Production method for improving grain size of 6063 aluminum alloy center matrix

A production method and a technology of grain size, applied in the production field of improving the grain size of the central matrix of 6063 aluminum alloy, can solve problems such as uneven product performance, product deformation, and coarse grain size, so as to reduce the trend of grain growth, Avoid the growth of grains and reduce the effect of grain size

Inactive Publication Date: 2019-10-29
江苏南铝创佳金属股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for plates with larger specifications (for example, 310*250*10mm), on-line quenching after extrusion cannot achieve the ideal solution treatment effect. Due to many heating links, the product has uneven performance when it is delivered. Moreover, some products are deformed after thermal processing.
After a low-magnification inspection of the cross-section of the product, it was found that the low-magnification structure of the cross-section of the product showed fine grains in the peripheral part, while the grains in the central matrix part were coarse. Checking the mechanical properties of the corresponding parts found that its performance was generally low. Mottling phenomenon appeared in the final anodizing process, and this bad phenomenon seriously affected the product quality and increased the production cost. In order to reduce the defective rate of the client and increase the cost rate

Method used

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  • Production method for improving grain size of 6063 aluminum alloy center matrix

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A. Melting and casting: first put pure aluminum into the furnace to melt, and when heated to 700°C, add 1.5% aluminum titanium boron wire after melting, of which the titanium content is 5% and other trace elements.

[0029] B. Stirring: Mix the ingredients in the melt evenly by stirring, and the stirring time is 30 minutes.

[0030] C. Cast rod homogenization treatment: the cast rod is cast from the melt, and the temperature of the cast rod is kept at 575° C. for 8 hours by using the homogenization treatment process.

[0031] D. Extruded aluminum rod temperature: the temperature of the cast rod is controlled at 480°C before extrusion, and the outlet temperature of the cast rod is ensured at 520°C.

[0032] E. Mold design: by changing the R angle 1 at the feed inlet, the radius of R angle 1 is 8mm, the working zone 2 after R angle 1 is 3.5mm, and the depth 3 of the feed inlet of the mold is 25mm

[0033] F. Extrusion speed: In order to promote the metal to enter the coo...

Embodiment 2

[0036] A. Melting and casting: first put pure aluminum into the furnace to melt, and when heated to 720°C, add 1% aluminum titanium boron wire after melting, of which the titanium content is 5% and other trace elements.

[0037] B. Stirring: Mix the ingredients in the melt evenly by stirring, and the stirring time is 30 minutes.

[0038] C. Cast rod homogenization treatment: Cast rods through melt casting, use the homogenization treatment process to make the temperature of the casting rods 580° C. and keep it warm for 8 hours.

[0039] D. Extruded aluminum rod temperature: the temperature of the cast rod is controlled at 475°C before extrusion, and the outlet temperature of the cast rod is ensured at 530°C.

[0040] E. Mold design: by changing the R angle 1 at the feed inlet, the radius of R angle 1 is 8mm, the working zone 2 after R angle 1 is 3.5mm, and the depth 3 of the feed inlet of the mold is 25mm

[0041] F. Extrusion speed: In order to promote the metal to enter the ...

Embodiment 3

[0044] A. Melting and casting: first put pure aluminum into the furnace to melt, and when heated to 750°C, add 1.3% aluminum titanium boron wire after melting, of which the titanium content is 5% and other trace elements.

[0045] B. Stirring: Mix the ingredients in the melt evenly by stirring, and the stirring time is 40 minutes.

[0046] C. Cast rod homogenization treatment: the cast rod is cast from the melt, and the temperature of the cast rod is kept at 585° C. for 9 hours by using the homogenization treatment process.

[0047] D. Extruded aluminum rod temperature: the temperature of the cast rod is controlled at 470°C before extrusion, and the outlet temperature of the cast rod is kept at 540°C.

[0048] E. Mold design: By changing the R angle 1 at the feed inlet, the radius of R angle 1 is 8mm, the working zone 2 after R angle 1 is 3.5mm, and the depth 3 of the feed inlet of the mold is 25mm.

[0049] F. Extrusion speed: In order to promote the metal to enter the cooli...

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Abstract

The invention discloses a production method for improving the grain size of a 6063 aluminum alloy center matrix. The method comprises the following steps of casting, stirring, cast rod homogenizationtreatment, extrusion aluminum bar temperature, mold design, extrusion speed and cooling. Through multiple experiment detection of the grain size of the 6063 aluminum alloy, the structure is the one level, the grain size of the part of the center matrix is small, and after anodic oxidation, the piebald phenomenon cannot appear.

Description

technical field [0001] The invention relates to a production method for improving the grain size of a 6063 aluminum alloy center matrix, which belongs to the field of aluminum alloy grain size. Background technique [0002] 6063 aluminum alloy belongs to the Al-Mg-Si series, and its characteristics are: medium strength, good plasticity, excellent weldability and corrosion resistance, especially no tendency of stress corrosion cracking, aluminum alloy plates are often rolled Based on the production method, the application of large-scale extruded plates to the development of 3C products is based on the continuous expansion of the aluminum alloy application market, and in order to meet the needs of domestic and foreign customers, it is produced with the help of large-scale extrusion equipment. Compared with rolled plates, extruded plates generally have higher mechanical properties after undergoing the same heat treatment process, and the products have more performance advantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/05C22C1/02
CPCC22C1/026C22F1/05
Inventor 张金元
Owner 江苏南铝创佳金属股份有限公司
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