Tungsten carbide and titanium carbide hard alloys


Titanium carbide is currently used in the manufacture of hard metal-ceramic alloys in the form of arc lamp electrodes in the tool industry. Also this material is used as: protective screen of electric resistance furnaces, boats and crucibles, protection covers of metal-ceramic thermocouples, abrasive coating for processing, cast iron, steel, non-ferrous alloys, for processing semiconductors, glass, aluminum, dielectric, natural stone, filler of diamond tools.

Titanium carbide is used as a material in tank electrodes, with the use of a mercury cathode in electrolysis. It catalyzes the decomposition of sodium amalgam. Titanium carbide is widely used as an additive or substitute for graphite. Electrodes based on titanium carbide are used during aqueous solution electrolysis, during electro-oxygen cutting under water of steel and during vacuum evaporation. Application of such electrodes during oxygen cutting under water allows to reduce the specific consumption of the electrode by 6-10 times.

Features of titanium carbide electrodes

When cutting steels with this electrode, easy arc excitation, stable combustion and the formed cut is of high quality. When carbide-titanium is introduced into the composition of graphite electrodes, their efficiency increases during the electrolysis of aqueous solutions. If the content of titanium carbide in C-TiC electrode is increased up to 30%, there will be a noticeable reduction of overvoltage and release of both oxygen and hydrogen. The current density will be 10.2 to 10.4 A/cm2. And if the titanium carbide content is increased above 30%, there will be no further reduction in overvoltage.

When aluminum coatings are applied to plastics, it is difficult to use titanium carbide as a heating element because of the cutting of the refractory compound tubular electrodes. Titanium carbide crucibles and electrodes are used for vacuum evaporation of fusible metals (silver, tin, titanium carbide, copper), without adding other materials.

Features of titanium carbide for the production of electrodes

Titanium carbide for the manufacture of electrodes has the following characteristics: 79,2 to 80% of total Ti, 0,1 - 0,2% C total, 19,4 - 20,2% C total, 0,1 - 0,6% Fe. The following titanium carbide fractions are produced: F320, F360, F400, F500, F600, F800, F1000, F1200. Titanium alloys are supplied according to GOST 19 807-74.

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