Abstract
Nowadays, there is a significant demand for molded pieces, which do not require subsequent machining. Especially it is topical for complex internal cavities of high quality. On the one hand, it is impossible to obtain the cavities of such quality by means of the sandy-argillaceous rods without subsequent machining, on the other hand, such mechanical treatment is complicated, because it is impossible to bring the cutting tool to the work surface. The article suggests the technology of production of the complex internal cavities by means of the fusible metal rods of high quality. This approach allows us, besides the above, to provide improvement of the operating abilities, such as, corrosion resistance, due to the casing on the internal cavity. This technology can be used in the production of cooled pistons of internal combustion engines, hydraulic equipment, etc. The article also discusses and suggests the best choices of the materials for the casing.
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