Preform especially of a connecting rod is made of ceramic, with hole and matching bar or screw

摘要

A preform (1) made of ceramic material s infiltrated n a container At least one hole (2)is made in the preform before infiltration. The inner surface of the hole is covered by inserting a matching part, in the form of a bar (2') or screw (4) to form an infiltration barrier. The part is removed after infiltration. The part has an outer thread to complement the inner thread (3) of the hole.