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Optimization of Heat Treatment Parameters for Improved Wear Resistance and Impact Strength of SAE 51100 Bearing Steel Using Taguchi Techniques


Affiliations
1 Department of Manufacturing Engg., Anna University, Chennai-25, India
2 Department of Production Technoiogy, MIT Campus, Anna University, Chennai-44, India
3 Department of Mechanical Engineering, Anna University, Chennai-25, India
     

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Bearing components should have high hardness accompanied by good wear resistance and load bearing strength. The most commonly used material for the manufacture of bearing components is steel. To achieve high hardness accompanied by good wear resistance, cryogenic treatment is considered as a supplementary process to conventional heat treatment. Increasing the wear resistance and the impact strength of the bearing components plays an important role in improving manufacturing standards. Since simultaneous enhancement of both these opposing properties is difficult in the heat treatment processes, a method of optimizing these properties together can increase the life o f the bearing components. The factors identified as affecting impact strength and wear resistance are the austenitising temperature, the austenitising time, the tempering temperature, the tempering time, the cryogenic treatment, the quenching media and the type of tempering. In this paper, an attempt is made to find out the optimum combination of heat treatment factors to optimize wear resistance and impact strength of the SAE 51100 bearing steel by using Taguchi’s techniques.
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  • Optimization of Heat Treatment Parameters for Improved Wear Resistance and Impact Strength of SAE 51100 Bearing Steel Using Taguchi Techniques

Abstract Views: 232  |  PDF Views: 0

Authors

P. Hariharan
Department of Manufacturing Engg., Anna University, Chennai-25, India
R. P. Chandrasekar
Department of Manufacturing Engg., Anna University, Chennai-25, India
A. Suresh Babu
Department of Manufacturing Engg., Anna University, Chennai-25, India
A. Rajadurai
Department of Production Technoiogy, MIT Campus, Anna University, Chennai-44, India
D. Mohanlal
Department of Mechanical Engineering, Anna University, Chennai-25, India
S. Renganarayanan
Department of Mechanical Engineering, Anna University, Chennai-25, India

Abstract


Bearing components should have high hardness accompanied by good wear resistance and load bearing strength. The most commonly used material for the manufacture of bearing components is steel. To achieve high hardness accompanied by good wear resistance, cryogenic treatment is considered as a supplementary process to conventional heat treatment. Increasing the wear resistance and the impact strength of the bearing components plays an important role in improving manufacturing standards. Since simultaneous enhancement of both these opposing properties is difficult in the heat treatment processes, a method of optimizing these properties together can increase the life o f the bearing components. The factors identified as affecting impact strength and wear resistance are the austenitising temperature, the austenitising time, the tempering temperature, the tempering time, the cryogenic treatment, the quenching media and the type of tempering. In this paper, an attempt is made to find out the optimum combination of heat treatment factors to optimize wear resistance and impact strength of the SAE 51100 bearing steel by using Taguchi’s techniques.