China's acquisition of mineral resources to strengthen the development of cemented carbide

Aeroengine is aviation one of the hardest to breakthrough the forefront of technology. Domestic researchers for decades has not been fully grasp the production of modern aircraft engine research and development, one of the important reason is that material processing, such as high temperature alloy and cemented carbide production level and quality is relatively backward. Aviation engine is the core index in esteem than, and increase in esteem than the turbine blades is the key to improve the material of high temperature resistant ability, every raise a temperature of 100 degrees Celsius, in esteem than can be increased by 10%. Usually a military turbine engine is one of the most of the money is in the material research and development. Main body structure of the aircraft engine used a large amount of high temperature alloy and hard alloy, and their manufacturing cannot leave the participation of rare earth metals. China's rare earth reserves, the highest in the world, but relatively few, rare metal reserves in manufacturing high-end aeroengine indispensable Ni and Co base alloy also had been for a long time. But this had been the situation is expected to be broken, according to Reuters, a domestic molybdenum for $2.65 billion from the international mining giant, bought the Congo's largest copper and cobalt (gold) 56% stake in the mining area contains more than 28 million tons of copper and 3 million tons of cobalt, an annual output of 204000 tons of capacity of 204000 tons of copper and cobalt.

 

In a broad sense,cemented carbide is made up of refractory metal hard compounds and metal binding phase through Powder Metallurgy technology (Powder Metallurgy, PM) preparation and become a kind of superhard materials. And from the narrow sense, cobalt tungsten carbide usually refers to the WC - Co alloy, its high hardness, high melting point, high strength and good wear resistance, corrosion resistance, even under the 1000 ℃ still has high hardness, can be widely used in cutting tool materials, such as turning, milling, planing tool, drilling, boring cutter, etc., used for cutting cast iron, non-ferrous metal, plastic, chemical fiber, graphite, glass, stone and ordinary steel, can also be used for cutting heat resistant steel, stainless steel, high manganese steel, tool steel and other hard processing material. Co, for example, it is the production of high temperature alloy, cemented carbide some wear-resisting corrosion resistant materials such as key raw material, its in the field of military industry, aviation industry, such as penetrator, armoured vehicles, aerospace engine has a broad application prospect. By cobalt metal cobalt base alloy and other metal carbide grain combine, in more than 1000 degrees high temperature will not lose the original hardness, therefore is essential to make aviation turbine engines of high quality material, typically account for 30% of the whole engine structure, using the oxidation resistance of cobalt base alloy parts is extremely strong, without any protective coating can be used for a long time.