Utilização de delineamento fatorial fracionado aplicado a otimização do processo de usinagem no desbaste de liga inconel soldada

Abstract

This monography work was elaborated and developed in the machining department of a petroleum and gas company. The machining processes developed are of extreme precision, high complexity and of high cutting strength due to the material types and cladding used. The monography presents the machining process, its many variables, the external and internal influences of the operation, and also the reliability engineering tool applied in the development of this study which needed innumerous experiments in work pieces from the production line. The aim is to optimize the cutting process in the grinding operation of an inconel alloy welded to the base material through the ideal parameters identification for the machining process. Beyond the optimization in the cutting tool usage, there is interest in reducing the work piece manufacturing lead time and consequently reduce operation costs and verify other possible savings. The whole methodology applied is presented and in the last chapters the obtained results show that it is possible to improve the currently used parameters in the machining operation and obtain lead time and cost reductions, and productivity increases.