| ZHANG Na,YANG Fa-zhan,JIANG Fu-lin.Numerical Simulation and Experiment on Sinusoidal Grooved Texture with Different Angles on Tool Surface[J],48(8):83-89 |
| Numerical Simulation and Experiment on Sinusoidal Grooved Texture with Different Angles on Tool Surface |
| Received:February 21, 2019 Revised:August 20, 2019 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2019.08.012 |
| KeyWord:sinusoidal texture different angles numerical simulation cutting fluid cemented carbide titanium alloy friction and wear |
| Author | Institution |
| ZHANG Na |
Qingdao University of Technology, Qingdao , China |
| YANG Fa-zhan |
Qingdao University of Technology, Qingdao , China |
| JIANG Fu-lin |
Qingdao University of Technology, Qingdao , China |
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| Abstract: |
| The work aims to analyze the influence of sinusoidal grooved texture with different angles on tool surface on the tribological performance of contact surface. Sinusoidal grooved textures with 0°, 30°, 60° and 90° to vertical lines were fabricated on the surface of cemented carbide by laser processing equipment. The parameters like lubricant pressure, etc. in sinusoidal grooved textures with different angles were simulated and analyzed by finite element software FLUENT. At the same time, the friction and wear experiments of cemented carbide and titanium alloy balls with textures were carried out. The surface results after the friction experiment were observed by scanning electron microscope. The sinusoidal grooved textures with four different angles on the surface of cemented carbide could reduce the friction coefficient with titanium alloy, and with the increase of sliding speed, the friction coefficient of four types of cemented carbide textured samples decreased in varying degrees. 90° sinusoidal textured sample had the most obvious antifriction effect, and the friction coefficient decreased by 77% compared with smooth sample. At the same time, a series of experimental results showed that the numerical simulation results of the sinusoidal grooved texture were basically consistent with the experimental results. The sinusoidal grooved texture with different angles on the tool surface produced different hydrodynamic lubrication effects, with a significance of 90°>30°>0°>60°. The existence of groove texture on the surface of cemented carbide is of great significance to reduce the friction coefficient and wear amount in the friction with titanium alloy. Especially, the existence of 90° sinusoidal groove texture can greatly improve the surface tribological properties of cemented carbide. The main mechanism is to replenish the lubricant on the contact surface effectively, and continuously produce the hydrodynamic lubrication effect, establish and form a continuous oil film between the friction contact interfaces, which can reduce friction and wear. |
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