ESTUDO DO PROCESSO DE ROSCAMENTO POR CONFORMAÇÃO E USINAGEM NO AÇO AISI 304

Abstract

The threading process is one of the most complex among the machining processes. Virtually all components of a mechanical assembly require threaded parts. External threading is one of the most used and is performed most of the time, applying tools with simple profile. However, little is said about thread rolling, this process is a good alternative for those products that aim at a better surface finish and greater mechanical resistance due to the reduction of grains in thread threads. This work shows through experiments the good surface quality and the orientation of the grains during the thread forming process. Tests were carried out with 18 samples using different machining and forming parameters. Among the samples, two were chosen with the highest cutting speed for evaluation. The material used was the AISI 304 alloy due to its ease of conformation. The results showed an excellent surface finish on the threads of rolled threads, whereas the machined threads showed small vibrations of the tool in the threads. Analyzing the results of macrography, he noticed an orientation of the grains in the direction of the fillets and their compaction.