A titanium alloy revolving body component and its shape correction method and forming method

A titanium alloy and revolving body technology is applied in the field of titanium alloy material forming to achieve the effect of high thermal expansion coefficient difference, small thermal expansion coefficient difference, and avoiding damage to components

Active Publication Date: 2020-07-14
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the present invention provides a titanium alloy revolving body component and its shape correction method and forming method. The method can precisely and uniformly control the deformation of the component, the dimensional accuracy after shape correction is high, and Up to ±0.2mm, no obvious rebound phenomenon

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  • A titanium alloy revolving body component and its shape correction method and forming method
  • A titanium alloy revolving body component and its shape correction method and forming method
  • A titanium alloy revolving body component and its shape correction method and forming method

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specific Embodiment

[0067] Such as figure 2 As shown in b, this embodiment provides a cylindrical titanium alloy member with a design inner hole size of 800 mm, a coaxiality requirement of 0.2, and a design wall thickness of 5 mm;

[0068] First prepare a titanium alloy component blank by a hot isostatic pressing process, the wall thickness of the blank is 10mm, and the value of m is 5‰, and the shape of the blank is corrected. The specific measures are as follows:

[0069] Before the shape correction, the inner wall of the blank is turned into a smooth cylindrical surface while the wall thickness is reserved for subsequent processing of 2mm, such as image 3 as shown in b. During the processing, the size and position deviation of the outer wall of the component is measured at any time, and the coaxiality between the inner wall and the outer wall of the product is controlled at less than 0.2 after processing.

[0070] 0Cr18Ni9 stainless steel is selected as the material of the calibration mold...

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Abstract

The invention belongs to the technical field of titanium alloy material forming and relates to a titanium alloy rotary component and a shape correction method and forming method thereof. The shape correction method includes: preparing a titanium alloy rotary component blank; machining the inner surface of the titanium alloy rotary component blank to obtain a blank with an inner bore matched with adesigned shape; mounting a shape correction mould into the inner bore of the machined blank, wherein a gap is reserved between the shape correction mould and the blank, and the coefficient of thermalexpansion of a material of the shape correction mould is larger than that of titanium alloy; heating, subjecting the blank to shape correction according to a difference value of the coefficients of thermal expansion, cooling, removing the shape correction mould to obtain a shaped corrected titanium alloy rotary component blank. Component deformation can be controlled accurately and uniformly, dimensional accuracy is high after shape correction and reaches + / -0.2mm, and evident resilience is avoided.

Description

technical field [0001] The invention relates to a titanium alloy revolving body component and its shape correction method and forming method, belonging to the technical field of titanium alloy material forming. Background technique [0002] Titanium alloy rotating body parts include barrels (such as figure 1 As shown in b), conical (such as figure 1 As shown in c) and cone barrel composite (such as figure 1 c) and other structures are widely used in pipelines, shells and other components. [0003] According to the specific structural size, such components can be prepared by precision casting, hot isostatic pressing powder metallurgy and forging machining. In the production process, especially in the development process of test pieces, such components often have structural and dimensional deviations, which often appear as radial dimensions or a certain degree of taper deviation, such as figure 2 As shown, for cylindrical components, the middle part of the target configur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D3/14
CPCB21D3/14
Inventor 徐桂华邓太庆姚草根阴中炜
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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