Development history of tungsten metallurgy

Tungsten was discovered in 1781 by the Swedish chemist CW Scheele. To the beginning of the last century, due to a number of application development tungsten, such as in 1900 for the first time demonstrate the use of high-speed steel and tungsten bulbs with tungsten as an alloying element in the Paris World's Fair, 1927 to 1928 developed into a tungsten carbide-based sintered Tungsten metallurgy, such as cemented carbide, has begun to develop, and the production of tungsten concentrate has increased rapidly.
Historically, the increase in tungsten production has been linked to the need for war. The growth of the world's tungsten concentrate production in different historical periods is shown in the table below. From the table, it can be seen in World War I (1915~1918), II. The production of tungsten during the Second World War (1939-1945) and during the Korean War was higher than normal. After the 1960s, the production and consumption of tungsten concentrates in the peacetime period still increased, but after the 1980s, the application of coated cemented carbides extended the life of the tools and the utilization of recycled tungsten. The increase (about 35% in the United States in 2000) and the development of tungsten substitutes have led to a decline in the production and consumption of tungsten concentrates. The development of tungsten metallurgy technology in different periods is generally as follows:

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