ENHANCED WEAR RESISTANCE AND TOOL DURABILITY USING MAGNETIZATION

摘要

This paper aims to show the possibility of the use of a magnetic field as a mean of tool wear control. The investigation of the dynamic contacts submitted to an applied magnetic field has revealed that the durability of both the sliding and cutting contacts can be improved depending on the magnetic field intensity and the pressure contact. The better tribological performance of magnetized cutting tools result in both increased turning speed range of cutting and their durability. Let's consider the mechanisms of the magnetic effects on the increase of the HSS tools durability. The increase of materials hardness, which reduces material transfer from the tool surface to the work-piece, is the first effective step to reduce abrasive-wear. Simultaneously, the magnetic action initiates diffusion process, resulting in structural-phase change and formation of a thin friction layer with high chemical stability. This is a second step to decreases adhesive-wear. The start-up and activation of these mechanisms are crucial in order to reduce the tool wear and increase its durability.