Performance of MQL technique with different dilutions in grinding of austempered nodular cast iron using CBN grinding wheel

• Grant number: 20/06038-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: August 01, 2020
• End date: July 31, 2021
• Field of knowledge: Engineering - Mechanical Engineering - Manufacturing Processes
• Principal Investigator: Eduardo Carlos Bianchi
• Grantee: Andrigo Elisiario da Silva
• Host Institution: Faculdade de Engenharia (FE). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

The world market is currently in great demand for the development and improvement of new materials and products. Also, it is increasingly necessary to apply sustainable technical applications and increase job security by companies and industries. In this regard, the use of nodular cast iron is more and more frequent in several areas of mechanical engineering, since the material is endowed with properties that are equipped with steel, but with the advantage of having a low manufacturing cost. Besides, new machining and cooling techniques have been used in recent years, reducing the maximum consumption of cutting fluids widely used in industries. These fluids are related to several health issues for operators and also pose great risks to the environment. One of the most accepted options today is the use of the minimum quantity of lubricant (MQL) technique as a method of lubrication and cooling. The technique consists of applying a small amount of lubricating oil mixed with compressed air, thus corroborating for a massive reduction in the use of cutting fluids during machining. However, MQL has disadvantages mainly related to its low cooling capacity of the cutting surface during the operation, which, in large part, is caused by the use of pure oil. Thus, one way to minimize these problems is to add water to the mixture, increasing the capacity of the fluid to remove heat from the surface. Allied to this, a replacement of the applicable grinding wheels by CBN's super abrasives (cubic boron nitride) has been increasingly recurrent in the industry, since the auxiliary change to improve the grinding process, producing parts with superior quality. This work aims to compare the performance of nodular cast iron grinding, using an MQL technique diluted in the proportions 1: 0, 1: 5, 1:10, and 1:20 oil-water, with the results of using the conventional method lubrication, using CBN super abrasive wheel. For this purpose, the following output parameters will be studied: arithmetic mean roughness (Ra), circular deviation, diametrical grinding wear, acoustic emission, optical microscopy, microhardness, and tangential cutting force. The ultimate goal is to expand knowledge in the area of rectification, contributing to the expansion of science and progress in solving problems in society.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE MORAES, DOUGLAS LYRA; LOPES, JOSE CLAUDIO; ANDRIOLI, BRUNO VICENTE; MORETTI, GUILHERME BRESSAN; DA SILVA, ANDRIGO ELISIARIO; DA SILVA, JEAN MACHADO MACIEL; RIBEIRO, FERNANDO SABINO FONTEQUE; DE AGUIAR, PAULO ROBERTO; BIANCHI, EDUARDO CARLOS. Advances in precision manufacturing towards eco-friendly grinding process by applying MQL with cold air compared with cooled wheel cleaning jet. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, v. 113, n. 11-12, MAR 2021. (20/06038-3, 19/24933-2)

DA SILVA, ANDRIGO ELISIARIO; CUESTA, JORGE LUIZ; LOPES, JOSE CLAUDIO; DE MORAES, DOUGLAS LYRA; GARCIA, MATEUS VINICIUS; FONTEQUE RIBEIRO, FERNANDO SABINO; DE MELLO, HAMILTON JOSE; DE ANGELO SANCHEZ, LUIZ EDUARDO; AGUIAR, PAULO ROBERTO; BIANCHI, EDUARDO CARLOS. Grinding behavior of VP50IM steel using green and black silicon carbide compared to aluminum oxide wheel under different feed rates. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, v. 117, n. 9-10, AUG 2021. (18/22661-2, 19/24933-2, 20/06038-3)