Patent ID: 8011095

Claim:
A method for producing a piston ( 1 ) for an internal combustion engine, having a combustion bowl ( 2 ), comprising: attaching a ring-shaped fiber preform ( 3 ) having a shape that is suitable for reinforcing an edge of the combustion bowl ( 2 ) in a casting mold for the piston ( 1 ), coaxial to a piston axis ( 10 ) in a plane of the piston crown ( 5 ), attaching a ring insert ( 4 ) coaxial to the piston axis ( 10 ) in the casting mold, at a distance from the piston crown ( 5 ) that corresponds to an axial length of a top land ( 6 ), introducing an aluminum/copper melt low in silicon into the casting mold, for producing a piston blank, producing a pressure difference between the aluminum/copper melt and the fiber preform ( 3 ) such that infiltration of the aluminum/copper melt into the fiber preform ( 3 ) occurs, subsequently compacting the piston blank by means of hot isostatic pressing, machining the piston blank by means of a cutting machining for producing the piston ( 1 ), whereby a second and third ring groove ( 7 , 8 ) are machined into the piston ( 1 ) and pin bosses with pin bores ( 9 ) are molded onto the piston ( 1 ).