Contact
- +91 22 49764970 / 66362387 / 66394356
- +91 9819321779
- sales@chetanindustries.com
- chetanindcorp@gmail.com
- M/s. CHETAN INDUSTRIAL
CORPORATION
54-A BHANDARI STREET, 1ST KUMBHARWADA LANE,
MUMBAI- 400004.
CENTRIFIGUAL CASTING
What Is Centrifugal Casting?
Melted metal is poured into a cylindrical mold that is rotating quickly, applying pressure to the molten metal due to centrifugal force from the rotation. This process is known as centrifugal casting.For high-reliability applications such as jet engine compressor cases, petrochemical furnace tubes, military and defense components, and others, centrifugal casting is the preferred metal casting process due to its high material soundness.
Melted metal is poured into a spinning die during the centrifugal casting process. Depending on the part's configuration, the die can rotate on a horizontal or vertical axis. Vertical centrifugal casting is used to create ring and cylinder shapes, whereas horizontal centrifugal casting is used to create tubular shapes.Multiple parts can be produced from a single casting using either process.
In the spinning die, less dense material like oxides and impurities "float" to the inner diameter (I.D.) where they concentrate and are machined away due to the high centrifugal force applied to the molten metal. In order to prevent mid-wall shrinkage, solidification is controlled directionally under pressure from the outer diameter (O.D.) to the I.D.As a result, there are no cavities or gas pockets in the structure.
Net Shaped Centrifugal Casting
Additionally, we offer near-net-shaped and net-shaped centrifugal casting, which are hybrid processes that, when compared to centrifugal casting alone, can yield lower machining costs and more precise O.D. detail. When compared to traditional castings, fabrications, or forgings, both offer quantifiable advantages.
Net-Shaped Centrifugal Casting
Net-shaped centrifugal casting combines centrifugal casting and investment casting. A ceramic shell is made with a wax mold and then put inside a vertical die to centrifugally cast the part.Lower machining costs more than make up for the relatively high upfront tooling cost in medium to high volume applications.
Near Net-Shaped Centrifugal Casting
Similar to net-shaped centrifugal casting, near-net shaped centrifugal casting centers the part using a sand mold. Compared to net-shaped centrifugal casting, tooling costs are lower, but additional machining can be necessary to achieve the necessary level of O.D. detail. For low to medium volumes, near net-shaped centrifugal casting is therefore more suitable.
Vacuum Centrifugal Casting
When minimizing oxygen exposure is essential, vacuum casting is employed, and it's frequently used to maximize the benefits of high-performance alloys like 718, 625, GTD222, and Rene77. Compared to other processes, casting in a vacuum allows for greater flow rate and temperature control by drawing molten metal into the die and limiting the effects of oxidation. High-reliability parts with tight tolerances and consistent sound quality are produced by vacuum casting and are frequently utilized in applications and aerospace. MetalTek can pour weights up to 800 pounds (364 kg) and vacuum parts up to 18" x 42" (455 mm x 1,070 mm).
When To Use Centrifugal Casting
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Symmetrical shapes
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Sand casting material properties are inadequate
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Centerline shrink is an issue using other casting processes
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Limited I.D. features
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Large parts of up to 135,000 lbs. (61,235 kg) or more are needed
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Net-shaping: more precise O.D. detail and lower machining costs are desired