What is Tungsten and what is the use of?
Tungsten is a transition metal as well as a hard and heavy metal with the abbreviation W, which has a light gray color and is used in the electrical industry, light bulbs, electrodes, etc.
History
This metal is derived from the Swedish word tung sten which means heavy stone, which was first mentioned in 1779 by Peter Woulfe. Tungsten is found in wolframite ore (iron-manganese tungsten FeWO4/MnWO4), scheelite (calcium tungsten CaWO4), ferberite and huebnerite. Important deposits of these materials are located in Bolivia, California, China, Colorado, Portugal, Russia and South Korea (China produces approximately 75% of the tungsten needed in the world). This metal is produced by reducing tungsten oxide by hydrogen or carbon. It is produced commercially.
finding
Tungsten is found in wolframite ore (iron-manganese tungsten FeWO4/MnWO4), scheelite (calcium tungsten CaWO4), ferberite and huebnerite. Important reserves of these materials are located in Bolivia, California, China, Colorado, Portugal, Russia and South Korea (China produces approximately 75% of the tungsten needed in the world). This metal is commercially produced by reducing tungsten oxide by hydrogen or carbon.
hard materials
Tungsten is mainly used in the production of hard materials based on tungsten carbide, one of the hardest carbides, with a melting point of 3770 degrees Celsius. WC is a good electrical conductor, but the electrical conductivity of W2C is lower.
About 60% of tungsten consumption in the form of WC is currently used for polishing materials resistant to wear, cutting, knives and drills, saws, milling and rotary tools used in metalworking, carpentry, mining, oil and construction industries.
alloys
Tungsten's strength and density have been used in making heavy metal alloys. A good example is steel, which contains about 18% tungsten. Due to the high melting point of tungsten, it is a good material for use in rocket nozzles, for example, in Polaris 27-UGM, a ballistic missile submarine.
Superalloys that contain tungsten, such as Hastelloy and Stellite, are used in turbine blades, wear-resistant parts, and metal coatings.
tungsten rod
Organic tungsten rods (WMoNiFe) and Anviloy 1150 are made of metal powder at a certain temperature, they are produced using high temperature powder metallurgy technology. Tungsten alloy strip has low coefficient of thermal expansion, good thermal conductivity and good material properties. At high temperature, tungsten alloy rod is a material with high melting point and low coefficient of thermal expansion. Adding tungsten alloy components improves machinability, hardness and solderability. Material properties are based on the production of tungsten alloy bars to eliminate heat treatment problems associated with other tool materials.
applications:
Tungsten is a metal whose range of applications is very wide; The most important of them is tungsten carbide (W2C, WC) in cemented carbides. Cemented carbides (their other name is hard metals) are resistant coating materials that are used in metalworking, mining, oil and construction industries. Because tungsten can be made into very thin wires with a high melting point, it is used in filaments in lamps, vacuum lamps and electrodes.
Other Applications
The high melting point of tungsten has made it used in space applications and things like welding, roasting and electrical applications where the temperature is high.
The strength and density characteristics of tungsten have made it suitable for making heavy metal alloys used in heat sinks and high density applications such as weights.
Steel used in high-speed devices (Hastelloy, Stellite) are often alloyed with tungsten, which contains 18% tungsten.
Refractory alloys that contain this metal are used in the cover and parts of the turbine blade, steel tools and resistant coating alloy.
Alloys are used as substitutes for lead in bullets.
Tungsten chemical compounds are used in catalysts, inorganic pigments, and tungsten disulfide high-temperature lubricants that are resistant up to 500 degrees Celsius. Because the thermal expansion of this element is similar to borosilicate glass, it is used in making glass-to-metal seals. Its oxides are used in ceramic glazing.
Magnesium/calcium tungstate acid is widely used in fluorescent lamps.
This metal is also used in X-ray targets, fusible elements for electric furnaces.
Salts containing tungsten are used in chemical and tanning industries.
Tungsten bronzes (the reason for their name is the color of tungsten oxide) are used in paints along with other compounds.
