Magnetic Abrasive Finishing (MAF) is an advanced finishing method, which improves the quality of surfaces and performance of the products. Surface is finished by removing the material in the form of microchips by abrasive particles in the presence of magnetic field. The material is removed in such a way that surface finishing and deburring are performed simultaneously with the applied magnetic field in the finishing zone. The mechanism of super finishing in any finishing process is widely focused by the knowledge of forces involved in the process. This paper deals with the detailed parametric study in super finishing of stainless steel SUS 304 thick steel tube. Statistically designed experiments based on Taguchi methods show that weight of abrasive, Revolutions per minute (rpm), magnetic abrasive diameter (Mesh No.) and finishing time have significant effect on the surface roughness obtained. Analysis of experimental data showed that change in surface roughness (ΔRa) was highly influenced by mesh number followed by percentage weight of abrasives, rpm of permanent magnet, and finishing time.
Key Words: Magnetic abrasive finishing (MAF), Design of experiments, Surface roughness.
Fine surface finish is in high demand in a wide spectrum of industrial applications. An internal magnetic abrasive finishing process was proposed for producing highly finished inner surfaces of work pieces. It is difficult to finish advanced engineering materials with high accuracy, and minimal surface defects such as micro cracks, by conventional grinding and polishing techniques. To minimize the surface damage, gentle/flexible finishing conditions are required, namely, a low level of controlled force. Magnetic field assisted manufacturing processes are becoming effective in finishing, cleaning, deburring and burnishing of metal and advanced engineering
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