Method for improving O-state bending performance of 5083 alloy

A performance and alloy technology, applied in the field of improving the bending performance of 5083 alloy O state, can solve the problem of reducing the bending capacity of 5083 aluminum alloy O state material, and achieve the effect of improving bending performance

Active Publication Date: 2021-07-27
河南明晟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of any of the above defects will reduce the bending ability of the 5083 aluminum alloy O-state material

Method used

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  • Method for improving O-state bending performance of 5083 alloy
  • Method for improving O-state bending performance of 5083 alloy
  • Method for improving O-state bending performance of 5083 alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for improving the O-state bending performance of 5083 alloy, characterized in that it comprises the following steps:

[0030] S1, prepare materials, prepare the following component raw materials according to weight percentage: Si≤0.15%, Fe≤0.15%, Cu≤0.05%, Mn=0.40%, Mg=4.3%, Zn≤0.05%, Cr=0.05% , Ti≤0.05%, other individual impurities <0.05%, total impurities <0.15%, and the rest is Al;

[0031] S2, smelting and refining, put the raw materials prepared in step S1 into the melting furnace for smelting, and then obtain molten aluminum after static refining, degassing, slag removal, and filtration. The refining temperature is 730°C, and the online purification treatment requires degassing The hydrogen content measured in the launder is ≤0.1mL / 100gAl, and the content of inclusions in the online launder is less than 0.04mm 2 / kg;

[0032] S3, ingot casting, casting the molten aluminum obtained in step S2 into an aluminum alloy ingot at a casting temperature of 710°C ...

Embodiment 2

[0039] A method for improving the O-state bending performance of 5083 alloy, characterized in that it comprises the following steps:

[0040] S1, prepare materials, prepare the following component raw materials according to weight percentages: Si≤0.15%, Fe≤0.15%, Cu≤0.05%, Mn=0.50%, Mg=4.1%, Zn≤0.05%, Cr=0.08% , Ti≤0.05%, other individual impurities <0.05%, total impurities <0.15%, and the rest is Al;

[0041] S2, smelting and refining, put the raw materials prepared in step S1 into the melting furnace for smelting, and then obtain molten aluminum after static refining, degassing, slag removal, and filtration. The refining temperature is 740°C, and the on-line purification treatment requires degassing The hydrogen content measured in the launder is ≤0.1mL / 100gAl, and the content of inclusions in the online launder is less than 0.04mm 2 / kg;

[0042] S3, ingot casting, casting the molten aluminum obtained in step S2 into an aluminum alloy ingot at a casting temperature of 720...

Embodiment 3

[0049] A method for improving the O-state bending performance of 5083 alloy, characterized in that it comprises the following steps:

[0050] S1, prepare materials, prepare the following component raw materials according to the weight percentage: Si≤0.15%, Fe≤0.15%, Cu≤0.05%, Mn=0.45%, Mg=4.2%, Zn≤0.05%, Cr=0.06% , Ti≤0.05%, other individual impurities <0.05%, total impurities <0.15%, and the rest is Al;

[0051] S2, smelting and refining, put the raw materials prepared in step S1 into the melting furnace for smelting, and then obtain molten aluminum after static refining, degassing, slag removal, and filtration. The refining temperature is 735°C, and the launder is controlled during the degassing process Hydrogen content ≤0.1mL / 100gAl, launder inclusion content 2 / kg;

[0052] S3, ingot casting, casting the molten aluminum obtained in step S2 into an aluminum alloy ingot at a casting temperature of 735°C and a casting speed of 55±3mm / min;

[0053] S4. Homogenizing heat trea...

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Abstract

The invention belongs to the technical field of aluminum alloy, and particularly discloses a method for improving the O-state bending performance of 5083 alloy. The method comprises the following steps of: adding prepared raw materials into a smelting furnace for smelting, and standing for refining, degassing, slagging-off and filtering to obtain molten aluminum, wherein the refining temperature is 730-740 DEG C; in the degassing process, controlling the hydrogen content measured by a launder to be less than or equal to 0.1 mL/100g Al, and controlling the inclusion content of melt in an online launder to be less than 0.04 mm < 2 >/kg; casting the molten aluminum into an aluminum alloy cast ingot at the casting temperature of 710-720 DEG C and the casting speed of 45-55 mm/min; carrying out homogenization heat treatment on the aluminum alloy cast ingot; after preheating, sequentially carrying out multi-pass hot rough rolling and single-pass hot finish rolling to obtain a hot-rolled blank with the thickness of 10.0-12.0 mm; carrying out cold rolling on the hot-rolled blank at the high reduction rate to obtain a cold-rolled coiled material with the thickness of 3.0-5.0mm; and carrying out high-temperature rapid annealing, transverse shearing, straightening and slitting on the cold-rolled coiled material to obtain an aluminum alloy plate. The minimum relative bending radius of 90-degree bending of the 5083 alloy O-state plate can reach 0.5 t, and the surface is uniform, smooth and fine after bending.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy production, in particular to a method for improving the bending performance of 5083 alloy in O state. Background technique [0002] 5083 aluminum alloy is a high-magnesium aluminum alloy, which has good strength, corrosion resistance, and machinability among non-heat-treatable alloys. It has a beautiful surface after anodizing treatment and good arc welding performance. It is widely used in marine applications such as ships, automobiles, and aircraft. Welding parts, subway light rail, pressure vessels that require strict fire protection, etc. [0003] In aluminum processing, the minimum relative bending radius is usually used to measure the bending capacity of the aluminum alloy sheet when bending. The smaller the minimum relative bending radius, the better the bending capacity of the material. When the material is bent, the outer layer is stretched and the inner layer is compressed on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/06C22F1/047B22D7/00B22D27/04
CPCC22C1/026C22C21/06C22F1/047B22D7/005B22D27/04
Inventor 宋喜波柴明科李克振
Owner 河南明晟新材料科技有限公司
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