Molybdenum crucibles and tungsten crucibles are widely used in rare earth smelting, vacuum sintering, laser crystal growth and other industries. Due to the high price of tungsten and molybdenum and the harsh processing conditions, the repeated use of crucibles has become a concern for manufacturers.
Most tungsten concentrates are processed chemically to ammonium paratungstate (APT). Secondary raw materials like (oxidized) scrap and residues are another important feed for chemical tungsten processing.
Tungsten alloy collimator provides the perfect solution for radiation shielding and collimation in nuclear medicine. Because tungsten alloy has excellent radiation attenuation properties, such a collimator has a reduced volume than traditional lead collimator,
Cemented carbides or hard metals as they are often dubbed are a class of materials made by ‘cementing’ grains of tungsten carbide in a binder matrix of the metal cobalt by a process called liquid phase sintering.
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.
Plate molybdenum electrodes are another form of side-wall type electrodes, mainly used in low-capacity single-phase electric melting furnace, but also suitable for required low current density and uniform energy release certain glass electric furnaces.
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.
Tungsten carbide (WC) has excellent properties of high hardness, high strength, high rigidity, good wear resistance, and thermal conductivity. It has wide application files of tools in the metalworking, drilling, and mining industries under severe conditions of high-pressure
