Forming method of large TC4 alloy die forging

A die forging and large-scale technology, which is applied in the field of TC4 alloy large-scale die forging forming, can solve the problems of destroying the forging flow line, difficult material filling, and reducing the mechanical properties of the forging, so as to achieve the effect of improving the forming quality.

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

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Problems solved by technology

[0002] The fan blade disc is one of the common parts on the aircraft. This part is large in size and complex in structure. The TC4 alloy material used has high deformation resistance and is not easy to form. Thin, rapid temperature drop, relatively difficult material filling
At present, it can only be formed by machining, which wastes a lot of raw materials, and the damaged forging flow line reduces the mechanical properties of forgings

Method used

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  • Forming method of large TC4 alloy die forging
  • Forming method of large TC4 alloy die forging
  • Forming method of large TC4 alloy die forging

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[0020] 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.

[0021] The steps of this method are as follows:

[0022] Step 1: Prepare rectangular ring blank

[0023] Take a TC4 alloy 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;

[0024] The bar is taken out, and after upsetting and punching, it is rolled into a rectangular ring billet.

[0025] Step 2: Prepare shaped ring blank

[0026] Return the rectangular ring billet to the furnace and heat it to 30°C below the phase transition point; preheat the tire film to 250°C; put the rectangular ring billet into the tire mold and forge it into a special-shaped ring billet 1, such as figure 1 shown.

[00...

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Abstract

The invention discloses a forming method of a large TC4 alloy die forging. The method comprises the following steps: heating a TC4 alloy bar material; upsetting and punching; then rolling to obtain a rectangular ring billet; transferring the rectangular ring billet into a forming die to forge into an irregular ring billet; placing the irregular ring billet into a forming die cavity which iscoated with a lubricant; driving an upper die to downwards press at the speed of being not less than 2mm/s, so as to form the forging. With the adoption of the method, the large TC4 alloy die forging can be effectively formed; a shoulder part of a small head of the forging can be completely filled, and thus the forming quality of the large TC4 alloy die forging can be improved. The method is applied to the formation of the large TC4 alloy die forging.

Description

technical field [0001] The invention relates to a forging forming method, in particular to a forming method of a TC4 alloy large die forging. Background technique [0002] The fan blade disc is one of the common parts on the aircraft. This part is large in size and complex in structure. The TC4 alloy material used has high deformation resistance and is not easy to form. Thin, the temperature drops faster, and the material filling is relatively difficult. At present, it can only be formed by machining, which wastes a lot of raw materials, and destroys the forging flow line, which reduces the mechanical properties of forgings. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a preparation method of barren type to realize the forming method of large TC4 alloy die forgings, so as to improve the large TC4 alloy die forgings and ensure product quality. [0004] In order to solve the above-mentioned technical problems,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J1/06
CPCB21J5/02B21J1/06
Inventor 徐东蒲思洪魏秦川葛波李玉凤
Owner GUIZHOU ANDA AVIATION FORGING
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