PARTE SUPERIOR DE UM EMBOLO DE DUAS PARTES PARA MOTORES DE COMBUSTAO INTERNA E PROCESSO PARA A SUA FABRICACAO

摘要

A process for the production of a cast piston upper part of a two-part piston comprising the steps of casting a piston head and a ring section having a collar of tab-type segments, wherein the tab-type segments have tapered ends; and bending over the tab-type segments in the direction towards the middle of the piston to form a lower closure serving as an annular cooling oil space.