Micro Machining of AISI 440C Stainless Steel using Magnetic Field and Magnetic Abrasive Particles

Journal of Modern Processes in Manufacturing and Production

مقاله 2، دوره 3، شماره 2، مرداد 2014، صفحه 17-26   

نویسندگان

Yahya Choopani^{* 1}؛ Mohammad Reza Razfar²

¹MSc,Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

²Assoc.Prof, Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran

چکیده

Magnetic abrasive finishing (MAF) is a micromachining process that uses magnetic field and magnetic abrasive particles to conduct the mechanism of material removal in micro-nanometer scales. In this paper, by an experimental method and statistical analysis, the effects of parameters like working gap, work-piece rotational speed and material removal mechanism (injection of abrasive slurry of Al₂O₃) in the MAF process, on the external surfaces of cylindrical pieces of stainless steel (AISI 440C)were investigated on surface roughness. To do the experiments, a mechanism was designed and constructed. The results of this research show that the working gap and work-piece rotational speedhave a significant effect on the improvement of the surface roughness. It has been indicated that in vitro surface roughness improved 20% as a result of the gap working of 2 mm, workpiece rotational speed of 355 rpm, using the injection of abrasive slurry of Al₂O₃.

کلیدواژه‌ها

Micro machining؛ Magnetic abrasive particles؛ Stainless steel (AISI 440C)؛ Al2O3 abrasive slurry؛ Surface roughness