Mechanical and tribological properties of ice-bonded abrasive polishing tools

Abstract

This article covers the efforts on characterising ice-bonded abrasive polishing tool in terms of the mechanical and tribological properties such as hardness, coefficient of friction, and wear rate. These studies were attempted on the tools prepared at different temperatures ranging from −10 °C to 0 °C with a view to identify the condition suitable to prepare ice-bonded abrasive polishing tool for effective polishing of Ti–6Al–4V alloy specimen. It also presents the methods adopted to determine various properties of ice-bonded abrasive polishing tool. Hardness was estimated from the measured penetration depth of cone shape indenter into the tool, coefficient of friction was determined from the change in power drawn by the motor rotating the tool mould, and wear behaviour of tool was assessed from the melting rate of the tool determined from the change in height of ice-bonded abrasive polishing tool at different stages of polishing. From the results of this study, it is clear that ice-bonded abrasive polishing tool prepared at −4 °C has possessed sufficient hardness, coefficient of friction, and reasonable wear rate suitable for polishing of Ti–6Al–4V specimens. This article also covers the details of low-temperature coolant supply unit developed to prepare the ice-bonded abrasive polishing tool at any desired temperature between 0 °C and −40 °C and thus to maintain it for a long time. Polishing studies with such ice-bonded abrasive polishing tool showed 72% improvement in finish after 90 min of polishing of Ti–6Al–4V specimen with tool, prepared at −4 °C.

Vibration Analysis of the Non-abrasive Cryogenic Polishing Experimental Devices

“…S Rambab et al prepared ice-bonded abrasive polishing tools at temperatures from 0°C to -40°C and carried out polishing experiments on Ti-6Al-4V samples. The results show that Ti-6Al-4V samples were polished 72% by the polishing tool prepared at -4°C after 90 minutes [7] . Professor Wang Lijiang from Jilin University has taken deep research on non-abrasive cryogenic polishing [8][9] .…”

Lubricating effect of graphene during ultra-precision mechanical polishing by atomic scale simulation

“…6–8 Therefore, the fundamental understanding of the surface/sub surface damage characteristics of monocrystalline silicon in the polishing process is the premise to further improve the surface quality of monocrystalline silicon and find a better polishing process. Rambabu and Ramesh 9 investigated the influences of different machining temperature on mechanical and tribological properties of alloy with abrasive polishing under the experiment. In recent years, extensive research efforts have been devoted to exploring different methods to study the ultra-precision machining process.…”