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Tungsten Electrode Material
Oct 20, 2017

Tungsten carbide has high abrasion resistance and refractibility, Tungsten its hardness is close to the diamond, which is often used in some cemented carbide. At present, Tungsten tungsten carbide based carbide is the largest consumption area of tungsten, this carbide is the tungsten carbide micron powder and metal adhesives (such as cobalt, nickel, molybdenum) in a vacuum furnace or hydrogen reduction furnace sintering Of the powder metallurgy products. Tungsten carbide - titanium carbide - tantalum carbide (niobium) - cobalt and steel bonded carbide and other four categories, the carbonation of tungsten carbide - titanium carbide - titanium carbide - titanium carbide - titanium carbide - titanium carbide - Tungsten based carbide is mainly used in the manufacture of cutting tools, Tungsten mining tools and drawing die.

The melting point of tungsten is the highest among all metals and is also very high in hardness, and is often used to produce heat-resistant and wear-resistant alloys such as tungsten and chromium, cobalt, and carbon alloys commonly used to produce valves such as aircraft engines, Tungsten turbine impellers, etc. High-strength wear-resistant parts, and tungsten and other refractory metals (such as tantalum, niobium, molybdenum, rhenium) alloy often produce such as aviation rocket nozzles, engines and other high-heat strength parts.

Tungsten has strong plasticity, Tungsten low evaporation rate, high melting point, strong electron emission capability, and tungsten and its alloys are widely used in the electronics and power industry. For example, tungsten filament has high luminous efficiency and long service life, and is widely used in the manufacture of various bulb filament, such as incandescent lamp, iodine tungsten lamp and so on. Tungsten wire can also be used to make the direct thermal cathode and gate of electronic oscillation tube As well as a variety of electronic equipment in the side of the hot cathode heater. The characteristics of tungsten make it also suitable for TIG welding and other electrode materials similar to this work.

Tungsten compounds are often used as catalysts and inorganic colors, such as tungsten disulfide used in the preparation of synthetic gasoline as a lubricant and catalyst, bronze tungsten oxide used in painting, calcium or magnesium tungsten commonly used in the phosphor.

The melting point of tungsten is the highest of all metal elements, the density (19.3 g / cm³) is very high, close to gold, tungsten hardness is also high, such as tungsten carbide hardness is close to the diamond. In addition, tungsten also has good electrical conductivity and thermal conductivity, a small coefficient of expansion and other characteristics, which is widely used in alloys, electronics, chemical and other fields, of which tungsten carbide is the largest consumer areas of tungsten.

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