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A kind of high-hardness corrosion-resistant aluminum alloy profile and preparation method thereof

A corrosion-resistant aluminum alloy and high hardness technology, applied in the field of aluminum alloy, can solve the problems of being easily corroded and reducing the service life of aluminum alloy materials, so as to prevent cracking, reduce deformation resistance, increase dislocation density and recrystallization temperature Effect

Active Publication Date: 2018-08-17
安徽省煜灿新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surface of the aluminum alloy is exposed to the atmosphere, it will be covered with a thin layer of natural oxide film, but because the natural oxide film on the surface is easily corroded, the service life of the aluminum alloy material will be greatly reduced.
Therefore, the surface treatment of aluminum alloy profiles is usually carried out. The existing surface treatment processes of aluminum alloy profiles include anodic oxidation, electrolytic coloring, electrophoretic painting, powder spraying, fluorocarbon paint spraying, wire drawing, etc. These surface treatment processes all play a role. A certain corrosion resistance effect, but with the improvement of people's performance requirements for aluminum alloy profiles, the existing aluminum alloy profiles still need to be improved in terms of corrosion resistance and hardness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention comprises the following components by mass fraction: Cu: 1.2%, Si: 0.23%, Fe: 0.18%, Cr: 0.09%, Mg: 0.65%, Mn: 1.8 %, Zn: 5.8%, Ti: 0.12%, Li: 0.04%, Ni: 0.6%, Zr: 0.06%, Mo: 0.09%, W: 0.08%, V: 0.12%, and the rest is Al.

[0021] The preparation method of a high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention is prepared according to the following process:

[0022] S1. The primary aluminum alloy ingot is obtained after melting the raw materials, and the aluminum alloy ingot is obtained after homogenization treatment;

[0023] S2. Extruding the aluminum alloy ingot and then performing heat treatment to obtain the aluminum alloy matrix;

[0024] S3. Laser remelting the aluminum alloy substrate after grinding and cleaning, cooling to room temperature, and then heat treatment to obtain the high-hardness and corrosion-resistant aluminum alloy p...

Embodiment 2

[0026] A high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention comprises the following components by mass fraction: Cu: 1.9%, Si: 0.2%, Fe: 0.3%, Cr: 0.05%, Mg: 1%, Mn: 1.2 %, Zn: 6.5%, Ti: 0.08%, Li: 0.08%, Ni: 0.2%, Zr: 0.12%, Mo: 0.04%, W: 0.15%, V: 0.06%, and the rest is Al.

[0027] The preparation method of a high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention is prepared according to the following process:

[0028] S1. The primary aluminum alloy ingot is obtained after melting the raw materials, and the aluminum alloy ingot is obtained after homogenization treatment;

[0029] S2. Extruding the aluminum alloy ingot and then performing heat treatment to obtain the aluminum alloy matrix;

[0030] S3. After grinding and cleaning the aluminum alloy substrate, carry out laser remelting, cool to room temperature, and then obtain the high-hardness corrosion-resistant aluminum alloy profile through heat...

Embodiment 3

[0032]A high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention comprises the following components by mass fraction: Cu: 1.6%, Si: 0.215%, Fe: 0.24%, Cr: 0.07%, Mg: 0.8%, Mn: 1.5 %, Zn: 6.15%, Ti: 0.1%, Li: 0.06%, Ni: 0.42%, Zr: 0.09%, Mo: 0.065%, W: 0.12%, V: 0.09%, and the rest is Al.

[0033] The preparation method of a high-hardness corrosion-resistant aluminum alloy profile proposed by the present invention is prepared according to the following process:

[0034] S1. After smelting the raw materials to obtain primary aluminum alloy ingots, homogenize them at 410° C. for 3.5 hours, and then homogenize them at 450° C. for 2.5 hours to obtain aluminum alloy ingots;

[0035] S2. After extruding the aluminum alloy ingot, place it at 340°C for 1.5h, then cool it down to 280°C, hold it for 2.5h, then cool it down to 195°C, hold it for 6.7h, and cool it to room temperature to get the aluminum alloy matrix performing heat treatment to obtain an ...

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Abstract

The invention discloses a high-hardness corrosion resistant aluminum alloy profile and a preparation method thereof. The aluminum alloy profile comprises the following components in percentage by mass: 1.2-1.9% of Cu, 0.2-0.23% of Si, 0.18-0.3% of Fe, 0.05-0.09% of Cr, 0.65-1% of Mg, 1.2-1.8% of Mn, 5.8-6.5% of Zn, 0.08-0.12% of Ti, 0.04-0.08% of Li, 0.2-0.6% of Ni, 0.06-0.12% of Zr, 0.04-0.09% of Mo, 0.08-0.15% of W, 0.06-0.12% of V, and the balance of Al. The high-hardness corrosion resistant aluminum alloy profile has such excellent mechanical performances as strength, hardness and toughness, and has such advantages as good corrosion resistance and long service life.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-hardness, corrosion-resistant aluminum alloy profile and a preparation method thereof. Background technique [0002] Because aluminum alloy has many excellent physical and chemical properties, it is widely used in various fields of national economy. When the surface of the aluminum alloy is exposed to the atmosphere, it will be covered with a thin layer of natural oxide film, but because the natural oxide film on the surface is easily corroded, the service life of the aluminum alloy material is greatly reduced. Therefore, the surface treatment of aluminum alloy profiles is usually carried out. The existing surface treatment processes of aluminum alloy profiles include anodic oxidation, electrolytic coloring, electrophoretic painting, powder spraying, fluorocarbon paint spraying, wire drawing, etc. These surface treatment processes all play a role. Certain corrosio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22F1/053C22F3/00
CPCC22C21/10C22F1/053C22F3/00
Inventor 付建华
Owner 安徽省煜灿新型材料科技有限公司