PUB - Extreme High-Speed Laser Material Deposition (EHLA) as high-potential coating method for tribological contacts in hydraulic applications

 

A paper on “Extreme High-Speed Laser Material Deposition (EHLA) as High-Potential Coating Method for Tribological Contacts in Hydraulic Applications” was published as Part of the Lecture Notes in Mechanical Engineering book series (LNME).

08/03/2021
 

Additive manufacturing enables the use of a variety of material compositions, especially for near-surface layers and coatings, which allows the optimization of tribological systems regarding their properties like chemical resistance. Nevertheless, it is also cost saving for various hydraulic components. By using the innovative Extreme High-Speed Laser Material Deposition (EHLA) process, a large number of different material combinations can be produced on almost any rotationally symmetrical components. In a previous publication, the authors investigated different process techniques in terms of their tribological properties and used a commonly used stainless 316L material “as printed”. Since stainless steel generally has very critical tribological properties, measurements were performed with relatively low loads and velocities. In these tests, EHLA-coated surfaces achieved convincing results. Based on these findings, further measurements with more realistic loads and specialized tribological investigations were performed. Therefore, this paper examines the frictional behavior of 316L surfaces produced by laser-based EHLA treatment against different tribological pairings such as standard quenched steel as well as brass. Allowing a broad comparability, all surfaces have been post processed by lapping as most of the planar parts of hydraulic components are lapped.

 
Title Author(s)
Extreme High-Speed Laser Material Deposition (EHLA) as High-Potential Coating Method for Tribological Contacts in Hydraulic Applications
Contribution to a book, Contribution to a conference proceedings (2021)
Holzer, Achill (Corresponding author)
Koß, Stephan
Ziegler, Stephan
Schleifenbaum, Johannes Henrich
Schmitz, Katharina
 

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