New process avoiding coarse 6063 extrusion aluminum alloy crystals

A technology with coarse grains and aluminum alloys is applied in the new process field to avoid the coarse grains of 6063 extruded aluminum alloys, which can solve the problems of coarse grains, uneven product performance, deformation, etc. effect of heat preservation time

Inactive Publication Date: 2015-12-30
张亚荟
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AI Technical Summary

Problems solved by technology

However, in the production of 500mm100mm and 710mm8mm specifications, due to the many heating links, the product has uneven performance when it is delivered, and some products are also deformed after thermal processing.
After a low-magnification inspection of the cross-section of the product,

Method used

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  • New process avoiding coarse 6063 extrusion aluminum alloy crystals
  • New process avoiding coarse 6063 extrusion aluminum alloy crystals
  • New process avoiding coarse 6063 extrusion aluminum alloy crystals

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Embodiment Construction

[0007] Firstly, starting from the composition of the ingot, the chemical composition adjustment plan for the large-scale ingot of 6063 aluminum alloy was formulated, as shown in Table 1. Secondly, the homogenization process, extrusion process, quenching process, and aging process were adjusted. According to different specifications, the quenching heating and holding time are different. The specific extrusion process parameters are shown in Table 2.

[0008]

[0009]

[0010] Homogenization process of 6063 aluminum alloy ingot: set temperature at 550°C; hold time for 6h~8h; cooling method, strong wind cooling to 200°C and then water cooling. Extruded plate quenching process parameters: furnace heating chamber temperature 525, holding time according to plate thickness as shown in Table 3. The statute of limitations is 175, 10h. Table 4 shows the results of product detection performance and mechanical properties after adjusting the composition and process.

[0011]

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Abstract

The invention discloses 6063 extrusion aluminum alloy. The 6063 extrusion aluminum alloy is characterized by being prepared from, by mass, 0.6-0.7% of Si, smaller than 0.35% of Fe, 0.2-0.3% of Cu, smaller than 0.1% of Mn, 1.0-1.1% of Mg, 0.05-0.08% of Cr, smaller than 0.15% of Zn, smaller than 0.15% of Ti and the balance Al. A new process avoiding coarse 6063 extrusion aluminum alloy crystals is characterized in that in a 6063 aluminum alloy ingot homogenization process, the set temperature is 550 DEG C, and the heat preservation time is 6 h to 8 h; the cooling mode is that water cooling is conducted after the temperature is lowered to 200 DEG C through strong wind cooling, the extrusion temperature is 420-440 DEG C, and the extrusion speed is 1.5-2.0 m/min; according to the extrusion panel quenching process parameters, the furnace heating room temperature is 525 DEG C, the heat preservation time is determined according to the panel thickness, and the ageing process is 175 DEG C and 10 h.

Description

technical field [0001] The invention relates to a production process of 6063 aluminum alloy, in particular to a new process for avoiding coarse crystal grains of 6063 extruded aluminum alloy. Background technique [0002] 6063 aluminum alloy belongs to the A-lMg-Si series, which is characterized by medium strength, good plasticity, excellent weldability and corrosion resistance, especially no tendency of stress corrosion cracking. Aluminum alloy plates are often produced mainly by rolling. The development of large-scale extruded plates is based on the continuous expansion of the aluminum alloy application market. 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 advantages in further processing and application. However, whe...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22F1/047
Inventor 张亚荟
Owner 张亚荟
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