6061 aluminum alloy and processing method thereof

A processing method and technology of aluminum alloy, applied in the field of metal materials, can solve the problems of reducing production efficiency, extrusion speed affecting production capacity, etc., achieving the effects of good quality, easy operation, and reduction of extrusion cracks

Inactive Publication Date: 2018-11-06
SHANDONG NANSHAN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the cracking phenomenon of this type of aluminum alloy, the usual practice is to reduce the extrusion speed to improve the ext

Method used

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  • 6061 aluminum alloy and processing method thereof
  • 6061 aluminum alloy and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Put aluminum ingots into the melting furnace, and add aluminum silicon, aluminum manganese, aluminum chromium, aluminum rare earth master alloy, and then add magnesium ingots, aluminum titanium alloy and pure copper, and melt at 740°C. The above raw materials contain 0.65wt% of Si, 0.25wt% of Fe, 0.18wt% of Cu, 0.1wt% of Mn, 0.85wt% of Mg, 0.15wt% of Cr, 0.08wt% of Ti and 0.15wt% of rare earth Cerium tin, the balance is Al.

[0044] Use argon gas to blow chlorine salt into the molten aluminum formed by smelting for refining in the furnace. The amount of refining agent used is 1.8kg / t, and the refining time in the furnace is 15 minutes.

[0045] Two-stage ceramic filters are used to filter the refining melt, and the meshes of the filter plates are 35 mesh and 55 mesh respectively.

[0046] Cast the filtered ready-to-use liquid into aluminum rods, then keep the temperature at 545°C for 12 hours, then raise the temperature to 565°C and keep it for 7 hours to obtain the ca...

Embodiment 2

[0049] Put aluminum ingots into the melting furnace, and add aluminum silicon, aluminum manganese, aluminum chromium, aluminum rare earth master alloy, and then add magnesium ingots, aluminum titanium alloy and pure copper, and melt at 760°C. The above raw materials contain 0.7wt% of Si, 0.35wt% of Fe, 0.23wt% of Cu, 0.15wt% of Mn, 0.9wt% of Mg, 0.25wt% of Cr, 0.12wt% of Ti and 0.2wt% of rare earth Cerium tin, the balance is Al.

[0050] Use argon gas to blow nitrate into the molten aluminum formed by smelting for refining in the furnace. The amount of refining agent used is 2.2kg / t, and the refining time in the furnace is 20 minutes.

[0051] Two-stage ceramic filters are used to filter the refining melt, and the mesh numbers of the filter plates are 45 mesh and 65 mesh respectively.

[0052] Cast the filtered ready-to-use liquid into aluminum rods, then keep the temperature at 550°C for 8 hours, then raise the temperature to 570°C and keep it for 5 hours to obtain the casti...

Embodiment 3

[0055] Put aluminum ingots into the melting furnace, and add aluminum silicon, aluminum manganese, aluminum chromium, aluminum rare earth master alloy, and then add magnesium ingots, aluminum titanium alloy and pure copper, and melt at 745°C. The above raw materials contain 0.67wt% of Si, 0.32wt% of Fe, 0.2wt% of Cu, 0.14wt% of Mn, 0.86wt% of Mg, 0.22wt% of Cr, 0.09wt% of Ti and 0.18wt% of rare earth Cerium tin, the balance is Al.

[0056] Chlorine gas is used to spray the mixture of chlorine salt and nitrate into the molten aluminum formed by smelting for refining in the furnace. The amount of refining agent used is 1.9kg / t, and the refining time in the furnace is 17 minutes.

[0057] Two-stage ceramic filters are used to filter the refining melt, and the mesh numbers of the filter plates are 35 mesh and 65 mesh respectively.

[0058] Cast the filtered ready-to-use liquid into aluminum rods, then keep the temperature at 545°C for 8 hours, then raise the temperature to 570°C ...

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Abstract

The invention relates to a 6061 aluminum alloy and a processing method thereof, and belongs to the field of metal materials. The processing method comprises the following steps of smelting and refining raw materials of the 6061 aluminum alloy, casting, homogenizing and extruding. The 6061 aluminum alloy is prepared from the raw materials in percentage by weight 0.65 to 0.7 percent of Si, 0.25 to 0.35 percent of Fe, 0.18 to 0.23 percent of Cu, 0.1 to 0.15 percent of Mn, 0.85 to 0.9 percent of Mg, 0.15 to 0.25 percent of Cr, 0.08 to 0.12 percent of Ti, 0.15 to 0.2 percent of rare earth cerium tin, and the balance Al. The processing method is simple and easy to operate, and extrusion cracks of the 6061 aluminum alloy can be effectively reduced. The obtained 6061 aluminum alloy is good in quality and cannot produce cracks at the extrusion speed of 6m/min.

Description

technical field [0001] The invention relates to the field of metal materials, and in particular to a 6061 aluminum alloy and a processing method thereof. Background technique [0002] 6061 aluminum alloy has the advantages of medium strength, good corrosion resistance, excellent formability, weldability, and low cost, and is widely used in aerospace, automobile, construction and other fields. [0003] However, 6061 aluminum alloy is easy to crack when extruded, especially for hollow profiles, extrusion cracks are prone to appear on the inner wall of the profile. [0004] In order to reduce the cracking phenomenon of this type of aluminum alloy, the common practice is to improve the extrusion cracking phenomenon of 6061 aluminum alloy by reducing the extrusion speed, but reducing the extrusion speed affects the production capacity and reduces the production efficiency. Contents of the invention [0005] The object of the present invention is to provide a processing method ...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047C22C1/06C22C1/03
Inventor 程仁策张涵源程仁寨张洪辉肖栋赵海滨郑卓阳张启东隋信增赵巍史春丽曲信磊李铸铁姜林
Owner SHANDONG NANSHAN ALUMINUM
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