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Upsetting method of alpha-beta-phase titanium alloy cake blank

A technology for titanium alloys and cake blanks, which is applied in the field of upsetting of cake blanks, can solve the problems of uneven deformation of cake blanks, uneven structure and performance of cake blanks, and influence on product structure and performance, so as to achieve uniform deformation and improve the performance of forgings. Effect

Inactive Publication Date: 2016-04-27
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 of alpha-beta-phase titanium alloy cake blank
  • Upsetting method of alpha-beta-phase titanium alloy cake blank
  • Upsetting method of alpha-beta-phase titanium alloy cake blank

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specific Embodiment approach

[0030] 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.

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

[0032] Step 1: General upsetting.

[0033] Heat the α-β 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- The deformation of the middle area of ​​the β-phase titanium alloy cake blank can reach 25% to 35%, and the bar is upset to a height of H 0 =(0.65~0.75)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...

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Abstract

The invention discloses an upsetting method of an alpha-beta-phase titanium alloy cake blank. The upsetting method comprises the following steps: at first, an alpha-beta-phase titanium alloy bar is upset in a conventional method, so as to enable the deformation of the alpha-beta-phase titanium alloy bar to be up to 25% to 35%; and the end surface of a middle cake blank is locally deformed by a dedicated tool. The upsetting method has the advantages that defects such as deformation dead zones generated in a conventional upsetting method can be eliminated effectively, and the structure homogeneity of the alpha-beta-phase titanium alloy cake blank can be improved effectively, so that the performance of a forging is improved. The upsetting method is used for upsetting the alpha-beta-phase titanium alloy cake blank.

Description

technical field [0001] The invention relates to an upsetting method for a cake base, in particular to an upsetting method for an alpha-beta 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 structu...

Claims

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Application Information

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IPC IPC(8): B21J5/08
CPCB21J5/08
Inventor 郑永灵斯庆阳卢艳罗通吴超
Owner GUIZHOU ANDA AVIATION FORGING
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