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A heat treatment method for thin-walled aluminum alloy parts

A technology of aluminum alloy parts and heat treatment method, applied in the field of heat treatment, can solve problems such as stress deformation, and achieve the effects of solving stress deformation, improving qualification rate and stabilizing processing size

Active Publication Date: 2018-09-28
宁波杰克达五金制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the defects in the prior art, the object of the present invention is to provide a heat treatment method for thin-walled aluminum alloy parts. Ensure that the dimensional tolerance and geometric tolerance of the parts meet the technical requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A heat treatment method for a thin-walled aluminum alloy part provided in this embodiment, the heat treatment method for the thin-walled aluminum alloy part includes the following steps:

[0022] (1) Perform high-temperature heat treatment on thin-walled aluminum alloy parts before processing. The heat treatment temperature is 460-470 ° C, and the heat treatment time is 80-90 minutes;

[0023] (2) Put the thin-walled aluminum alloy parts into a vacuum brazing furnace for 1-2 hours after heat treatment, and perform the first vacuum brazing;

[0024] (3) Put the vacuum-brazed thin-walled aluminum alloy parts into an air furnace, heat to 800-900°C, keep warm for 5 hours, and air-cool;

[0025] (4) Carry out vacuum brazing for the second time, and put the thin-walled aluminum alloy parts processed in step (3) into a vacuum brazing furnace for 1-2h;

[0026] (5) The thin-walled aluminum alloy parts after the second vacuum brazing are subjected to standard aging heat treatme...

Embodiment 2

[0033] A heat treatment method for a thin-walled aluminum alloy part provided in this embodiment, the heat treatment method for the thin-walled aluminum alloy part includes the following steps:

[0034] (1) Perform high-temperature heat treatment on thin-walled aluminum alloy parts before processing. The heat treatment temperature is 460-470 ° C, and the heat treatment time is 80-90 minutes;

[0035] (2) Put the thin-walled aluminum alloy parts into a vacuum brazing furnace for 1-2 hours after heat treatment, and perform the first vacuum brazing;

[0036] (3) Put the vacuum-brazed thin-walled aluminum alloy parts into an air furnace, heat to 800-900°C, keep warm for 5 hours, and air-cool;

[0037] (4) Carry out vacuum brazing for the second time, and put the thin-walled aluminum alloy parts processed in step (3) into a vacuum brazing furnace for 1-2h;

[0038] (5) The thin-walled aluminum alloy parts after the second vacuum brazing are subjected to standard aging heat treatme...

Embodiment 3

[0045] A heat treatment method for a thin-walled aluminum alloy part provided in this embodiment, the heat treatment method for the thin-walled aluminum alloy part includes the following steps:

[0046] (1) Perform high-temperature heat treatment on thin-walled aluminum alloy parts before processing. The heat treatment temperature is 460-470 ° C, and the heat treatment time is 80-90 minutes;

[0047] (2) Put the thin-walled aluminum alloy parts into a vacuum brazing furnace for 1-2 hours after heat treatment, and perform the first vacuum brazing;

[0048] (3) Put the vacuum-brazed thin-walled aluminum alloy parts into an air furnace, heat to 800-900°C, keep warm for 5 hours, and air-cool;

[0049] (4) Carry out vacuum brazing for the second time, and put the thin-walled aluminum alloy parts processed in step (3) into a vacuum brazing furnace for 1-2h;

[0050] (5) The thin-walled aluminum alloy parts after the second vacuum brazing are subjected to standard aging heat treatme...

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Abstract

The invention belongs to the technical field of heat treatment, and provides a heat treatment method of thin-wall aluminum alloy parts. The method comprises the steps of high temperature heat treatment, vacuum brazing, heat treatment, second vacuum brazing and standard aging heat treatment, and the stress deformation problem of the thin-wall aluminum alloy parts in the cutting and machining process can be solved; not only the machining dimensions are stabilized, but also the dimensional tolerance and geometric tolerance of the parts are ensured to meet the technical requirements; and the qualification rate of the thin-wall aluminum alloy parts is improved.

Description

technical field [0001] The invention belongs to the technical field of heat treatment, and in particular relates to a heat treatment method for thin-walled aluminum alloy parts. Background technique [0002] In machining, the processing of thin-walled aluminum alloy parts is more common. However, there are many difficulties in the processing of thin-walled aluminum alloy parts. The main manifestations are: the structure is prone to fission under high temperature, and under high temperature and high pressure, it is easy to produce sticking phenomenon during cutting, forming built-up edge; easy to deform during cutting, Affects the dimensional tolerance and geometric tolerance of the part; the residual stress after cutting is large, resulting in the out-of-tolerance of the size and shape, and the part is scrapped; the dimensional stability is poor, and the residual stress retained by the material will be released under the change of the ambient temperature of the part, resulti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04C21D9/00C23C8/00B23K1/008
CPCB23K1/008C21D9/0068C22F1/04C23C8/00
Inventor 王虎
Owner 宁波杰克达五金制造有限公司
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