Cemented carbide is the most widely used type of high-speed machining (HSM) tool material. This type of material is produced by powder metallurgy, and consists of hard carbide (usually tungsten carbide WC) particles and a softer metal bond composition.
It is reported that China Aerospace Science and Technology Corporation (CASTC) will begin to develop a high-tech aircraft, which is more efficient than the retired space shuttle. It uses a variety of power and can take off from ordinary airports and fly straight into orbit.
Tungsten is a rare metal with a shape similar to steel. Because of its high melting point, high hardness, excellent corrosion resistance, and good electrical and thermal conductivity, it has become one of the most important functional materials in modern industry, national defense etc.
China tungsten price was in the upward trend in the week ended on Friday July 31, 2020, but affected by the weakness both in the supply and demand sides, transactions were poor at the end of this month.
The international research team conducted characteristic research and analysis of the "cobalt/molybdenum disulfide heterostructure" and found that this new material combination is expected to lead semiconductors to break through the physical limits and become a potential new star.
The strengthening mechanism of TZM alloy is divided into: solid solution strengthening, second phase strengthening and deformation strengthening.
Titanium alloy has some special requirements on isothermal forging, for example, there are some special requirements on mold temperature, pressure and dwell time. During isothermal forging the mold temperature should be at 850~950 ℃ and pressure should be control at 100~120 MPa.
The development difficulties of China Molybdenum Industry are focused on lacking of systematic and whole research and development, patent and technicians problem, and market information spreading speed, etc.
