具物理楔面特徵之雷射鏟花油袋對磨潤性能影響之研究

The Effect of Laser Scrapped Oil Pockets with Physical Wedge Characteristics on the Tribological Performance

林原慶 ； 唐俊傑 ； 李姿儀

《機械工業雜誌》 443期 (2020/02) Pp. 21-29

摘要

本研究目的在於探討具物理楔面特徵的油袋在缺油潤滑中對硬軌磨潤性能之影響，以奈秒雷射於低碳鋼試片表面加工具物理楔面特徵的油袋，並使用迴轉式磨耗試驗機進行磨擦試驗，並透過掃描電子式顯微鏡、能量散佈光譜儀等分析儀器觀察其磨耗機制，藉此評估不同油袋幾何特徵對於硬軌磨潤性能之影響。研究結果顯示當油袋出口端深度h1為0 μm、油袋底部傾角為0.16°時，物理楔面之漸縮區指向滑動方向時，能產生明顯微液動壓之效應，進而降低摩擦係數，提升磨潤性能。

關鍵字

雷射鏟花 ； 表面紋理 ； 物理楔面 ； 磨潤性能

並列摘要

This study aims to investigate effect of geometric characteristics of oil pockets scrapped by laser under starved lubrication condition on the tribological performance. Different surface patterns on low carbon steel were fabricated by nano-second pulsed laser. Friction tests were conducted using a rotating type tribometer along with scanning electron microscope, energy dispersive spectrometer and other analytical instruments to observe their wear mechanisms to evaluate the influence of different oil pocket geometric characteristics on the hard rail tribological performance.The experiment results showed that the surface pattern with physical wedge (outlet depth of 0 μm and bottom inclination angle of 0.16°) could enhance the micro hydrodynamic effect during sliding contact, resulting in decreased friction coefficient and improved the tribological performance.

並列關鍵字

Laser scrape ； Surface texture ； Physical wedge ； Tribological performance