Stainless steel materials have been used in many fields such as automotive, aviation, medical industries, etc. In addition, these materials are classified as difficult-to-cut materials due to low thermal conductivity and work-hardening tendency. Therefore, studies on machining of these materials have been performed in order to understand the basic of the process. In this study, surface roughness and burr height were investigated in MQL (Minimum Quantity Lubrication) milling of AISI 430 ferritic stainless steel.
The surface structures of asymmetric cellulose acetate membranes prepared by the phase inversion method were investigated by the atomic force microscopy (AFM). The differences in the surface morphology have been expressed in terms of four types of roughness parameters such as; roughness average (Sa), root mean square roughness (Sq), surface skewness (Ssk), and surface kurtosis (Sku). The association of the roughness characteristics with the salt rejection performance has also been investigated.