tungsten alloy counterweight for aircraft manufacture technique

tungsten alloycounterweight for aircraft is usually made of WNiFe, WNiCu or WNiFeCu, and added with Co, Cr, Mo, etc. to improve its properties for some other special application by the powder metallurgy technology. nickel-iron or nickel-copper is here added as a binder. Manufactured by powder metallurgy, tungsten alloy sintered material has a high density, high tensile strength of generally up to 900 ~ 1000Mpa, excellent elongation of 20% ~ 30%.

After strengthening through plastic deformation, its strength can be more greatly improved but the ductility will be decreased. The strength of tungsten alloy could be more than 1400Mpa and the elongation could be maintained at about 10% after plastic deformation. Besides, in the mid-1990s, people also use tungsten alloy material manufactured through powder injection molding technology and successfully adopted for civil and counterweight fields. The emergence of powder metallurgy accelerated the development and research of tungsten minerals. It is said that tungsten alloy powder metallurgy technology not only promote the rapid development of tungsten exploitation, but also changed the traditional single metal production status.