Method for manufacturing large-sized 5083 aluminum alloy slab ingot

A manufacturing method and large-scale technology, applied in the field of aluminum alloy manufacturing, can solve the problems of low yield and low production efficiency, and achieve the effects of improving yield and reducing production costs.

Inactive Publication Date: 2015-11-04
GUANGXI LIUZHOU YINHAI ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for manufacturing large-scale slabs of 5083 aluminum alloys. This method can solve the problems of low production efficiency and low yield of aluminum plates with a width greater than 2400 mm in the production of existing aluminum alloy slabs. This large-scale wide-width slab was developed to increase the yield of finished wide-slabs larger than 2400mm

Method used

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  • Method for manufacturing large-sized 5083 aluminum alloy slab ingot
  • Method for manufacturing large-sized 5083 aluminum alloy slab ingot
  • Method for manufacturing large-sized 5083 aluminum alloy slab ingot

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Experimental program
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Effect test

Embodiment 1

[0023] In this embodiment, the 5083 aluminum alloy wide and large size (2520mm*620mm) slab for hot rolling contains the following chemical elements in mass percentage: Si0.15%, Fe0.35%, Cu0.10%, Mn0.45%~0.80% , Mg4.10%~4.70%, Cr0.05~0.2%, Na≤0.0005%, Zn0.10%, Ti0.10%, single impurity≤0.05%, total impurity≤0.15%, and the rest is Al.

[0024] The manufacturing method step of above-mentioned slab is as follows:

[0025] A. Prepare raw and auxiliary materials: Weigh aluminum ingots, sodium-free alloy additives and waste materials respectively. The sodium-free alloy additives include iron agent, manganese agent, fast-melting silicon, chromium agent, and magnesium ingots, and the ratio of waste materials is 30%;

[0026] B. Melting and standing: the melting furnace gas temperature is 1050°C-1065°C during smelting, the melt temperature is kept between 700°C-715°C, the converter temperature is controlled at 735°C, and the refining temperature after transferring to the holding furnace ...

Embodiment 2

[0035] The chemical element composition and ratio of the slab for hot rolling of the 5083 aluminum alloy with wide width and large specification (2520mm*620mm) in this embodiment are the same as those in Embodiment 1.

[0036] The manufacturing method steps of the slab of the present embodiment are as follows:

[0037] A. Prepare raw and auxiliary materials: Weigh aluminum ingots, sodium-free alloy additives and waste materials respectively. The sodium-free alloy additives include iron agent, manganese agent, fast-melting silicon, chromium agent, and magnesium ingots, and the ratio of waste materials is 50%;

[0038] B. Melting and standing: the melting furnace gas temperature is 1065°C-1080°C during smelting, the melt temperature is kept between 715°C-730°C, the converter temperature is controlled at 740°C, and the refining temperature after transferring to the holding furnace is 725°C °C, the refining time is 50min, and the refining gas is a nitrogen-chlorine mixed gas, wher...

Embodiment 3

[0046] The chemical element composition and ratio of the slab for hot rolling of the 5083 aluminum alloy with wide width and large specification (2520mm*620mm) in this embodiment are the same as those in Embodiment 1.

[0047] The manufacturing method steps of the slab of the present embodiment are as follows:

[0048] A. Prepare raw and auxiliary materials: Weigh aluminum ingots, sodium-free alloy additives and waste materials respectively. The sodium-free alloy additives include iron agent, manganese agent, fast-melting silicon, chromium agent, and magnesium ingots, and the ratio of waste materials is 70%;

[0049] B. Melting and standing: the melting furnace gas temperature is 1080°C-1100°C during smelting, the melt temperature is kept between 730°C-750°C, the converter temperature is controlled at 745°C, and the refining temperature after transferring to the holding furnace is 730°C ℃, the refining time is 60min, and the refining gas is nitrogen-chlorine mixed gas, wherein...

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Abstract

The invention discloses a method for manufacturing a large-sized 5083 aluminum alloy slab ingot, and relates to the technical field of aluminum alloy manufacturing. The method includes the steps that raw and auxiliary materials are prepared; the temperature of melt in the smelting process is 700-750 DEG C, the temperature of a converter is 740+ / -5 DEG C, the refining temperature is 720-730 DEG C, and refining gas is nitrogen-chlorine mixed gas; standing is conducted for 30 minutes after refining, and the temperature of a maintaining furnace is 705-715 DEG C; Al5Ti0.2B titanium wires are used for conducting grain refinement, and the additive quantity is 0.25%; chlorine-argon mixed gas with the flow being 4-5 m<3> / h is used for conducting on-line degassing; molten aluminum alloy is released into a distributing launder, and an automatic large-sized all-aluminum oil lubrication crystallizer is led in for casting; the casting temperature is 673+ / -5 DEG C, the automatic start filling time is 135 s, and the automatic oil lubrication pulse value is 5; and saw cutting and face milling are carried out. The method solves the problems that the production efficiency is low and the rate of finished products is also low when an existing aluminum alloy slab ingot is used for producing wide aluminum plates.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy manufacturing, in particular to a method for manufacturing a 5083 aluminum alloy large-size flat ingot. Background technique [0002] After entering the 21st century, with the rapid development of China's macro economy, China's aluminum industry has also developed rapidly. In the aluminum processing industry, especially wide-width aluminum rolled products, due to the relatively backward process equipment and technology, China needs to import a large number of such products every year. Wide-width aluminum and aluminum alloy plates, strips, and foils are widely used in the production of flexible packaging and cans for fruit, food, and beverages due to their excellent performance and high yield. In addition, the products are also widely used in decorative panels, vehicle transportation, Aviation, spaceflight and so on. Wide-width rolling products use high-quality and large-size aluminum allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08
Inventor 汪尚元刘栩黄俊鑫许磊李严法李江宇韦武属王文兵
Owner GUANGXI LIUZHOU YINHAI ALUMINUM IND
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