Reclamation of Tungsten Cemented Carbide
It is known that tungsten cemented carbide is composed by super-hard particles (WC, TiC, VC, etc) and binder metals (Co, Ni, Fe, etc). In the Zn-distillation process, melt Zn dissolves the binder metals so that the hard particles could fall apart easily. After Zn is evaporated at elevated temperatures, binder metals precipitates on the surface of hard particles. The distillated alloy is milled into fine powders finally.
One of the advantages of Zn-distillation process is that the reclaimed tungsten cemented carbide powders have the same chemical composition as raw materials. Besides, it is an economical and environment-friendly process which does not generate any wastes and pollution.
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Tungsten cemented carbide has very high strength for a material so hard and rigid. Its compressive strength is higher than virtually all melted and cast or forged metals and alloys.
Tungsten carbide is a class of materials widely used in drawing dies because of their superior strength, toughness and wear resistance.
When tungsten and carbon united they become one of the hardest of all carbides.
Flange generally refers to the four sides of a flat sheet of material are folded together into a box shape, but the four sides are folded up separately.