Indian Journal of Science and Technology
Year: 2011, Volume: 4, Issue: 9, Pages: 1113-1118
J.N. Malleswara Rao1*, A. Chenna Kesava Reddy2 and P. V. Rama Rao3
1 Department of Mechanical Engineering, V. R. Siddhartha Engineering College, Kanuru,Vijayawada-520 007, India
2 Department of Mechanical Engineering, J. N. T. U. College of Engineering, Kukatpally, Hyderabad- 500 072, India.
3 Department of Mechanical Engineering, Mahatma Gandhi Institute of Technology, Hyderabad-500 075, India. [email protected]*
The process of burnishing is performed by applying a highly polished and hardened ball or roller with external force onto the surface of a cylindrical work piece. The burnishing process increases the surface hardness of the work piece, which in turn improves wear resistance, increases corrosion resistance, improves tensile strength, maintains dimensional stability and improves the fatigue strength by inducing residual compressive stresses in the surface of the work piece. In the present experimental work, both ball and roller burnishing tools are used. Experiments are conducted to study the performance of the ball and roller burnishing tools on lathe, along with the influence of number of burnishing tool passes on the surface roughness and surface hardness of brass specimens. The results revealed that improvements in the surface finish and increase in the surface hardness are obtained by the increase of the number of burnishing tool passes in both ball burnishing and roller burnishing on the brass specimens.
Keywords: Ball burnishing, Roller burnishing, Dynamometer, Brass.
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