Godino, L.; Pombo, I.; Sanchez, J.A.; Izquierdo, B. An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process. Metals2018, 8, 557.
Godino, L.; Pombo, I.; Sanchez, J.A.; Izquierdo, B. An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process. Metals 2018, 8, 557.
Godino, L.; Pombo, I.; Sanchez, J.A.; Izquierdo, B. An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process. Metals2018, 8, 557.
Godino, L.; Pombo, I.; Sanchez, J.A.; Izquierdo, B. An Original Tribometer to Analyze the Behavior of Abrasive Grains in the Grinding Process. Metals 2018, 8, 557.
Abstract
Manufacturing of grinding wheels is continuously adapting to new industrial requirements. New abrasives and new wheel configurations, together with wheel wear control allow for grinding process optimization. However, the wear behavior of the new abrasive materials is not usually studied from a scientific point of view due to the difficulty to control and monitor all the variables affecting the tribochemical wear mechanisms. In this work an original design of pin on disk tribometer is developed in a CNC grinding machine. An Alumina grinding wheel with special characteristics is employed and two types of abrasive are compared: White Fused Alumina (WFA) and Sol-Gel Alumina (SG). The implemented tribometer reaches sliding speeds of between 20 and 30 m/s and real contact pressures up to 190 MPa. The results show that the wear behavior of the abrasive grains is strongly influenced by their crystallographic structure and the tribometer appears to be a very good tool for characterizing the wear mechanisms of grinding wheels, depending on the abrasive grains.
Keywords
grinding, wheel wear, wear flat, precision, tribometry, pin on disk
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
