Análise sobre a utilização de mídia alternativa para a técnica de tratamento de gume por arraste

Abstract

Large-scale productions require high quality and reliability to ensure effective results during the straight end milling process. In these circumstances, early wear of the carbide tool is directly related to the reduction of the useful life and the effects provided on the surface quality. Through the preparation of the cutting surface and modification of the microgeometry of the edge, it is possible to obtain satisfactory results with the use of methods of surface treatment of tools. Among the different types of preparation, one can mention the edge treatment by the drag technique with the use of alternative media composed of zirconite (ZrSiO4) and polyamide 66 grains with 30% fiber, keeping the granulometry range between 0. 43 and 1.2 mm. The cutters treated with the drag technique were analyzed before and after polishing and subjected to milling tests on the specimen, resulting in 15 and 20 m of machined length, which means a reduction of 60.5 and 47.4 % in relation to the reference cutter data. Finally, the measured results for maximum flank wear, machined length and surface quality (roughness and texture) were compared with results extracted from previous studies of milling cutters in the resharpened condition, milling cutters polished with OTEC commercial media and with the milling cutters treated with the latest alternative peanut shell media. [resumo fornecido pelo autor]