2024.07.19
Lost foam casting is suitable for group casting and makes it easy to remove sand from dry sand-buried molds.
In some cases, residual heat treatment can be performed based on the purpose of the casting.
This method is ideal not only for small and medium-sized parts but also for large castings, such as machine tools, large-diameter pipe fittings, large cold stamping mold parts, and large mining equipment accessories.
It is particularly valued for its short production cycle and low cost.
Lost foam casting is a near-zero-residue, precision casting process. It does not require mold removal, has no parting surfaces, and does not use sand cores, which means the castings are free of flash, burrs, and draft angles.
This reduces dimensional errors caused by the combination of mold cores and offers significant freedom in structural design. Highly complex castings can be produced by combining foam plastic blocks.
Unlike traditional sand casting, lost foam casting ensures that the wall thickness of the casting remains consistent, avoiding unevenness due to inaccurate sand core size or positioning.
The molding sand does not contain chemical binders, and the foam plastic is environmentally friendly at low temperatures, with a waste sand recovery rate of over 95%. This method also reduces the weight of the casting and minimizes the processing allowance.
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