Research on the Properties of Resin Bond Wheel Cured by Ultraviolet Light

摘要

The Ultraviolet (UV) cured resin bond abrasive tools have been studied and proved to have substantial advantages over conventional abrasive tools. The properties of abrasive-mixed resin would affect the tool performance and accordingly the machining efficiency. Therefore, in this paper, the influences of exposure time duration under the UV light and diamond concentration on the properties of abrasive-mixed resin specimen were investigated. It was found that, generally, the cured depth and mechanical strength of the specimen increase with the exposure time but decrease with the abrasive concentration. A significant effect of curing time on the properties of abrasive-mixed resin was observed when the diamond concentration is 12.5 wt.%. UV cured diamond wheels having the concentration of 12.5 wt.% were manufactured with three curing time durations (40, 60 and 80 seconds) respectively. The effect of curing time on the wheel performance was studied. The experiment results show that the average surface roughness (RA) of the workpiece obtained by the wheel with the curing time of 80 s is the smallest while the highest RA is obtained by the wheel cured for 60 s. The change of RA can be explained by the relation between the tensile-strain relation and the exposure time of the abrasive-mixed resin and it can be concluded that the tensile strength and percentage of elongation have effects on the performance of the wheel while the latter has a dominant influence.