High-pressure casting (die casting) uses 'high speed, high pressure, instant molding.' Molten metal is injected into a mold at very high speed and pressure, where it cools and solidifies rapidly, forming the final part.

Gravity casting relies on 'gravity for natural molding.' Molten metal is poured and fills the mold cavity by gravity alone, then cools and solidifies without external pressure. It's the most traditional casting method.

Centrifugal casting uses 'rotation to create centrifugal force for dense molding.' Molten metal is poured into a high-speed rotating mold. The centrifugal force presses the metal against the mold walls, ensuring a dense, defect-free casting.

Extremely high efficiency: Short cycle times, suitable for mass production.
High dimensional accuracy: Tight tolerances for consistent parts.
Excellent surface finish: Requires minimal post-processing.
Produces complex, thin-walled parts: Can create intricate details.

Good internal quality: Smooth filling prevents trapped gases, resulting in high density.
Lower mold costs: Especially for sand casting, molds are cheap and quick to make.
High flexibility: Suitable for single parts or small batches, regardless of size or alloy.

High density: Centrifugal force pushes gas and impurities inward, creating a dense outer surface.
No need for cores: Can directly produce hollow, cylindrical parts, improving material yield.
Strong filling ability: Suitable for casting alloys with poor fluidity.

High-pressure casting is perfect for mass-producing complex, thin-walled, small-to-medium non-ferrous castings with high surface finish requirements.
Electronics: Phone/laptop casings, heat sinks.
Automotive: Engine blocks, transmission cases, door frames.
Hardware: Toys, zippers, door handles, faucet parts.

Gravity casting is best for medium-to-large castings requiring high internal quality and strength.
Engine parts: Cylinder heads, engine blocks, pistons.
Large machine parts: Lathe beds, large gears, pump bodies.
Other: Complex aluminum and copper alloy blanks.

Centrifugal casting is used almost exclusively for hollow and cylindrical metal parts.
Pipes: Cast iron drain pipes, oil pipes, various rollers and sleeves.
Machine parts: Engine cylinder liners, bearing rings.
Specialty: Composite rollers for chemical reactors.