Papers by Keyword: Polishing Performance

Abstract: In this paper, the comparisons of the polishing performance between prehardened P20 and S45C steels under the different hardness were carried out by using surface grinding, manual polishing and PVA grinding wheel polishing tests. The results show that the surface roughness of the two kind steels decrease with the increase of hardness and the roughness of S45C is lower than that of P20 during the surface grinding test. After polishing process, the surface roughness of the two kind steels decrease with the increase of hardness as well. However, the surface roughness of S45C is higher than that of P20 after both manual polishing and PVA grinding wheel polishing tests.

Abstract: CMP is commonly recognized to be the most effective technique of achieving global planarization. SiO₂ and CeO2 abrasives are the most commonly used in CMP slurries due to their good polish performance. To consider respective_{Subscript text} advantages and synergistic effect, preparation of SiO₂/CeO₂ composite nanoparticles with core/shell structure have become a hot topic in CMP field. We introduced the preparation technology of SiO₂/CeO₂ and their applications in CMP in recent years.

Abstract: Based on the cutting and polishing comparison experiments, the machinability and polishing performance of 1CrMn2MoVTiB non-quenched and tempered plastic mould steel were studied. The cutting comparison experiment showed that the plastic mould steel that had developed recently was better than P20 both in surface roughness and cutter wear; and the polishing experiment indicated that the surface roughness of the two plastic mould steels reached uniformity under the conditions that TriDent polishing fabrics and W0.5 polishing compound were adopted.

Abstract: A gelatin stone having a new polishing mechanism that can polish a free-form surface is proposed in this study. The gelatin based stone can easily control the hardness and the melting point by changing the density, the cooling condition and the kinds of additives. The main conclusions obtained in this study are as follows. The proposed gelatin stone can polish the surface of various materials. The high density of gelatin is suited for a gelatin stone. Surface roughness improves as the polishing time gets longer. Polishing by gelatin stone needs a high-speed relative motion.