Abstract: In a method of producing a piston (10) for an internal combustion engine including at least one strengthened piston ring groove at least one relatively narrow groove (14) is configured in the region of the upper and/or lower flank of the provided piston ring groove (18) and the groove (14) is filled with a hard-wearing material (16) and the piston ring groove (18) is worked out such that the upper and/or lower flank is formed at least in part by the hard-wearing material (16).

Abstract: In a method of producing a piston (10) for an internal combustion engine including at least one strengthened piston ring groove at least one relatively narrow groove (14) is configured in the region of the upper and/or lower flank of the provided piston ring groove (18) and the groove (14) is filled with a hard-wearing material (16) and the piston ring groove (18) is worked out such that the upper and/or lower flank is formed at least in part by the hard-wearing material (16).

Abstract: A method and an apparatus (6, 7) are disclosed for manufacturing a cutting tool (1′) provided with at least one cutting body (3′). The base body (2) of the tool is moved in a certain direction (10), and during this time a substance (4) that contains particles of cutting material (12) is applied on a bearing surface (5′) of the base body (2) of the tool by supply means (6). A heating device (7) melts the substance (4) on the bearing surface (5′), binding the substance (4) to the bearing surface (5′). The bearing surface (5′) is moved section by section in the direction of displacement (10) of the base body (2) of the tool in the opposite direction to the force of gravity (G) at least during the setting time of the substance (4) applied on each section (17′) of the bearing surface (5′).