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Heat treatment process for machining aluminum alloy extruded profile

A technology for extruding profiles and aluminum alloys, which is applied in the field of aluminum alloy processing to achieve improved corrosion resistance, stress relief, and good solid solution effects.

Active Publication Date: 2020-11-17
苏州意友金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, my country's aluminum alloy hot deformation extrusion process has gradually approached maturity, but there is still a big gap compared with foreign developed countries in terms of the quality of extruded products or the efficiency and standardization of extrusion production.

Method used

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  • Heat treatment process for machining aluminum alloy extruded profile

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A processing and heat treatment process for aluminum alloy extruded profiles, comprising the following steps:

[0024] (1) Homogenize the heat treatment of 6063 aluminum alloy ingots, specifically: heat preservation at 535°C for 12 hours, and then air-cool to room temperature; Heat treatment, so that the temperature of the aluminum alloy ingot is 450°C, the temperature of the extrusion die is 460°C, and the temperature of the extrusion cylinder is 430°C; and then the extrusion treatment is performed to obtain a 6063 aluminum alloy extrusion profile;

[0025] Among them, the 6063 aluminum alloy ingot is composed of the following components by weight percentage: Mg: 0.49%, Si: 0.38%, Fe≤0.18%, Zn≤0.02%, Mn≤0.03%, Ti≤0.05%, and the balance is Al and not Avoid impurities.

[0026] (2) Quenching the 6063 aluminum alloy extruded profile obtained in step (1), specifically: first heating up to 460°C at a rate of 30°C / 10min, keeping it warm for 4 hours, and then cooling to room...

Embodiment 2

[0029] A processing and heat treatment process for aluminum alloy extruded profiles, comprising the following steps:

[0030] (1) Homogenize the heat treatment of 6063 aluminum alloy ingots, specifically: heat preservation at 535°C for 12 hours, and then air-cool to room temperature; Heat treatment, so that the temperature of the aluminum alloy ingot is 450°C, the temperature of the extrusion die is 460°C, and the temperature of the extrusion cylinder is 430°C; and then the extrusion treatment is performed to obtain a 6063 aluminum alloy extrusion profile;

[0031] Among them, the 6063 aluminum alloy ingot is composed of the following components by weight percentage: Mg: 0.49%, Si: 0.38%, Fe≤0.18%, Zn≤0.02%, Mn≤0.03%, Ti≤0.05%, and the balance is Al and not Avoid impurities.

[0032] (2) Quenching the 6063 aluminum alloy extruded profiles obtained in step (1), specifically: first heating up to 455°C at a rate of 30°C / 10min, keeping it warm for 4h, and then cooling to room tem...

Embodiment 3

[0035] A processing and heat treatment process for aluminum alloy extruded profiles, comprising the following steps:

[0036](1) Homogenize the heat treatment of 6063 aluminum alloy ingots, specifically: heat preservation at 535°C for 12 hours, and then air-cool to room temperature; Heat treatment, so that the temperature of the aluminum alloy ingot is 450°C, the temperature of the extrusion die is 450°C, and the temperature of the extrusion cylinder is 425°C; and then the extrusion treatment is performed to obtain a 6063 aluminum alloy extrusion profile;

[0037] Among them, the 6063 aluminum alloy ingot is composed of the following components by weight percentage: Mg: 0.51%, Si: 0.38%, Fe≤0.18%, Zn≤0.02%, Mn≤0.03%, Ti≤0.05%, and the balance is Al and not Avoid impurities.

[0038] (2) Quenching the 6063 aluminum alloy extruded profiles obtained in step (1), specifically: first heating up to 460°C at a rate of 30°C / 10min, keeping it warm for 3.5h, and then cooling to room te...

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Abstract

The invention provides a heat treatment process for machining an aluminum alloy extruded profile. The heat treatment process comprises the following steps of (1), performing homogenization heat treatment to a 6063 aluminum alloy ingot; performing heat treatment to and extruding the aluminum alloy ingot, an extrusion die and an extrusion container of an extruder; (2), performing quenching treatmentand tempering treatment to the obtained 6063 aluminum alloy extruded profile; (3), performing five-stage aging heat treatment to the aluminum alloy extruded profile, wherein the first-stage aging heat treatment is performed at 425 DEG C-450 DEG C for 2-3 h, and water cooling is adopted; the second-stage aging heat treatment is performed at 320 DEG C-340 DEG C for 4-6 h, and air cooling is adopted; the third-stage aging heat treatment is performed at 245 DEG C-265 DEG C for 5-8 h, and air cooling is adopted; the fourth-stage aging heat treatment is performed at 180 DEG C-215 DEG C for 5-8 hours, and furnace cooling is adopted; and the fifth-stage aging heat treatment is performed at 125 DEG C-135 DEG C for 5-8 hours, and furnace cooling is adopted; The 6063 aluminum alloy extruded profilemachined with the heat treatment process is high in strength, hardness and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to a heat treatment process for aluminum alloy extruded profiles. Background technique [0002] With the continuous deepening of human understanding of the properties of aluminum such as lightweight, corrosion resistance, easy formability, and low-temperature performance stability, as well as the continuous improvement of aluminum processing and welding technology, many aluminum products with complex sections have been extruded. Pressing aluminum profiles to simplify the manufacturing process, reduce processing and maintenance costs, and because aluminum alloys can maintain good performance at low temperatures, and aluminum does not chemically react with oil, natural gas and other chemical liquids, therefore, in many aluminum products In the field of application, the cost-effective advantage of using aluminum has been more and more widely recognized by the relevant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047C22C21/08
CPCC22F1/047C22F1/002C22C21/08
Inventor 王淼王云
Owner 苏州意友金属材料有限公司
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