VERFAHREN ZUR HERSTELLUNG EINES KOLBENS MIT EINER HOEHLUNG.

摘要

A method for the production of a cavity in a piston (23) is described. The method comprises the steps of forming a porous body around an element which has the shape of the desired cavity (17), heating to a temperature such that the element melts and infiltrates the porous body at least in the immediate vicinity of the resulting cavity. The article may then, for example, be incorporated into a piston for an internal combustion engine so as to form a cavity in the crown region (19) thereof.