What is the difference between gravity casting and die casting?

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2024-03-24


In the metal casting industry, gravity casting and die casting are two common production processes. Although they all use the liquid state of metal to fill the mold, there are some obvious differences in the specific process and application areas. So, what is the difference between gravity casting and die casting?

Gravity casting is a casting method based on free fall. In the gravity casting process, the metal liquid substance through its own gravity The plastic heater continuously flows into the mold cavity, fills the entire mold, and then removes the mold after curing to form the final product. This method is mainly suitable for making large and asymmetrical parts, such as cast iron building components. Gravity casting process is simple, easy to control, wide applicability.

Die casting is a method of forming by applying high pressure to a metal liquid substance. In the die casting process, the metal liquid substance is forced into the mold, filled under high pressure, and then solidified by cooling to finally form the product. Die casting is usually used to produce complex and precise parts, such as automobile parts and electronic device housings. The die-casting process can quickly produce a large number of products with excellent surface finish and dimensional accuracy.

From the point of view of process characteristics, gravity casting mainly relies on gravity to complete the filling of metal without additional pressure devices, while die casting requires high-pressure equipment to pressurize the filling metal, which can achieve higher filling speed and density. In addition, the surface finish and dimensional accuracy of die-cast products are usually higher, which is suitable for fields with higher requirements for product quality.

In general, although gravity casting and die casting are both important technologies for metal casting, they have certain differences in process characteristics, application areas, production efficiency and product quality. According to the specific product needs and requirements, choosing a suitable casting process can better meet the needs of production and improve product quality and production efficiency. In the field of metal casting, gravity casting and die casting will continue to play their respective advantages to provide high-quality casting products for all walks of life.

Gravity casting,Huzheng Machinery

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