INDEXED IN 

International Journal of Modern Science and Technology

ISSN 2456-0235

​​​​​Vol. 2, No. 11, 2017, pp. 373-376. 

​

​Shot Peening of Induction coil Hardened Spur Gear Tooth to Avoid Failure  

Pawan Kumar*, M. L. Aggarwal
Department of Mechanical Engineering, YMCA University of Science and Technology, Faridabad-121006, Haryana, India.
​​​*Corresponding author’s e-mail: pawantaneja70@gmail.com

​Abstract

​Spin hardening inductors uses several design parameters and only the gear teeth can be case surface hardened without affecting the other surface of gear. The induction coil hardened gears are typically tempered for less than a minute time as compared to normal tempering process of one hour at a specified temperature. It is observed that the required surface properties on gear are not achieved and needs improvement by shot peening. Effect of shot peening on surface properties of gear has been discussed in the present work. A hardness model has been worked out using response surface methodology for shot peened gear. Present work is about analyzing various surface properties of hardened and shot peened spur gear using spin hardening inductors and comparing it with non-peened surface.

Keywords: Liquid Induction hardness; Spur gear; Response Surface Methodology; Shot peening. 

​References

  1. Rudnev VI, Loveless D, Cook R,  Black M. Handbook of Induction Heating. Marcel Dekker; NY: 2003.
  2. Rajan TV, Sharma CP, Sharma A. Heat Treatment Principles and Techniques. Prentice Hall; New Delhi: 1994. 
  3. Schwenk WR. Simultaneous Dual-Frequency Induction Hardening. Heat Treating Progress. 2003;3:35-38.
  4. Ferguson BL, Freborg A, Petrus G. Software Simulates Quenching. Advanced Materials and Processes. 2000. pp. H31-H36.
  5. Li Z, Ferguson BL, Freborg A. Data Needs for Modeling Heat Treatment of Steel Parts. Proceedings of Materials Science and Technology Conference. 2004. pp. 219-226.
  6. Murata K, Mizutani K, Tanaka Y. Residual stress in multi-indented surface layer of ceramic : effects of hardness and X-ray penetration depth on residual stress. J Soc Mater Sci Jpn. 1994;43:772-778.
  7. Mutoh Y, Gair GH, Waterhouse RB. The effect of residual stresses induced by shot peening on fatigue crack propagation in two high strength Aluminium alloys. Fatigue Fract Eng Mater Struct. 1987;10(4):261-272.
  8. Guilherme VBL, Thomas KH, Alexandre DR, Rafael MN. Residual stress analysis of drive shafts after induction hardening. Mater Res. 2014;17:S70-74.
  9. Sharma MC. Improvement of fretting fatigue performance of large steam turbine blade material using ball peening. ICSP & SB-2, Bhopal, India. 2001.
  10. Shaw BA, Aylott C, Hara PO, Brimble K. The role of residual stress on the fatigue strength of high performance gearing. Int J Fatigue. 2003;25:1279-1283.
  11. Townsend DR, Zaretsky EV. Effect of Shot Peening Christenson, A.L., ed., 1971, Measurement of Stress by X-Ray, on Surface Fatigue Life of Carburized and Hardened AISI 9310 SAE, New York. Spur Gears. NASA TP-2047, NASA Lewis Research Center, Cleveland, OH; 1982.