Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
CONTRIBUTION TO THE STUDY OF ROUGHNESS AND ELECTRICAL POWER IN THE GRINDING OF STAINLESS STEEL USED FOR MOLDS AND DIES
Submission Author:
Marcus Vinicius de Oliveira , MG
Co-Authors:
Marcus Vinicius de Oliveira, Elhadji Ba, Bruno Souza Abrão, Amanda Souza Abrão, Alcione Reis, Mark Jackson, Rosemar Batista da Silva
Presenter: Rosemar Batista da Silva
doi://10.26678/ABCM.COBEM2023.COB2023-2067
Abstract
Grinding attract attention in the metalworking industry as it allows obtaining parts from the automotive sector, among others, whose surface texture and combination of low dimensional and geometric deviations cannot be achieved by another machining process with a defined geometry tool. Similar to what is studied in other machining process, testing input parametersis essential to determine the range of values that can be used for a particular workpiece-grinding wheel pair. In grinding, the most important parameters are the radial depth of cut and workspeed, because they directly affect the equivalent chip thickness, and consequently the surface finish of the workpiece. The relationship between the improvement of the finish and the cost of the process is usually exponential, so it is important to select cutting parameters that meet the design roughness. Another parameter is the grinding power that influences the costs of the process and which is often neglected to be monitored. In this context, this work presents a contribution on the influence of radial depth of cut and workspeed on the roughness parameters Ra, Rt, Rz and Rq, and the electrical power consumed during the tangential flat grinding process of VP 80 stainless steel. The tests were carried out with a white aluminum oxide grinding wheel and using a semisynthetic cutting fluid that was applied in flooding. The grinding wheel speed and the machining depth remained constant, while the radial depth of cut (ae) and the workspeed (vw) varied in two levels, 15 and 30 µm; 2.7 and 7.5 m/min respectively. The results indicated that all roughness parameters were higher when grinding was performed combining the highest ae and vw. The main contribution of this work was that it is also necessary to monitor the consumed power of the process, because even if a finish practically does not vary when doubling the radial depth of cut, for a lower workspeed, the electrical power suffers an increase of 270 %.
Keywords
Grinding, Radial depth of cut, Workspeed, Roughness, Electrical power
