| dc.description.abstract | This study introduces an Abrasive Jet Polishing (AJP) technique to improve the polishing performance. Furthermore, a Gas Atomization technique is employed to fabricate Wax-coated #3000SiC particles, investigations to establish the optimal AJP parameters for the surface finishing of different SKD61 mold steel specimens shape and processed.
Taguchi design experiments are performed to identify the optimal AJP parameters when applied to the polishing of SKD61 mold steel specimens. Using #2000SiC particles were mixed with water wax and pure water in a ratio of 500: 1000: 1500 (Water Wax: SiC particles: Pure Water). Following 90 minutes of blasting, the surface roughness is improved from an initial value of 7.74 μm Rmax to 0.45 μm Rmax, thereby obtain a mirror-like surface finish. AJP polishing of the micro-grooving SKD61 surface, Linear type micro-channel SKD61 surface and Curvee type micro-channel SKD61 surface using #3000SiC particles mixed with water wax and pure water in the ratio 500:1000:1500 (Water Wax: SiC particles: Water) reduces the surface roughness from an initial value of Rmax = 2.32 μm, Rmax = 3.45 μm and Rmax = 3.58 μm to a final value of Rmax = 0.40 μm, Rmax = 0.43 μm and Rmax = 0.45 μm within 30 minutes, 60 minutes and 60 minutes, respectively. Gas Atomization system used in this study to fabricate the Wax-coated #3000SiC particles. AJP polishing of the ground SKD61 surface using wax-coated #3000SiC particles mixed with water wax and pure water in the ratio 500: 1000: 1500 (Water Wax: SiC particles: Water) reduces the surface roughness from an initial value of Rmax = 3.26 μm to a final value of Rmax = 0.31 μm within 45 minutes. In addition, using wax-coated #3000SiC particles of the micro-grooving SKD61 surface, Linear type micro-channel SKD61 surface and Curvee type micro-channel SKD61 surface reduces, the surface roughness from an initial value of Rmax = 2.32 μm, Rmax = 3.45 μm and Rmax = 3.58 μm to a final value of Rmax = 0.31 μm, Rmax = 0.35 μm and Rmax = 0.40 μm within 30 minutes, 60 minutes and 75 minutes, respectively. Overall, the results show that the use of wax-coated abrasive particles reduces the polishing time and achieves an improved surface finish. | en_US |