Investigation of flat surfaces wi̇th magnetic abrasive assisted finishing process

With the developing technology, the methods used in the processing of sensitive products are increasing. New surface treatment methods are being developed for aerospace, electronics and medical industries. Machining with magnetic abrasives (MAI) is a new manufacturing method that uses sawdust to remove chips by abrasive and magnetic powders, which are held by the magnetic field in the machined zone. With this method, very high quality finishes are obtained in the machined materials. Since the size of the shavings removed from the surface is micron size, less damage occurs on the surface treated than other machining methods. Machining with magnetic abrasive powder is a method that can be used to process surfaces of parts with complex geometries that are very long and very small in width. These pieces, fine millers, ceramic surfaces, curved surfaces that stones can not reach are examples. While iron dust is generally selected as magnetic powder, silicon carbide (SiC), aluminum oxide powder is used as abrasive. The optimum conditions were investigated depending on the process time, the amount of abrasive and the number of revolutions of the system, the number of magnets. The machining time was 60 minutes, the fixed number of revolutions of the seat was 500 rpm, the distance to the work plate of the magnets was 4 mm, and the number of magnets was 4-8-12. Powder ratios were taken from 50 μm - 100 μm - 150 μm. The powder weights were 55 grams of 𝐹𝑒2𝑂3 powder, 20 grams of SiC powder, 20 grams of 𝐴𝑙2𝑂3 powder, 2.5 grams of SAE 30 lubricant, 2.5 grams of glycerin. Keywords : Magnetic Abrasives, Finishing, Surface Roughness, Surface quality, Polishing, Micro Machining