Ultrafine grained steels micromilling

• Grant number: 12/13363-1
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: October 01, 2012
• End date: January 31, 2013
• Field of knowledge: Engineering - Mechanical Engineering - Manufacturing Processes
• Principal Investigator: Renato Goulart Jasinevicius
• Grantee: Cleiton Lazaro Fazolo de Assis
• Supervisor: Yusuf Altintas
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Institution abroad: University of British Columbia, Vancouver (UBC), Canada
• Associated to the scholarship: 10/06140-0 - Surface integrity evaluation of hard machinability materials in high performance and accuracy milling, BP.DR

Abstract

It is proposed in this research project to evaluate the effect of micromachining with high speed cutting on surface integrity, chip formation and cutting specific energy of materials with ultrafine grains. The proposal is to investigate the mechanisms of chip formation of the type quasi-shearing-extrusion, defects in the machined surface and quantification of the surface finishing of parts, and also the cutting specific energy in relation to the variation of the feed per tooth of the tool. Micromilling tests will be based on the use of micromachining a center of ultra-high speed Mitutoya CMM. Micromachining operations selected will be the end-milling without using cutting fluid. The micromills of 0.8 mm diameter, coated with a PVD-TiN and PVD-TiAlN, to be used are compatible with the purposes of research to withstand the high speeds required for the testing of high speed cutting. A dynamometer for measuring forces in micromachining will also be used for subsequent calculation of the specific cutting energy. The cutting parameters were defined as studies of the doctorate thesis in progress and supported by FAPESP (Proc. 2010/06140-0). (AU)

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 ASSIS, CLEITON L. F.; JASINEVICIUS, RENATO G.; RODRIGUES, ALESSANDRO R.. Micro end-milling of channels using ultrafine-grained low-carbon steel. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, v. 77, n. 5-8, p. 1155-1165, MAR 2015. (12/13363-1, 11/10659-4, 10/06140-0)