An Experimental Study on Grinding of SiC/Al Composites

Abstract

In this paper, grinding experiments on the machining of SiCp/Al composites using SiC grinding wheel have been carried out. The effect of the grinding parameters on the grinding forces, surface morphology and surface roughness were evaluated. The results indicate that the grinding depth has more significant effect on the grinding force than that of feed speed, and there are many fracture or crushed SiC particles on the ground surface. Therefore, the SiC wheels can be used for rough grinding of SiCp/Al composites.

A review on conventional and nonconventional machining of SiC particle-reinforced aluminium matrix composites

“…The effect of the grinding parameters on the grinding force, as shown in Fig. 18, was investigated by Xu et al [188]. The results indicated that the grinding depth had a more significant effect on the grinding force than the feed speed; with increasing grinding depth and table feed speed, the grinding forces for both the tangential and normal components increased, and the increasing trend was more notable with a higher grinding depth.…”

“…Zhang et al [187] compared the PCD compact (PDC) whisker with the CVD diamond whisker, and found that the PDC wheel had better edge evenness, which led to good machining quality. Xu et al [188] suggested the potential of using SiC wheels for rough grinding of SiC p /Al composites in consideration of their economic advantages. Zhong [189] reported that there was almost no subsurface damage except for rare cracked particles when fine grinding 10% (volume fraction) SiC p /Al composites with a diamond wheel.…”

Surface grinding of carbon fiber–reinforced plastic composites using rotary ultrasonic machining: Effects of tool variables

“…Because total material removal rate (MRR) was kept the same (5.08 mm 3 /s), the average MRR for one grain (MRR 1 ) was increased, leading to the increase in both F 1x and F 1z forces. 3,[42][43][44][45][46] With equations (3) and (4), the decrease rate of active abrasive-grain number might be larger than the increase rate of F 1x or F 1z forces, leading to the decrease in the cutting forces. 27,30,37 .…”

“…Comparing with the two-slot tool, the four-slot tool had less abrasive grains participating in machining, leading to higher tool wear and onegrain MRR 1 (the total MRR was the same, 3.81 mm 3 /s) and then resulting in higher F 1x and F 1z . 3,[43][44][45][46][47][48] Using equations (3) and (4), the increase rate of F 1x and F 1z might play a more important role than the decreasing rate of active abrasive-grain numbers, resulting in the cutting forces using the four-slot tool being higher than using the two-slot tool. 27,30,37 Effects of tool geometry.…”

“…The depth of cut played a dominant role in F z , and larger depth of cut resulted in higher F z force. 3,[45][46] In addition, larger friction force was generated between the outside face of the convex tool and the workpiece. With this case, F z force generated from the convex tool was the highest among these three kinds of tools.…”