Increased Machine Tool Productivity Resulting from Coalescing Plate Filtration

This report provides results recorded from the application of a coalescing plate separator to grinding and lathe coolant filtration. Use of the filter and normal recommended practices in monitoring coolants significantly extended coolant life, increased the tool life of carbide inserts and grinding wheels an average of 25'10, and resulted in cleaner machines and coolant sumps. The use of deionized water is discussed. Both synthetic and water soluble coolants were tested with equally favorable results. The ability of this type filter to remove tramp oil and to maintain concentrations less than 0.2% is documented. The level of solid contaminants in grinding was reduced by 50% when compared to alternative filtration methods, and indications are that this measurement is the key to prolonged grinding wheel life. TABLE OF KEY COMPARISONS TOOL LIFE LATHE Material Speed Feed Depth Insert Flank Wear Average Tool l ife Average Time InCreaSe (mm) (minutes) Filtration Tool l i fe (Sfpm) (inlrev) (in) Comparison wlo CPS filtration With CPS in