Ultralow-temperature flexible forming method for aluminum-lithium alloy complex thin-wall structural part

A technology of thin-walled structural parts and aluminum-lithium alloys, which is applied to the ultra-low temperature flexible forming of aluminum-lithium alloy complex structural parts and the field of forming aluminum-lithium alloy thin-walled complex structural parts, can solve the problem of large forming springback and difficulty in ensuring the shape and dimensional accuracy of components , prone to micro-cracks and other problems

Active Publication Date: 2021-04-20
BEIJING SATELLITE MFG FACTORY
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Problems solved by technology

The purpose of the present invention is to combine the technical advantages of multi-point forming and low-temperature medium forming, and to provide a new phenomenon of plasticizing and strengthening aluminum-lithium alloys at ultra-low temperatures to provide a multi-point punch liquid-filled deep-drawing forming device and method. An ultra-low temperature forming device and forming manufacturing method for al

Method used

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  • Ultralow-temperature flexible forming method for aluminum-lithium alloy complex thin-wall structural part
  • Ultralow-temperature flexible forming method for aluminum-lithium alloy complex thin-wall structural part
  • Ultralow-temperature flexible forming method for aluminum-lithium alloy complex thin-wall structural part

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Embodiment

[0084] Such as Figure 1-Figure 7 As shown, the forming device includes a die base 1, a die cover 2, a double-layer low-temperature resistant sealing ring 5, a first cold insulation layer 6, an ultra-low temperature circumferential sealing ring 7, a multi-point punch head 8, and a punch connection Column 9, punch body 10, first blankholder ring 11, second blankholder inner ring 12, second cold insulation layer 14, aluminum-lithium alloy plate 15, low-temperature forming die pad A16, die seat pad B17, the third cold insulation layer 18, the fourth cold insulation layer 19;

[0085] The die set 2 is a hollow cylinder with an open bottom and the inner cavity of the die set 2, the cavity surrounded by the multi-point punch head 8 of different shapes and the aluminum-lithium alloy plate 15 together form a high-pressure and low-temperature chamber of different shapes. Liquid-filled chamber 3;

[0086] Between the low-temperature die forming cushion block A16 and the die seat cushi...

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Abstract

The invention relates to the technical field of special forming manufacturing processes of aluminum-lithium alloy complex thin-wall structural parts, in particular to an ultralow-temperature flexible forming method for an aluminum-lithium alloy complex structural part, the wall thickness of the structural part is not larger than 5 mm, and the complex structural part is of a spatial curved surface structure in appearance. The device is particularly suitable for forming aluminum-lithium alloy thin-wall complex structural parts. By utilizing the characteristics of plasticization and reinforcement of the aluminum-lithium alloy at ultralow temperature, the aluminum-lithium alloy plate is flexibly formed by adopting an ultralow-temperature flexible forming method, so that the defects that the aluminum-lithium alloy complex thin-wall structural part is difficult to form a complex-shaped component, poor in fracture toughness, easy to generate microcracks during room-temperature forming and the like can be overcome, the forming resilience is large, and the shape and size precision of the component is difficult to guarantee.

Description

technical field [0001] The present invention relates to the technical field of special forming and manufacturing technology of aluminum-lithium alloy complex thin-walled structural parts, and specifically refers to an ultra-low temperature flexible forming method for aluminum-lithium alloy complex structural parts. The structural part means that the shape of the structural part is a space surface structure, and the device is especially suitable for forming thin-walled complex structural parts of aluminum-lithium alloy. Background technique [0002] With the further development of science and technology and the continuous progress of society, lightweight structure plays an increasingly important role in improving resource utilization, reducing energy consumption and improving the performance of parts, and has become one of the development trends of today's manufacturing industry. , and there are mainly two ways to achieve lightweight structure: material and structure: the mat...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/16B21D22/20B21D22/26
Inventor 许爱军宁旭东代国宝张斌赖小明崔超刘淑芬
Owner BEIJING SATELLITE MFG FACTORY
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