity and performance characteristics.
  • Material Certification: Precise records and certifications on materials which require traceability to specific standards.
  • Sensor Calibration: NIST traceable calibration lab for calibration and certification of any temperature sensor requirements.
  • FEA Analysis: Preview of proposed design constructions using FEA analysis.

Installation & Maintenance Guidelines for Cast Heaters

  • Always ensure that cast-in heaters are properly mounted to the application to avoid warping of flat heaters or "walking" of barrel heaters. After the initial start-up, retighten the heater mounting system to assure complete surface contact. Periodically check the bolts or straps and tighten as required maintenance.
  • Tighten all liquid cool connections securely to avoid rupture from internal steam pressures. Cast in C6 fittings or brazed connections are the most reliable. Properly maintain these connections to avoid leaks that will destroy the heater. Do not operate heating and cooling simultaneously to avoid thermal shock of the cooling tubes.
  • It is recommended that water used for liquid cooling applications be treated to avoid corrosion and hard water deposits that will clog the cooling tubes over time.
  • Install proper temperature control prior to operation of the heaters to ensure protection from over-temp situations which may damage the heater or equipment. Periodically changing temperature sensors is good preventive maintenance.
  • Electrical terminals must be properly insulated and made tightly to ensure safe operation. All heater installations must be properly grounded. All electrical terminations must be made per applicable Electrical Safety Codes and O.S.H.A. regulations.
  • Do not operate the heaters outside of the voltage and temperature of the design. This will cause the heaters to fail.
  • ALWAYS disconnect the electrical power to heaters prior to service.
 

Cooling Jackets for Barrel Heaters Downloads

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Cooling Jackets for Cast-In Barrel Heaters – 397KB