The history of tungsten dates back to the 17th century. At that time, miners in the Erzgebirge Mountains of Saxony, Germany, noticed that some of the ore would interfere with the reduction of cassiterite and produce slag. The miners gave the mines some German nicknames: "wolfert" and "wolfrahm". Scheler In 1758, the Swedish chemist and mineralogist Kronested discovered a mineral, which he called "tungsten", which means "heavy stone" in Swedish. He is convinced that this mineral contains an element that has not yet been discovered.
In 1781, the Swedish chemist Carl Wilhelm Schel discovered the scheelite and extracted tungstic acid from it. He believes that a new metal may be obtained by reducing tungstic acid. Husse de Luyal and the Faustul de Luyal brothers In 1783, Husse de Luyal and the Faustul de Luyal brothers also extracted tungstic acid from the wolframite. In the same year, they obtained tungsten powder for the first time with carbon reduction of tungsten trioxide.
Later, Jöns Jacob Berzelius and Friedrich Wöhler gave the metal a new name: wolfram, but this method is more recognized in Germany and Scandinavia, while the United Kingdom, the United States and other countries prefer to use Kronestay. Give this metal the name "tungsten".
Development of tungsten industry
In 1841, chemist Robert Oxland obtained the UK patent for the production of sodium tungstate, tungstic acid and tungsten metal, a major advance in the history of tungsten modern chemistry, opening the way for the industrial production of tungsten.
In the 1850s, chemists noticed that the addition of tungsten to steel had an effect on the properties of steel, but it was not until the end of the 19th and early 20th centuries that tungsten steel began mass production and widespread use. High-speed steel with a tungsten content of 20% was first exhibited at the Paris World Expo in 1900. The appearance of this steel marks a major technological advancement in the field of metal cutting.
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Shirley N.//SMC Editor