APPARECCHIO PER FUSIONI E COLATE SOTTOVUOTO COL PROCEDIMENTO A CERA PERSA.

摘要

In this machine for lost-wax moulding, the metal is melted in a first enclosure (bell 3), in which a vacuum is created (pump 26), whilst means 21, 22, 23 produce a higher vacuum in the chamber 4 in which the mould is placed during casting of the molten metal.