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4XXX series aluminum alloy and preparation method thereof

A technology of aluminum alloy and raw materials, applied in the field of aluminum alloy, can solve the problems of low tensile strength, achieve the effects of increasing strength, reducing temperature loss, and optimizing casting conditions

Inactive Publication Date: 2021-04-27
ASIA PACIFIC LIGHT ALLOY NANTONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The 4XXX series aluminum alloys of the prior art have low tensile strength and cannot meet the needs of the prior art. Therefore, there is an urgent need for a 4XXX series aluminum alloy and a preparation method thereof to prepare an aluminum alloy with higher tensile strength

Method used

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  • 4XXX series aluminum alloy and preparation method thereof

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preparation example Construction

[0022]Please refer tofigure 1It shows the step of the step of the preparation method of the 4xxx aluminum alloy according to the embodiment of the present application. A 4xxx aluminum alloy was prepared according to the above-described raw material, and the preparation method of 4XXX aluminum alloy 1 includes the following steps 101 to 104, wherein:

[0023]Step 101, smelt the feedstock, and add a nucleation agent. In the melt furnace, the smelting process is performed, and the smelting furnace is performed, and the smelting temperature of the smelt furnace is 720-770 ° C, and the raw material is smelted to all melts, forming an aluminum liquid, and the melting temperature can be set to 720 ° C, 740 ° C or 760 ° C, but Not limited. Then, the nucleating agent is added to the melted raw material, resulting in a large number of dispersed artificially produced non-self-circulated (also known as amphora) to form a large amount of dispersed artificial manufactured non-dispersed in the raw ma...

Embodiment 1

[0031]1. The raw material is weighed according to the percentage of 4xxx aluminum alloy mass, and the mass percentage of the material is 12.2% Si, 4.2% Cu, 0.58% Mg, 0.005% Mn, 0.008% Ti, 0.0086% CR. , 0.121% of Fe, margin Al.

[0032]2, the raw material weighing is added to the smelting furnace, smelting at 720-770 ° C, to obtain an aluminum alloy melt, and adding a nucleating agent in an aluminum alloy melt;

[0033]3, for the flow tank, in addition to the air box, the filter box, the electric heating, the electric heating temperature is set to 850 ° C, and after bakeing to 740-780 ° C, the aluminum alloy melt is molded, casting The temperature is 750-760 ° C, the casting speed is 125-135 mm / min, the cooling water flow is 6500-7200 L / min, and the coins are obtained from the end of the aluminum alloy solid round ingot;

[0034]4, perform uniformization steps, where the heating temperature is 470-490 ° C, the holding time is 3.5 h, and naturally cooling after the incubation is completed;...

Embodiment 2

[0037]1. The raw material is weighed according to the percentage of 4xxx aluminum alloy mass, the mass percentage of the material is 11.8% Si, 4.5% Cu, 0.57% Mg, 0.0023% Mn, 0.004% Ti, 0.006% CR. , 0.135% of Fe, margin Al.

[0038]2, the raw material weighing is added to the smelting furnace, smelting at 720-770 ° C, to obtain an aluminum alloy melt, and adding a nucleating agent in an aluminum alloy melt;

[0039]3, for the flow tank, in addition to the air box, the filter box, the electric heating, the electric heating temperature is set to 850 ° C, and after bakeing to 740-780 ° C, the aluminum alloy melt is molded, casting The temperature is 750-760 ° C, the casting speed is 125-135 mm / min, the cooling water flow is 6500-7200 L / min, and the coins are obtained from the end of the aluminum alloy solid round ingot;

[0040]4, perform uniformization steps, where the heating temperature is 470-490 ° C, the holding time is 3.5 h, and naturally cooling after the incubation is completed;

[004...

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Abstract

The invention relates to a 4XXX series aluminum alloy and a preparation method thereof. The 4XXX series aluminum alloy comprises the following components in percentage by mass of 11.5%-12.5% of silicon, 4.0%-5.0% of copper, 0.52% to 0.6% of magnesium, less than or equal to 0.01% manganese, less than or equal to 0.02% of titanium, less than or equal to 0.02% chromium, less than or equal to 0.15% iron, and remaining aluminum. The preparation method of the 4XXX series aluminum alloy comprises the following steps of weighing raw materials; smelting the raw materials until the raw materials are completely molten, and adding a nucleating agent into the molten raw materials; standing the raw materials, and carrying out online degassing and two-stage filtration on the raw materials after standing; casting the raw materials by adopting a hot-top horizontal casting process to form a bar; homogenizing the bar, and cooling; and carrying out extrusion molding of the bar. By adding the nucleating agent and optimizing the components of the 4XXX series aluminum alloy, the capacity of the alloy for separating out a strengthening phase is improved, and therefore the strength of the product is improved.

Description

Technical field[0001]The present application relates to an aluminum alloy, in particular to a 4XXX-based aluminum alloy and a preparation method thereof.Background technique[0002]4XXX-based aluminum alloy is an aluminum alloy with silicon as a major alloy element. The alloy is due to high silicon, the melting point is low, and the melt is good, and it is easy to make up the final product, which is mainly used for Manufacture of aluminum alloy forgings.[0003]In the process of implementing the present application, the applicant finds that there is at least the following problems in the prior art:[0004]The prior art 4xxx-based aluminum alloy is low, and it is impossible to meet the needs of the prior art, so it is urgently needed to prepare an aluminum alloy having a higher tensile strength.Inventive content[0005]In order to solve the technical problem in the above prior art, the present application provides a 4XXX-based aluminum alloy and a preparation method thereof. The specific tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22F1/043
CPCC22C21/02C22C1/026C22F1/043
Inventor 吴桂兰李其荣浦俭英
Owner ASIA PACIFIC LIGHT ALLOY NANTONG TECH