2022-09-29
Wheel hubs can be divided into steel and aluminum according to the material. At present, there are fewer and fewer steel wheels, and most of the models use aluminum alloy wheels, of which the most common casting methods are gravity casting and low-pressure casting.
The wheel dies casting process refers to the process of introducing non-ferrous metal molten metal into metal wheel hub molds to produce automobile wheels. Individual castings may require different specifications, depending on their end application, requiring changes to the die casting process to achieve different results.
Gravity casting and low-pressure die casting(LPDC) are two of the most popular die-casting processes. Both gravity wheel mold casting and low-pressure die casting are metal mold casting processes and are both used to produce aluminum castings.
Gravity casting mainly relies on the gravity of molten aluminum to pour into the gravity wheel mold cavity, and the pressure in the flow comes from the self-weight of the molten aluminum itself. Gravity casting is the most primitive casting process, with relatively low technical requirements, and most of them are carried out manually.
Gravity Wheel Mold Design & Gravity Wheel Mold Making
Low-pressure casting means that molten aluminum enters the mold from bottom to top, and the molten aluminum solidifies and crystallizes under pressure. The whole process of low-pressure casting is carried out mechanized and has the characteristics of a stable process level.
LPDC Wheel Mold Design - LPDC Wheel Mold for Sale
The way the mold receives molten metal is the main difference between gravity casting and pressure die casting. In general, gravity casting fills the mold with gravity, while low-pressure die casting injects molten metal into the mold under pressure that is maintained until the casting solidifies.
LPDC is an automated process, which means that low-pressure die casting molds have relatively expensive setup and tooling costs. Gravity casting relies solely on gravity to fill the mold, which makes the process slower than low-pressure casting. Gravity casting is generally more cost-effective where small batches are required.
In contrast, gravity casting is more suitable for small-batch, short-cycle aluminum casting production. The lower cycle rate prevents heat build-up in gravity die casting molds and allows for rapid cooling of the casting. Gravity die casting also features a sand core that supports the production of high-quality aluminum castings that are free of pores and sand holes.
Filling the mold under pressure enables low-pressure die casting to achieve dimensionally precise and complex castings. The low-pressure die-casting process allows sufficient time for improvements in production technology. The potential for high productivity means that low-pressure die casting is more suitable for stable high volume production runs.
The choice of a wheel die casting manufacturing process often depends on factors such as the geometry of the cast part, the production run, etc.
Both gravity wheel mold and low-pressure die casting mold are worthwhile choices. That's why Superband offers these two options along with many others, including flow form molds, and forged wheel mold casting.
Superband is one of the leading die cast mold manufacturers in China, we can meet your die casting mold design needs including gravity wheel mold design, IPDC wheel mold design, and flow forming mold design.
