tungsten tube and tungsten security seal labels

Chemical formula WC. Called the Wolfram Carbide for black six-party crystals, with metallic luster, hardness is similar to diamond, for electricity and heat

A good conductor. Melting point 2870 ℃, boiling point 6000 ℃, relative density 15.63 (18 ℃). Tungsten carbide insoluble in water, hydrochloric acid and sulphuric acid, soluble in nitric acid, hydrofluoric acid in mixed acid. Pure tungsten carbide is fragile, if adding a small amount of titanium, cobalt and other metallic,tungsten balls can reduce the brittleness. Used for steel products of tungsten carbide cutting tools, often join titanium carbide, tantalum carbide, or their mixture, in order to improve the antiknock ability. Tungsten carbide chemical stability. In tungsten carbide, tungsten carbon atoms embedded metal lattice clearance, does not destroy original metal lattice, the formation of interstitial solid solution, so also called interstitial compounds (or insert). Tungsten carbide can be made of a mixture of tungsten and carbon was heated to high temperature, hydrogen or the presence of hydrocarbons can accelerate the reaction. Tungsten steel tubes mainly used in the thermocouple protection tube inside the high temperature furnace, sapphire single crystal furnace, high temperature sintering furnace supporting elements, etc.tungsten tube

 If use oxygen containing compounds in the preparation of tungsten, vacuum products must eventually in 1500 ℃, and to remove carbon oxides. Tungsten carbide is suitable for machining under the high temperature, cutting tool, the structure of the kiln, the material can be made up, jet engines, gas turbine, nozzle, etc. Another of tungsten and carbon compounds as the two tungsten carbide, chemical formula for the  tungsten wires , melting point is 2860 ℃, boiling point 6000 ℃, the relative density of 17.15. Its properties, preparation, use with tungsten carbide tungsten steel, carbide, also known as the hardness is second only to diamond, its stable chemical properties, even in the case of heating, also with hydrochloric acid, sulfuric acid, even not be dissolved in aqua regia. Tungsten electrode resistance to high temperature, metal, known as the most difficult soluble nature, melting point 3410 ℃; Hardness is second to none in the metal, only heated to very high temperature, the pressure processing can proceed. Our company production of tungsten steel balls are widely used in the water meter, flow meter, pen, etc.