Preparation method for TA17 titanium alloy plate

Abstract

The invention discloses a method for preparing a TA17 titanium alloy plate, which comprises the following steps: placing a TA17 slab in a heating furnace for heating; separating the titanium plate from the upper and lower stainless steel backing plates; rolling the slab for the first heat; After the rolling is completed, the slab is cut and blanked along the length direction according to the required width of the finished plate; the second fire rolling is carried out; the slab is slit and blanked along the length direction. The invention utilizes the principle that the heredity of the tissue formed by processing at high temperature can be changed at the same temperature to ensure the billet rolling temperature of TA17, reduce the obvious cracking phenomenon of TA17 titanium alloy plate caused by temperature drop in the traditional process, and also reduce the The amount of grinding in the later period is reduced, and the upper and lower backing plates can be used repeatedly, saving costs.

Description

technical field [0001] The invention belongs to the technical field of preparation of titanium and titanium alloy plates, and in particular relates to a preparation method of TA17 titanium alloy plates. Background technique [0002] TA17 alloy is a near-alpha titanium alloy developed by the Prometheus Central Institute of Structural Materials of the former Soviet Union. Element) improves the strength and heat resistance of the alloy, has no obvious effect on the plasticity of the alloy, and a small amount of V (β stable element) can refine the grain and improve the plasticity of the process. The alloy has the characteristics of medium strength, good welding performance, excellent seawater corrosion resistance, high static force and cycle strength, etc. It is mainly used in the manufacture of pipelines, valves, evaporators, condensers and compressors of aircraft engines. Parts such as machine discs, blades and drums. [0003] Because the titanium alloy plate is a single-pha...

AI Technical Summary

Problems solved by technology

[0004] The problems with this method are: (1) It is not suitable for the production of TA17 slabs with various width specifications, because the first fire widening and reversing can only form a fixed width specification, and the subsequent non-changeable direction will cause a slab to only be produced One specification (width) of the plate, and the application of the alloy plate is a variety of width specifications, which causes a large amount of material accumulation and inventory for the manufacturer; (2) the alloy plate is easy to crack, and the structure is still in the first fire rolling. Staying at the stage of slab structure with coarse grains, even high temperature and large deformation will easily cause serious cracks on the surface and edges, resulting in low yield and complex and difficult surface treatment process