2015年10月12日星期一

Do You realize why We Use Chromium Oxide as Abrasive Material?



Chrome oxide is dichromium trioxide, typically known as Green Chrome Oxide. It’s tiny hexagonal crystal having a color from light green to dark green. It can be added into Ceramic Pigment or Chrome Green Ceramic Pigment. It turns brown when receiving heated up, after cooled down it still turns to green. The crystal is extremely tough and most stable, even in the glowing state the hydrogen is passed by way of, it still has no modify. It’s soluble in heated Potassium bromate remedy, slightly soluble in acids and alkalis, practically insoluble in water, ethanol and acetone. Its relative density is five.22, melting point about 2435 and boiling point 4000. It truly is irritating. It’s mostly employed for smelting metal chromium and chromium carbide, so we are able to frequently see the fused chrome oxide. It could also be utilized for the colorants of enamel, ceramics, artificial leather, building supplies, or catalysts for organic chemical synthesis, sun proof paint, abrasive supplies, green polishing paste and special ink for printing paper funds. In addition to, it may be used within the production of refractory for example high chrome brick, chrome corundum brick. Then you could wonder why we use Chromium Oxide as abrasive material?
The reason is because the lapping tool and perform piece are soft, so in the polishing method the abrasive material is suspended between the function piece and lapping tool, mostly make use of the chemical action of plane polishing machine as well as the operate piece surface to make a layer of very soft oxide film, and the membrane at convex point can simply be rub out by abrasive material, within this method we are able to get quite fine surface roughness, processing many different steel, hardened steel, cast iron, copper and aluminum and their alloys, tough alloy, ceramic, glass and some plastic items and so on. the surface polishing of a perform piece is usually carried out following getting polished; for manual surface polishing, the polishing agent have to be coated on a polished plate, you ought to hold the perform piece for a straight line reciprocating movement or "figure 8” motion, having polished for a specific time frame, the work piece should be turned from 90 degrees to 180 degree to stop the inclination of a work piece.
The perform piece of a surface polishing machine contacts having a grinding gear randomly, the higher spot can be trimmed one another, the error is decreased gradually, as well as the precision can also be improved, so it can be utilized to detect the work piece, making targeted changes for the polishing position and grasping the grinding time, making certain the precision from the dimension and shape, acquiring reputable processing good quality; for the surfaces around the operate piece that are to become grinded partly for example facet, square hole and narrow slit, and so on., we are able to also hand-hold the grinding gear to polish them, the surface on a sizable batch of simple components also can be polished around the surface polishing machine, so it might widely utilized for processing various higher precision surface in the single and little batch production, and may be utilized for mass production, may be carried out the cutting length amongst 0.01|¨¬m and 0.1|¨¬m of a perform piece, getting really high accuracy plus a really low Ra worth, but we typically cannot raise the position accuracy between the processing surface and also the other surface.

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