What is a casting modeler?

A foundry modeler is a sand turner, that is, he uses a mold, puts sand into the mold, tightens it, closes the box and waits for the molten iron to pour out.

Molten sand is a production method in which molten metal is poured into the cavity and cooled and solidified to obtain the product. In the process of automobile manufacturing, many parts are made of cast iron, which account for about 60% of the weight of the whole vehicle, such as cylinder block, transmission case, steering gear case, rear axle case, brake drum and various supports.

Extended data

Molten sand is a production method in which molten metal is poured into the cavity and cooled and solidified to obtain the product. In the process of automobile manufacturing, many parts are made of cast iron, which account for about 60% of the weight of the whole vehicle, such as cylinder block, transmission case, steering gear case, rear axle case, brake drum and various supports. Sand molds are usually used to make iron castings.

The raw material of sand mold is mainly sand, mixed with binder and water. Sand mold materials must have a certain bonding strength to be molded into the required shape, and can resist the erosion of high-temperature molten iron without collapse.

In order to mold the sand mold into a cavity that conforms to the shape of the casting, we must first make a model out of wood, which is called a wooden model. Hot molten iron will shrink in volume after cooling. Therefore, the size of the wooden mold needs to be increased according to the shrinkage rate on the basis of the original size of the casting, and the surface to be processed should be thickened accordingly. Hollow castings need to be made into sand cores and corresponding core wood molds (core boxes). With the wooden mold, you can copy the cavity sand mold.

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