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... tungsten carbide, one of the hardest and most abrasion resistant materials, with hardness between 3000 and 4000 HV in a metallic auto fusible Ni / Cr / B / Si matrix is deposited by an oxy-acetylene flame. ...
...Carbide Brazing Rod High Quality Tungsten Carbide Brazing Rods Production Description: The Composite Alloy Rods are made of tungsten carbide grits and Cu or Ni, using together with a large oxy-acetylene torc...
... processing. It mainly includes coal gasification, liquefaction, dry distillation, tar processing, and calcium carbide acetylene processing. Coal chemical processing. The chemical structure of organic matter...
..., and solid fuels and chemicals through chemical processing. It mainly includes coal gasification, liquefaction, dry distillation, tar processing, and calcium carbide acetylene processing. Coal chemical proc...