Near-isothermal forging formation method for TC4 titanium alloy hollow shaft neck forged piece
A hollow journal and isothermal forging technology, which is applied in the field of warm forging and forming, can solve the problems of small deformation of the rod, uneven deformation, and affecting the quality of forgings, and achieve the effect of preventing temperature rise and increasing deformation
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[0015] To implement the near isothermal forging forming method of the TC4 titanium alloy hollow journal forgings of the present invention, it is necessary to provide forging heating furnaces, presses, manipulators and other equipment. The specific implementation:
[0016] The main chemical element content (weight percentage) of the TC4 alloy is: Al content 5.5%~6.8%, V content 3.5%~4.5%, Fe content 0.30%, C content 0.10%, N content 0.05%, The H content is 0.015%, O content is 0.20%, and the balance is Ti.
[0017] The steps of this method are as follows:
[0018] Heat the TC4 titanium alloy bar material according to the specifications in the forging heating furnace, first heat the bar material to 40℃ below the phase transition point for heat preservation, and calculate the heat preservation time according to 0.3min / mm~0.5min / mm; then heat up to phase Heat preservation at 30℃ above the change point, and the heat preservation time is calculated as 0.4min / mm~0.6min / mm; after heat pres...
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