Method for improving quasi-beta forging deformation uniformity of titanium alloy high-rib forge piece

Abstract

The invention discloses a method for improving the quasi-[beta] forging deformation uniformity of a titanium alloy high-rib forge piece, which comprises the following steps: S1, before quasi-[beta] forging, performing finite element simulation on an improved pre-forge piece model through software, optimizing the structural size parameters of the improved pre-forge piece model, performing quasi-beta forging simulation calculation, and enabling the deformation amount of a final forging piece model obtained after the improved pre-forging piece model to be subjected to quasi-[beta] forging is within the effective deformation amount range of 20%-40%; S2, performing machining according to the pre-forged piece model data meeting the effective deformation in the step S1, and obtaining an improved pre-forged die; and S3, putting the titanium alloy blank into the improved pre-forging die to be subjected to pre-forging forming, obtaining an improved pre-forged piece, then putting the improved pre-forged piece into a final forging die to be subjected to quasi-[beta] forging, and obtaining a final forged piece. The method can effectively improve the deformation of the high-rib area of the forge piece, so that the deformation of the high-rib part is uniform and consistent with that of the web.

Description

technical field [0001] The invention relates to the technical field of titanium alloy processing, in particular to a method for improving the uniformity of quasi-beta forging deformation of titanium alloy high-strength forgings. Background technique [0002] During the quasi-β forging forming process of TC18 titanium alloy high-reinforced forgings, for high-reinforced forgings with a rib width ratio ≥ 3, the pre-forged ribs adopt a conventionally designed planar structure. Since the ribs of the pre-forging and the ribs of the final forging are similar in shape and are both flat, the flow space of the metal in the cavity at the high rib is small. At the same time, the temperature drop in the high rib area is faster, and the metal deformation is more difficult. These two points are likely to cause The deformation dead zone with little deformation occurs at the top of the rib, and the grain structure in the deformation dead zone is coarse, and the structure and performance are ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to solve the existing TC18 titanium alloy high-strength forgings in the quasi-β forging forming process, due to the shape of the pre-forging ribs and the final forging ribs are similar, the amount of deformation of the top part of the ribs Small, easy to form deformation dead zone, resulting in unqualified performance of forgings, providing a method to improve the uniformity of quasi-β forging deformation of titanium alloy high-reinforced forgings

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