PLENARY: FUNDAMENTALS OF ELID TECHNOLOGIES WITH APPLICATION TO SAPPHIRE FINISHING

 

Ioan D. Marinescu, Ph.D

University of Toledo, Ohio, US & Asian Institute of Technology, Thailand

 

Abstract

 

Electrolytic In-Process Dressing (ELID) grinding is an efficient technique that uses a metal-bonded diamond grinding wheel in order to achieve a mirror surface finish, especially on hard and brittle materials. The system is simple and it can be adapted to any grinding, or even honing machine. The advantage is that this dressing system is in process and it is not necessary to stop the grinding in order to do the dressing. Another advantage is that the grit size of the diamond can be very small, at submicron level. This points out at the fact that ELID grinding can replace lapping and polishing in many cases.

Sapphire is a hard and brittle material difficult to machine. There are many applications of the sapphire in the semiconductors industry, optic and military application. The paper presents the first compressive study of ELID grinding of sapphire with emphasis on material removal rate and the surface finish. A model for both outputs of the study were establish in order to optimize the process and to use it in industry

 

 

About the Speaker

 

Is  a  Professor  of  Mechanical,  Industrial  and  Manufacturing Engineering at the University of Toledo. He is also the Director of the Precision  Micro-Machining  Center  of  the  College  of  Engineering (www.eng.utoledo.edu/pmmc) of the same University. He has a PhD in Manufacturing Processes, a Honorary Doctorate from University of Iashi, Romania, and is member of numerous international professional organization:  JSPE,  SME,  ASME,  ASPE,  CIRP,  IDA,  ASAT, NAMRI.

 

Professor  Marinescu  is  author  of  more  than  15  books  and  over  300  technical  and  scientific papers. He gave lectures and workshops in more than 40 countries around the world. Also, he is the Executive Director and Co-Founder of the American Society for Abrasive Technology.Dr. Marinescu founded ten year ago, his own company: Advanced manufacturing Solutions Co., LLC,  a  company  specialized  in  consulting,  R&D,  Manufacturing  and  Trade.(www.interams.com) He is the President and CEO of this company.