CHALLENGES OF MODERN MACHINING PROCESSES ON METALWORKING FLUID COMPOSITION

At machining processes high temperatures and high pressures on contact surfaces between the tool and the workpiece cause unwanted occurrences, such as chips welded to the tool cutting edge, uncontrolled metal microstructure below the worked area, increased tool wear, etc. Application of proper metalworking fluid decreases those tribological effects, and also increases process productivity. At high speed operations there are additional requirements on working fluid properties like are low foaming, low misting and extreme stability. When an emulsion separates, many problems occurs such as decreased tool life, corrosion and rust production, unpleasant odour and scum separation. All this leads to increased costs of total metalworking process. Selection of suitable components for metalworking fluid production can avoid problems and extend the service life of working fluid. In this paper are presented laboratory examination results of emulsifying metalworking fluid and also application properties at modern metalworking machine.