DORN FUER DIE HERSTELLUNG VON HOHLEN, ARMIERTEN TEILEN.

摘要

In order to fabricate hollow parts by implementation of pins on a mandrel, setting in place wires according to at least two different directions along corridors formed between the pins, and densifying the obtained structure, a mandrel is used which is made of a material of which the compressive strength is compatible with the conditions of implementation of the pins and which keeps its geometrical integrity up to at least 700C approximately. Said material is preferably a mineral material such as silica. It has the aspect of a foam or a felt. In the case of a felt, the latter is fixed to an inner support by means of an adhesive which, as well as the support, resists to a temperature of at least 700C approximately. The utilization of this type of material enables to fabricate all parts on one same mandrel even when said parts are brought to a temperature of at least 700C during their densification.