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A kind of production method of high-magnesium aluminum alloy sheet

A high-magnesium aluminum alloy and production method technology, applied in the field of aluminum alloy processing, can solve the problems of unstable mechanical properties, uneven thickness control, unstable annealing performance, etc., shorten the production cycle, improve dimensional stability, save Effect of annealing process

Active Publication Date: 2016-08-24
广西南南铝加工有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Because this process needs to be clad with pure aluminum, it will not only cause problems such as low production efficiency and high cost; and the 5A06-H34 thin plate produced by the process has the following disadvantages: (1) unstable mechanical properties; (2) thickness control Inhomogeneous; (3) Unstable annealing performance and poor corrosion resistance

Method used

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  • A kind of production method of high-magnesium aluminum alloy sheet

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Embodiment 1

[0057] Prepare high-magnesium aluminum alloy sheets according to the following steps: (1) Raw material preparation: Weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-copper master alloy, pure magnesium ingot, aluminum Manganese master alloy, aluminum-zinc master alloy, aluminum-beryllium master alloy, aluminum-titanium master alloy and pure aluminum ingot; (2) smelting: the raw materials weighed in step (1) except aluminum-beryllium master alloy and aluminum-titanium master alloy are fed into Smelting in a dome hydraulic inclined melting furnace, the melting temperature is 720°C, and the melting time is 8 hours to obtain an alloy solution; (3) heat preservation: refining, standing still, adding aluminum-beryllium master alloy and aluminum-titanium master alloy, heat preservation temperature 710°C, the holding time is 5h; (4) casting: using semi-continuous casting, the casting temperature is 680°C to obtain alloy ingots; (5) stress relief annealing: place...

Embodiment 2

[0059] Prepare high-magnesium aluminum alloy sheets according to the following steps: (1) Preparation of materials: Weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-copper master alloy, pure magnesium ingot, aluminum Manganese master alloy, aluminum-zinc master alloy, aluminum-beryllium master alloy, aluminum-titanium master alloy and pure aluminum ingot; (2) smelting: the raw materials weighed in step (1) except aluminum-beryllium master alloy and aluminum-titanium master alloy are fed into Smelting in a dome hydraulic inclined melting furnace, the melting temperature is 750°C, and the melting time is 4 hours to obtain an alloy solution; (3) heat preservation: refining, standing still, adding aluminum-beryllium master alloy and aluminum-titanium master alloy, heat preservation temperature 730°C, the holding time is 3h; (4) casting: using semi-continuous casting, the casting temperature is 690°C to obtain alloy ingots; (5) stress relief annealing: place...

Embodiment 3

[0061] Prepare high-magnesium aluminum alloy sheets according to the following steps: (1) Raw materials: Weigh aluminum-silicon master alloy, aluminum-iron master alloy, aluminum-copper master alloy, pure magnesium ingot, aluminum Manganese master alloy, aluminum-zinc master alloy, aluminum-beryllium master alloy, aluminum-titanium master alloy and pure aluminum ingot; (2) smelting: the raw materials weighed in step (1) except aluminum-beryllium master alloy and aluminum-titanium master alloy are fed into Smelting in a dome hydraulic tilting melting furnace with a melting temperature of 740°C and a melting time of 5 hours to obtain an alloy solution; (3) heat preservation: refining, standing still, adding aluminum-beryllium master alloy and aluminum-titanium master alloy, heat preservation temperature 720°C, the holding time is 4h; (4) casting: using semi-continuous casting, the casting temperature is 685°C to obtain alloy ingots; (5) stress relief annealing: place the alloy in...

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Abstract

The invention discloses a production method of a high-magnesium aluminum alloy thin plate, which belongs to the field of aluminum alloy processing. The production method of the present invention includes the steps of material preparation, smelting, heat preservation, casting, stress relief annealing, machining, preheating, hot rolling, cold rolling, stabilizing annealing, transverse shearing and the like. Compared with the 5A06-H34 thin plate produced in the prior art, by increasing the preheating temperature and controlling the final rolling temperature, the 5A06-H34 thin plate produced by the present invention does not need pure aluminum cladding, saves the intermediate annealing process, and reduces the production cost. The production cycle is shortened, and the mechanical properties such as tensile strength, yield strength and elongation are improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to a production method of a high-magnesium aluminum alloy thin plate. Background technique [0002] 5A06 high-magnesium aluminum alloy is an Al-Mg alloy. This alloy has high strength, good weldability, excellent corrosion resistance and easy processing and formability. It is widely used in welding structural parts of transportation equipment, coal transport vehicles, refrigeration equipment, televisions Manufacture of towers, drilling rigs, missiles, parts, armor and more. Because the magnesium content is 5.8% to 6.8%, the hot rolling deformation resistance is large, and it is easy to crack. The industrial production of 5A06-H34 sheet often has many problems such as unstable mechanical properties, poor corrosion resistance, and uneven hot rolling thickness. In order to prevent cracking in hot rolling, the process of cladding rolling is often used, and the welding process is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/047C22C21/08
Inventor 朱玉涛龙旭初黄相博刘莹徐艳萍曾光黄程毅
Owner 广西南南铝加工有限公司
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