Carbide Roll Ring It was born in 1909 after the birth of powder metallurgy technology, with the development of the metal processing industry. Since the introduction of the carbide drawing dies in Germany in 1918, they have stimulated the study of cemented carbides in various countries. Rolls of various uses have also appeared one after another, but the application of cemented carbide rolls has been extensive since 1960. In 1964, the birth of the first high-speed twistless wire rod mill at Morgan increased the finishing speed of wire rods by a factor of four. Because the finishing rolling mill works at high speed and high stress, the resistance of cast iron rolls and tool steel rolls Poor grinding, short groove life, frequent loading and unloading of the rolls, affecting the efficiency of the rolling mill, and not meeting the requirements of finish rolling production, were replaced by the combined cemented carbide roll. There are more than 200 sets of Morgan-type rolling mills in the world, which consume hundreds of tons of cemented carbide rolls.