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6042 aluminum alloy and preparation method thereof

A technology of aluminum alloy and molten aluminum, applied in the field of metallurgy, can solve the problems of inability to meet customer gloss requirements, long time for smelting aluminum alloy, and compression of profit margins of enterprises, so as to shorten the melting time, shorten the melting time, and improve the appearance quality. Effect

Inactive Publication Date: 2016-08-10
HUAIAN HETONG AUTOMOTIVE COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent takes a long time to smelt aluminum alloy, and the production cost of aluminum alloy is relatively high, which reduces the profit margin of the enterprise
On the other hand, the glossiness of 6401 aluminum alloy products after oxidation is 550-650, which cannot meet the needs of customers for other glossiness

Method used

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  • 6042 aluminum alloy and preparation method thereof
  • 6042 aluminum alloy and preparation method thereof
  • 6042 aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] According to the composition and mass percentage of the 6042 aluminum alloy of Example 1 in Table 1, the weight ratio is (2-3): 1 99.99% high-purity refined aluminum ingot and Fe content of 0.05-0.15% Fe-containing Aluminum ingots are placed in an aluminum smelting furnace and heated to 730-740°C to melt into aluminum liquid, and then added aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy, chromium alloy and titanium alloy, Si, Cu, The addition amount of Mn, Cr, Zn, Ti element is 70-85% of target value. Then add refining agent to the molten alloy in the smelting furnace for refining, and carry out slag removal treatment.

[0038] After the slag removal treatment, add the remaining aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy and chromium alloy into the molten aluminum in the smelting furnace according to the set required content, and then...

Embodiment 2

[0043] According to the composition and mass percentage of the 6042 aluminum alloy of Example 2 in Table 1, the weight ratio is (2-3): 1 99.99% high-purity refined aluminum ingot and Fe content of 0.05-0.15% Fe-containing Aluminum ingots are placed in an aluminum smelting furnace and heated to 730-740°C to melt into aluminum liquid, and then added aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy, chromium alloy and titanium alloy, Si, Cu, The addition amount of Mn, Cr, Zn, Ti element is 70-85% of target value. Then add refining agent to the molten alloy in the smelting furnace for refining, and carry out slag removal treatment.

[0044] After the slag removal treatment, add the remaining aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy and chromium alloy into the molten aluminum in the smelting furnace according to the set required content, and then...

Embodiment 3

[0049] According to the composition and mass percentage of the 6042 aluminum alloy of Example 3 in Table 1, the weight ratio is (2-3): 1 99.99% high-purity refined aluminum ingot and Fe content of 0.05-0.15% Fe-containing Aluminum ingots are placed in an aluminum smelting furnace and heated to 730-740°C to melt into aluminum liquid, and then added aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy, chromium alloy and titanium alloy, Si, Cu, The addition amount of Mn, Cr, Zn, Ti element is 70-85% of target value. Then add refining agent to the molten alloy in the smelting furnace for refining, and carry out slag removal treatment.

[0050] After the slag removal treatment, add the remaining aluminum-silicon master alloy, aluminum-copper master alloy, aluminum-zinc alloy, manganese-aluminum master alloy and chromium alloy into the molten aluminum in the smelting furnace according to the set required content, and then...

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Abstract

The invention relates to a 6042 aluminum alloy and a preparation method thereof. The 6042 aluminum alloy is composed of the following components in mass percentage: Si: 0.38-0.48%, Cu: 0.06-0.12%, Mn: 0.01-0.05%, Mg: 0.50-0.60 %, Cr: 0.01‑0.03%, Zn: 0.03‑0.08%, Ti: 0.01‑0.03%, Fe≤0.08%, rare earth elements: 0.001‑0.002%, the balance is Al and unavoidable impurity elements, of which, a single The content of impurity elements is ≤0.02%, and the content of total impurity elements is ≤0.15%. The structure of the 6042 aluminum alloy of the present invention is better, and it can suppress or eliminate defects such as white lines, pitting and color difference when used in bright anodic oxidation production. The glossiness is 350-450, and it has better appearance quality, corrosion resistance and high temperature resistance. Crackability and other properties.

Description

technical field [0001] The invention relates to an aluminum alloy and a preparation method thereof, in particular to a 6042 aluminum alloy and a preparation method thereof, belonging to the field of metallurgy. Background technique [0002] The 6000 series aluminum alloy is currently the most widely used alloy. It is mainly composed of magnesium and silicon, and Mg 2 Si is the main strengthening phase, which has the characteristics of medium strength, good corrosion resistance, good welding performance, easy extrusion, good oxidation coloring performance, etc. It is suitable for automobile luggage racks, doors, windows, car bodies, heat sinks and various decorative strips , decorative parts and other automotive exterior parts. [0003] However, the surface hardness and wear resistance of aluminum alloys are poor. In order to meet the needs of use, surface treatment is required, and bright anodizing treatment is currently a widely used and successful surface treatment techno...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22F1/047B22D43/00
CPCC22C21/08B22D43/004C22C1/026C22C1/03C22F1/047
Inventor 张国义
Owner HUAIAN HETONG AUTOMOTIVE COMPONENTS CO LTD
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