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Upsetting method of cake-shapedstainless steel billet

A technology of stainless steel and cake blanks, which is applied in the field of upsetting cake blanks, can solve problems such as 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

Inactive Publication Date: 2016-05-04
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 cake-shapedstainless steel billet
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  • Upsetting method of cake-shapedstainless steel billet

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specific Embodiment approach

[0030] The main chemical element content (percentage by weight) of the steel is: 0.10% to 0.16% of C, 10.50% to 12.00% of Cr, 1.40% to 1.80% of Ni, 1.50% to 2.00% of W, 1.50% to 2.00% of W, The Mo content is 0.35%-0.50%, the V content is 0.18%-0.30%, the Mn content is ≤0.60%, the Si content is ≤0.60%, the S content is ≤0.025%, the P content is ≤0.030%, and the balance is Fe.

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

[0032] Step 1: General upsetting.

[0033] Heat a stainless steel bar with a diameter of D and a height of H in a forging furnace to the forging temperature, 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 the deformation of the middle area of ​​the stainless steel cake after upsetting The amount can reach 45% to 55%, and the bar is upset to a height of H 0 =(0.50~0.55)H, to obtain the middle cake base 1, such as figure 2 shown.

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

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Abstract

The invention discloses an upsetting method of a cake-shapedstainless steel billet. The upsetting method comprises the following steps of upsetting a stainless steel bar by a conventional method first such that the deformation of the stainless steel bar reaches 45%-50%; and then locally deforming an end face of an intermediate billet by using a special fixture. Such a method is capable of effectively eliminating defects such as a deformation dead zone occurring in a conventional upsetting method and also capable of effectively improving the structure uniformity of the cake-shapedstainless steel billet, and therefore, the properties of forgings can be improved. The method is applicable to the upsetting of the cake-shapedstainless steel billets.

Description

technical field [0001] The invention relates to an upsetting method for a cake base, in particular to an upsetting method for a stainless steel 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 properties...

Claims

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Application Information

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IPC IPC(8): B21J5/08
CPCB21J5/08
Inventor 江锦权杨晋刘志棋王高周建强
Owner GUIZHOU ANDA AVIATION FORGING
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