Coolable annular support used for inner-cooled piston rings comprises an annular body formed as a circular ring; and a cooling channel sheet

摘要

Coolable annular support comprises an annular body (2) formed as a circular ring; and a cooling channel sheet (3). The end regions of the sides of the cooling channel sheet are connected with openings (6) using laser beams of a laser with the introduction of a metal powder and a protective gas. The cooling channel sheet and the surface bordering the inner chamber of the annular body border a hollow chamber as cooling channel. Either a tubular body or a plate-like body is arranged on or in the opening and is connected to the side of the cooling channel sheet via a welding seam. Preferred Features: Several coolable annular supports are arranged symmetrical and parallel so that several tubular bodies are arranged between coolable annular supports.