(1) Process flow
According to the characteristics of titanium alloy material parts: open die forging blank → closed extrusion method → pre-forging → final forging process extrusion process to avoid closed forged oxide layer is too thick, stress is too large, and the organization is uneven, Defects such as excessive burrs.
(2) Vacuum heat treatment
During the extrusion process, multiple vacuum heat treatments are used to improve the microstructure and properties of the titanium alloy, to prevent titanium from being immersed in the titanium alloy by O, N, H, C and other elements in the air to form a gap solid solution, which seriously distorts the surface lattice. Plasticity decreases, interacts with N and C to form hard layers such as TiN and TiC with high hardness, which are easy to crack during extrusion.
(3) Control the rate of extrusion deformation
By controlling the deformation temperature, deformation speed, and deformation amount of the spinning parts, supplementary heating during the extrusion process, and thermal insulation are performed to control the difficulties such as poor plasticity and work hardening extrusion of the titanium alloy material parts.
(4) Selection of extrusion equipment
① The extruder should have sufficient rigidity.
② The press must have a large working stroke and energy.
③ The slider should have good guidance accuracy.
④ Have a super-safety device.
hollow titanium rod grade 5 titanium sheet 6al4v titanium sheet titanium pipe fitting
According to the characteristics of titanium alloy material parts: open die forging blank → closed extrusion method → pre-forging → final forging process extrusion process to avoid closed forged oxide layer is too thick, stress is too large, and the organization is uneven, Defects such as excessive burrs.
(2) Vacuum heat treatment
During the extrusion process, multiple vacuum heat treatments are used to improve the microstructure and properties of the titanium alloy, to prevent titanium from being immersed in the titanium alloy by O, N, H, C and other elements in the air to form a gap solid solution, which seriously distorts the surface lattice. Plasticity decreases, interacts with N and C to form hard layers such as TiN and TiC with high hardness, which are easy to crack during extrusion.
(3) Control the rate of extrusion deformation
By controlling the deformation temperature, deformation speed, and deformation amount of the spinning parts, supplementary heating during the extrusion process, and thermal insulation are performed to control the difficulties such as poor plasticity and work hardening extrusion of the titanium alloy material parts.
(4) Selection of extrusion equipment
① The extruder should have sufficient rigidity.
② The press must have a large working stroke and energy.
③ The slider should have good guidance accuracy.
④ Have a super-safety device.
hollow titanium rod grade 5 titanium sheet 6al4v titanium sheet titanium pipe fitting
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