Tungsten is a non-ferrous metal and an important strategic metal, and tungsten ore was called "heavy stone" in ancient times. In 1781, scheelite was discovered by the Swedish chemist Carl Wilhelm Scherer, and a new elemental acid - tungsten acid was extracted, and in 1783, wolframite was discovered by the Spaniard Depurja, and tungsten acid was also extracted from it, and in the same year, tungsten powder was obtained for the first time by reducing tungsten trioxide with carbon, and the element was named. The amount of tungsten in the earth's crust is 0.001%. There are 20 tungsten-containing minerals that have been discovered. Tungsten deposits are generally formed with the activity of granitic magma. After smelting, tungsten is a silvery-white lustrous metal with an extremely high melting point and great hardness. Tungsten is the metal with the highest melting point.
In the 50s of the 18th century, chemists discovered the effect of tungsten on the properties of steel. However, tungsten steel began to be produced and widely used in the late 19th and early 20th centuries.
In 1900, at the Universal Exhibition in Paris, high-speed steel was exhibited for the first time. As a result, the tungsten extraction industry has developed rapidly. The advent of this steel marked a major technological advance in the field of metal cutting processing. Tungsten became the most important alloying element.
In 1900, the Russian inventor A.N. Ладыгин first proposed the use of tungsten in lighting bulbs. In 1909, after Кулидж formulated a process method based on powder metallurgy and pressure processing, tungsten could be widely used in electric vacuum technology.
From 1927 to 1928, tungsten carbide was used as the main component to develop cemented carbide, which was an important stage in the industrial development history of tungsten. These alloys surpass the best tool steels in all respects and are widely used in modern technology.