Abstract
In this study, the distortion of steel shafts was investigated before and after induction hardening. Several essential influencing factors in the manufacturing process chain regarding cold drawing, cutting method, notches on the shafts, and induction hardening were analyzed by design of experiment (DoE). Further necessary examinations of microstructures, hardness profile, segregation of chemical composition, and residual stress state were conducted for understanding the distortion behavior. The results of the statistical analysis of the DoE showed that the drawing process is the most important factor influencing distortion. The surface hardening depth of induction hardening is the second main factor. The relationship between inhomogeneities in the work pieces and the distortion was finally discussed.
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Acknowledgments
This work was done in the frame of the “BRAGECRIM” program (Brazilian German Cooperation Research Initiative in Manufacturing). The authors are deeply indebted to DFG, CAPES, and CNPq for financial support. This research also has been supported by the European Commission under the 7th Framework Program through the Key Action: Strengthening the European Research Area, Research Infrastructures: Contract No. 226507 (NIMI3).
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Dong, J., Epp, J., Rocha, A. et al. Investigation of the Influence Factors on Distortion in Induction-Hardened Steel Shafts Manufactured from Cold-Drawn Rod. Metall Mater Trans A 47, 877–888 (2016). https://doi.org/10.1007/s11661-015-3250-4
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DOI: https://doi.org/10.1007/s11661-015-3250-4