Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Evaluation of tool wear with internal cooling channels in machining gray cast iron
Submission Author:
Pedro Henrique Pires França , MG , Brazil
Co-Authors:
Pedro Henrique Pires França, Lucas Melo Queiroz Barbosa, Felipe dos Anjos Rodrigues Campos, Gustavo Henrique Nazareno Fernandes, Paulo Sergio Martins, Marcio Bacci Da Silva
Presenter: Gustavo Henrique Nazareno Fernandes
doi://10.26678/ABCM.COBEM2021.COB2021-1598
Abstract
Due to the competitive scenario that the industries live, the search for better products ends up being the main focus of corporations. However, this technological dispute impacts the environment, which over time has been degrading more and more. Thus developed the concept of the triple bottom line (3BL), which is composed of three pillars: environmental, aiming to reduce the impacts on the environment; social, aiming at the safety and wellbeing of the employee, in addition to the economic, which aims at financial viability. The cutting fluids have a great importance in machining, such as cooling and lubrication, but it generates problems in the three strands triple bottom line. On the environmental side, cutting fluids are difficult to discard due to their constituents, such as mineral oils. In the social sphere, cutting fluids that are harmful to human health, such as fungicides and bactericides, which can cause serious problems over the years, such as allergies and respiratory problems. The cost of fluids is high, reaching 17% of the total machining cost in automobile industries, encompassing both the cost of obtaining, maintaining and disposing. This work aims to study a cooling system alternative to cutting fluids, which may be more advantageous in some industrial applications. Cooled water will be circulated at a temperature close to 2 ºC inside the tool, through previously defined galleries in order to remove heat from the inside of the tool in a closed system. Two variables were evaluated, cutting speed of 80 m/min and 125 m/min in addition to the cooling system, which was dry machining, or with an internal cooling tool. A feed of 0.095 mm/rev and a depth of cut of 2.00 mm was set. According the results were found that the use of internal cooled tools can improve the wear.
Keywords
sustainability, cutting fluids, cooled tools, Wear, gray cast iron
