Circular Load-Bearing Material Tray Castings

What are the common casting methods for ring-type tray castings?

Common casting methods for ring-type tray castings include the following:

Sand Casting
Sand casting is a method of casting using a sand mold. Sand molds are usually made of a mixture of silica sand and a binder, and can produce castings of complex shapes. The advantages of sand casting are low cost, suitable for small to medium batch production, and can produce large castings. However, the surface finish and dimensional accuracy of sand casting are relatively low.

Investment Casting (also known as lost wax casting)
Investment casting is to make a wax mold and wrap it with ceramic material, then melt the wax mold and discharge it to form a cavity and pour metal. This method can produce high-precision, complex-shaped castings with high surface finish, suitable for small to medium-sized castings. However, it is expensive and has a long production cycle.

Centrifugal Casting
Centrifugal casting is to pour molten metal into a rotating mold, using centrifugal force to evenly distribute the metal and form a dense structure. This method is particularly suitable for producing cylindrical or symmetrical castings, such as ring trays. The advantages of centrifugal casting are that it can produce high-density and high-strength castings, and is suitable for medium-volume production.

Permanent Mold Casting
Permanent mold casting uses reusable metal molds to produce castings with high surface finish and good dimensional accuracy. This method is suitable for medium to large-scale production, but the initial mold cost is high.

Low Pressure Casting
Low pressure casting is to introduce molten metal into the mold at a relatively low pressure, which is suitable for the production of complex shapes and thin-walled castings. This method can reduce defects such as pores and is suitable for materials such as aluminum and magnesium alloys.