Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Optimization duplex stainless steel UNS S32205 milling process using control charts
Submission Author:
Bárbara Salvador Barros da Silva , RJ
Co-Authors:
Bárbara Salvador Barros da Silva, Harue Genghini Shibuta, Gustavo Rocha de Queiroz, Thaisy Emanuele Benicio, Leonardo Albergaria, Tarcisio Gonçalves de Brito
Presenter: Bárbara Salvador Barros da Silva
doi://10.26678/ABCM.COBEM2021.COB2021-2253
Abstract
Milling is one of the most used processes in metal machining because it allows for high productivity and low cost. In this scenario, duplex stainless steels UNS S33205 have been gaining prominence for being cost-effective, although their low machinability influences the final product. In order to guarantee the surface quality of the machined parts, it is necessary to have planning and control of the cutting parameters in order to obtain the lowest values of roughness during the process. For this, Statistical Control becomes indispensable for monitoring the variables of the project. Aligned in these conditions, this paper aims to carry out a statistical analysis of the Ra roughness to evaluate the quality of the machined surface in the straight end milling process of duplex stainless steel UNS S32205. Such analysis will be performed using Control Charts and indices for Capacity Analysis, seeking the best condition of the speed rate and the amount of fluid as an input parameter. It was possible to verify moderate stability in the processes with speeds rate of 65 m / min and 70 m / min both for the minimum flow. Despite obtaining points outside the lower control limit, these meant a gain in quality for the project. Only the process with a speed of 70 m / min was able to operate within the specified roughness limits of the part between 0.25 and 0.55 µm.
Keywords
Capacity analysis, Milling. Roughness, Control charts, duplex stainless steel UNS S32205.
