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Forging method of high uniform Ti632211 titanium alloy sheet

A technology of ti632211 and titanium alloy, which is applied in the forging field of high-uniform Ti632211 titanium alloy plate, can solve the problem of Ti632211 titanium alloy plate with less forging and other problems, and achieve the effect of uniform structure and excellent structure uniformity

Active Publication Date: 2018-05-18
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few studies on forging and forming of Ti632211 titanium alloy sheet

Method used

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  • Forging method of high uniform Ti632211 titanium alloy sheet
  • Forging method of high uniform Ti632211 titanium alloy sheet
  • Forging method of high uniform Ti632211 titanium alloy sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Blanking: Ti632211 titanium alloy ingots are subjected to upsetting and pulling at 1150°C, the deformation is controlled at 45%, the coarse as-cast structure is fully broken, and air-cooled after forging;

[0018] 2) Intermediate forging: upsetting 3 times at 80°C above the phase transition point of the Ti632211 titanium alloy, and controlling the deformation of each fire at 40%, and then upsetting in the form of flat square upsetting at 40°C below the phase transition point of the Ti632211 titanium alloy Pulling 3 times, the deformation of each fire is controlled at 30%, in order to refine the grain, water cooling is used after each fire forging;

[0019] 3) Finished forging: at 40°C below the β-transition point of the Ti632211 titanium alloy, elongate with a deformation of 15% to produce a highly uniform Ti632211 titanium alloy plate.

Embodiment 2

[0021] 1) Blanking: Ti632211 titanium alloy ingots are subjected to upsetting and pulling at 1200°C, the deformation is controlled at 50%, the coarse as-cast structure is fully broken, and air-cooled after forging;

[0022] 2) Intermediate forging: Upsetting and drawing 4 times at 100°C above the phase transition point of Ti632211 titanium alloy, the amount of deformation per fire is controlled at 50%, and then upsetting in the form of flat square upsetting at 50°C below the phase transition point of Ti632211 titanium alloy Pulling 2 times, the deformation of each fire is controlled at 30%, in order to refine the grain, water cooling is used after each fire forging;

[0023] 3) Finished forging: 50°C below the β-transition point of the Ti632211 titanium alloy, elongated with a deformation of 20% to produce a highly uniform Ti632211 titanium alloy plate.

[0024] Depend on Figure 1 to Figure 3 It can be seen that the microstructure of the H=110mm thick plate is basically comp...

Embodiment 3

[0026] 1) Blanking: Ti632211 titanium alloy ingots are subjected to upsetting and pulling at 1180°C, the deformation is controlled at 40%, the coarse as-cast structure is fully broken, and air-cooled after forging;

[0027] 2) Intermediate forging: Upsetting and drawing 4 times at 50°C above the phase transition point of Ti632211 titanium alloy, the deformation of each fire is controlled at 45%, and then upsetting in the form of flat square upsetting at 20°C below the phase transition point of Ti632211 titanium alloy Pulling 4 times, the deformation of each fire is controlled at 25%, in order to refine the grain, water cooling is used after each fire forging;

[0028] 3) Finished forging: at 60°C below the β-transition point of the Ti632211 titanium alloy, stretch it with a deformation of 10% to make a highly uniform Ti632211 titanium alloy plate.

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Abstract

Disclosed is a forging method of a high uniform Ti632211 titanium alloy sheet. The forging method comprises the steps that a Ti632211 titanium alloy ingot is subjected to cogging at 1150 DEG C-1200 DEG C, deformation is controlled at 40%-60%, and air cooling after forging is carried out; 3-5 times of upsetting and drawing are carried out at 20 DEG C-100 DEG C above a phase transformation point ofthe Ti632211 titanium alloy, and deformation of every heating number is controlled at 35%-50%; 2-4 times of upsetting and drawing are carried out at 20 DEG C-50 DEG C below the phase transformation point of the Ti632211 titanium alloy, deformation of every heating number is controlled at 25%-40%, a mode of flat-square upsetting and drawing is adopted in the process of forging, and water cooling iscarried out after every heating number of forging; and the Ti632211 titanium alloy is subjected to drawing out at the deformation of 10%-30% and at the temperature of 30-60 DEG C below a [beta] phasetransformation point of the Ti632211 titanium alloy to obtain the high uniform Ti632211 titanium alloy sheet. The forging method of the high uniform Ti632211 titanium alloy sheet is subjected to repeated upsetting and drawing above the phase transformation point, the stamping and stretching below the phase transformation point adopts the mode of flat-square stamping and stretching, so that structures of different parts of blank are more even, and the middle forging adopts water cooling to further refine a grain. According to the forging method of the high uniform Ti632211 titanium alloy sheet, a qualified Ti632211 titanium alloy panel with H being greater than or equal to 110mm can be produced to meet design requirements, and the qualified Ti632211 titanium alloy panel has excellent homogeneity of structure and is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of nonferrous metal processing, in particular to a forging method for a highly uniform Ti632211 titanium alloy plate. Background technique [0002] Ti632211 titanium alloy, also known as Ti62A titanium alloy, is an α+β type titanium alloy, and its nominal composition is Ti-6Al-3Mo-2Sn-2Zr-1Cr-1V. The alloy is a high-strength, high-toughness damage-tolerant titanium alloy researched and developed on the basis of Ti-6222S alloy through reasonable composition design. It can be made into plates, bars and various die forgings, which are used in aircraft structural parts and other places that require high alloy damage tolerance performance. The alloy is widely used in aviation, aerospace, navigation and other fields, and its shape is U-shaped, box-shaped, joint-shaped, etc. [0003] At present, there are few studies on forging and forming of Ti632211 titanium alloy sheet. The processing technology will have a certain deg...

Claims

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Application Information

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IPC IPC(8): B21J1/02C22F1/18
CPCB21J1/025C22F1/183
Inventor 杨晶王涛杜玉俊任晓龙雷锦文杜予晅
Owner 西部超导材料科技股份有限公司
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