| 摘要 |
The invention relates to a coolable annular support ( 1 ) for internally cooled piston rings, comprising an annular body ( 2 ) embodied as a circular ring and a cooling channel plate ( 3 ), the cooling channel plate ( 3 ) being a component of the cooling channel, and a method for the production thereof. The components forming the annular body ( 2 ) and the cooling channel plate ( 3 ) are connected together by means of laser beams from at least one laser in a continuous wave operation. The cooling channel plate ( 3 ) is U-shaped and has openings ( 6 ) which act as an inlet or an outlet for the cooling material in conjunction with tubular-shaped bodies. It is possible to simultaneously compensate variations in volume by different air temperatures during welding. At least one edge of the annular body ( 2 ) and the cooling channel plate form a cavity ( 5 ) for the cooling material by connecting the end areas of the limbs of the cooling channel plate to said edge of the annular body ( 2 ). The connections of the annular body ( 2 ) and the cooling channel plate ( 3 ) takes place by means of one or more overlapping weld seams ( 4 ), so that a sealing connection between said two components is guaranteed. |
