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the wear resistance, fatigue strength, contact stiffness, vibration and noise are closely related to the life of the mechanical products and reliability have a significant impact. general marked with ra. [ more ] [ close ] reply answer : answer - - : : polishing is the process of creating a smooth...
answers reward question has expired tungsten powder producing method submit other answers - - : : tungsten powder preparation method of hydrogen and carbon reduction, these two methods are the early tungsten powder preparation method. its principle is to reduce raw material of tungsten trioxide (wo )...
, nanosized zirconia particles embedded in the matrix and micrometer-sized columnar grain structures of zirconia similar to those of conventional zirconia coating. compared with the conventional zirconia coating, the nanostructured coating is denser and has finer and less porous structure and fewer microcracks...
-well, because, if they were made out of mild steel they'd deform / nick too easily and, if they were made out of cast iron, they'd break if we used too much force or eventually after repeated use. so they're made out of an alloy which combines the properties we want. i actually don't know enough about...