Effect of Nanoparticle Percentage in Nano-Lubricants on Friction Behavior in Hot Forging of 17-7PH Steel

Moghani, Yaser; Dadgar Asl, Yaghoub; Sheikhi, Mohammad Morad; Yousefzadeh, Shahrouz

doi:10.48301/jear.2025.504517.1084

Effect of Nanoparticle Percentage in Nano-Lubricants on Friction Behavior in Hot Forging of 17-7PH Steel

Document Type : Original Article

Authors

Yaser Moghani ¹

Yaghoub Dadgar Asl ²

Mohammad Morad Sheikhi ³

Shahrouz Yousefzadeh ⁴

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

² Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran

³ Faculty of Mechanical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran

⁴ Assistant Professor, Department of Mechanical Engineering, Aligudarz branch, Islamic Azad University, Aligudarz, Iran

10.48301/jear.2025.504517.1084

Abstract

In hot forging process, a lubricant is added to the mold to increase the metal flow, reduce friction and wear, and help separate the final part from the mold. The lubrication in a hot forging process is the key to quality and productivity. 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) with two different nanoparticles concentrations (0.5wt % and 1wt %) as an additive to base oil (SAE10) at 1050 °C on the friction behavior of 17-7 PH stainless steel using RCT and finite element analysis (FEA) has been studied. Finally, the importance of using Nano lubricants with different nanoparticles concentrations (0.5wt % and 1wt %) in the hot forging process has been investigated. The results showed that nanoparticles as lubricant additives performed better than conventional lubricants (such as graphite) for the frictional behavior of 7-17 PH stainless steel in the hot forging process So that at 1050 ° C the Friction factor by the addition of AL2O3 nanoparticles was reduced about 36% and by the addition of glass nanoparticles about 40%. It was also observed that by adding 0.5wt % Nano glass and AL2O3 nanoparticles to SAE10 base oil, the coefficient of friction (m) was significantly reduced, but with increasing nanoparticles concentrations to 1wt %, the coefficient of friction (m) was somewhat raised.

Keywords

Hot Forging

Nano-lubricant

17-7PH stainless steel

RCT

FEA

Subjects

Mechanical Engineering

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