resumo
During machining processes, a large amount of heat is generated, especially in the cutting zone, due to the deformation of the material and to the friction of the chip along the surface of the cutting tool, resulting in, a wear increase and consequent reduction of tool life. Surface texturing can help improve these tools tribological performance by increasing their load carrying capacity, providing a more efficient lubricant supply at the tool-chip interface and reducing the tool-chip contact area. In this context, the fabrication of cross-hatched micropatterns on WC-Co cutting tools by laser surface texturing of green compacts is proposed, aiming to improve these tools performance and life. This work is focused on evaluating the morphology of the chip obtained when turning 316L stainless steel with tools textured with different cross-hatched micropatterns, these findings being benchmarked against conventional cutting tools and correlated with the tool wear. For such purpose, morphological characterization using optical and scanning electron microscopy was used. © European Powder Metallurgy Association (EPMA)
categoria
Cutting tools; Morphology; Powder metallurgy; Scanning electron microscopy; Textures; Tribology; Turning; Wear of materials; % reductions; 316 L stainless steel; Chip morphologies; Cutting zone; Large amounts; Laser surface; Machining Process; Micro pattern; Surface-texturing; Tool life; Austenitic stainless steel
autores
Guimarães B.; Fernandes C.M.; Figueiredo D.; Silva F.S.; Miranda G.
nossos autores
