Upsetting method of cobalt-based high-temperature alloy cake blank

A technology for superalloy 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 properties of cake blanks, affecting product structure and performance, etc., 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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  • 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 cobalt-based high-temperature alloy cake blank
  • Upsetting method of cobalt-based high-temperature alloy cake blank
  • Upsetting method of cobalt-based high-temperature alloy cake blank

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[0030] The main chemical element content (percentage by weight) of the alloy is: 0.05% to 0.15% of C content, 20.0% to 24.0% of Cr content, 20.0% to 24.0% of Ni content, 13.0% to 16.0% of W content, 13.0% to 16.0% of W content, La content 0.03% ~ 0.12%, Si content 0.20% ~ 0.50%, Fe content ≤ 0.30%, B content ≤ 0.015%, Mn content ≤ 1.25%, P content ≤ 0.020%, S content ≤ 0.015 %, containing Ag ≤ 0.0010%, containing Bi ≤ 0.0001%, containing Pb ≤ 0.0010%, containing Cu ≤ 0.07%, and the balance being Co.

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

[0032] Step 1: General upsetting.

[0033] Heat the cobalt-based superalloy 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 cobalt-based superalloy The deformation of the middle area of ​​the cake blank can reach 18% to 25%, and the bar is upset to a height of...

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Abstract

The invention discloses an upsetting method of a cobalt-based high-temperature alloy cake blank. The method comprises the following steps: upsetting a cobalt-based high-temperature alloy bar by a conventional method until the deformation of the cobalt-based high-temperature alloy bar reaches 18 to 25%; partially deforming the end surface of a middle cake blank through a special tooling. With the adoption of the method, the defects such as a dead deformation area in the conventional upsetting method can be effectively removed, the structure uniformity of the cobalt-based high-temperature cake blank can be effectively improved, and thus the performance of a forge piece can be improved. The method is applied to the upsetting of the cobalt-based high-temperature 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 a cobalt-based high-temperature 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 stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/08
CPCB21J5/08
Inventor 王龙祥范茂艳杨志国刘成潘俊杰
Owner GUIZHOU ANDA AVIATION FORGING
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