Influence of oil mist parameters on minimum quantity lubrication – MQL grinding process |
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| Authors: | T Tawakoli MJ Hadad MH Sadeghi |
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| Affiliation: | 1. Institute of Grinding and Precision Technology (KSF), Furtwangen University, 78054 VS-Schwenningen, Germany;2. CAD/CAM Laboratory, Manufacturing Engineering Division, School of Engineering, Tarbiat Modares University, Tehran, Iran;1. Mechanical Engineering Department, SRM University Kattankulathur, 603203, Tamil Nadu, India;2. Mechanical Engineering Department, Indian Institute of Technology (ISM), Dhanbad 826004, India;3. Mechanical Engineering Department, Institute of Engineering and Technology Lucknow, India;1. Manufacturing Engineering Group, Islamic Azad University, Dehaghan Branch, Dehaghan, Iran;2. Department of Mathematics, Tarbiat Modares University, Tehran, Iran;1. School of Mechanical Engineering, Qingdao University of Technology, 266520 Qingdao, China;2. Shanghai Jinzhao Energy Saving Technology Co.Ltd, 200436 Shanghai, China;3. College of Mechanical and Electrical Engineering, Qingdao Binhai University, 266520 Qingdao, China;1. School of Mechanical Engineering, Qingdao Technological University, 266033 Qingdao, China;2. School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, 410114 Changsha, China |
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| Abstract: | Promising alternatives to conventional dry and fluid coolant applications are minimum quantity lubricant (MQL) or near dry grinding. Despite several researches, there have been a few investigations about the influence of MQL parameters on the process results, such as oil flow rate, air pressure, MQL nozzle position and distance from the wheel–workpiece contact zone. The current study aims to show through experiment and modeling, the effects of the above parameters on grinding performance such as grinding forces and surface roughness. The results show that the setting location of the nozzle is an important factor regarding the effective application of MQL oil mist. It has been shown that optimal grinding results can be obtained when the MQL nozzle is positioned angularly toward the wheel (at approximately 10–20° to the workpiece surface). In addition, it is found that the efficient transportation of oil droplets to the contact zone requires higher mass flow rate of the oil mist towards the grains flat area and longer deposition distance of an oil droplet. Applying the new setup, considerable reduction in the grinding forces and surface roughness has been achieved. |
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