Maßgeschneiderte Tribologie durch Laseroberflächenbehandlung

Abstract

There are quite different requirements for tribological properties of surfaces in industry. Both reduction and maximization of friction and/or wear are possible requirements. The friction and wear properties depend on the tribological system consisting of the friction partners, the medium between them and the environment around them. So for each application tailored surfaces with special tribological properties are needed. In the paper examples are presented which deal with the investigation and the implementation of laser based processes to obtain surfaces with very different tribological properties. Wavelengths, output power values, intensity distributions and beam qualities of the available lasers vary in a wide range. Also the available devices for beam formation and beam guidance enable special processes for tailoring properties for particular applications. These processes are for example the single-layered or multi-layered laser cladding generating homogeneous or graded claddings, the laser alloying or laser dispersing and the laser stimulated deposition of diamond layers at atmospheric pressure.

Wear recording at micro deep drawing tools with comparative digital holography

“…In the deep drawing process of micro parts, tribological effects play a far more significant role than in macro processes [1,2]. In order to minimize effects, research focuses on enhanced tools manufactured from friction-reduced materials and/or with friction-reducing micro structures upon the surfaces [3,4]. A measuring technique which measures wear at micro deep drawing tools has to be introduced.…”