Gravity Die Casting

Gravity die casting is a casting process in which molten metal is poured into a permanent mold and fills the cavity under the force of gravity, where it solidifies naturally to form the casting.

Compared with pressure die casting, gravity die casting molds generally offer a longer service life. The process can produce components with complex geometries and localized thick sections. Since the metal molds are reusable, it is suitable for batch production. Castings produced by this process feature good surface finish and require relatively small machining allowances. However, due to its lower production efficiency, the process is generally used for small- to medium-volume production of components with wall thicknesses greater than 5 mm.

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Gravity Die Castings
  • 300 kg Induction Furnace300 kg Induction Furnace
  • Pump BodyPump Body
  • Disc ConnectorDisc Connector
  • Pump BodyPump Body
Material Options

The gravity die casting process is suitable for the production of aluminum alloy and copper alloy components. Among these materials, aluminum alloys are the most commonly used in industrial production.

  • Aluminum Alloys: ZL101, ZL102, ZL104, ZL109, ZL201, ZL203, ZL301, ZL302, ZL401
  • Copper Alloys: ZCuSn10Pb1, ZCuZn38, ZCuAl10Fe3
Technical Parameters
Dimensional Tolerance CT7-CT8 (in accordance with ISO 8062; wall thickness tolerance: CT9)
Surface Roughness Ra 6.3～12.5 μm
Minimum Wall Thickness 5mm
Part Weight Range 0.5kg – 50kg
Typical Maximum Part Size Length ≤800mm × Width ≤600mm
Processes
  • Mold Preheating
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  • Coating Application
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  • Mold Closing
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  • Molten Metal Pouring
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  • Gravity Filling
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  • Solidification and Cooling
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  • Mold Opening and Casting Removal
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  • Gate and Riser Removal
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  • Grinding and Finishing
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  • Heat Treatment (Optional)
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  • Quality Inspection and Storage
Why Choose HCPC?
Why Choose Huacheng
  • More than 30 years of manufacturing and export experience, with extensive knowledge of international logistics and industry-specific technical standards.
  • Full support from tooling design and sample development through to high-volume production, precision machining, and surface treatment.
  • A strict ISO 9001 quality management system, backed by CMM (coordinate measuring machine) inspection and non-destructive testing (MT, RT, PT).