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TOOL WEAR IN MAGNETIZED DRILLING PROCESS

This paper deals with the mechanisms governing influence of magnetic field on wear resistance of cutting tools in drilling process. The results show that the rate of crater wear of both HSS and carbide drills submitted to a high d.c magnetic field intensity, is drastically reduced compared to the one obtained without magnetisation. Moreover, opposite variations of thrust force have been recorded in the presence of magnetic field when 0.38% carbon steel work material were drilled with HSS and carbide tools. These results suggest that even the magnetic effect seems to be manifold, it can be basically grouped into two categories (i) a change in the cutting mechanics (ii) a material properties variation of workpiece and tool.