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Licensed Unlicensed Requires Authentication Published by De Gruyter June 11, 2013

Investigation of the surface residual stresses in spray cooled induction hardened gearwheels

  • Dmytro Rodman , Christian Krause , Florian Nürnberger , Friedrich-Wilhelm Bach , Lorenz Gerdes and Bernd Breidenstein

Abstract

The objective of the current investigation consists of testing the interchangeability of polymer solutions used during induction hardening with water – air spraying regarding compressive residual stresses. Gearwheels made of 42CrMo4 steel were induction hardened and subsequently quenched using water–air spray cooling. The effect of different cooling parameters on the surface's residual stresses in the gearwheel's tooth flanks was analysed by means of X-ray diffraction. The microstructure was characterised by means of hardness measurements and light-microscopy. Residual stresses could be specified after using water – air spray cooling and are comparable to those using polymer quenching. Quench parameters leading to maximum compressive residual stresses in tooth flanks were determined.


* Dipl.-Wirtsch.-Ing. Dmytro Rodman, Leibniz Universität Hannover, Institute of Materials Science, An der Universität 2, 30823 Garbsen, Germany. Tel.: +49(0) 51176218087, Fax: +49(0)51 17625245, E-mail:

Dedicated to Prof. Dr.-Ing. Christina Berger on the occasion of her 65th birthday


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Received: 2011-3-14
Accepted: 2011-8-1
Published Online: 2013-06-11
Published in Print: 2012-01-01

© 2012, Carl Hanser Verlag, München

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