Abstract:

Metal-working fluids are used in machining and grinding operations to cool the tool and work piece, reduce the friction between the tool and work, improve the surface integrity of the work piece and increase tool life and productivity. The removal of oil mists from air streams is very important in a wide range of industrial applications, and filtration is by far
the most effective method for this task. This article presents the results of changes in the fractional efficiency of the filtration process of the test aerosol through multistage filtering systems of different thickness and miscellaneous structural characteristics in the cross-section. The efficiency of filtration through multistage filtering systems was tested with the use of DEHS and DOP aerosol. Research results indicate the functional dependence of filtering properties on the structural parameters of nonwovens and machining process parameters, as well as on the physicochemical parameters of liquid aerosols. This may be of essential importance in forecasting the use of multistage filtering systems as filtering media for a given process of liquid aerosol filtration, given the maintenance of the most advantageous filtration conditions, i.e. high efficiency of filtration and low resistance of aerosol flow.