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Forging technology for automobile aluminum alloy chassis class parts

An aluminum alloy and chassis technology, applied in the field of material processing, can solve the problems of artificial aging, increase production cycle and production cost, and achieve the effect of reducing production cycle, uniform decomposition and reducing production cost.

Inactive Publication Date: 2016-11-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, after the forging is completed, the forgings need to be subjected to solution treatment and artificial aging, which makes the aluminum alloy parts need to be heated multiple times during the aluminum alloy forging process, which increases the actual production cycle and production cost.

Method used

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  • Forging technology for automobile aluminum alloy chassis class parts
  • Forging technology for automobile aluminum alloy chassis class parts
  • Forging technology for automobile aluminum alloy chassis class parts

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Example 1: 6061 aluminum alloy was forged by this process.

[0030] The first step: will be as Figure 4 The 6061 aluminum alloy billet shown (the billet is a bar with a height of 15mm and a diameter of 10mm) is heated to 530°C±5°C, and the holding time is 20min.

[0031] The second step: forging the aluminum alloy blank after the first step of heat preservation, the forging temperature is 430°C-480°C, the deformation amount is 40%, the strain rate is 10 / s, and the size of the aluminum alloy forging after deformation is as follows: Figure 5 shown.

[0032] Step 3: Quenching the aluminum alloy forging formed in the second step.

[0033] The fourth step: artificially aging the aluminum alloy forging after the quenching in the third step, the aging temperature is 175°C±5°C, and the aging time is 8h.

[0034] Table 1 is the forging hardness test after implementing Example 1, and the distribution of corresponding hardness test points is as follows Figure 6 shown. For ...

example 2

[0036] Example 2: This process is used to forge 2A14 aluminum alloy.

[0037] Step 1: Heat the 2A14 aluminum alloy billet bar to 500°C±5°C, select the holding time according to the shape and size of the billet, and the holding time range is 10-270min.

[0038] The second step: forging the aluminum alloy billet after the first step of heat preservation, the forging temperature is 380°C-480°C, and the deformation amount is controlled according to the required forging shape, and the deformation amount ranges from 10% to 85%.

[0039] The third step: Quenching the aluminum alloy forging formed in the second step, and controlling the transfer time of the aluminum alloy forging in the process from the second step to the third step within 10 seconds.

[0040] Step 4: Perform artificial aging treatment on the aluminum alloy forging after quenching in the third step. The aging temperature is 160°C±5°C. The aging time is selected according to the shape and size of the forging, and the a...

example 3

[0041] Example 3: Using this process to forge and form 7075 aluminum alloy.

[0042] Step 1: Heat the 7075 aluminum alloy billet bar to 475°C±5°C, select the holding time according to the shape and size of the billet, and the holding time range is 10-270min.

[0043]The second step: forging the aluminum alloy blank after the first step of heat preservation, the forging temperature is 360°C-450°C, and the deformation is controlled according to the shape of the forging required, and the deformation range is 10%-85%.

[0044] The third step: Quenching the aluminum alloy forging formed in the second step, and controlling the transfer time of the aluminum alloy forging in the process from the second step to the third step within 10 seconds.

[0045] The fourth step: artificially aging the aluminum alloy forging after the quenching in the third step, the aging temperature is 120°C±5°C, and the aging time is 24h.

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Abstract

The invention relates to a forging technology for automobile aluminum alloy chassis class parts. The forging technology comprises the following steps: 1), heating an aluminum alloy blank to a solid dissolving temperature and preserving heat so as to fully dissolve a strengthening phase; 2), carrying out forging molding on the aluminum alloy blank preserving heat; 3), carrying out quenching treatment on an aluminum alloy forged piece molded; and 4), carrying out aging treatment on the aluminum alloy forged piece quenched. The technology reduces production cycle and production cost and improves production efficiency under the condition of fully meeting product performance requirements.

Description

technical field [0001] The invention belongs to the field of material processing, and in particular relates to a forging process for automobile aluminum alloy chassis parts. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry, and is widely used in aviation, aerospace, machinery manufacturing, shipbuilding and chemical industries. Aluminum alloys can be forged on various forging equipment such as forging hammers, mechanical presses, presses, upsetting machines, hole reaming machines, etc., and can be free forged, die forged, upset forged, roll forged and hole reamed. When forging automotive aluminum alloy chassis parts, the aluminum alloy is usually heated to the forging temperature first, and then plastically deformed after the temperature is stable. After the plastic deformation is completed, solution treatment and aging treatment are performed. In order to improve the plasticity of the aluminum alloy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 华林赵宁胡志力兰箭
Owner WUHAN UNIV OF TECH
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