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A kind of ultra-low temperature forming device and forming method of aluminum alloy component

An aluminum alloy component, ultra-low temperature technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of poor heat preservation effect of molds, difficult to achieve low temperature, long transfer time, etc., so as to avoid splashing and avoid excessive thinning , Improve the effect of wall thickness distribution

Active Publication Date: 2022-06-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem solved by the invention is that the ultra-low temperature forming transfer time of the existing aluminum alloy components is long, the heat preservation effect of the mold is poor, the low temperature is difficult to achieve, the liquid nitrogen is difficult to seal, the pressure is difficult to control, and it is difficult to form complex components with deep cavities

Method used

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  • A kind of ultra-low temperature forming device and forming method of aluminum alloy component
  • A kind of ultra-low temperature forming device and forming method of aluminum alloy component
  • A kind of ultra-low temperature forming device and forming method of aluminum alloy component

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Effect test

Embodiment 1

[0083] like Figure 5 and Image 6 As shown, the embodiment of the present invention provides an ultra-low temperature forming method for a 5A06 aluminum alloy complex deep cavity curved surface component, wherein the aluminum alloy slab is 1.5 mm thick, and the length, width and height of the prepared aluminum alloy forming component are 792 mm × 392 mm × 315mm, and there are deep cavity surfaces and deep drawing negative angle features, including the following steps:

[0084] Step S1: the upper mold 1 and the lower mold 2 are in the open state, and the solid particle medium is respectively injected into the first medium cavity 11 and the second medium cavity 10 until they are full;

[0085] Step S2: Passing a cooling medium into the first medium cavity 11 and the second medium cavity 10, so that the solid particle medium is cooled to a temperature of -190° C., and kept for 10 minutes, wherein the cooling medium is liquid nitrogen;

[0086] Step S3: placing the pre-cut alum...

Embodiment 2

[0092] like Figure 7-9 As shown, the embodiment of the present invention provides an ultra-low temperature forming method for a 5182 aluminum alloy complex deep cavity curved surface component, wherein the aluminum alloy slab is 1.2 mm thick, and the length, width and height of the prepared aluminum alloy forming component are 1060 mm × 520 mm × 345mm, there are larger stepped surface and convex surface features, including the following steps:

[0093] Step S1: the upper mold 1 and the lower mold 2 are in the open state, and the solid particle medium is respectively injected into the first medium cavity 11 and the second medium cavity 10 until they are full;

[0094] Step S2: Pass a cooling medium into the first medium cavity 11 and the second medium cavity 10, so that the solid particle medium is cooled to a temperature of -180° C., and kept for 20 minutes, wherein the cooling medium is liquid nitrogen;

[0095] Step S3: placing the pre-cut aluminum alloy slab 5 to be forme...

Embodiment 3

[0102] like Figure 10 As shown, the embodiment of the present invention provides an ultra-low temperature forming method for a 2219 aluminum alloy complex curved surface, wherein the aluminum alloy slab is 1 mm thick, and the length, width and height of the prepared aluminum alloy forming member are 388 mm × 156 mm × 118 mm. Larger double curvature surface features, including the following steps:

[0103] Step S1: the upper mold 1 and the lower mold 2 are in the open state, and the solid particle medium is respectively injected into the first medium cavity 11 and the second medium cavity 10 until they are full;

[0104] Step S2: Passing a cooling medium into the first medium cavity 11 and the second medium cavity 10, so that the solid particle medium is cooled to a temperature of -185°C, and kept for 15 minutes, wherein the cooling medium is liquid nitrogen;

[0105] Step S3: quenching the pre-cut aluminum alloy slab 5 to be formed, the solution temperature is 525°C, and the...

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Abstract

The invention provides an ultra-low temperature forming device and forming method for aluminum alloy components, which belong to the technical field of forming thin-walled aluminum alloy components. The shape of the forming groove is matched, and the first medium cavity and the second medium cavity independent of each other are set in the lower mold, and the first medium cavity and the second medium cavity are filled with solid particle medium; the first hydraulic cylinder and the second hydraulic pressure cylinder, the first hydraulic cylinder is connected with the first medium chamber, the second hydraulic cylinder is connected with the second medium chamber; and the cold source, the cold source is connected with the first medium chamber and the second medium chamber. The invention adopts the solid particle medium as the cooling medium and the force transmission medium, which has a good cold storage effect, is easy to realize flexible loading and sealing, and is not easy to splash; and can regulate the deformation sequence and deformation amount of different regions of the aluminum alloy slab to be formed, and coordinate the slab deformation and improve the wall thickness distribution of formed components, and the process flexibility is high.

Description

technical field [0001] The invention relates to the technical field of forming aluminum alloy thin-walled components, in particular to an ultra-low temperature forming device and forming method of aluminum alloy components. Background technique [0002] As a lightweight, high-strength-ratio material, aluminum alloy is widely used in the manufacture of the main structure of aircraft such as aviation and aerospace. For example, 60% of the fuselage structure of Airbus A380 is made of aluminum alloy. In recent years, heavy rockets, large aircraft, new energy vehicles, etc. have particularly urgent needs for lightweight, high-strength aluminum alloy complex thin-walled components. [0003] Two methods are generally adopted in the existing disclosed technologies related to ultra-low temperature forming: one is to apply the required deformation load by using a rigid punch. However, the slab needs to be cooled with liquid nitrogen in advance, and then transferred to the mold for fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/00B21D37/16
CPCB21D26/00B21D37/16
Inventor 刘伟苑世剑
Owner HARBIN INST OF TECH
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