Isothermal forging forming method of high-temperature alloy complex sheet forging

A high-temperature alloy and isothermal forging technology, which is applied in the field of warm forging and forming, can solve the problems of difficult forming of forgings, easy folding of cross-section transitions, and insufficient filling of forgings, so as to improve the forming quality

Inactive Publication Date: 2016-03-16
GUIZHOU ANDA AVIATION FORGING
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Problems solved by technology

Forgings of this type of structure are difficult to form, especially have high requirements on the shape and quality of the preformed billet. For example, if the size of the forging does not match the final shape, there are partial fillings of the forging, and defects such as folding are prone to occur at the junctions of each section.

Method used

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  • Isothermal forging forming method of high-temperature alloy complex sheet forging
  • Isothermal forging forming method of high-temperature alloy complex sheet forging
  • Isothermal forging forming method of high-temperature alloy complex sheet forging

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[0022] 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.

[0023] The steps of this method are as follows:

[0024] Take a GH4169 alloy bar of a certain specification, put it into an electric furnace, heat it to 980°C, and keep it warm for 270min;

[0025] Take out the heat-preserved bar, upsetting on the free forging hammer, and then elongate; control the left end of the billet to remain unchanged, divide and elongate the distance a from the left end of the billet, and then upset the billet as a whole, as shown in 1 Show; then the left end of the blank is...

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Abstract

The invention discloses an isothermal forging forming method of a high-temperature alloy complex sheet forging. The isothermal forging forming method comprises the following steps: firstly, upsetting a blank on a free forging hammer, and then drawing out; controlling the left end of the blank to be unchanged, carrying out material distribution at the position a away from the left end of the blank, drawing out, and then wholly upset-extruding the blank; then drawing out the left end of the blank, and shaping to prepare an intermediate billet; and finally, carrying out isothermal forging forming on the intermediate billet. The isothermal forging forming method can effectively realize forging forming of the high-temperature alloy complex sheet forging, improves the forming quality of the high-temperature alloy complex sheet forging and is used for isothermal forging forming of the high-temperature alloy complex sheet forging.

Description

technical field [0001] The invention relates to an isothermal forging forming method of complex thin-plate forgings, in particular to an isothermal forging forming method of complex thin-plate forgings of high-temperature alloys. Background technique [0002] High-temperature alloy complex thin-plate forgings are a kind of complex plate forgings. Because the forging has the characteristics of complex internal structure, large variation of cross-sectional dimensions, thin overall thickness and large and irregular external dimensions, the blank is usually formed by casting, but for some parts with high stress conditions, the design requires forging. This type of structural forging is difficult to form, especially for the shape and quality of the preformed billet. If the size of the forging does not match the final shape, there will be partial filling of the forging, and defects such as folding are prone to occur at the junction of each section. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J1/06B21J3/00
CPCB21J5/02B21J1/06B21J3/00
Inventor 黎汝栋高先模蒲思洪欧阳斌刘成
Owner GUIZHOU ANDA AVIATION FORGING
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