Throughout the entire application process, aluminum castings offer unparalleled advantages over other types of castings. Notably, in the field of new‑energy vehicles, aluminum alloy castings have been widely adopted in automotive manufacturing. Although aluminum castings have a lower specific gravity, they exhibit higher specific strength compared to cast iron and cast steel. Consequently, under the same load conditions, using aluminum alloy castings can help reduce overall structural weight. As a result, aluminum alloy castings are extensively employed in the aerospace industry, as well as in the production of transmission equipment and transportation machinery.

Aluminum castings deliver excellent casting performance throughout the foundry’s entire production process. With their low melting point, they are widely applicable in metal materials and pressure‑casting processes, enhancing the internal quality of castings while also enabling tighter tolerances, superior surface finish, and higher production throughput.

Aluminum castings possess a higher latent heat of solidification and vaporization. Under the same conditions, the solidification process of lithium bromide solutions remains significantly longer than that of steel and cast iron, while exhibiting excellent fluidity—features that favor aluminum casting manufacturers in producing thick-walled components with well‑designed internal structures.

After the foundry pours the high‑temperature molten metal into the mold, the mold cavity fills with a large volume of steam. This steam must be efficiently vented from the mold; molding sand must allow it to pass through. This property is known as permeability. Otherwise, defects such as blowholes and insufficient filling may occur. The permeability of the mold is influenced by the sand grain size distribution, clay content, moisture level, and sand density.

Foundries refer to the ability of aluminum castings to resist external forces as compressive strength. Molding sand must possess sufficiently high compressive strength to prevent collapse throughout the molding, handling, and assembly processes, and to avoid damaging the mold surface during casting. However, the compressive strength of molding sand used in foundries should not be excessively high; otherwise, reduced permeability and tighter dimensional tolerances may lead to casting defects.

Gravity casting offers excellent dimensional stability, producing dense, tough castings with controllable machining allowances. It exhibits superior high‑temperature strength and pressure resistance, making it ideal for thick‑walled components in the machinery, hardware, and new‑energy sectors. Molds, part geometries, and material specifications can all be custom‑designed; we also provide mold‑making services based on your drawings or samples. We can tailor process parameters to meet your specific application requirements, and non‑standard, irregularly shaped parts as well as castings in special dimensions are available on demand.