| Numerical Analyzing Lubrication System Performance in the Cold Extrusion of Tappet Cup |
| کد مقاله : 1038-ICME2025 (R1) |
| نویسندگان |
|
Mahdi Gerdooei *1، مهدی معدندار2، جواد علی نژاد3 1هیات علمی دانشگاه صنعتی شاهرود 2دانشگاه صنعتی شاهرود 3شرکت فنرلول ایران |
| چکیده مقاله |
| The tappet, as one of the main components in the valve system of internal combustion engines, must possess both lightness and high strength along with excellent wear resistance. Cold extrusion of this component from rolled steel bars ensures the elimination of structural defects and enhances the part’s strength through strain-hardening mechanisms during cold working. In this study, the cold extrusion process of a tappet made of 1.7131 steel was simulated using the commercial finite element software Deform-3D. The workpiece behavior at room temperature was modeled as homogeneous and isotropic, with a linear elastic and nonlinear plastic material model. The effect of strain rate sensitivity was neglected. Furthermore, the impact of three different lubrication systems, including sodium soap powder on a zinc phosphate layer, mineral oil with extreme pressure additives, and dry conditions, was analyzed on the force, energy, and the maximum induced stress and strain levels. The results indicated that the most effective lubrication mechanism was the sodium soap powder on a zinc phosphate layer, which reduced the process force and energy by 34% and 30%, respectively, compared to dry conditions. Under these conditions, the maximum stress and strain decreased by 33% and 21%, respectively. Overall, it was concluded that using an appropriate lubrication system significantly affects the control of force, energy, and stress-strain levels within the part. |
| کلیدواژه ها |
| Cold extrusion, Cold forging, Lubrication mechanism, Friction, Cam shaft, Cam follower |
| وضعیت: پذیرفته شده برای ارسال فایل های ارائه پوستر |
