what is aluminum sand casting

    Sand casting, known as sand molding casting, is a casting process that uses sand as a mold. Then pour the liquid metal into this mold to create a casting part.It is one of the oldest casting processes. It can be used to make metal components of all sizes, ranging from 1kg to hundred tons. The statistics show more than 61% of all metal castings are produced by sand casting.

In modern industry, the sand casting Process controls, material options, tolerance capabilities, the ability to produce elaborate parts, broad size ranges have all come a very long way. It has several unique advantages.

The advantages of sand casting

• Suitable for more metals types.

• Can be for large size, Complex shapes sand casting products

• Compare with other metal forming processes, Tooling and equipment cost is low

• Scrap metal can be recycled

• Short lead time

The disadvantages of sand casting

• Sand casting has porosity, causing a low final part strength

• The surface finish is not good, need clean

• The cooled metal has shrinkage, which causes the dimensional accuracy to be poor.

• Low tolerance products need secondary machining

Although sand casting is a cheaper alternative to another investment casting. And can offer more complex shapes products. It needs time to get the same accuracy, finish, and overall part quality.So what product is better for sand casting?

Sand casting Applications

The sand casting process makes it ideal for almost any complex part.
Here we list its applications in different industries.So you can see how varied the possible applications can be.

• Many kinds of pistons and valves

• Blowers/impellers

• Cams, bushing, and bearings

• Electronic equipment

• Engine blocks

• bearings

• blowers & impellers

• electronic equipment

• gears

• machine parts

• mining machine parts

• oil pans

• pump bodies, pistons

• screw nuts

• trailer parts

• truck chassis parts

• valves

• water jackets & crankcases

• Automobile parts

• Screws, nuts, and gears

• Agricultural machines

• Medical equipment

Although sand casting is the oldest casting process. It’s basic producing technic no change. Just like to create a cavity in the parts shape then pour molten metal into it to get finished products. This is the most available and the most widely used metal casting method.