90% WNiFe, high density tungsten alloy counterweight racket

High density tungsten alloy counterweight racket using the ratio of 90% WNiFe compounding processing , has outstanding advantages in performance. The counterweight is sintered tungsten , nickel, iron powder by mixing repression. Wherein the maximum content of tungsten , 80% to 90% and nickel, iron acts as bonding agent. After the two-phase alloy liquid phase sintering density and the theoretical density similar. Nickel is an essential phase in the sintering process elements , typically at levels from 0.5 % to 12% , if more than 12% , the alloy heat resistance and corrosion resistance are reduced. Iron content is generally between 0.5% and 8% , if more than 8% of the brittleness of the alloy increases . Iron in the alloy to improve the strength and ductility of these alloys have certain magnetic properties. Because the alloy by sintering process allows intermetallic reach full density, so that the density can reach 18.6g/cm ^ 3 is an important counterweight product material . And tungsten - nickel - copper alloy strength and ductility compared to the alloy are better .

Tungsten - nickel - iron alloy has excellent physical and mechanical properties , including high density, high strength , low coefficient of expansion , corrosion resistance , high temperature oxidation resistance and good machinability , etc., and rapid development and wide application , but the alloy a certain magnetic strength and superior ductility are tungsten - nickel - copper alloy. The alloy with a high proportion of tungsten alloy counterweight racket hand high density tungsten heavy alloy , can reach a certain weight requirements . The other hand, high density tungsten alloy corrosion, oxidation , tennis counterweight regular contact with the air , the air humidity of the season easily oxidized metal , this characteristic high density tungsten alloy counterweight can guarantee lasting tennis racket gloss , greatly extending the life of dumbbells .


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