High-resistance electrophoretic aluminum profile being resistant to cracking caused by bending and preparation method of aluminum profile

An aluminum profile and bending-resistant technology, applied in the field of aluminum alloy materials, can solve the problems of poor resistance to bending cracking, the qualified rate of finished products needs to be further improved, and cracks are easy to occur, so as to improve plasticity and strength, uniform chemical composition distribution, and cracking. The effect of reducing the phenomenon of

Inactive Publication Date: 2019-03-29
ANHUI XIN FA ALUMINUM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the 6063 aluminum profile is prone to cracks when it is actually bent at a large angle, and its resistance to bending cracking is poor, and the qualified rate of finished products needs to be further improved

Method used

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  • High-resistance electrophoretic aluminum profile being resistant to cracking caused by bending and preparation method of aluminum profile

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Effect test

Embodiment 1

[0021] The invention proposes an electrophoretic aluminum profile with high resistance to bending and cracking. The base material of the aluminum profile includes, by weight percentage: 0.47% Si, 0.68% Mg, 0.25% Fe, 0.12% Mo, 0.30% Mn, Cr 0.05%, Cu0.03%, Zn 0.10%, the balance is Al and unavoidable impurities, single impurity ≤ 0.05%, total impurity 0.15%.

[0022] The present invention also proposes a method for preparing the above-mentioned electrophoretic aluminum profiles with high resistance to bending and cracking, which includes the following steps:

[0023] S1. Melting: batching is carried out according to the composition of the base material of the aluminum profile, smelting, the melting temperature is 745-755°C, refining and slag casting, and casting to obtain blanks;

[0024] S2. Homogenization treatment: heat the blank at 550°C for 6 hours for homogenization treatment, and air-cool;

[0025] S3. Primary extrusion: heat the homogenized billet to 440° C., extrude it ...

Embodiment 2

[0031] An electrophoretic aluminum profile with high resistance to bending and cracking proposed by the present invention, the base material of the aluminum profile includes by weight percentage: Si 0.49%, Mg 0.78%, Fe 0.33%, Mo 0.18%, Mn 0.22%, Cr 0.03%, Cu0.05%, Zn 0.07%, the balance is Al and unavoidable impurities, single impurity ≤ 0.05%, total impurity 0.12%.

[0032] The present invention also proposes a method for preparing the above-mentioned electrophoretic aluminum profiles with high resistance to bending and cracking, which includes the following steps:

[0033] S1. Smelting: batching is carried out according to the composition of the base material of the aluminum profile, and the melting temperature is 750-760°C. Refining and slag casting are carried out to obtain blanks;

[0034] S2. Homogenization treatment: heat the blank at 560°C for 8 hours for homogenization treatment, and air-cool;

[0035] S3. One-time extrusion: heat the homogenized billet to 450° C., ex...

Embodiment 3

[0041] The invention proposes an electrophoretic aluminum profile with high resistance to bending and cracking. The base material of the aluminum profile includes, by weight percentage: 0.55% Si, 0.78% Mg, 0.27% Fe, 0.15% Mo, 0.25% Mn, Cr 0.04%, Cu0.03%, Zn 0.05%, the balance is Al and unavoidable impurities, single impurity ≤ 0.04%, total impurity 0.10%.

[0042] The present invention also proposes a method for preparing the above-mentioned electrophoretic aluminum profiles with high resistance to bending and cracking, which includes the following steps:

[0043] S1. Smelting: batching is carried out according to the composition of the base material of the aluminum profile, smelting, the melting temperature is 745-750°C, refining and slag casting, and casting to obtain blanks;

[0044] S2. Homogenization treatment: heat the blank at 550°C for 6.5 hours for homogenization treatment, and air-cool;

[0045]S3. Primary extrusion: heat the homogenized billet to 440°C, extrude it ...

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Abstract

The invention discloses a high-resistance electrophoretic aluminum profile being resistant to cracking caused by bending and a preparation method of the aluminum profile, and relates to the technicalfield of aluminum alloy materials. A substrate material of the aluminum profile comprises the following elements in percentage by weight: 0.46-0.55% of Si, 0.68-0.78% of Mg, 0.25-0.33% of Fe, 0.12-0.18% of Mo, 0.22-0.30% of Mn, no more than 0.05% of Cr, no more than 0 .05% of Cu, no more than 0.10% of Zn, and the balance Al and inevitable impurities, wherein the content of a single impurity is lower than or equal to 0.05%, the total content of the impurities is lower than or equal to 0.15%, and the ratio of Mg to Si in the substrate material is higher than or equal to 1.43 and lower than or equal to 1.60. The preparation method comprises the following steps: smelting, homogenization treatment, primary extrusion, secondary extrusion, aging treatment, anodic oxidation treatment and electrophoretic painting. Through the interaction among all the alloying elements, the aluminum profile disclosed by the invention is high in toughness and plasticity; during the preparation process, crystal grains become finer and more uniform through two extrusion forming operations, the strengthening effect is good, both the mechanical properties and the processing properties of such an alloy are obviously improved, and the possibility of cracking and other phenomena during the bending deformation processing process is low; and accordingly, the aluminum profile is resistant to cracking caused by bending and high in resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to an electrophoretic aluminum profile with high resistance to bending and cracking and a preparation method thereof. Background technique [0002] 6063 aluminum alloy is an Al-Mg-Si series heat-treatable and strengthened deformed aluminum alloy. It has high strength, good plasticity and good corrosion resistance, as well as anodic oxidation coloring and low price. It is widely used in doors, windows and containers. Frames, decorative parts, and some components of cars, trains, and ships. In particular, the aluminum profile is subjected to electrophoretic coating after anodic oxidation and electrolytic coloring. It has double-layer protection and has the characteristics of high transparency, high metal texture, high corrosion resistance and high weather resistance, and has a large demand in the construction market. However, the 6063 aluminum profile is prone to cra...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047C22C1/02C25D11/04C25D13/04
CPCC22C1/026C22C21/08C22F1/047C25D11/04C25D13/04
Inventor 唐开健李杰王超李亨
Owner ANHUI XIN FA ALUMINUM PROD
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