Production process of high-strength 6-series aluminum alloy cast rod

A production process and technology of aluminum alloy, applied in the field of preparation of aluminum alloy bars, can solve the problems of easy cracking, uneven distribution of aluminum alloy ingot structure, etc., to reduce surface cracks, better uniform structure and composition, improve mechanical the effect of strength

Inactive Publication Date: 2019-03-15
YINGKOU ZHONGWANG ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a high-strength 6-series aluminum alloy casting in order to solve the problem that bubbles are generated during the ingot casting process of the existing 6-series aluminum alloy, which makes the internal structure distribution of the aluminum alloy ingot uneven and cracks are easy to occur. Rod production process, through this production process can greatly reduce the generation of air bubbles in the ingot casting process, reduce the probability of ingot cracks, and improve the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A production process for high-strength 6-series aluminum alloy cast rods, comprising the following steps:

[0031] A. Determine the components of the 6082 aluminum alloy to be cast in proportion, feed materials in the order of high melting point first, then low melting point, high density first, and low density, and control the melting temperature to 710°C;

[0032] B. Stir the above melt, remove slag and other steps to remove large impurities in the molten aluminum, stir once every 10 minutes, and stir for 10 minutes each time;

[0033] C. The refining temperature is controlled at 730°C, the amount of refining agent required is: 0.7kg / t Al, and the composition of the refining agent is 23% NaCl, 20% KCl and 57% MgCl 2 . The refining agent must be added with a powder sprayer, or remove the packaging bag, sprinkle the powder evenly into the molten aluminum, then blow in argon gas and turn on the electromagnetic stirring vibrator, make the refining agent fully contact wit...

Embodiment 2

[0044] A production process for high-strength 6-series aluminum alloy cast rods, comprising the following steps:

[0045] A. Determine the components of the 6082 aluminum alloy to be cast in proportion, feed materials in the order of high melting point first, then low melting point, high density first, and low density, and control the melting temperature to 760°C;

[0046] B. Stir the above melt, remove slag and other steps to remove large impurities in the molten aluminum, stir once every 10 minutes, and stir for 10 minutes each time;

[0047] C. The refining temperature is controlled at 740°C, the dosage requirement of refining agent is: 1.0kg / t Al, and the composition of refining agent is 28% NaCl, 20% KCl and 52% MgCl 2 . The refining agent must be added with a powder sprayer, or remove the packaging bag, sprinkle the powder evenly into the molten aluminum, then blow in argon gas and turn on the electromagnetic stirring vibrator, make the refining agent fully contact with...

Embodiment 3

[0058] A production process for high-strength 6-series aluminum alloy cast rods, comprising the following steps:

[0059] A. Determine the components of the 6082 aluminum alloy to be cast in proportion, feed materials in the order of high melting point first, then low melting point, high density first, and low density, and control the melting temperature to 710°C;

[0060] B. Stir the above melt, remove slag and other steps to remove large impurities in the molten aluminum, stir once every 10 minutes, and stir for 10 minutes each time;

[0061] C. The refining temperature is controlled at 730°C to 740°C. The dosage requirement of refining agent is: 0.9kg / t Al, and the composition of refining agent is 25% NaCl, 25% KCl and 50% MgCl 2 . The refining agent must be added with a powder sprayer, or remove the packaging bag, sprinkle the powder evenly into the molten aluminum, then blow in argon gas and turn on the electromagnetic stirring vibrator, make the refining agent fully con...

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PUM

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Abstract

The invention belongs to the field of preparation of aluminum alloy rods, and relates to a production process of a high-strength 6-series aluminum alloy cast rod. The Al5CuTi2 refining agent preparedby the process disclosed by the invention is used for replacing the existing common Al-Ti-B 3D refining agent. The smelted molten aluminum is subjected smelting and refining to prepare the high-quality aluminum alloy cast ingot, the grain size of the aluminum alloy in the aluminum alloy cast ingot can be greatly reduced, the grain size of the aluminum alloy can be reduced to 20-80 microns, other eutectic crystal grains can be reduced to about 9 microns, the structure components in the aluminum alloy cast ingot are more uniform, the phenomenon of surface cracks of the aluminum ingot is reduced,the mechanical strength and the finished product rate of the aluminum alloy cast ingot are improved, and the rate of finished products can reach 99%.

Description

technical field [0001] The invention belongs to the field of preparation of aluminum alloy rods, and relates to a production process of high-strength 6-series aluminum alloy cast rods. Background technique [0002] During the smelting and casting process of aluminum and aluminum alloys, the dissolved hydrogen atoms in the melt are prone to form bubbles after being precipitated during casting solidification, resulting in defects in aluminum and aluminum alloy ingots or castings. At the same time, during the smelting process, the melt reacts with the air to form oxides, and being involved in the melt will reduce its purity. If it is not removed in the subsequent production, oxide inclusions will be formed in the ingot or casting, which will affect the performance of the product. . Therefore, in the production of aluminum and aluminum alloys, refining treatment must be carried out to reduce the hydrogen content and remove inclusions. During the casting and solidification of a...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/06
CPCC22C1/026C22C1/06
Inventor 郑伟李洪斌刘淇汶
Owner YINGKOU ZHONGWANG ALUMINUM CO LTD
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