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Molding method for multistep large profiled ring made of iron-based high-temperature alloy

A technology of iron-based high-temperature alloy and special-shaped ring, which is applied in metal rolling and metal processing equipment, etc. It can solve the problems of affecting the forming effect, unreasonable matching between blank and mold, and unreasonable blank or mold design, so as to overcome the sudden change of section more area effects

Inactive Publication Date: 2016-04-20
GUIZHOU ANDA AVIATION FORGING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For complex multi-step special-shaped rings, when this method is used for forming, the forming effect will be seriously affected due to the unreasonable design of the blank or the mold, or the unreasonable matching of the blank and the mold during the rolling process.

Method used

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  • Molding method for multistep large profiled ring made of iron-based high-temperature alloy
  • Molding method for multistep large profiled ring made of iron-based high-temperature alloy
  • Molding method for multistep large profiled ring made of iron-based high-temperature alloy

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specific Embodiment approach

[0032] The main chemical element content (percentage by weight) of the alloy is: C content≤0.06%, Si content 0.07%~0.35%, Ni content 35.0%~40.0%, Co content 12.0%~16.0%, Nb+ Ta content 4.3%~5.2%, Ti content 1.3%~1.8%, Cr content ≤1.00%, Al content ≤0.20%, Mn content ≤1.00%, Cu content ≤0.50%, B content ≤0.012 %, S content≤0.015%, P content≤0.015%, and the balance is Fe.

[0033] The steps of this method are as follows:

[0034] Step 1: Prepare intermediate ring blank

[0035] like figure 1 As shown, according to the structural characteristics of the iron-based superalloy multi-step large-scale special-shaped ring 1, the cross-section of the forging is cut layer by layer equidistantly from the height direction with the help of drawing software, and the cross-sectional area data of the multi-step large-scale special-shaped ring 1 is obtained and made into a curve 2 ,like figure 2 As shown, the relationship between the cross-sectional area and height of the multi-step large-...

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Abstract

The invention discloses a molding method for a multistep large profiled ring made of an iron-based high-temperature alloy. The molding method comprises the steps of preparing an intermediate ring blank under the assist of drawing software; rolling the intermediate ring blank in a ring rolling mill; during rolling, raising the working face where the intermediate ring blank is located by 5-10mm to ensure that a master roller firstly contacts with the lower end of the intermediate ring blank and a die cavity is started to be filled with a metal material from bottom to top to finish the molding of all steps step by step; and then, bulging the rolled multistep large profiled ring. By using the method, the multistep large profiled ring can be achieved, the rib deviation or jumping phenomenon generated when the multistep large profiled ring is molded can be effectively avoided, and furthermore the performances of forgings are improved. The method is suitable for molding the multistep large profiled ring made of the iron-based high-temperature alloy.

Description

technical field [0001] The invention relates to a forming method of a multi-step large-scale special-shaped ring, in particular to a forming method of a multi-step large-scale special-shaped ring of an iron-based superalloy. Background technique [0002] Special-shaped ring forgings are designed according to the contour of the part, which can effectively improve the utilization rate of materials, obtain ideal performance and streamlines that match the contour of the part. However, in reality, the shape of parts is often strange, and it is difficult to design completely according to the outline of the part. It can only be designed as a special-shaped ring forging that is similar to the cross-section of the part and is relatively simple. Compared with the rectangular ring forging, this method uses more materials. Although the rate has increased, the amount of improvement is limited. At present, most of the special-shaped rings formed by rolling are simple special-shaped rings...

Claims

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Application Information

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IPC IPC(8): B21H1/06B21H1/22B21J5/00
CPCB21H1/06B21H1/22B21J5/00
Inventor 杨晋苏海邹朝江王高周建强
Owner GUIZHOU ANDA AVIATION FORGING
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