method of producing a cooled kolbenkopfes and after this procedure are kolbenkopf

摘要

The piston head is produced from three parts: an upper part (1) with circumferential recess (1a); an intermediate part (2) with a circumferential recess (2a); and a lower part (3) for the gudgeon pin. When the three parts are joined by welding, the circumferential recesses (1a, 2a) align to form a closed annular chamber for the passage of coolant. In an alternative manufacturing method, parts (2) and (3) are preformed in one piece, leaving only one welding operation to be performed. ADVANTAGE - Piston head of high strength can be produced.