Exposure to respirable crystalline silica is a hazard common to many industries in Alberta but particularly so in abrasive blasting. Alberta occupational health and safety legislation requires the consideration of silica substitutes when conducting abrasive blasting, where reasonably practicable. In this study, exposure to crystalline silica during abrasive blasting was evaluated when both sili...

The paper presents the results of tests wear hardened wear-resistant steels in presence quartz, coal and coal-mineral abrasives a differentiated ratios each component case without abrasives. were carried out on ring-on-ring test stand. Volume loss was parameter used to characterize level. Based Scanning Electron Microscopy (SEM) observations, different mechanisms surface destruction depending t...

In this study, special ceramic grinding plates impregnated with diamond grit and other abrasives, as well self-made lapping plates, were used to prepare the surface of single-crystal silicon carbide (SiC) wafers. This novel approach enhanced process reduced final chemical mechanical planarization (CMP) polishing time. Two different pads mixed abrasives prepared: one self-modified + SiC a binder...

The microtopography of a honing wheel surface composed active abrasive grains is the key factor affecting characteristics, and control it sufficient condition to realize high-efficiency precision honing. Based on magnetron sputtering method phase field method, theoretical model cubic boron nitride (CBN) coating formation established. physical vapor deposition (PVD) discrete equation solved by f...