A process-reliable tailoring of subsurface properties during cryogenic turning using dynamic process control

verfasst von

Berend Denkena, Bernd Breidenstein, Hans Jürgen Maier, Vannila Prasanthan, Lara Vivian Fricke, Felix Zender, Hai Nam Nguyen, Stefan Zwoch, Marcel Wichmann, Sebastian Barton

Abstract

Considering the current demands for resource conservation and energy efficiency, innovative machining concepts and increased process reliability have a significant role to play. A combination of martensitic hardening of the subsurface and near-net-shape manufacturing represent a great potential to produce components with wear-resistant subsurfaces in an energy- and time-saving way. Within the scope of the present study, the influence of cryogenic machining of metastable austenitic steel on the martensitic transformation and surface quality was investigated. Different cooling strategies were used. A soft sensor based on eddy current in-process measurements was used to determine and subsequently affect the martensitic transformation of the subsurface. The feed rate and component temperature were identified as significant factors influencing the martensitic transformation. However, a high feed rate leads to an increase in surface roughness, and thus to a reduction in component quality. For this reason, a roughing process for achieving maximum martensitic transformation was carried out first in the present study and then a reduction in the surface roughness by maintaining the martensitic subsurface content was aimed for by a subsequent finishing process. With the knowledge generated, a dynamic process control was finally set up for designing the turning process of a required subsurface condition and surface quality.

Organisationseinheit(en)

Institut für Fertigungstechnik und Werkzeugmaschinen
Institut für Werkstoffkunde

Typ

Artikel

Journal

Production Engineering

Band

18

Seiten

233–251

Anzahl der Seiten

19

ISSN

0944-6524

Publikationsdatum

04.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Maschinenbau, Wirtschaftsingenieurwesen und Fertigungstechnik

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1007/s11740-023-01244-0 (Zugang: Offen)