Preparation method of 5356 aluminum alloy ingot

An aluminum alloy ingot and alloy technology, which is applied in the field of preparation of 5356 aluminum alloy ingot, can solve the problems of difficult alloy processing, welding wire is easy to break, easy to produce pores, etc., to avoid hazards and environmental pollution, to facilitate temperature control, The effect of improving uniformity

Active Publication Date: 2015-09-09
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The air slag control effect of aluminum alloy in the casting process is not good, which will make the air slag content of the aluminum alloy ingot billet too high, especially the high hydrogen content, which not only makes the subsequent processing of the alloy difficult, but also affects the drawing and forming of the welding wire. The welding wire is easy to break, the finished product rate decreases, and it is easy to produce air holes during the welding process, which seriously affects the quality of the welded joint
[0003] At present, the level of domestic aluminum alloy welding wire materials and forming technology is still relatively low, especially the smelting, purification and internal quality co

Method used

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Embodiment 1

[0031] The preparation method of the 5356 aluminum alloy ingot of the present embodiment comprises the following steps:

[0032] (1) Ingredients: by weight percentage, the ingredients include Mg 4.5%, Mn 0.1%, Cr 0.08%, Ti 0.10%, and the balance of Al;

[0033] (2) Preloading and radiation heating: first add pure aluminum ingots to the crucible of the vacuum electromagnetic guide device, and then supply power to the resistance wire of the crucible heating cover to heat the pure aluminum ingots in the crucible until the pure aluminum ingots in the crucible melt It is a melt; carry out slag removal treatment on the surface of the melt;

[0034] (3) Induction heating and electromagnetic stirring: supply alternating current to the induction coil with a power of 25kw to keep the heating temperature at 680-750°C; the melt in the crucible is heated and circulates along the annular pipe connected to the crucible;

[0035] (4) Feeding and sufficient smelting: add components Mg, Mn, Cr...

Embodiment 2

[0040] The preparation method of the 5356 aluminum alloy ingot of the present embodiment comprises the following steps:

[0041] (1) Ingredients: by weight percentage, the ingredients include Mg 4.7%, Mn 0.05%, Cr 0.05, Ti 0.15%, and the balance of Al;

[0042](2) Preloading and radiation heating: first add pure aluminum ingots to the crucible of the vacuum electromagnetic guide device, and then supply power to the resistance wire of the crucible heating cover to heat the pure aluminum ingots in the crucible until the pure aluminum ingots in the crucible melt It is a melt; carry out slag removal treatment on the surface of the melt;

[0043] (3) Induction heating and electromagnetic stirring: supply alternating current to the induction coil with a power of 20kw to keep the heating temperature at 680-750°C; the melt in the crucible is heated and circulates along the annular pipe connected to the crucible;

[0044] (4) Feeding and sufficient smelting: add components Mg, Mn, Cr,...

Embodiment 3

[0049] The preparation method of the 5356 aluminum alloy ingot of the present embodiment comprises the following steps:

[0050] (1) Ingredients: by weight percentage, the ingredients include Mg 5.5%, Mn0.12%, Cr 0.20%, Ti0.17%, and the rest of Al;

[0051] (2) Preloading and radiation heating: first add pure aluminum ingots to the crucible of the vacuum electromagnetic guide device, and then supply power to the resistance wire of the crucible heating cover to heat the pure aluminum ingots in the crucible until the pure aluminum ingots in the crucible melt It is a melt; carry out slag removal treatment on the surface of the melt;

[0052] (3) Induction heating and electromagnetic stirring: supply alternating current to the induction coil with a power of 22kw to keep the heating temperature at 680-750°C; the melt in the crucible is heated and circulates along the annular pipe connected to the crucible;

[0053] (4) Feeding and sufficient smelting: add components Mg, Mn, Cr, Ti...

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Abstract

The invention relates to a preparation method of a 5356 aluminum alloy ingot. The method uses an electromagnetic effect for heating and for preserving the temperature of an alloy melt, so that the temperature control is convenient; at the same time of heating, as alternating current supplied in an induction coil can form variable magnetic current, and the variable magnetic current can form induction current in an annular pipe communicated with a crucible, the melt circularly flows by surrounding the annular pipe to achieve a stirring effect, and the component and structure uniformity of the aluminum alloy ingot is effectively improved; under the stirring effect generated by the induction coil, the vacuum purification treatment is supplemented to effectively improve the dispersion speed of hydrogen atoms in the melt, so that the high-speed degassing is facilitated, the degassing effect is enhanced, and the hydrogen content in the 5356 aluminum alloy ingot is reduced; and through detections, the hydrogen content of the 5356 aluminum alloy ingot prepared by the method is lower than 0.15 mL/100 gAl.

Description

technical field [0001] The invention relates to a method for preparing a 5356 aluminum alloy ingot. Background technique [0002] As a general-purpose welding material, ER5356 aluminum alloy welding wire is widely used in the welding of various aluminum alloy structural parts. In recent years, with the large-scale application of aluminum alloy structural parts, the demand for aluminum alloy welding wire is also increasing. In many cases, the quality of the aluminum alloy welding wire and the quality of the weld often depend on the casting level of the aluminum alloy ingot. The air slag control effect of aluminum alloy in the melting and casting process is not good, which will make the air slag content of the aluminum alloy ingot billet high, especially the high hydrogen content, which not only makes the subsequent processing of the alloy difficult, but also affects the drawing and forming of the welding wire. The welding wire is very easy to break, and the finished product ...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C1/03C22B9/04B22D11/00B22D11/119
CPCY02P10/25
Inventor 刘红伟马良超甄立玲樊建勋马冰冯胜强王有祁侯立群范云波崔崇亮
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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