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Isothermal forging forming method of titanium alloy complex sheet forged piece

An isothermal forging and titanium alloy technology, applied in the field of warm forging, can solve the problems of difficulty in forming forgings, unsatisfactory filling of forgings, and easy folding at the cross-section transition, so as to improve the forming quality and realize the effect of forging forming.

Inactive Publication Date: 2016-03-16
GUIZHOU ANDA AVIATION FORGING
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  • Claims
  • Application Information

AI Technical Summary

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 titanium alloy complex sheet forged piece
  • Isothermal forging forming method of titanium alloy complex sheet forged piece
  • Isothermal forging forming method of titanium alloy complex sheet forged piece

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specific Embodiment approach

[0022] The main chemical element content (percentage by weight) of the alloy is: Al content 5.5%-6.8%, V content 3.5%-4.5%, Fe content ≤ 0.30%, C content ≤ 0.10%, N content ≤ 0.05% , H content ≤ 0.015%, O content ≤ 0.20%, other elements individually ≤ 0.10% and the sum ≤ 0.40%, the balance being Ti.

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

[0024] Take a TC4 bar of a certain specification, put it into an electric furnace, heat it to 30°C below the phase transition point, and keep it warm for 270 minutes;

[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 drawn and shaped to make a middle blank, as shown in 2;

[0026] Return the intermediate billet to the furnace and heat it to 30°C below the phase transit...

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Abstract

The invention discloses an isothermal forging forming method of a titanium alloy complex sheet forged piece. The isothermal forging forming method comprises the following steps: first, upsetting a blank on a free forging hammer, and then drawing the upset blank out; controlling the left end of the drawn-out blank to be unchanged, and splitting and drawing out an a position, which is a from the left end of the drawn-out blank, and then wholly upsetting the split and drawn-out blank flat; drawing out and shaping the left end of the wholly upset-flat blank to manufacture an intermediate blank; and finally, conducting isothermal forging forming on the intermediate blank. Through the adoption of the isothermal forging forming method, the forging forming of the titanium alloy complex sheet forged piece is realized effectively, and the forming quality of the titanium alloy complex sheet forged piece is improved. The isothermal forging forming method is used for isothermal forging forming of the titanium alloy complex sheet forged piece.

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 titanium alloy. Background technique [0002] Titanium alloy complex thin plate forging is a complex plate forging. 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 [0003] The technical problem ...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J1/06B21J3/00
CPCB21J5/02B21J1/06B21J3/00
Inventor 占立水李艳英夏春林范茂艳叶康源
Owner GUIZHOU ANDA AVIATION FORGING
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