Centrifugal Castings with MetSource
The Centrifugal casting process delivers product of very high material soundness and material properties, and thus is the technology of choice for applications requiring the most stringent of product reliability.
In the centrifugal casting process, molten metal is poured into a spinning die. The die can be spinning either on a vertical or horizontal axis depending on the configuration of the desired part. Ring and cylinder type shapes are cast vertically; tubular shapes are made with the horizontal centrifugal process. Either process may be used to produce multiple parts from a single casting. External structures and shaping can be cast in place to significantly reduce post-processing including machining or fabrication.
Because of the high g-forces applied to the molten metal in the spinning die, less dense material, including impurities, “floats” to the I.D. where it is subsequently removed by machining. Solidification is managed directionally under pressure, from the O.D. to the I.D., avoiding any mid-wall shrinkage, leaving a defect-free structure without cavities or gas pockets.
How It Works:
- Directional solidification of sound metal progresses from the outside toward the bore.
- Oxides and impurities are forced inward; metal is forced centrifugally to the outside.
- Impurities are concentrated in the bore; the centrifugal is completely solidified.
- Impurities are removed by machining, resulting in a defect-free structure.
Centrifugal Casting Size Capabilities:
- Diameters up to 60” OD
- Lengths up to 432”
- Non Ferrous and Carbon Steel weights up to 80,000 lbs.
- Stainless Steel weights up to 135,000 lbs.
- Diameters up to 180” OD
- Non Ferrous, Carbon Steel and Stainless Steel weights up to 34,000 lbs.
Vacuum cast Centrifugals
- 18” x 42” diameter
- Weights up to 800 lbs.
- Tolerances: +/- 0.060” As cast
- Surface Finish: 300 – 500 RMS As cast
- Ferralium® 255
- CD3MN (4A)
- CE3MN (5A)
- CD4MCu (1A)
- CD4MCuN (1B)
- CD3MWCuN (6A)
- 15-5PH (CB7CU-2)
- 17-4PH (CB7CU-1)
Heat Resistant Stainless
- ASTM A297 H-series
- Specialty Heat Resistant formulated by application
- Inconel® 617
- Inconel® 625
- Inconel® 718
- Incoloy® 825
- ASTM A494 C-series
- AMS 4880
- AMS 4881
Copper – Nickel
Nickel – Copper
ASTM A494 M-series:
Nickel – Silver
- Bearium® B-4
- Bearium® B-8
- Bearium® B-10 and B-11
Ferralium® is a registered trademark of Langely Alloys for a super duplex stainless steel alloy
Incoloy® is a registered trademark of Special Metals Corporation for a family of nickel based alloys
Inconel® is a registered trademark of Special Metals Corporation for a family of austenitic nickel-chromium based superalloys
Bearium® is a registered trademark of MetalTek International
Typical Centrifugal Products:
- Accumulator Tubes
- Bushings for every Industry
- Jet Engine Compressor Cases
- High Temperature Furnace Tubes
- High Temperature Furnace Rolls
- Centrifuge Hubs and Cages
- Naval Shaft Sleeves and Propeller Hubs
When to use Centrifugal Castings:
- Symmetrical parts that can rotate on an axis
- Sand Casting (Static casting) material properties are inadequate
- Centerline shrink is an issue using other casting processes
- Limited I.D. features
- Large parts, up to 135,000 lbs or more
- Cylindrical parts requiring near net shaping
Centrifugal Quality Standards
10CFR PART 50 APPENDIX B
(Pressure Equipment Directive)
We also strictly adhere to customer-specific standards or requirements
Do you have a complicated machined hog-out or fabrication that may lend itself to conversion to an alternate process? Nearly all of MetSource’s success stories are centered around converting a product from one process or multiple processes to a streamlined manufacturing process that improves the product quality, cost and/or lead-time.
Material Process Selection
Do you have a part design but want a Solutions expert to advise optimal process to produce your part? Subtle changes in part design can optimize process manufacturability to reduce cost, increase part quality and / or increase throughput.
Do you want to speak to a Metallurgist regarding a part and environment to help with material selection? Alloy selection can greatly affect overall cost and part manufacturability.
On-Site Visit and / or Phone Consultation
Do you wish to have a MetSource Engineer call or visit you to discuss a particular application?