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Preparation method of Ti2AlNb alloy large special-shaped casing ring piece

A special-shaped and large-scale technology, which is used in the preparation of Ti2AlNb alloy large-scale special-shaped casing rings, can solve problems such as uneven deformation of forgings, and achieve the effects of avoiding uneven deformation, reducing dependence and improving deformation uniformity.

Active Publication Date: 2022-07-15
BEIJING CISRI GAONA TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it brings new problems such as uneven deformation of forgings caused by direct forming of tire molds.

Method used

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  • Preparation method of Ti2AlNb alloy large special-shaped casing ring piece
  • Preparation method of Ti2AlNb alloy large special-shaped casing ring piece
  • Preparation method of Ti2AlNb alloy large special-shaped casing ring piece

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preparation example Construction

[0025] see Figure 1 to Figure 5 , in some embodiments of the present invention provides a Ti 2 The preparation method of AlNb alloy large special-shaped casing ring includes the following steps:

[0026] (A) Ti 2 AlNb alloy bars are subjected to upsetting, punching and pre-rolling treatments to obtain rectangular ring billets;

[0027] (B) the rectangular ring blank is loaded into the boring tire mold and carries out boring processing to obtain the special-shaped blank I;

[0028] (C) the small end of the special-shaped blank I is subjected to a boring process, and the small end of the special-shaped blank I is all pressed into the boring tire mold to obtain the special-shaped blank II;

[0029] (D) Turn the bulky tire mold and the special-shaped blank II as a whole at 180°C, and perform the bulky treatment on the big end of the special-shaped blank II. ;

[0030] (E) Rolling the special-shaped billet III to obtain Ti 2 AlNb alloy large special-shaped casing ring.

[0...

Embodiment 1

[0073] Ti provided in this example 2 The preparation method of AlNb alloy large special-shaped casing ring includes the following steps:

[0074] (A) in Ti 2 The surface of the AlNb alloy bar is evenly coated with thermal insulation coating, heated to 980 ℃, and the Ti 2 The AlNb alloy bar is heat-wrapped, and after being kept at 980°C for 60 minutes, upsetting with a deformation of 10% is performed to obtain a blank a; then the blank a is placed in the punching die 1, and the blank a is punched with a punch 2 Hole to obtain billet b; apply thermal insulation paint on the surface of billet b, heat it to 1030 ° C, heat the billet b after heat penetration, and carry out pre-rolling with a total deformation of 15% after holding at 1030 ° C for 60 minutes to obtain a rectangular ring billet ;

[0075] Among them, the inner hole radius of the punching tire mold 1 In the formula, R 1 is the radius of the blank a; the H 1 is the height of blank a, r 1 is the inner hole radius...

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Abstract

The invention relates to the technical field of casing ring piece preparation, in particular to a preparation method of a Ti2AlNb alloy large special-shaped casing ring piece. The preparation method comprises the following steps: (A) performing upsetting treatment, punching treatment and pre-rolling treatment on a Ti2AlNb alloy bar to obtain a rectangular ring blank; (B) performing stuffy molding treatment on the rectangular ring blank to obtain a special-shaped blank I; (C) the small head end of the special-shaped blank I is subjected to closed molding treatment, the small head end of the special-shaped blank I is completely pressed into a closed molding bed, and a special-shaped blank II is obtained; (D) turning over the closed molding bed and the special-shaped blank II as a whole by 180 DEG C, performing closed molding treatment on the large-head end of the special-shaped blank II, and completely pressing the large-head end of the special-shaped blank II into the closed molding bed to obtain a special-shaped blank III; and (E) rolling the special-shaped blank III. According to the method, the deformation uniformity of the large special-shaped casing ring piece is effectively improved, and the phenomenon that the large special-shaped casing ring piece is not fully filled is avoided.

Description

technical field [0001] The invention relates to the technical field of the preparation of casing rings, in particular to a Ti 2 Preparation method of AlNb alloy large special-shaped casing ring. Background technique [0002] Ti 2 AlNb-based alloy is a new type of lightweight high-temperature structural material. It is an intermetallic compound composed of Ti, Al and Nb. This kind of alloy is mainly composed of two or three phases of O phase, B2 / β phase and α2 phase. The composite structure has the advantages of low density, high elastic modulus, high high temperature strength, high fracture performance, high creep resistance, low thermal expansion performance, non-magnetic and good flame retardant performance; compared with high temperature titanium alloys, it has higher usage Temperature, creep resistance and high temperature strength; its density and thermal expansion coefficient are significantly lower than nickel-based superalloys, it is the best choice to replace tita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 马雄师俊东张晓越李云梁晓波黎汝栋张建伟
Owner BEIJING CISRI GAONA TECH
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