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Tungsten ball

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Tungsten ball
Latest company news about Tungsten ball

Tungsten balls are widely used in water meters, flow meters, pen-making and other fields.

Features:

Compared with lead, tungsten alloy balls are non-toxic, non-polluting and safer. The high density of tungsten alloy allows tungsten alloy balls to maintain their shape even in extreme environments. The density of depleted uranium is similar to that of tungsten alloy, but depleted uranium is radioactive and radioactive materials require special permits, making the use of depleted uranium difficult and costly.

Physical properties:

Chemical formula WC. The full name is Wolfram Carbide. It is a black hexagonal crystal with metallic luster and hardness similar to diamond. It is a good conductor of electricity and heat. The melting point is 2870℃, the boiling point is 6000℃, and the relative density is 15.63 (18℃).

Chemical properties:

Tungsten carbide is insoluble in water, hydrochloric acid and sulfuric acid, but easily soluble in a mixed acid of nitric acid and hydrofluoric acid. Pure tungsten carbide is fragile, if a small amount of titanium, cobalt and other metals are added, the brittleness can be reduced. Tungsten carbide used as a steel cutting tool is often added with titanium carbide, tantalum carbide or their mixture to improve the anti-knock ability. The chemical properties of tungsten carbide are stable. In tungsten carbide, carbon atoms are inserted into the gaps of the tungsten metal lattice without destroying the original metal lattice, forming an interstitial solid solution, so it is also called an interstitial (or insertion) compound.

preparation:

Tungsten carbide can be made by heating a mixture of tungsten and carbon at high temperature. The presence of hydrogen or hydrocarbons can accelerate the reaction. If the oxygen-containing compound of tungsten is used for preparation, the product must be vacuum treated at 1500°C to remove the carbon and oxygen compounds.

use:

Tungsten carbide is suitable for mechanical processing at high temperatures, and can be used to make cutting tools, structural materials for kilns, jet engines, gas turbines, nozzles, etc. Another compound of tungsten and carbon is tungsten carbide, the chemical formula is W2C, the melting point is 2860℃, the boiling point is 6000℃, and the relative density is 17.15. Its properties, preparation methods, and uses are the same as tungsten carbide tungsten steel, also known as cemented carbide. Its hardness is second only to diamonds, and its chemical properties are stable. Even when heated, it does not interact with hydrochloric acid and sulfuric acid, even in aqua regia It will not be dissolved. Tungsten is extremely high temperature resistant, and it is known as the most insoluble metal in nature. Its melting point is as high as 3410°C. The hardness is also among the best in metals. Pressure processing can only be carried out when heated to a very high temperature. Tungsten steel balls are widely used in water meters, flow meters, pen-making and other fields!

Pub Time : 2021-04-16 15:36:34 >> News list
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