SOME FEATURES OF FORMING HOT PRESSING BLANKS BASED TUNGSTEN CARBIDE FOR THERMAL CENTRIFUGAL SPRAYING

The analysis of the shortcomings of tungsten carbide electrodes manufacturing by remelting furnaces resistivity followed by termotsentrobezhnym spray. The formation of the double tungsten carbide (WC+W2C) in hot pressing a mixture of crushed relite and relite and tungsten and carbon is studied. It is shown that at a temperature of ~ 1900ºC pressing emerging billet electrode with the necessary structural characteristics, tungsten is fully transferred in carbide and semicarbide with the same space group of the crystal lattices as in relite.