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Isotropic rolling method for alpha-beta two-phase titanium alloy rectangular ring piece

A rectangular ring, isotropic technology, applied in the direction of metal rolling, etc., can solve the problems that the mechanical properties of the ring can not be guaranteed, achieve consistency, and the radial mechanical properties and axial mechanical properties are greatly different.

Inactive Publication Date: 2016-03-09
GUIZHOU ANDA AVIATION FORGING
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AI Technical Summary

Problems solved by technology

The production of rectangular rings is mostly carried out by radial rolling. The rings and blanks are designed at the same height. The tapered rollers only play the role of preventing the rings from climbing and limiting the height increase of the rings. The axial deformation is small. As a result, the radial mechanical properties of the ring are quite different from the axial mechanical properties
With the development and progress of ring rolling technology, people have gradually mastered the radial / axial bidirectional rolling forming method. The axial mechanical properties of rectangular rings produced by this method have been greatly improved. However, it is still not possible. Ensure that the mechanical properties of the ring are consistent in all directions

Method used

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  • Isotropic rolling method for alpha-beta two-phase titanium alloy rectangular ring piece

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[0043] The main chemical element content (percentage by weight) of the alloy is: Al content 5.5%-6.8%, V content 3.5%-4.5%, Fe content ≤ 0.30%, C content ≤ 0.10%, N content ≤ 0.05 %, H content ≤0.015%, O content ≤0.20%, other elements individually ≤0.10% and sum ≤0.40%, and the balance being Ti.

[0044]The steps of this method are as follows:

[0045] Heat the α-β two-phase titanium alloy bar blanked according to the specifications to the forging temperature, and after upsetting, punching, and pre-rolling, it is made into a material with a height of H 1 , thickness B 1 , the outer diameter is R 1 rectangular ring blank;

[0046] Such as figure 1 As shown, the rectangular ring blank 1 is loaded into the ring rolling mill, the core roll 3 passes through the middle of the rectangular ring blank 1, the core roll 3 is driven and the rectangular ring blank 1 approaches the main roll 2, and then the tapered roll 4 is driven Near the other side of the rectangular ring blank 1, t...

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Abstract

The invention discloses an isotropic rolling method for an alpha-beta two-phase titanium alloy rectangular ring piece. The method includes the steps that after an alpha-beta two-phase titanium alloy bar is heated to a forging temperature, a rectangular ring billet is manufactured through upsetting, punching and pre-rolling; and then the rectangular ring billet is mounted on a looping mill, a tapered roller is lifted by h which is equal to 5-10 mm to enable the rectangular ring billet to incline, and then roll forming is carried out to obtain the alpha-beta two-phase titanium alloy rectangular ring piece. By means of the method, the flowing direction of materials in rolling is changed, so that the mechanical properties of the rectangular ring piece in all directions are kept consistent, and the comprehensive mechanical property of the rectangular ring piece is improved. The method is used for producing the isotropic alpha-beta two-phase titanium alloy rectangular ring piece.

Description

technical field [0001] The invention relates to a rolling method of an alpha-beta two-phase titanium alloy rectangular ring, in particular to an isotropic rolling method for an alpha-beta two-phase titanium alloy rectangular ring. Background technique [0002] Ring rolling is currently one of the most effective means of producing high-performance seamless rings, and has been widely used in many fields such as aviation and aerospace. The production of rectangular rings is mostly carried out by radial rolling. The rings and blanks are designed at the same height. The tapered rollers only play the role of preventing the rings from climbing and limiting the height increase of the rings. The axial deformation is small. As a result, the radial mechanical properties of the ring are quite different from the axial mechanical properties. With the development and progress of ring rolling technology, people have gradually mastered the radial / axial bidirectional rolling forming method. ...

Claims

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Application Information

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IPC IPC(8): B21H1/06
CPCB21H1/06
Inventor 叶俊青成陆祥俞应炜文瑞何昱
Owner GUIZHOU ANDA AVIATION FORGING
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