Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
ANALYSING THE EFFICIENCY OF THE COMPRESSED AIR CLEANING ALLIED TO THE ADDITION OF WATER TO THE MQL IN GRINDING THE AISI 4340 STEEL WITH CBN
Submission Author:
Eduardo Carlos Bianchi , SP
Co-Authors:
Bruno Sato, José Claudio Lopes, Luiz Sanchez, Paulo Aguiar, Eduardo Carlos Bianchi
Presenter: Bruno Sato
doi://10.26678/ABCM.COBEM2017.COB17-2791
Abstract
The implementation of the Minimum Quantity of Lubricant in the grinding process is not practicable for two reasons: the insufficient cooling effect and the intensification of the clogging phenomena. This research aim for adapt the MQL technique in the grinding process. Therefore, water is added to the lubricant to increase the technique refrigerating capacity, boosting the heat dissipation when it evaporates. In this research, the compressed air cleaning was adopted, its advantages were: no utilization of cutting fluid and the method does not present the hydraulic brake. The water influence in the MQL technique was evaluated conducting trials diluting the oil in water in different proportion: 1:1, 1:3, 1:5. To analyze the efficiency of the compressed air wheel cleaning method in expelling the chips from the grinding wheel pores, trials were done using the wheel cleaning allied to the MQL with water and were compared with the conventional cooling method. The output variables analyzed were: surface roughness, roundness deviation and consumed power. The obtained results showed that the addition of water to the cutting fluid used in the MQL technique had a positive effect on the output parameters. It was noticed the occurrence of the clogging phenomenon during the grinding trials. The results got better when the grinding wheel cleaning system with compressed air was used, demonstrating the efficiency of the method. The addition of water to MQL allied to the cleaning system provided results comparable to the results obtained when the conventional cooling method was used.
Keywords
Cylindrical external plunge grinding, MQL with water, compressed air wheel cleaning
