Reduction of tool wear in metal cutting using external electromotive sources

Tool wear is fully recognized as an important factor in materials cutting. The well-established methods for its control are based either on process optimization, application of lubricant or use of tool coatings to provide wear resistance and low friction. Nevertheless, application of external electromotive force (EMF) sources (e.g. magnetic field) during cutting of material may accomplish this role. Summarized in this paper are results of investigations on tool wear evolution and certain surface phenomena (temperature and chip morphology) observed during cutting contact subjected to an external magnetic field. Noteworthy, is its use for reducing tool wear and improving machinability of materials.