Corrosion-resistant aluminum alloy profile

A technology for corrosion-resistant aluminum alloys and aluminum alloy profiles, which is applied in the field of metal material manufacturing to achieve excellent corrosion resistance and tensile strength, and shorten the production process and cycle.

Active Publication Date: 2015-10-07
浙江米皇新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a new environment-friendly and corrosion-resistant aluminum alloy profile production process. It is fully optimized from raw materials to process parameters. It is unexpectedly found that under the optimized parameters, excellent corrosion-resistant and high-strength aluminum can be produced with low energy consumption. Alloy profiles, which bring great benefits to production practice, such a process has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A production method of corrosion-resistant aluminum alloy profiles:

[0026] (1) Ingredients and melting:

[0027] Ingredients according to mass percentage: Cu 8%, Fe 3%, Mn 5%, Mg 2%, Zn 1.5%, Si 0.5%, Ni 0.1%, Ti 0.05%, the rest is Al, smelting at high temperature for 6 hours to obtain aluminum alloy melt;

[0028] (2) Horizontal continuous casting:

[0029] The obtained aluminum alloy solution is subjected to horizontal continuous casting and cleaned;

[0030] (3) Continuous extrusion:

[0031] The extrusion speed is 9r / min, the rounded corner of the die entrance is r=0.2mm, and the aluminum alloy profile is obtained;

[0032] (4) Secondary aging heat treatment:

[0033] Level 1: The temperature is 120°C, the time is 7 hours, and then the aluminum alloy profile is water-cooled or air-cooled to room temperature;

[0034] Level 2: The temperature is 220°C, the time is 80 minutes, and then the aluminum alloy profile is water-cooled or air-cooled to room temperatur...

Embodiment 2

[0036] A production method of corrosion-resistant aluminum alloy profiles:

[0037] (1) Ingredients and melting:

[0038] Ingredients according to mass percentage: Cu 3%, Fe 2%, Mn 5%, Mg 1%, Zn 1.7%, Si 0.3%, Ni 0.1%, Ti 0.05%, the rest is Al, smelting at high temperature for 8 hours to obtain aluminum alloy melt;

[0039] (2) Horizontal continuous casting:

[0040] The obtained aluminum alloy solution is subjected to horizontal continuous casting and cleaned;

[0041] (3) Continuous extrusion:

[0042] The extrusion speed is 6r / min, the rounded corner of the die entrance is r=0.4mm, and the aluminum alloy profile is obtained;

[0043] (4) Secondary aging heat treatment:

[0044] Level 1: The temperature is 100°C, the time is 10h, and then the aluminum alloy profile is water-cooled or air-cooled to room temperature;

[0045] Level 2: The temperature is 180°C, the time is 100 minutes, and then the aluminum alloy profile is water-cooled or air-cooled to room temperature. ...

Embodiment 3

[0047] A production method of corrosion-resistant aluminum alloy profiles:

[0048] (1) Ingredients and melting:

[0049] Ingredients according to mass percentage: Cu 3%, Fe 5%, Mn 6%, Mg 1.5%, Zn 1.1%, Si 0.4%, Ni 0.1%, Ti 0.05%, the rest is Al, smelting at high temperature for 7 hours to obtain aluminum alloy melt;

[0050] (2) Horizontal continuous casting:

[0051] The obtained aluminum alloy solution is subjected to horizontal continuous casting and cleaned;

[0052] (3) Continuous extrusion:

[0053] The extrusion speed is 8r / min, and the rounded corner of the die entrance is r=0.3mm to obtain aluminum alloy profiles;

[0054] (4) Secondary aging heat treatment:

[0055] Level 1: The temperature is 110°C, the time is 9 hours, and then the aluminum alloy profile is water-cooled or air-cooled to room temperature;

[0056] Level 2: The temperature is 188°C, the time is 88 minutes, and then the aluminum alloy profile is water-cooled or air-cooled to room temperature. ...

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Abstract

The invention discloses a production method of a corrosion-resistant aluminum alloy profile. The corrosion-resistant aluminum alloy profile comprises, by mass percent, 3%-8% of Cu, 2%-5% of Fe, 5%-9% of Mn, 1%-2% of Mg, 1%-2% of Zn, 0.3%-0.8% of Si, 0.1% of Ni, 0.05% of Ti and the balance Al. The materials are smelted for 6-8 hours at high temperature to obtain molten aluminum alloy; horizontal continuous casting is carried out on the obtained molten aluminum alloy and cleaning is conducted; the aluminum alloy profile is obtained through continuous extruding and forming; second-stage aging heat treatment is carried out on the obtained aluminum alloy profile, and a finished corrosion-resistant aluminum alloy profile product is obtained. The alloy production process is simplified and the alloy production period is shortened without homogenization and pre-heating treatment, and the energy-saving and environment-friendly production requirements of a short-process technology are completely met. Besides, the manufactured aluminum alloy profile has excellent corrosion resistance and tensile strength and can meet high-end requirements increasing day by day.

Description

technical field [0001] The invention belongs to the technical field of metal material manufacturing, and in particular relates to a corrosion-resistant aluminum alloy profile and a production process thereof. Background technique [0002] my country is already the world's largest producer, exporter and consumer of aluminum extrusions. At present, my country's aluminum extrusion industry has entered a new stage of scale and technological upgrading, and is in an important period of change and transformation. Now the aluminum alloy industry has been developing in the direction of producing environmentally friendly, low energy consumption, and excellent alloy properties. [0003] In the existing complex aluminum alloys, there are many alloying elements and many phases, even in an equilibrium state, it is a completely solid-solution alloy, and eutectics often appear. In order to improve its corrosion resistance, European and American countries have successively developed overag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/18C22F1/04C22F1/057
Inventor 陆新江吴金海李焰钟泉
Owner 浙江米皇新材股份有限公司
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