Exploring the Efficiency of End Milling AISI4140 Alloy Steel with Minimal Quantity Lubrication

[[abstract]]在金屬切削過程，添加切削液是必要的。但切削液對於環境所造成的影響是不容小覷。因此對於切削液的使用，有研究提出乾式切削，但效益有限仍需尋找其他代替方案，而衍生出最小潤滑(Minimum Quantity Lubrication MQL)。MQL藉由高壓空氣噴灑油霧至切削區，達到潤滑效果。MQL對銑削之研究以鋁合金工件為主，因此若能採用合金鋼搭配MQL進行銑削之研究，來觀察MQL對合金鋼的影響，並獲取MQL的加工效益。而對於MQL參數條件，在以往的研究中沒有提出相對之依據。因此本研究採用AISI4140合金鋼應用最小量潤滑進行深入探討。 本文的研究對象以最小潤滑對於AISI4140合金鋼進行端銑削。在銑削過程中，擷取實驗數據，透過比切削能及工件表面精度之量測。以進一步探討MQL之潤滑效益。文中藉由不同的切削油黏度與MQL參數條件，觀察比切削能與表面粗糙度兩者的變化，以獲得較好的表面品質，並有效掌握加工後表面影響，以提供使用者之參考依據。 根據實驗分析得知，當低切深時搭配低空氣壓力與低油量，能獲取較好得表面品質，而高切深時搭配低空氣壓力與高油量亦也如此。對於使用不同切削油黏度，當搭配高黏度切削油，可獲得較細緻的表面品質；反之搭配低黏度切削油與高壓空氣，卻導致表面品質的變異。另外與傳統濕切削進行比較下，發現MQL比傳統濕切削獲取更好表面的精度，因此透過實驗證實MQL可取代傳統濕切削的運用。[[abstract]]In the metal cutting process if is necessary to add cutting fluid But the impact of cutting fluid to the environment is very importamt issue Thus how to use the cutting fluids researcher propose dry cutting but it is not enough of efficiency and must find other method to replace it Minimum Quantity Lubrication (MQL) spray the oil to the range of cutting with high pressure air and obtain the efficiency of lubrication MQL is mainly for the research of milling aluminum alloy Thus if we can milling steel to do the research of MQL to observe the effect of MQL on alloy steel and obtain the processing efficiency of MQL In the past the condition of MQL parameter is no basis in research Thus this study of minimal quantity lubrication AISI4140 alloy application The research target of this paper the research target of this paper is end milling AISI4140 alloy steel with MQL In the milling process discussing the lubrication efficiency of MQL with experimental data specific cutting energy and surface roughness Observing the change of specific cutting energy and surface roughness with different the viscosity of cutting oil and parameter condition of MQL and obtain the better quality of surface It is Efficient to know the effect of process and provide reference information for user According to the result of experiment it can obtain the better quality of surface when using lower depth lower air pressure and lower the amount of oil it is the same result for using higher depth lower air pressure and higher the amount of oil when using high viscosity cutting oil it is can obtain the fine quality of surface but it is opposite result for using low viscosity cutting oil and high air pressure In addition it is compared with traditional wet cutting using MQL can obtain the better quality of surface than traditional wet cutting Thus experimental proof for MQL can replace of the traditional wet cuttin