Volkswagen Ag

Atz-evus Applikations-und Technikzentrum

Hyrdro Aluminium Deutschland Gmbh

Achim Sach

Rolf Heinemann

Josef Steibl

Klaus Färber

Berthold Aumuller

Markus Nolte

Dietmar Hoffmann

Frank Dornenburg

Klaus Dotzler

A light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.

Cylinder crankcase, procedure for manufacturing the cylinder bushings for the cylinder crankcase, and procedure for manufacturing the cylinder crankcase with these cylinder bushings

A process for producing a wear-resistant cylinder bearing surface includes rotating a laser about its longitudinal axis and simultaneously advancing the laser in a direction of the longitudinal axis which is coaxial with a cylinder of a crankcase. A powdery material is fed through the laser and a jet of the powdery material is directed toward the cylinder bearing surface. A laser beam is deflected to an impact region where the jet of the powdery material impinges on the cylinder bearing surface. The jet of the powdery material passes through the laser beam. The laser beam at least partially melts the impact region before the powdery material impinges on the impact region. A device for producing wear-resistant surfaces is also provided.

Process and device for producing wear-resistant, tribological cylinder bearing surfaces

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Langenargen, Germany

Achim Sach