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Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part

A technology of nickel-based superalloy and special-shaped ring, applied in metal rolling, metal processing equipment and other directions, can solve the problems of affecting the forming effect, unreasonable matching of billet and die, unreasonable billet or die design, etc., to overcome the sudden change of section more area effect

Inactive Publication Date: 2016-05-04
GUIZHOU ANDA AVIATION FORGING
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  • Claims
  • Application Information

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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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  • Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part
  • Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part
  • Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part

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[0032] The main chemical element content (percentage by weight) of the alloy is: C content ≤ 0.08%, Cr content 17.0% ~ 21.0%, Ni content 50.0% ~ 55.0%, Co content ≤ 1.0%, Mo content 2.80% ~3.30%, Al content 0.30%~0.70%, Ti content 0.75%~1.15%, Nb content 4.75%~5.50%, B content ≤0.006%, Mg content ≤0.01%, Mn content ≤0.35 %, Si content ≤0.35%, P content ≤0.015%, S content ≤0.015%, Cu content ≤0.30%, Ca content ≤0.01%, Pb content ≤0.0005%, Se content ≤0.0003% , The balance is Fe.

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

[0034] Step 1: Prepare intermediate ring blank

[0035] Such as figure 1 As shown, according to the structural characteristics of nickel-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 multi-step large-scale special-shaped ring 1 is obtained and curve 2 is drawn. ,Such ...

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Abstract

The invention discloses a forming method of a nickel-based high-temperature alloy multi-step large special-shaped ring part. The forming method comprises the following steps of preparing an intermediate ring blank under the assistance of mappingsoftware at first and then putting the intermediate ring blank into a ring rolling mill for rolling; during rolling, elevating by 5mm-10mm a worktable top where the intermediate ring blank is located, enabling a main roller to contact with a lower end of the intermediate ring blank first, and enabling a metal material to fill a die cavity starting from bottom to top, thereby gradually completing the formation of various steps, and finally, bulging the rolled multi-step large special-shaped ring part. Such a method is capable of realizing multi-step large special-shaped ring parts, and capable of effectively avoiding the phenomenon of rib deflection or drifting during the formation of the multi-step large special-shaped ring parts, thereby improving the properties of forgings. The method is applicable to the formation of the nickel-based high-temperature alloy multi-step large special-shaped ring parts.

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 a nickel-base 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): B21H1/06B21J5/00
CPCB21H1/06B21J5/002
Inventor 叶俊青王斌杨孝荣苏荣智蒋睿华
Owner GUIZHOU ANDA AVIATION FORGING
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