Upsetting method for alpha-phase titanium alloy biscuit

A titanium alloy and cake blank technology, which is applied in the field of cake blank upsetting, can solve problems such as uneven deformation of cake blank, uneven structure and performance of cake blank, and influence on product structure and performance, and achieve the goal of improving forging performance and uniform deformation Effect

Inactive Publication Date: 2016-05-18
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with other areas of the cake base, this area has little or no deformation, resulting in uneven deformation of the cake base
The deformation inhomogeneity directly affects the inhomogeneity of the structure and properties of the cake blank, and even has a negative impact on the subsequent forging process, and finally affects the structure and properties of the product.

Method used

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  • Upsetting method for alpha-phase titanium alloy biscuit
  • Upsetting method for alpha-phase titanium alloy biscuit
  • Upsetting method for alpha-phase titanium alloy biscuit

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specific Embodiment approach

[0030] The main chemical element content (percentage by weight) of the alloy is: Al content 4.0% ~ 6.0%, Sn content 2.0% ~ 3.0%, Fe content ≤ 0.50%, C content ≤ 0.10%, N content ≤ 0.05 %, H content ≤ 0.015%, O content ≤ 0.20%, the balance being Ti, and the sum of other elements ≤ 0.40.

[0031] The steps of this method are as follows:

[0032] Step 1: General upsetting.

[0033] Heat the α-phase titanium alloy bar with a diameter of D and a height of H to the forging temperature in a forging furnace, and keep it warm for a period of time; put the bar on the lower cutting board of the forging press, in order to ensure that the α-phase titanium alloy after upsetting The deformation of the middle area of ​​the cake can reach 24% to 32%, and the bar is upset to a height of H 0 =(0.68~0.76)H, to obtain the middle cake base 1, such as figure 2 shown.

[0034] Step 2: Local upsetting of the upper end surface.

[0035] As shown in the figure, the special tooling 2 is placed hori...

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Abstract

The invention discloses an upsetting method for an alpha-phase titanium alloy biscuit. The upsetting method comprises the steps that an alpha-phase titanium alloy rod is firstly upset according to a conventional method, so that the deformation amount of the rod reaches 24%-32%; and then the end surfaces of a medium biscuit are subjected to partial deformation by using a special fixture. By adopting the upsetting method, the defects of a deformation dead zone and the like in a conventional upsetting method can be effectively eradicated; and the texture uniformity of the alpha-phase titanium alloy biscuit can be effectively improved, so that the performance of a forge piece is improved. The method is applicable to upsetting of the alpha-phase titanium alloy biscuit.

Description

technical field [0001] The invention relates to an upsetting method for a cake base, in particular to an upsetting method for an α-phase titanium alloy cake base. Background technique [0002] Upsetting is a forging process that uses a forging press to reduce the height of the metal material and increase the cross-section. It is an important and most basic process in the forging industry. Provide blanks. Usually, during the upsetting process of the cake blank, due to the great friction between the upper and lower cutting boards of the forging press and the upper and lower end surfaces of the bar blank, there will eventually be a certain deformation dead zone on the upper and lower end surfaces of the cake blank (such as figure 1 shown). Compared with other areas of the cake base, this area has little deformation or even no deformation, resulting in uneven deformation of the cake base. The deformation inhomogeneity directly affects the inhomogeneity of the structure and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/08
CPCB21J5/08
Inventor 徐东欧阳斌田丰杜常鹏杨文宇
Owner GUIZHOU ANDA AVIATION FORGING
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