5 series aluminium alloy plate production method

A technology of aluminum alloy plate and production method, which is applied in the field of metal materials, can solve the problems of lack of systematicness, use requirements, and inability to fully meet the hull materials, etc., and achieve internal structure improvement, good corrosion resistance and mechanical properties, and elimination of tissue and The effect of uneven composition

Inactive Publication Date: 2015-03-11
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0005] However, due to the gap caused by foreign technology secrecy and the lack of systematic research on domestic marine aluminum alloy products, the performance, variety specifications, and production levels of the 5xxx series marine aluminum alloys manufactured in China cannot fully meet

Method used

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  • 5 series aluminium alloy plate production method
  • 5 series aluminium alloy plate production method
  • 5 series aluminium alloy plate production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1.1 The 5083 aluminum alloy ingot with a magnesium element mass fraction of 4.1% is subjected to homogenization heat treatment at a soaking temperature of 460°C, and then starts cooling after 15 hours. After cooling to 280°C, the homogenized heat-treated aluminum alloy is obtained. alloy ingot.

[0036] see figure 1 and figure 2 , figure 1 It is a metallographic photograph of an aluminum alloy ingot in Example 1 of the present invention; figure 2 It is the metallographic photograph of the aluminum alloy ingot after the homogenization heat treatment in Example 1 of the present invention, by figure 1 and figure 2 It can be seen that the aluminum alloy ingot after the homogenization heat treatment of the present invention, the area percentage of the second phase after the homogenization treatment is significantly reduced, the homogenization heat treatment process controls the second phase better, and no intergranular loose defects are seen. In the high-magnificatio...

Embodiment 2

[0042] 1.1 The 5083 aluminum alloy ingot with a magnesium element mass fraction of 4.4% is subjected to homogenization heat treatment at a soaking temperature of 510°C, and then starts cooling after 17 hours. After cooling to 300°C, the homogenized heat-treated aluminum alloy is obtained. alloy ingot.

[0043] 1.2 Heat the homogenized aluminum alloy ingot obtained in 1.1 to 460° C. to obtain a heated aluminum alloy ingot.

[0044] 1.3 The heated aluminum alloy ingot obtained in 1.2 is hot-rolled at a temperature of 300° C. with 60% deformation reserved by a large deformation rolling process to obtain an intermediate aluminum alloy plate.

[0045] 1.4 The intermediate aluminum alloy plate obtained in 1.3 is subjected to a second hot rolling at 270° C. to obtain an aluminum alloy plate with a thickness of 16.0 mm.

[0046] According to GB / T22641-2008, the aluminum alloy plate obtained in 1.4 is tested, and the test results are shown in Table 1. Table 1 shows the performance par...

Embodiment 3

[0048] 1.1 The 5083 aluminum alloy ingot with a magnesium element mass fraction of 4.9% is subjected to homogenization heat treatment at a soaking temperature of 560°C, and then starts to cool after 20 hours. After cooling to 300°C, the homogenized heat-treated aluminum alloy is obtained. alloy ingot.

[0049] 1.2 Heat the homogenized aluminum alloy ingot obtained in 1.1 to 470° C. to obtain a heated aluminum alloy ingot.

[0050] 1.3 The heated aluminum alloy ingot obtained in 1.2 is hot-rolled at a temperature of 330° C. with 70% deformation reserved by a large deformation rolling process to obtain an intermediate aluminum alloy plate.

[0051] 1.4 The intermediate aluminum alloy plate obtained in 1.3 is subjected to a second hot rolling at 280° C. to obtain an aluminum alloy plate with a thickness of 20.0 mm.

[0052] According to GB / T22641-2008, the aluminum alloy plate obtained in 1.4 is tested, and the test results are shown in Table 1. Table 1 shows the performance par...

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Abstract

The invention provides an aluminium alloy plate production method which comprises the following steps: at first, performing homogenization heat treatment on an aluminium alloy ingot blank, and cooling to obtain a homogenization heat treatment aluminium alloy ingot, wherein the mass fraction of magnesium on the aluminium alloy ingot is 4.0%-4.9%; then heating the aluminium alloy ingot subjected to homogenization heat treatment, performing primary reserved deformation hot rolling to obtain an intermediate aluminium alloy plate; finally, performing secondary hot rolling on the intermediate aluminium alloy plate to obtain an aluminium alloy plate. The aluminium alloy plate production method is especially suitable for producing 5 series marine aluminium alloy plates, and particularly aims at the H116 state of a 5083 aluminium alloy in the 5 series aluminium alloy plate. The aluminium alloy plate produced by the aluminium alloy plate production method has high corrosion resistance and mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a production method of a 5-series aluminum alloy plate. Background technique [0002] Aluminum alloy is an alloy based on aluminum, the main alloying elements are copper, silicon, magnesium, zinc and manganese. Aluminum alloy is the most widely used non-ferrous metal structural material in industry. At present, aluminum alloy sheet is the main type of aluminum alloy profile. Its production method is through aluminum alloy or direct cold casting into ingots, or continuous casting into thick strips, and then hot rolling into a predetermined thickness, and then with a separate After the strip is cold-rolled to the final thickness, the heat treatment process is carried out to improve the mechanical properties and corrosion resistance of the aluminum alloy plate, improve its processing performance, and obtain dimensional stability. [0003] The heat treatment pro...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 王军李伟伍彬
Owner SOUTHWEST ALUMINUM GRP
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