Preparation, Microstructure Evaluation and Performance Analysis of Diamond-Iron Bonded Magnetic Abrasive Powder

Abstract

The customary edged tool for machining is uneconomical for harder and hard to machine materials and furthermore the level of surface finish accomplished is not that great. As of late, a lot of consideration in mechanical engineering has been centered on finishing tasks. Not many investigations have been accounted for till date on the advancement of substitute magnetic abrasive powder (MAP). In this paper, to improve the finishing performance, the abrasive powder were prepared by mechanical alloying of diamond powder and iron (Fe) powder, compacting these with universal testing machine (UTM) and then sintered at different temperature in a sintering machine in an inert gas (H2) atmosphere. These compacts were crushed and sieved to obtain various sizes of MAP. This abrasive powder were micro-structurally examined. The results indicate that the densification increases and porosity decreases with increasing temperature. Moreover, the prepared bonded MAP has potential performance as a new MAP for fine finishing in Magnetic Abrasive Flow Machining (MAFM) process.

Features of mechanical processing of aluminum alloys

“…Based on the listed features of processing aluminum alloys, various methods of abrasive processing were considered as a method of final processing [7,8]. With the current technical progress, a wide range of enterprises have an urgent need for such a method of final surface treatment of the workpiece, which will provide a low surface roughness Ra (up to 0.01 microns) [9].…”

Finishing of Tubes using Bonded Magnetic Abrasive Powder in an Abrasive Medium

“…The particles produced from this technique are moulded at high pressure and high temperature inside an inert gas environment. The subsequent compacts are then crushed and sieved into a particular particle size [6,7]. The crushing of compacts brought about the irregular shape of MAP and the improvement of surface finish quality was limited because of the nonuniform depth of cut.…”