Super coarse spherical tungsten powder has good fluidity, near-spherical shape, complete and uniform grain development, and can be used for tungsten products and tungsten alloys, as well as alloy additives and chemical reagents.
characteristic
The advantages of good fluidity, near-spherical and grain growth are complete and uniform. The average particle size can reach 67um, and the maximum particle size can reach 150um, the maximum loose packing density is 13.41g•cm-3, and the time of optimum fluidity is 9s per 50g.
Application
Super coarse spherical tungsten powder can be used for the production of tungsten products, contact alloys, high-gravity alloys, hard alloys, alloy additives, chemical reagents, etc.
Preparation
At present, the production process of super coarse spherical tungsten powder is that the powder of secondary ammonium tungstate was calcined to yellow tungsten or blue tungsten, then the reduction in hydrogen.
This method of preparation of super coarse spherical tungsten powder is very regular crystal shape, powder particle size control mostly in 2 ~ 5 um.
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