Recent advancements in abrasive flow machining and abrasive materials: A review

Abstract

Abrasive flow machining is a novel machining technique to polish, deburr and radius difficult-to-accessible surfaces. In this process small masses of work material are detached by passing semi-solid, abrasive dispersed putty (for sealing glass) or dough under pressure through or across the work piece. Number of cycles, Extrusion Pressure, flow volume, grit size, media, and work piece geometry are the prior machining factors that improve the surface finish. Majority of researchers are focusing to form hybrid processes by unification of abrasive flow machining process with other non-conventional processes. By implementation of hybrid processes materials with complicated shapes which are difficult to machine have been possible. It finds application in modular head of hip joint, extrusion die, aerospace, pharmaceutical and automobile industry. This paper presents the past research on different developments in hybrid Abrasive flow machining processes, different rheological properties of abrasive flow machining medium, findings of different process parameters and also review the concluding results of numerous materials such as brass, aluminium and mild steel. This paper also gives directions to the future aspects of abrasive flow machining by including organic abrasive laden media which will be beneficial to protect our environment.