Disques de papier abrasifs
The use of Premium SiC abrasive paper is the most efficient and particle technique for grinding metallic metallographic specimens. Although many qualities of silicon carbide are readily available, only the premium grade SiC powder provides the most consistent results and highest grinding rates.
Premium silicon carbide powders are processed at higher temperatures than the lower quality silicon carbide powders.
Thus the premium silicon carbide powders obtain a more complete reaction between the silica ad carbon components. The resulting crystal structure is a hexagonal- rhombohedral crystal structure with a hardness of approximately 2500HV. This crystal structure makes the premium silicon carbide powder an ideal abrasive for cutting and grinding because of its high hardness and sharp edges. Premium silicon carbide is also somewhat brittle, and therefore cleaves easily to produce sharp new edges (self sharpening).
The resulting Premium SiC abrasive is an excellent abrasive for maximizing cutting rates while minimizing surface and subsurface damage. For metallographic preparation, Premium SiC abrasives are applied or coated onto abrasive grinding papers. To increase the durability as well as to improve the ability to remove used papers, a thin mylar film backing is bonded to the Premium SiC paper.
Premium SiC abrasive paper is available in all common grit sizes ranging from 60 grit to 1200 grit.
|Surface Roughness on Steel Rc 30(RA - nm)|