State of the Nickel Alloy Surface Layer After Grinding with a Minimum Quantity Lubrication

Abstract

Modern trends in mechanical engineering are associated with the introduction of green technologies, in particular the use of a minimum quantity lubrication (MQL) in abrasive processing operations. However, due to the low cooling capacity of this technology, the use of cold air (CAMQL) is used increasingly often. This article summarizes the results of comparative tests of the application of this technology, using soy oil as a lubricant. The properties of the surface layer of a nickel alloy obtained after grinding have been studied using electron microscopy, X-ray diffraction analysis, and evaluation of the electron yield by the Kelvin probe method. It was found that when using CAMQL, there is a decrease in oxidative and adhesive processes, while the level of micro-stresses in the surface layer is reduced twice. The results obtained indicate an improvement in the quality of the surface layer when grinding a nickel alloy with CAMQL.