The process of obtaining formwork of sand covered, casting sculptures or parts of engineering complex, by the method of clay lost via acid

摘要

The process of obtaining formwork of sand covered, casting sculptures or parts of engineering complex, by the method of clay lost via acid. Invention patent for the process of obtaining formwork of sand covered for casting of sculpture complex by the method of clay, via acid.The invention deals with a process that aims at the use of the effects of dissolution of a clay compound in acid solution, forming a void inside a solid block of furan resin sand covered, not attacked by the acidic solution, for the production of molds for casting of Sculptures or complex objects.Due to the high porosity and stability of sand covered the gas melt escape without problems and the sculpture or object are almost ready, requiring little finish, with low cost and accuracy.