AISI 4340 STEEL GRINDING WITH GEOMETRY INTERRUPTED BY CONVENTIONAL GRINDING WHEEL
Marcel Yuzo Kondo1; MANOEL CLEBER DE SAMPAIO ALVES1; Eduardo Carlos Bianchi2; Cleverson Pinheiro1; HAMILTON JOSÉ DE MELLO2; José Vitor Candido de Souza3; Paulo Roberto de Aguiar4
1 UNESP-FEG/GUARATINGUETÁ; 2 UNESP-FEB/BAURU; 3 Unesp-FEG Guaratinguetá; 4 Unesp-FEB- Bauru
doi:10.20906/CPS/COB-2015-0133
Resumo
Grinding is an abrasive machining process widely used in the metal industry as it provides getting tight geometric and dimensional tolerances. Grinding produces an excessive amount of heat in the cutting area requiring cooling and lubrication systems with cutting fluids. The grinding process has been improving through the development of new materials for tools, most modern machine tools with greater rigidity with higher cutting speeds, with deformation compensation. However, little is known about the grinding that involves interrupted cut along with the use of Minimum Quantity Fluid systems (MQF), replacing conventional refrigeration system using cutting fluid in abundance. This project aimed to study the rectification of AISI 4340 steel using the interrupted cut comparing it to the continuous grinding using both the conventional method of cooling (abundant) and the MQF. The surface quality of machined pieces by obtaining the roughness (Ra parameter), and the power consumed was analyzed. The results show that the interrupted cut repercussions on the wheel damaging the surface finish. With the use of MQF grinding with interrupted cutting has become a good option.
Palavras-chave: Roughness; Power consumed; Interrupted cut; Minimum quantity of fluid; Conventional cooling