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Advances in Technology of Soluble Cores for Die Castings

Jelínek P., Adámková E., Mikšovský F., Beňo J.

Archives of Foundry Engineering

2015

Vol. 15, iss. 2

29--34

A number of technologies is developed that substitute simple metal cores in the high-pressure casting technology. Soluble cores, namely on the salt basis, represent the highest prospect. The contribution gives the results of the production of salt cores by high-pressure squeezing and shooting with using a binder. Special attention is paid to the shape of NaCl salt crystals with additives and the influence on strength properties of cores. A technology of bonding the salt cores is developing. Salinity of circulating water is studied and it is checked with the aid of electrical conductance.