Análise da qualidade superficial no fresamento do aço AISI P20 com utilização de ferramentas com tratamento e sem tratamento do gume

Abstract

This work addresses the application of drag polishing on carbide end mills, emphasizing the importance of machining processes in the global production and economic chain. With the constant evolution of technology in machining equipment, it is crucial to ensure that tools can withstand the loads applied during machining processes. The need for high production rates and competitiveness drives the search for more efficient and reliable tools, processes, and equipment, providing study opportunities in various areas such as tools, materials, machines, processes, removal strategies, and cutting fluids. In the context of tools, this work focuses on the effects of tool preparation through abrasive media drag polishing. The chosen material for the tests is SAE P20 steel, widely used in molds and dies, especially for polymeric materials. Considering changes in the surface area, known as surface quality, caused by contact with polymeric materials, the study includes experimental tests comparing original tools and tools polished by the drag polishing method with abrasive media. One methodology involves performing a design of experiments (DOE) to assess whether the values generated by the system can be computed by the machining equipment. After this validation, machining is performed on different parts of the specimen, using the data generated by the DOE. The analysis of the specimen includes an evaluation of the roughness to examine the surface characteristics and the surface quality resulting from the machining. This study contributes to the advancement in the understanding of the effects of tensile polishing on carbide milling cutters, providing valuable data on the surface quality of specific materials, such as SAE P20 steel. The results obtained demonstrate that the cutting edge treatment resulted in improvements of approximately 12%, but it was not the predominant factor for the surface quality of the machined material. [resumo fornecido pelo autor]