Air expansion and air quenching forming die for strengthened aluminum alloy nearly-conical thin-walled piece and method

A technology for forming molds and aluminum alloys, which is applied in the field of precision sheet metal processing, can solve problems such as poor surface quality and difficulty in controlling the shape accuracy of parts, and achieve the effects of guaranteeing forming accuracy, shortening production cycle, and reducing structural weight

Active Publication Date: 2020-10-09
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a gas expansion and gas quenching forming mold and method for strengthening aluminum alloy near-cone thin-walled parts, which are used to solve the problems of difficult control of the shape accuracy and poor surface quality of parts processed in the prior art, and can effectively Guarantee the precise forming of aluminum alloy structural parts

Method used

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  • Air expansion and air quenching forming die for strengthened aluminum alloy nearly-conical thin-walled piece and method
  • Air expansion and air quenching forming die for strengthened aluminum alloy nearly-conical thin-walled piece and method
  • Air expansion and air quenching forming die for strengthened aluminum alloy nearly-conical thin-walled piece and method

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Embodiment 1

[0055] Heat-treatable strengthened aluminum alloy near-conical thin-walled parts, such as figure 1 As shown, the part material is 2A12 aluminum alloy, the shape is a pot-shaped part with a thickness of 2mm, the diameter of the large end is 600mm, the diameter of the small end is 300mm, and the height is 110mm.

[0056] The heat-treatable and strengthened aluminum alloy near-conical thin-walled part inflated and gas-quenched forming die of this embodiment is as follows: figure 2 As shown, it includes an inflatable lower die 1, an air inlet 2, a sheet material 3, an inflatable upper die 4 and a gas quenching mold 5, the gas quenching mold 5 is equipped with gas quenching nitrogen 6, and the thickness of the sheet material 3 is t=2mm. The material of the air expansion lower mold 1, the air expansion upper mold 4, and the gas quenching mold 5 is 45# steel. Inflatable upper die 4 has an inner profile that matches the outer profile of the formed thin-walled part. The cavity of the...

Embodiment 2

[0064] Heat-treatable strengthened aluminum alloy near-conical thin-walled parts, such as figure 1 As shown, the part material is 2A12 aluminum alloy, the shape is a pot-shaped part with a thickness of 2mm, the diameter of the large end is 600mm, the diameter of the small end is 300mm, and the height is 110mm.

[0065] The heat-treatable and strengthened aluminum alloy nearly conical thin-walled thin-walled parts inflated and gas-quenched forming method of this embodiment are carried out according to the following process steps:

[0066] Step 1: Clip the sheet material 3 between the lower inflatable die 1 and the upper inflatable die 4, and the material of the sheet material 3 is 2A12 aluminum alloy;

[0067] Step 2, heating the lower inflatable mold 4, the upper inflatable mold 1 and the sheet material 3 together to the forming temperature, and the forming temperature is 505°C;

[0068] Step 3, feed gas into the lower mold 1 through the air inlet 2 of the lower mold, the gas...

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Abstract

The invention discloses an air expansion and air quenching forming die for a strengthened aluminum alloy nearly-conical thin-walled workpiece and a method, and belongs to the technical field of precision metal plate machining. The problems that in the prior art, the appearance precision of a machined part is difficult to control, and the surface quality is poor are solved. The air expansion and air quenching forming die comprises an air expansion lower die (1), an air expansion upper die (4) and an air quenching die (5); and a plate material (3) is clamped between the air expansion lower die (1) and the air expansion upper die (4), the air expansion lower die (1) is provided with an air inlet (2), and the air quenching die (5) is filled with air quenching nitrogen (6). According to the dieand method, precise forming of the aluminum alloy structural part can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of precision sheet metal processing, and in particular relates to a mold and method for strengthening an aluminum alloy near-cone thin-walled part by gas inflation and gas quenching. Background technique [0002] Due to its excellent performance, aluminum alloys are widely used in aerospace, rail transit, weaponry and other fields. In the field of aerospace, the integration and lightweight of aluminum alloy structural parts and components are getting higher and higher, and the requirements for manufacturing precision are getting higher and higher. In the field of processing aluminum alloy thin-walled products, the common manufacturing methods of aluminum alloy structural parts mainly include cold forming and casting forming. Due to the low elongation and large springback of aluminum alloy, the aluminum alloy structural parts prepared by cold forming are easy to crack and produce large springback, and the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/021B21D26/031B21D37/16C22F1/04C21D1/673C21D1/613
CPCB21D26/021B21D26/031B21D37/16C22F1/04C22F1/002C21D1/673C21D1/613
Inventor 秦中环李保永姚为韩维群刘奇刘伟肖瑞徐柄桐张天麟丁科迪
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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