Study on the residual stress of bar with straightening by two rolls

DOI

10.2991/icsma-16.2016.40How to use a DOI?

Keywords

residual stress; straightening; bar; 42CrMo; finite element method

Abstract

The 42CrMo bar has been widely used for its outstanding mechanical performance. Before bar leaves rolling factory, the straightening process should be used to keep bar's straightness. However, the residual stress is also generated simultaneously, which largely affects the bar in using. In this article, the residual stress of 42CrMo bar with two roll straightening process was studied by finite element method. The results show that, after the straightening process, the compressive stress and tensile stress were generated on bar's surface and center, respectively. Meanwhile, the bar's neutral layer was migrated. The bar's residual stress was tested with hole-drilling technology. The comparison between the simulation and test results has been proved the validity of the finite element analysis. The results and methods proposed here is the basis of optimizing straightening process.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yufeng Wang
AU  - Junkai Fan
AU  - Cai Liu
PY  - 2016/12
DA  - 2016/12
TI  - Study on the residual stress of bar with straightening by two rolls
BT  - Proceedings of the 2016 4th International Conference on Sensors, Mechatronics and Automation (ICSMA 2016)
PB  - Atlantis Press
SP  - 217
EP  - 222
SN  - 1951-6851
UR  - https://doi.org/10.2991/icsma-16.2016.40
DO  - 10.2991/icsma-16.2016.40
ID  - Wang2016/12
ER  -