Process Overview
Centrifugal casting is the only process that uses physics itself as a quality control mechanism. As the mold spins at 300–3,000 RPM, centrifugal forces up to 100G push molten metal outward against the die wall while driving gas bubbles, slag inclusions, and low-density impurities toward the inner bore — where they can be machined away. What remains is a dense, clean outer structure with mechanical properties that exceed static castings by 15–25%. This makes centrifugal casting the definitive process for pipes, cylinder liners, bearing rings, and pressure vessels where radial strength and density are non-negotiable. Our bimetal composite capability — sequential pouring of two different alloys into the same rotating mold — enables unique combinations like steel outer / bronze inner for heavy-duty bearing applications.
Key Advantages
- Centrifugal forces up to 100G eliminate porosity — density 15–25% higher than static castings
- Impurities self-segregate to inner bore and are machined away — clean outer structure guaranteed
- Bimetal composite capability: combine steel, bronze, nickel alloys in a single component
- Excellent radial mechanical properties — tensile strength and fatigue resistance superior to sand casting
- Weight range 1kg to 2,000kg — diameters from 50mm to 2,000mm achievable
- Cost-effective for cylindrical and tubular shapes — no cores, minimal gating waste
Technical Specifications
Process Flow
Step-by-step overview of our Centrifugal Casting workflow — from raw material to finished casting.
Typical Applications
Compatible Materials
Full Technical Specifications
Comprehensive process parameters for Centrifugal Casting — based on ISO 8062 / GB/T 6414 standards.
| Parameter | Value / Range | Notes |
|---|---|---|
| Tolerance Grade (ISO 8062) | CT7 – CT9 | OD tolerance; bore machined to closer tolerance |
| Dimensional Tolerance (OD) | ±0.5 mm – ±1.5 mm | Depends on diameter and alloy |
| Surface Roughness (Ra) | 6.3 – 12.5 μm as-cast | Machined bore: Ra 0.8–1.6 μm achievable |
| Diameter Range | 50 mm – 2,000 mm | Horizontal and vertical centrifugal machines |
| Typical Weight Range | 1 kg – 2,000 kg | Large pipes and pressure vessels |
| Centrifugal Force | Up to 100G | Drives impurities to inner bore for removal |
| Typical Materials | Gray iron, ductile iron, steel, SS, copper alloys, nickel alloys | Bimetal composites available |
| Bimetal Capability | Steel outer / Bronze inner | Sequential pouring of two alloys |
| Typical Applications | Pipes, cylinder liners, bearing rings, bushings, pressure vessels | Rotary and tubular components |
| Density Improvement | 15–25% higher than static casting | Impurities segregate to machined bore |
| NDT / Inspection | UT, MT, CMM dimensional report | Hydrostatic pressure test available |
| Lead Time (production) | 20 – 40 working days | Depends on diameter and quantity |
* All values are indicative. Actual achievable parameters depend on part geometry, alloy, and tooling design. Contact our engineers for drawing-specific assessment.