Analysis of Friction behavior of 17-7 PH Stainless Steel Using Nano-lubricant in Hot Forging Process

Document Type : Original Article

Authors

1 PhD student, Department of Mechanical Engineering, Aligudarz branch, Islamic Azad University, Aligudarz, Iran.

2 Assistant professor, Department of Manufacturing, Shahid Rajee Teacher Training University (SRTTU), Tehran, Iran.

3 Assistant professor, Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran.

4 Msc, Department of Mechanical Engineering, Aligudarz branch, Islamic Azad University, Aligudarz, Iran.

Abstract

The material forming through the forging process is one of the manufacturing methods in which the metal is compressed or subjected to high forces to create high-strength parts. Before the process, a lubricant is added to the mould to increase the metal flow, reduce friction and wear, and help separate the final part from the mould. The lubricant in hot forging process and lubrication are key factors for increasing production quality. One of the best ways to study the effect of lubricants in this process is ring compression testing (RCT). In this study, the effect of nanoparticles (Aluminum oxide (AL2O3) and Nano-glass) as an additive to base oil (SAE10) at 1050 °C on the friction behaviour of 7-17 PH stainless steel using RCT and finite element analysis (FEA) was studied. Finally, the importance of using nano-lubricants in hot forging process was investigated. The results showed that nanoparticles as lubricant additives performed better than conventional lubricants (such as graphite) for the frictional behaviour of 7-17 PH stainless steel in hot forging process. For 7-17PH stainless steel at 1050 ° C, the friction factor was reduced by approximately 36% with the addition of AL2O3 nanoparticles and by approximately 40% with the addition of glass nanoparticles. Therefore, adding nano-glass presented better results compared to AL2O3 nanoparticles.

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Main Subjects

References

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Karafan Quarterly Scientific Journal
Volume 19, Issue 3 - Serial Number 59
Technical and Engineering
December 2022
Pages 203-220

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History

  • Receive Date: 10 October 2021
  • Revise Date: 20 October 2021
  • Accept Date: 10 November 2021

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