Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Surface finish evaluation of AISI VP 100 after grinding with MQL technique with different flow rates
Submission Author:
Rosemar Batista da Silva , MG
Co-Authors:
Bruno Souza Abrão, Mayara Fernanda Pereira, Cleudes Guimarães, Lurian Souza Vieira da Silva, Rodrigo Ruzzi, Eduardo Carlos Bianchi, Álisson Rocha Machado, Rosemar Batista da Silva
Presenter: Rosemar Batista da Silva
doi://10.26678/ABCM.COBEM2017.COB17-2173
Abstract
Grinding operation is a finishing process often employed when high precision and narrow geometric tolerances are required. These requirements can be achieved only if cutting conditions are properly selected, especially the cooling-lubrication technique. In general, grinding is performed in presence of cutting fluid, however, due to the environmental impacts and costs of the conventional coolant delivery technique (flow rates from 4 l/min to 300 l/min), alternative cooling-lubrication techniques have been developed on restriction of the coolants use. Among the several techniques, Minimum Quantity of Lubricant (MQL) technique has received special attention from machining users because of its advantages in terms of surface quality of workpiece and drastic reduction in use of coolant. In this context, this paper evaluated the performance of the MQL technique to the flood coolant in the AISI VP 100 steel in peripheral surface grinding with conventional aluminum oxide grinding wheel in relation the roughness (Ra and Rz). Input parameters tested were: equivalent chip thickness (0.09 μm, 0.18 μm and 0.27 μm) and flow rate (60 ml/h, 150 ml/h and 240 ml/h). Results showed that the grinding with MQL technique provided lower surface roughness values compared to conventional technique, especially when machining under the intermediary cutting conditions. Also, with exception of heq of 0.09 µm, the MQL technique with the all flow rates tested resulted in lower values of Rz parameter compared to the conventional coolant technique.
Keywords
Grinding, AISI VP 100 steel, MQL technique, Flow rate, equivalent chip thickness, surface roughness
