FEM Modelling of the Distortion of the Blank Case Hardened Gear Blanks due to Chemical Banding

Şimşir, Caner
Rentsch, Rüdiger
Lütjens, Jörn
In this study, a FEM process-chain simulation model is presented for the prediction of distortion of blank and case-hardened SAE 5120 (EN 20MnCr5) steel gear blanks. For this purpose, the evolution of the banded microstructure stemming from the continuous casting process was traced by computer simulations of subsequent shape rolling, forging and machining steps. The calculated flow-net was imported into the in-house heat treatment simulation module empowered with the recently developed "Anisotropic Transformation Strain (ATS)" model which enables the inclusion of the effect of banded microstructure on distortion. Then, both blank and case-hardening processes were simulated and verified experimentally. The results indicate good predictions of the dishing directions and dishing-free cutting strategy in both cases; the dishing magnitude is predicted well in blank-hardening simulations while the quality of the prediction is reasonable in case-hardening.
6th International Conference on Quenching and Control of Distortion


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Citation Formats
C. Şimşir, R. Rentsch, and J. Lütjens, “FEM Modelling of the Distortion of the Blank Case Hardened Gear Blanks due to Chemical Banding,” presented at the 6th International Conference on Quenching and Control of Distortion, Chicago, Illinois, Amerika Birleşik Devletleri, 2012, Accessed: 00, 2021. [Online]. Available: http://www.asminternational.org/materials-resources/results/-/journal_content/56/10192/05365G/PUBLICATION.