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Standardization of test particles by trial-based approximation of the damaging potential of manufacturing swarfs

Piotter, V.; Plewa, K.; Klein, A.; Brag, P.; Herzfeldt, M.; Umbach, S.

Abstract (englisch):

Particulate residues originating from manufacturing and assembly processes can cause severe incidents in automobile powertrains or safety-relevant modules. Robustness validation and tribological studies require synthetic test contamination to imitate the particulate residues. A collaborative research project was started to evaluate whether such particles could be produced with high reproducibility and if they would reveal sufficient damage potential. To enable future mass production micro powder injection molding (MicroPIM) was chosen as manufacturing process with the lowest tolerances and best reproducibility. For this purpose micro suitable feedstocks containing 42CrMo4 steel powders had to be developed. Additionally, micro mold inserts incorporating free-formed surfaces had been used for the first time. The damage potential of the test particles was evaluated based on trials using journal bearing and shift valve test rigs. Furthermore, test particles and particulate debris from assembly processes were analyzed by light microscopy and micro computer tomography in order to check the fit of characteristics.

Postprint §
DOI: 10.5445/IR/1000140009
Veröffentlicht am 01.12.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Proceedingsbeitrag
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISBN: 978-3-8007-5656-8
KITopen-ID: 1000140009
HGF-Programm 43.34.01 (POF IV, LK 01) Lightweight Materials for Structural and Medical Application
Erschienen in MikroSystemTechnik Kongress 2021
Veranstaltung MikroSystemTechnik Kongress (2021 2021), Ludwigsburg, Deutschland, 08.11.2021 – 10.11.2021
Verlag VDE Verlag
Seiten 332 - 335
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