超聲輔助納米流體微量潤滑車削鈦合金實驗研究

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中圖分類號：TG156

DOI：10.3969/j.issn.1004-132X.2025.04.011 開放科學(xué)（資源服務(wù)）標(biāo)識碼（OSID）：

Experimental Study of Ultrasonic Vibration Assisted Turning Titanium Alloys with Nanofluid MQL

ZHENG Jintao MA Haoran WANG Jin LIU Guoliang* School of Mechanical and Automotive Engineering，Qingdao University of Technology，Qingdao， Shandong，266520

Abstract：By combining the ultrasonic vibration assisted cutting with nanofluid MQL，ultrasonic vibration assisted turning experiments were conducted for titanium alloys with different vibration directions and cutting speeds. The synergistic mechanism among diamond，graphene， diamond/graphene composite nanofluids and ultrasonic vibration was analysed. The results show that all modes of ultrasonic vibration may reduce the main cutting force and increase the compressive residual stress， but the ultrasonic vibration in depth of cut direction may enlarge surface roughness. During the ultrasonic vibration asssted cutting，graphene nanosheets may generate interlayer shear effect and enhance heat transfer，thus reducing the cuting forces，decreasing the values of surface roughness，and increasing the compressive residual stresses. The dominant effects of diamond nanoparticles are scratching and polishing under the conditions of high-speed cuttng and vibrations in feed direction，which may reduce the values of surface roughness of Ra to 50% . Diamond/graphene composite nanofluid exhibites balanced performances and reduces the main cutting force and surface roughness than that of palm oil in all three cutting modes， namely the speed-depth of cut direction eliptical ultrasonic vibration-assisted low-speed cutting，the speed-depth of cut direction eliptical ultrasonic vibration-assisted high-speed cutting and the speed-feed direction elliptical ultrasonic vibration-assisted cutting. The maximum reductions of main cutting force and Ra were both larger than 20% ：

Key words：ultrasonic vibration；minimum quantity lubrication（MQL）；nanofluid; titanium alloy；turning

0 引言

切削液被廣泛應(yīng)用于切削加工過程，用于減小切削力、降低切削溫度、延長刀具壽命并改善加工表面完整性等[1]。（剩余18497字）