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.
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.
Tungsten lamp filaments, which operate at temperatures in the range of 2400° C, are successfully mounted on molybdenum wire; the wire acting both as a heat sink and a support while lowering the temperature at the support junction.
Today we take a look at the preforming and forming process of train wheel forging. Among them, the forming process of train wheel forgings is the key process for matching the rolling capacity of thermoforming units.
Molybdenum alloy is a non-ferrous alloy composed of molybdenum as a matrix and adding other elements. Its alloys are mainly divided into TZM and TZC molybdenum alloys, MHC and ZHM alloys, Mo-W alloys, Mo-Re alloys, MH and KW molybdenum alloys.
Molybdenum is a metallic, silvery-white element which is very stable chemically but it will react with acids. The physical characteristic that makes molybdenum unique is that it has a very high melting point, 4,730 degrees Fahrenheit. This is 2,000 degrees higher than the melting point of steel.
With the development of modern electronic technology, the requirements for film-forming quality of semiconductor devices are getting higher and higher, thus promoting the progress of vacuum deposition technology, of which RF sputtering is a better film-forming method.
