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Ultra-fast solid solution treatment method for 6-series and 7-series aluminum alloys

A solution treatment and aluminum alloy technology, which is applied in the field of ultra-fast solution heat treatment of aluminum alloys, can solve the problems of unfavorable industrial production, high energy consumption, and long processing time

Inactive Publication Date: 2017-12-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an ultra-fast solution treatment method for 6-series and 7-series aluminum alloys to solve the problems that the existing 6-series and 7-series aluminum alloys have too long solution treatment time, high energy consumption, and unfavorable industrial production.

Method used

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  • Ultra-fast solid solution treatment method for 6-series and 7-series aluminum alloys
  • Ultra-fast solid solution treatment method for 6-series and 7-series aluminum alloys
  • Ultra-fast solid solution treatment method for 6-series and 7-series aluminum alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Include the following steps:

[0023] Step 1: Direct contact heat solution treatment:

[0024] Put the aluminum alloy sheet between the preheated upper heating body and the lower heating body. The preheating temperature of the upper heating body and the lower heating body is 470°C. The upper heating body is driven by the press to move downward together with the lower heating body. Compress the aluminum alloy sheet, the pressure is 15MPa, and the holding time is 20s to fully solidify;

[0025] Step 2: Sheet Transfer

[0026] Quickly transfer the sheet after heating and solution treatment to the forming quenching mold, and the transfer time is less than 5s;

[0027] Step 3: Forming and Quenching Treatment

[0028] The mold with a cooling device is used to form and quench the sheet after solid solution, wherein the forming time is 0.5s, the holding time is 4s, and the temperature of the parts out of the mold is lower than 50°C;

[0029] Step 4: Aging Treatment

[0030...

Embodiment 2

[0032] Include the following steps:

[0033] Step 1: Direct contact heat solution treatment:

[0034] Put the aluminum alloy sheet between the pre-heated upper heating body and the lower heating body. The preheating temperature of the upper heating body and the lower heating body is 500°C. The upper heating body moves down together with the lower heating body driven by the press. Compress the aluminum alloy sheet, the pressure is 33MPa, and the holding time is 40s to fully solidify;

[0035] Step 2: Sheet Transfer

[0036] Quickly transfer the sheet after heating and solution treatment to the forming quenching mold, and the transfer time is less than 5s;

[0037] Step 3: Forming and Quenching Treatment

[0038] The mold with a cooling device is used to form and quench the sheet after solid solution. The forming time is 1.8s, the holding time is 7s, and the temperature of the parts out of the mold is lower than 50°C;

[0039] Step 4: Aging Treatment

[0040] Put the parts ...

Embodiment 3

[0042] Include the following steps:

[0043] Step 1: Direct contact heat solution treatment:

[0044] Put the aluminum alloy sheet between the preheated upper heating body and the lower heating body. The preheating temperature of the upper heating body and the lower heating body is 530°C. The upper heating body is driven by the press to move downward together with the lower heating body. Compress the aluminum alloy sheet, the pressure is 50MPa, and the pressure holding time is 60s, so as to fully solidify;

[0045] Step 2: Sheet Transfer

[0046] Quickly transfer the sheet after heating and solution treatment to the forming quenching mold, and the transfer time is less than 5s;

[0047] Step 3: Forming and Quenching Treatment

[0048] The mold with a cooling device is used to form and quench the sheet after solid solution. The forming time is 3s, the holding time is 10s, and the temperature of the parts out of the mold is lower than 50°C;

[0049] Step 4: Aging Treatment ...

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Abstract

The invention relates to an ultra-fast solid solution treatment method for 6-series and 7-series aluminum alloys and belongs to the technical field of heat treatment of metal materials. The ultra-fast solid solution treatment method comprises the following steps: directly contacting, heating and carrying out solid solution treatment; putting an aluminum alloy sheet into a position between a preheated upper heating body and a preheated lower heating body, wherein the preheating temperature of the upper heating body and the lower heating body is 470 to 530 DEG C, and the upper heating body is driven by a press machine to move downward with the lower heating body to compress the aluminum alloy sheet, keeping the pressure at 15 to 50 MPa and the dwell time at 20 to 60s so as to perform the sufficient solid solution treatment; transferring the sheet, forming and carrying out quenching treatment and aging treatment. The ultra-fast solid solution treatment technological method for the 6-series and 7-series aluminum alloys, disclosed by the invention, has the advantages that the heating and solid solution time is short; in addition, produced aluminum alloy parts have high precision, and the strength of the produced aluminum alloy parts is greater than T6 state strength of the material.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of metal materials, and in particular relates to an ultra-fast solution heat treatment method for aluminum alloys. Background technique [0002] The lightweight of automobiles plays a very important role in energy saving and emission reduction. Tests have shown that under the same conditions, the fuel consumption per 100 kilometers will be reduced by 0.4-1L for every 100kg reduction in the weight of the car, and the fuel consumption will be reduced by 6%-8% for every 10% reduction in the weight of the car. Aluminum alloy materials have a series of advantages such as low density, high specific strength, good corrosion resistance and low cost, and are currently being used more and more in the production of automobile body parts. The 6-series aluminum alloy can be strengthened by heat treatment, with moderate strength, good corrosion resistance, easy painting and coloring, and good overall pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/05C22F1/053
CPCC22F1/002C22F1/05C22F1/053
Inventor 张志强孟松峰余剑豪赵勇李湘吉
Owner JILIN UNIV