It is known that Siberian pine grows in Siberia and its wood used pencil making, construction sites, house construction, musical instruments, furniture various handicrafts with light, soft, well-workable feature, smoothness beautiful texture. In this study, the parameters (Ra, Rz Rq) of surface roughness shore D hardness values were investigated after applying different abrasives (80, 100, 120,...

Ordinary diamond presents the disadvantages of poor self-sharpening and concentrated grinding stress when it is used as an abrasive. Moreover, this kind cannot be well wetted by vitrified bond, resulting in a lower holding force binder to abrasives (i.e., easy detach from matrix during grinding). These comprehensive factors not only reduce surface quality processed workpiece, but also hinder pr...

Winter roadway operations, commonly known as snow and ice control are one of the most critical functions state, provincial, local transportation agencies in cold regions. These operations aim to provide safety mobility through timely effective application materials mechanical removal. The common used salt (sodium chloride, solid or liquid brine), magnesium chloride-based, calcium chloride-based...

Four calcined alumina abrasive particles [ultrafine (0.05 ?m), 3 ?m, 9 ?m and 20 ?m] with defined sizes were investigated for their effects on toothbrush abrasion, surface polishing stain removal in vitro . The existence of a critical particle size (CPS) was shown the first time tooth model system present study CPS ~2.3 d10, 4.3 d50 or 7.8 d90 abrasives apparent. values indicate that 10%, 50% 9...