Aluminum Centrifugal Castings

Alloy: Wrought equivalent 6061-T6
Application: Shell for satellite housing.
Why centrifugals? High material integrity and strength are required combined with specialty finished machining. Part is finished using sate of the art 5-axis machining.

Johnson Centrifugal Technology (JCT) combines aluminum centrifugal technology with forging alloy design to produce high quality wrought equivalents that match the chemistry and mechanical properties of AL 6061 T-6, 7075, 5252 and many other wrought and cast aluminum alloys. Our sophisticated lab controls the individual elements within the alloys at a rate much tighter than conventional forging and plate stock.
Common applications for aluminum centrifugal castings include:

  • Medical imaging aluminum components. Detector and source support gantry rings for the medical imaging industry. Centrifugals are meeting the demand for cost-effective, residual stress-free components in 6061-T6 condition.
  • Semiconductor aluminum components. Vacuum-tight chambers with no defects and no contamination. JCT components meet the most stringent industry standards for pumpdown time and rate of rise. Operating vacuum pressure from 10-9 through 10-15 are common operating results with JCT centrifugal aluminum.
  • Instrument housings for underwater and space applications. The structural integrity of centrifugal castings ensures a leak-proof structure. 6061 AL can be selected for its weldability for further fabrication and anodizing response, as can 7075 and A771 for their high strengths.
  • Gas Turbine Components:
    Alloy: Wrought equivalent 6061-T6
    Application: Consumer products forming rolls, printing rolls
    Why centrifugals? Application demands the fine uniform grain structure that rapid solidification under pressure provides. Wrought chemistry and low residual stress translate into extreme dimensional stability.
    JCT Centrifugally made Gas Turbine Components provide superior quality to sand casting; no porosity. Parts include: Blade Rings, Vane Carriers, Seal Rings, Packing Seals, Labyrinth Seals, Labyrinth Rings, Transition Seal, and Oil Deflectors.
  • Seals for power generation. The uniformity of grain structure ensures a stress free component suitable for tight tolerance seal ring components. Most often produced in A356, A850.1 or A771 and other aluminums.
  • Coolers for plastic extrusion equipment.Centrifugals produced in the 6061 family with integral cooling tubes have reduced machining time and ensure a leak-proof cooling system.
  • Microwave and radio astronomy collectors and support components. Produced cost effectively in high strength wrought equivalents.
  • Forming and conveyor components for the paper and flexible packaging industry. Rely on the defect-free structure of centrifugals. Alloys from A356 to 6061 and 7075 are the choice for these demanding applications.
Alloy: Wrought equivalent 6061-T6
Application: Waveguide for radio space astronomy.
Why centrifugals? High material integrity and strength are required combined with specialty finished machining. Waveguide collimators are finished to .125 inch (4mm) thickness.
Alloy: Wrought equivalent 6061-T6 with integral stainless cooling passages
Application: Process chambers for the medical and semiconductor market
Why centrifugals? In service under ultra-high vacuum, the fine grain structure of a centrifugal minimizes pump-down cycle times. Uniformity of grain structure combined with clean metal technology enable a wide variety of protective anodized coatings to be specified.

JCT produces proprietary materials that are carefully designed to meet or exceed wrought product specifications. Some of our proprietary alloys are chemical twins of common wrought materials. These twins provide product properties and performance and are ideal for use when mated through welding or assembly with wrought products. Virtual identical chemistry to wrought products assures compatibility within your design.

Alloys JCT commonly pours are: the entire 6061 family (including T5, T6 and custom tempers), 7075, 5252, 3003, 711, 713, 771, 356 primary and secondary, 356 T-6, 319, 535, 850.1, 852, B443, C355, 242, A707, 2024, 7075 T-6, 7075 T-7 and 8011.

Other grades can be produced at JCT. Please contact us for help in producing your exact chemistry requirements.

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