Forging forming method of high-toughness titanium ring

Abstract

The invention discloses a forging forming method of a high-toughness titanium ring. The forging forming method of the high-toughness titanium ring is carried out according to the following steps that1, a titanium alloy is blanked into a bar; 2, a titanium alloy pre-rolling ring blank is obtained; 3, the ring blank is subjected to rolling forming; 4, double annealing is conducted; 5, coarse grainsof the ring blank are broken; 6, the coarse broken grains are refined and uniformized; 7, the grains at a beta area of a forging structure are refined; 8, constant-temperature correction is conducted; and 9, low-temperature heat treatment is conducted, and air cooling is conducted to the indoor temperature. The forging forming method is simple, clear and convenient to apply; the content of the alpha stable is increased appropriately, and the content of the beta stable element is decreased appropriately, so that the number of alpha strips in the titanium alloy is increased; and therefore, after subsequent forging, a mesh basket structure with the high confusion degree can be obtained for improving the high-temperature strength of a forging, and meanwhile, the high-temperature tensile strength of the forging is improved.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and relates to a forging forming method of a high-toughness titanium ring. Background technique [0002] In order to obtain the required mechanical properties, appropriate post-forging heat treatment will be performed on titanium alloy forgings. The commonly used heat treatment methods are various annealing and quenching aging. Annealing generally includes single annealing and double annealing. Quenching aging is suitable for alloying with a higher degree. High-strength titanium alloys and near-β titanium alloys. The above conventional standard high and low temperature treatment system can make titanium alloy forgings obtain good comprehensive mechanical properties, but when the shape of the forging is complex, it will cause uneven thermal stress and structural transformation stress, causing warping and deformation of the forging, which cannot be put into use, and the toughness of th...

AI Technical Summary

Problems solved by technology

The above conventional standard high and low temperature treatment system can make titanium alloy forgings obtain good comprehensive mechanical properties, but when the shape of the forging is complex, it will cause uneven thermal stress and structural transformation stress, causing warping and deformation of the forging, which cannot be put into use, and the toughness of the forging and fatigue strength are poor