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Experimental Study of the Ionic Liquids Application in the Minimum Quantity Lubrication System for Drilling P20 Steel

Mostafaloo, Mohsen | 2019

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51585 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Akbari, Javad
  7. Abstract:
  8. This study investigates the application of ionic liquids as a lubricant in the minimal lubrication system for P20 steel drilling. due to the wide use of cutting fluids in machining processes, it is important to research in this regard to reduce emissions of pollutants, reduce friction, and consequently reduce energy consumption and machining costs. in recent years, ionic liquids have been considered as a new lubricant due to the structure and composition of the special chemical in the fields of: bearings, metal forming, etc. however, in the application of ionic liquids as fluids In the process of machining, very little research has been done. Therefore, deserves that examining the effect of using various types of ionic liquids in the process of drilling. in this study, the minimum quantity lubrication (MQL) has been used for less cutting fluids use. P20 steel drilling was performed in different lubrication conditions: dry, immersed, MQL without adding ionic fluid, MQL with adding 2% volumes of four different ionic liquid types inside the 6046 oil. in the experiments, the drill speed was 400 rpm and the feed rate was 50 mm / min and the depth of each hole is 12 mm, and each lubrication mode was about 15 holes. finally, for analyzing the effect of using ionic liquids in the minimum lubrication system, test output parameters such as vertical force, torque, roughness and wear of tools were measured and reported. by analyzing the results, it was found that the mean of vertical and torque power, when used with BMIM-BF4 ionic liquid, decreased by about 21% and 25%, respectively, and the surface roughness has decreased by 51%. Also, with the addition of BMIM-BF4 ionic fluid in the minimal lubrication system, in spite of a very low compression rate compared to immersion, the results are almost the same as the immersion, indicating the efficiency of ionic fluid BMIM -BF4 is an additive lubricant
  9. Keywords:
  10. Lubrication ; Minimum Quantity Lubrication ; Machining ; Ionic Liquids ; Hole Drilling

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