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Forming method of titanium alloy thin-walled casing

A thin-walled shell and titanium alloy technology, which is applied in the field of forming titanium alloy thin-walled shells, can solve the problems of high resistivity and difficult forming of titanium alloy materials, and achieve good forming effects, simple methods, and avoid springback Effect

Inactive Publication Date: 2013-11-20
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium alloy material has a large resistivity, so it is difficult to form

Method used

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  • Forming method of titanium alloy thin-walled casing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, forming a titanium alloy thin-walled shell with a wall thickness of 0.2mm is carried out by:

[0019] Such as figure 1 As shown, the die 1 (the inner height is 20mm, the ball radius SR is 30mm) is fixed on the working table of the press, and the bottom center of the die 1 is provided with a vent hole for releasing the air pressure in the cavity of the die 1 6. Place the titanium alloy plate 2 with a thickness of 0.2mm on the die 1, and set the lining plate 3 above the titanium alloy plate 2. The lining plate 3 is an aluminum plate with a thickness of 0.3mm, and place the blank holder 4 on the lining plate 3, the blank holder 4 is made of nylon 66; then the electromagnetic coil 5 is fixed on the upper slider of the press, and the upper slider of the press moves downward so that the electromagnetic coil 5 is in close contact with the blank holder 4; finally, the electromagnetic coil 5 is formed by electromagnetic forming. The electromagnetic coil 5 is...

Embodiment 2

[0022] In this embodiment, forming a titanium alloy thin-walled shell with a wall thickness of 1mm is carried out by:

[0023] Such as figure 1 As shown, the die 1 (with an inner height of 25 mm and a ball radius SR of 40 mm) is fixed on the working table of the press, and the center of the bottom of the die 1 is provided with a vent hole for releasing the air pressure in the cavity of the die 1 6. Place the titanium alloy plate 2 with a thickness of 1mm on the die 1, and set the lining plate 3 above the titanium alloy plate 2. The lining plate 3 is a copper plate with a thickness of 2mm, and place the blank holder 4 on the lining plate 3 , the blankholder 4 is made of common ABS; then the electromagnetic coil 5 is fixed on the upper slider of the press, and the upper slider of the press moves downward so that the electromagnetic coil 5 is in close contact with the blankholder 4; finally, the electromagnetic The coil 5 is discharged, and the discharge voltage is 13KV. The lin...

Embodiment 3

[0026] In this embodiment, forming a titanium alloy thin-walled shell with a wall thickness of 2mm is carried out by:

[0027] Such as figure 1 As shown, the die 1 (the inner height is 45mm, the ball radius SR is 50mm) is fixed on the working table of the press, and the bottom center of the die 1 is provided with a vent hole for releasing the air pressure in the cavity of the die 1 6. Place the titanium alloy plate 2 with a thickness of 2mm on the die 1, and set the lining plate 3 above the titanium alloy plate 2. The lining plate 3 is a copper plate with a thickness of 5mm, and place the blank holder 4 on the lining plate 3 , the blank holder 4 is made of high pressure resistant and heat-resistant polytetrafluoroethylene; then the electromagnetic coil 5 is fixed on the upper slider of the press, and the upper slider of the press moves downward so that the electromagnetic coil 5 is in close contact with the binder ring 4; Finally, the electromagnetic coil 5 is discharged by t...

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Abstract

The invention discloses a forming method of a titanium alloy thin-walled casing. The forming method comprises the steps as follows: a concave mold is fixed on the workbench of a press; a titanium alloy plate 0.2-4 mm in thickness is placed on the concave mold, a lining plate is arranged above the titanium alloy plate, and an edge pressing ring is placed on the lining plate; an electromagnetic coil is fixed on the sliding block of the press, and the electromagnetic coil is contacted with the edge pressing ring since the sliding block on the press runs downwards; the electromagnetic coil is subjected to discharge by adopting an electromagnetic forming method, the lining pate deforms under the action of the electromagnetic force generated by the electromagnetic coil and further prompts the formation of a titanium alloy plate film, and a titanium alloy thin-walled casing 0.2-4 mm in wall thickness is obtained. The forming method has a simple method and a good formation effect. Resilience of the titanium alloy can be effectively avoided by adopting the method to form the titanium alloy thin-walled casing, and finally, the titanium alloy thin-walled casing with high size precision is formed.

Description

technical field [0001] The invention belongs to the technical field of metal material processing and forming, and in particular relates to a forming method of a titanium alloy thin-walled shell. Background technique [0002] Titanium alloy is a metal material with excellent performance, which is widely used in high-tech fields such as aviation, aerospace, chemical industry, electronics, sports, etc. With the development trend of lightweight manufacturing structure and the continuous expansion of application range, many complex shapes, Demand for special titanium alloy thin-walled parts is increasing. However, due to the high degree of work hardening and low elastic modulus of titanium alloy, it causes large springback during forming and uneven shell wall thickness. It is difficult to guarantee the dimensional accuracy of product shell parts by conventional processing methods. Electromagnetic forming is a high-speed forming process developed at present. It is a way to deform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/14
Inventor 郭萍洪权卢亚锋雷文光
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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