Method for producing an object of a composite material consisting of a body of a porous material and another material infiltrated into said body.

摘要

A method for manufacturing an object of a composite material in which first a body (7) of porous material having substantially the same shape and dimensions as the object is produced and thereafter said body is infiltrated with a material in the molten state, in particular a metal, by immersion of said body at least partially in a bath (12) of said molten material, a reduced pressure being created in said body at least during the period of time in which the porous body is kept immersed in the bath of molten material, which reduced pressure inside the body is preferably controlled when lifting the body from the bath. Advantageously said particulate material is poured into a die corresponding to said body of which at least one wall portion consists of a flexible sheet-like material (8) which later on vanishes by the high temperature of the bath, then a reduced pressure is created in the particulate material whereafter the die and the particulate material contained therein is immersed into the bath said reduced pressure being maintained.