International Journal of Scientific & Technology Research

IJSTR@Facebook IJSTR@Twitter IJSTR@Linkedin
Home About Us Scope Editorial Board Blog/Latest News Contact Us

IJSTR >> Volume 4 - Issue 2, February 2015 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Study Of Gear Teeth Distortions Due To Heat Treatment

[Full Text]



V. Khade, M.S.Ramgir



Index Terms: Gear Teeth, Distortion, Quenching, Heat Treatment, Defects



Abstract: The work aims to study the distortion occurred due to heat treatment on the Gear teeth. The paper studies, various causes of distortion, control techniques to eliminate distortion, which includes changes in design, selection of material, heat treatment process, mainly due to quenching that includes cooling rates, quenching mediums, fixtures. An experimental study and results conducted for the effects of the distortion on the Gear teeth and to reduce the distortion with certain changes design modification, resulting in shape & size changes, phase changes, changes in hardness, microstructure, and residual stresses. It is observed that adequate velocity of quench oil around the component to be heat treated ensures uniform & desired cooling rate as per heat treatment cycle. Modification in design of baffles achieved the adequate velocity and minimization of distortion. Also, Fixtures for holding finished parts or assemblies during heat treatment may be either support or restraint type to control dimensional relations during aging.



[1] Anil Kumar Sinha, “Defects and Distortion in Heat-Treated Parts,” Bohn Piston Division.

[2] Zhichao Li and B. Lynn Ferguson, “Controlling Gear Distortion and Residual Stresses During Induction Hardening”.

[3] B.L. Ferguson *, Z. Li, A.M. Freborg, “Modeling heat treatment of steel parts".

[4] K. Loeser, V. Heuer and D. R. Faron,, " Distortion Control by Innovative Heat Treating; Technologies in the Automotive Industry".

[5] R.A. Hardin1and C. Beckermann2 " Simulation of Heat Treatment Distortion," 1Research Engineer, 2Professor, Department of Mechanical and Industrial Engineering; the University of Iowa, Iowa City IA 52242

[6] R. Husson a,b, C. Baudouin a, R. Bigota, E. Surab, “Experimental identification of the process influences on gear distortion during heat treatment,” Proc Arts et M´etiers ParisTech Metz, Laboratoire de Conception Fabrication Commande (EA 4495); b. Renault, Powertrain Process Engineering Division(11)

[7] O.P. Khanna, “Material Science and Metallurgy,” Khanna Publications.

[8] C Gadagkar1, Dr. D. N. Shivappa2, Pradeepa Shivaswamy3, “Identification of Gear Distortion in Manufacturing and Finding Solution using Reactive Improvement Methodology,” 1P.G Student, 2Professor, Department of Mechanical Engineering, Sir M Visvesvaraya Institute of Technology, Bangalore, Karnataka Pin Code: 562 157 3Head Automotive Projects, Voith Eng. Pvt Ltd, Bangalore, Pin Code: 560046

[9] Marcell Suliteanu, “Minimizing Gear Distortion Durlng Heat Treating,” heat treating consultant from Minnetonka, MN.