Comparação entre os modelamentos teóricos de temperatura do processo de retificação plana tangencial com as técnicas inversas das temperaturas equivalentes e da seção áurea

Abstract

Grinding is the last process executed in the manufacturing sequence because is a finishing process, so any benefit obtained through the grinding has great value for the entire manufacturing process. One of the main limitations of the grinding process is the thermal damage. So it is important to know the factors that affect the temperature. In the future will compare the theoretical modeling by temperature tangential plane grinding process by the inverse techniques of equivalent temperatures and áurea section, and estimate the flow of heat dissipated to the workpiece may ascertain the maximum increase in surface temperature in the zone contact between the conventional grinding wheel of Al2O3 and the piece of steel AISI / SAE 52100, taking (considering the variables) variables such as the total distribution of heat flow and how it is shaped (rectangular or triangular), the thermal characteristics of the workpiece, and the geometry of the grinding wheel interface / workpiece etc. The problem was solved by using the heat diffusion equation associated with the two-dimensional heat conduction problem in transient direct, using the Finite Volume Method aiming its discretization. In the solution of the inverse problem in heat transfer temperatures used to measured to estimate the heat flux at the interface between the grindstone and the workpiece surface (objective function). Using the techniques of the equivalent temperature and the áurea Section it was possible to estimate heat flux and temperature, also compare the efficiency between them. For the validation of the mathematical model, the temperatures of experimental data is extracted from the literature and compared with the numerical result of the mathematical model, in order to clearly demonstrate the applicability of the methodology chosen for development work.