Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
INFLUENCE OF CUTTING FLUID TYPE ON CUTTING REGION TEMPERATURE DURING GRINDING OF BEARING STEEL
Submission Author:
Raphael Lima de Paiva , PI
Co-Authors:
Raphael Lima de Paiva, Rodrigo Ruzzi, Felipe dos Anjos Rodrigues Campos, Marcelo Kuroda, Rodolfo Oliveira, Washington Martins da Silva Jr., Rosemar Batista da Silva
Presenter: Felipe dos Anjos Rodrigues Campos
doi://10.26678/ABCM.COBEM2021.COB2021-1646
Abstract
Bearing components require tight dimensional tolerances and superior finishing which are commonly achieved through grinding process. However, grinding is known as a high specific energy process, that means, a great amount of energy is consumed to remove a small volume of material. Furthermore, most of this energy is transformed into heat at the contact zone, thereby increasing the local temperature, especially when employing conventional abrasive grits, such as white alumina for instance. Also, the development of high temperatures at the cutting zone adversely affects workpiece’s surface integrity. In this sense, the selection of grinding conditions, including the type of cutting fluid, plays an important role to maintenance of component’s integrity. Thus, this work sought to evaluate the influence of two different vegetable-base cutting fluids (semisynthetic and synthetic) delivered by conventional technique (flood) on cutting region temperature during grinding of the hardened SAE 52100 steel under two radial depth of cut values (ae = 10 µm and 30 µm). Surface roughness and hardness below ground surface were the output variable evaluated. The results showed that, although no significant differences were observed when grinding at the soft cutting condition (ae = 10 µm), when grinding with the semisynthetic fluid contributed to reduce cutting region temperature by about 30% in comparison to the use of synthetic fluid at the highest radial depth of cut (ae = 30 µm). Also, under this severest condition, grinding with the semisynthetic fluid contributed to reduce surface roughness and hardness variation.
Keywords
Grinding, Cutting fluid type, Bearing steel, Radial depth of cut, Temperature, Surface finish
