IMPROVEMENT OF THE WEAR BEHAVIOUR OF HIGHLY-LOADED COMPONENTS AND TOOLS BY MULTI-COMBINED SURFACE TREATMENT

Gundis Grumbt, Rolf Zenker, Heinz-Joachim Spies, Rainer Franke, Ingrid Haase
unpublished
Resume These multi-combined surface treatments lead to a significant improvement in load-supporting capacity. Critical load values of cohesive failure measured by scratch tests are tripled when compared to the individual treatment of PVD, and increased by at least 20% in comparison to the duplex treatments of EBH+PVD or PN+PVD. The metallurgical compatibility of the single treatments is essential for the success of combined treatments. Material-specific limitations are defined, which exclude
more » ... d, which exclude failure due to crack initiation, the occurrence of retained austenite, and tempering effects. Based on the model wear-test assembly block-on-cylinder, it was proved, that the specific wear rate of multi-combined treated specimens is reduced about 20-50% while wear of counterpart components is decreased as well. The triplex surface heat treatment introduced opens up new prospects for highly-loaded components and tools.
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