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Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment

An aluminum alloy bracket, heat treatment deformation technology, applied in thin-walled cavity easily deformed aluminum alloy parts, thin-walled cavity structure aluminum alloy bracket heat treatment deformation control field, can solve the problem that cold calibration cannot be satisfied and the deformation amount of machining is large. , complex structure and other problems, to achieve the effect of simple structure, solving workpiece deformation and easy operation

Active Publication Date: 2015-04-08
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention discloses a heat treatment deformation control method for a thin-walled cavity structure aluminum alloy bracket, which aims to overcome the shortcomings of complex structure of the thin-walled cavity structure aluminum alloy bracket workpiece, large machining deformation, and unsatisfactory cold correction, and can effectively Fully guarantee the requirements of subsequent assembly, and the performance indicators meet the design requirements

Method used

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  • Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment
  • Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment
  • Method for controlling deformation of thin-walled aluminum alloy bracket with cavity structure during heat treatment

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specific Embodiment approach

[0030] The specific embodiment is carried out according to the following process steps:

[0031] The first step is to determine the way of entering the furnace: the workpiece is placed vertically in the long direction;

[0032] The second step is to determine the heating and heat preservation process parameters: the workpiece is heated to 280 ° C, and heat preservation is 30 minutes;

[0033] The third step, rapid water quenching: less than 15s transfer time, the workpiece quickly enters the water, the water temperature is 30°C; the workpiece stays in the water for 5 minutes;

[0034] The fourth step is to correct the shape in sections: as attached figure 2 As shown, the workpiece 1 is placed on the shape-calibrating platform, and the shape-calibrating cushion block 2 is set under it. The hydraulic machine 3 is used for the shape-calibration. First, the shape is calibrated at 1 / 4 of the long direction of the workpiece, and then the 3 / 4 of the long direction of the workpiece ...

Embodiment 2

[0037] The specific embodiment is carried out according to the following process steps:

[0038] The first step is to determine the way of entering the furnace: the workpiece is placed vertically in the long direction;

[0039] The second step is to determine the heating and heat preservation process parameters: the workpiece is heated to 290°C and held for 20 minutes;

[0040] The third step, water quenching: less than 15s transfer time, the workpiece enters the water quickly, the water temperature is 30°C, and the workpiece stays in the water for 10 minutes;

[0041] The fourth step, segmented shape correction: use the hydraulic press 1 to calibrate the shape of the 1 / 4 part of the long direction of the workpiece, 2 then calibrate the shape of the 3 / 4 part of the long direction of the workpiece, and finally calibrate the shape of the 1 / 2 part of the long direction of the workpiece;

[0042] The fifth step, tooling and shape: calibrate the finished workpiece and immediately ...

Embodiment 3

[0044] The specific embodiment is carried out according to the following process steps:

[0045] The first step is to determine the way of entering the furnace: the workpiece is placed vertically in the long direction;

[0046] The second step is to determine the heating and heat preservation process parameters: the workpiece is heated to 285°C and held for 25 minutes;

[0047] The third step, water quenching: less than 15s transfer time, the workpiece enters the water quickly, the water temperature is 25°C, and the workpiece stays in the water for 5 minutes;

[0048] The fourth step, segmented shape correction: use the hydraulic press 1 to calibrate the shape of the 1 / 4 part of the long direction of the workpiece, 2 then calibrate the shape of the 3 / 4 part of the long direction of the workpiece, and finally calibrate the shape of the 1 / 2 part of the long direction of the workpiece;

[0049] The fifth step, tooling and shape: calibrate the workpiece and immediately install th...

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Abstract

The invention relates to a method for controlling the deformation of a thin-walled aluminum alloy bracket with a cavity structure during heat treatment. The method comprises the following steps: (1) defining the arrangement manner of a workpiece in a heating furnace according to characteristics of a workpiece; (2) heating and carrying out heat preservation; (3) quickly feeding the workpiece into water and quenching; (4) straightening section by section by virtue of an oil hydraulic press; and (5) maintaining the shape with a fixture and naturally aging. The method has the advantages that by combination of heating and carrying out heat preservation, rapid cooling, straightening section by section and maintaining the shape with the fixture, the problem of the deformation of the thin-walled aluminum alloy with the cavity structure is solved. The method belongs to the field of heat treatment of a deformed aluminum alloy and is suitable for thin-walled deformed aluminum alloy parts.

Description

technical field [0001] The invention belongs to the field of heat treatment of deformed aluminum alloys, and relates to a heat treatment deformation control method for an aluminum alloy bracket with a thin-wall cavity structure, which is suitable for easily deformable aluminum alloy parts with thin-wall cavity structures. Background technique [0002] Aluminum alloy structural parts are widely used in aerospace, shipbuilding, rail transit and other fields due to their excellent performance, the ability to form complex components, and low cost. With the continuous improvement of manufacturing technical index requirements, the structural form of the product is becoming more and more complex, and the traditional heat treatment process will produce greater deformation. The thin-wall cavity structure aluminum alloy bracket is made of 2A12 deformed aluminum alloy, and the heat treatment state is quenched and natural aging. This aluminum alloy is widely used in aerospace, rail tran...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/002C22F1/04
Inventor 贺晓军陈磊方声远刘洋
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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