Preparation method for TA17 titanium alloy plate

Abstract

The invention discloses a preparation method for a TA17 titanium alloy plate. The preparation method comprises the following steps that a TA17 plate blank is put into a heating furnace to be heated; the titanium plate is separated from an upper stainless steel base plate and a lower stainless steel base plate; the plate blank is subjected to the first heating number of rolling; after the first heating number of rolling, slitting blanking is conducted according to the width needed by the finished plate in the length direction; the second heating number of rolling is conducted; and the plate blank is subjected to slitting blanking in the length direction. According to the preparation method, the principle that the structure heredity formed through machining under high temperature can be changed under the same temperature is used, the TA17 cogging rolling temperature is ensured, the obvious cracking phenomena of the TA17 titanium alloy plate due to temperature drop in a traditional process are reduced, meanwhile, later polishing quantity is reduced, the upper base plate and the lower plate can be used repeatedly, and cost is reduced.

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...

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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