METHOD OF MANUFACTURING A COOLED PISTON HEAD.

摘要

Method for the manufacture of a cooled piston head including a closed cooling chamber. In one embodiment, the piston head is composed of a top element (1), an intermediate element (2) and a gudgeon-pin boss element (3) which are mutually connected by welding; the top element (1) and intermediate element (2) are provided with circumferential grooves (1a, 2a) which form the closed cooling chamber. In an embodiment variant, the head is composed of a top element and a pin boss element connected together by welding; the closed cooling chamber is formed by circumferential grooves produced on both elements.