Gravity die casting and low pressure die casting all belong to metal mold casting process, both are used to produce aluminum castings. They all use metal mold for manufacturing, typical used mold material is H13 in China.
Gravity die casting and low-pressure die casting process can produce the same grade of cast aluminum alloy. Besides, these two aluminum casting methods have similar features in pouring temperature, mold opening time, and mechanical properties (density, strength, etc).
Gravity die casting and low-pressure die casting are still different in forming principle, aluminum casting structure, labor intensity, batch quantity, development time and other aspects, as shown in the following figure:
| Process | Working Principle | Part Structure | MOQ | Development Time | Mold Cost |
| Gravity Die Casting | Use Gravity | Complex & Diverse | 200pcs | Short | Lower |
| Low Pressure Die Casting | By Air Pressure | Single | 5,000pcs | Long | Higher |
By comparison, gravity die casting is more suitable for the production of aluminum castings in small batch and short development cycle. While low pressure die casting is suitable for manufacturing aluminum castings in larger quantities. If the wall thickness of the aluminum part is thin, the structure is suitable for low pressure die casting process.
Typical aluminum low-pressure die casting process is the production of the car wheel ring, the structure of this aluminum casting is very suitable for the structure characteristics of low-pressure die casting process, and the production is very large, there is enough time to make the improvement of production technology.
The typical aluminum gravity die casting process is the production of industrial robot castings. These aluminum castings have small production batch, high product quality requirements, short development cycle, and need to produce high-quality aluminum castings without any porosity and sand holes in a very short time.
CFS Foundry is the top leading aluminum casting manufacturer in China, we can meet your demands on both gravity die casting and low pressure die casting processes. Any inquiry on aluminum gravity die casting or low pressure die casting, pls feel free to contact our foundry!
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