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6063 aluminium alloy made by fine grained aluminium ingot and preparation method thereof

A technology of aluminum alloy and aluminum ingot, applied in the field of aluminum alloy manufacturing, can solve the problem of inability to guarantee the low-magnification grain size of the as-cast structure, and achieve the effects of convenient structure production, high strength and good aging characteristics

Inactive Publication Date: 2005-09-14
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology adds rare earth elements and improves the performance of 6063 alloy, it cannot guarantee the low-magnification grain size level of the as-cast state

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The fine-grained aluminum ingot with a mass fraction of Ti of 0.11% was selected as a raw material to prepare 6063 aluminum alloy, and the mass fraction of titanium in the target product was 0.03%.

[0051] According to the ratio of 0.4% mass fraction of silicon in the target product, silicon is placed in the smelting furnace, preheated to 500 ° C, then the fine-grained aluminum ingot melt directly out of the electrolytic cell is added, and pure aluminum of required quality ( Such as Al99.70A), so that the mass fraction of molten titanium is 0.03%;

[0052] The second injection of refining agent is used, the temperature drops to 740 ° C, the first injection is 15 minutes, the injection gas is nitrogen, and the refining agent used is the refining agent for deformed aluminum and aluminum alloy purchased from the metal solvent factory;

[0053] Add pure Mg at a mass fraction of 0.5%;

[0054] Analyze the melt composition, if the mass fraction of titanium is lower than 0.0...

Embodiment 2

[0061] The fine-grained aluminum ingot with a mass fraction of Ti of 0.12% was selected as a raw material to prepare 6063 aluminum alloy, and the mass fraction of titanium in the target product was 0.04%.

[0062] Put the mass fraction of Ti as 0.12% fine-grained aluminum ingot into the smelting furnace, add the required mass of pure aluminum, after melting, make the mass fraction of molten titanium be 0.04%;

[0063] The refining agent is injected twice, the temperature is 740°C, the first injection is 12 minutes, and the injection gas is argon;

[0064] According to the mass fraction of 0.38% in the target product, add silicon;

[0065] Add pure Mg at a mass fraction of 0.48%;

[0066] Composition analysis, if the mass fraction of titanium is lower than 0.03%, add titanium agent for supplement; if it is higher than 0.05%, add pure aluminum for dilution;

[0067] Inject the refining agent for the second time for 11 minutes;

[0068] Let it stand for 20 minutes, and pour it...

Embodiment 3

[0073] The fine-grained aluminum ingot with a mass fraction of Ti of 0.15% was selected as a raw material to prepare 6063 aluminum alloy, and the mass fraction of titanium in the target product was 0.05%.

[0074] According to the mass fraction of silicon in the target product is 0.42%, silicon is placed in the smelting furnace, preheated to 600 ℃, then add the fine-grained aluminum ingot melt directly out of the electrolytic cell, and add the required quality of pure aluminum (such as Al99.70A), so that the mass fraction of molten titanium is 0.05%;

[0075] Use the second injection of refining agent, the temperature drops to 740 ° C, the first injection is 14 minutes, and the injection gas is nitrogen;

[0076] Add pure Mg at a mass fraction of 0.52%;

[0077] Analyze the melt composition, if the mass fraction of titanium is lower than 0.04%, add potassium fluorotitanate (K 2 TiF 6 ) for supplement, if higher than 0.06%, add pure aluminum for dilution;

[0078] The secon...

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Abstract

This invention provides a 6063 aluminum alloy made by cryptomere aluminium ingot. It is constituted by Al, Si, Mg, RE, B elements, quality portion is that Si 0.20~0.6%, Mg 0.45~0.9%, REíœ0.35%, Bíœ0.01%. It also provides a method of preparing the 6063 aluminum alloy, aluminum oxide and titanium oxide compound is added into aluminum electrolyte tank, cryptomere aluminium ingot with titanium quality portion is 0.01~0.20% is generated, alloy element is added to cryptomere aluminium ingot directly from electrolyte tank or by cryptomere aluminium ingot melting to melted 6063 aluminum alloy. Because of its special titanium adding mode, production cost is cheap, as-cast grain is little and uniform, its tensile strength is equal to 6063 aluminum alloy thinned by aluminium titanium boron hardner, and extensibility is increased 20% and better surface capability can get. 6063 aluminum alloy after pressure has good ageing characteristic, it can reach high intension in short time and keep high intension long time, it is hard overaging.

Description

Technical field [0001] The invention belongs to the field of aluminum alloy manufacturing, and in particular relates to a 6063 aluminum alloy manufactured from fine-grained aluminum ingots and a manufacturing method thereof. Background technique [0002] 6063 aluminum alloy is an aluminum alloy grade in GB / T 3190 "Chemical Composition of Deformed Aluminum and Aluminum Alloys". The chemical composition of the alloy is: [0003] The mass fraction of silicon is: 0.20-0.6%; [0004] The mass fraction of magnesium is: 0.45-0.9%; [0005] The mass fraction of iron is: ≤0.35%; [0006] The mass fraction of copper is: ≤0.10%; [0007] The mass fraction of manganese is: ≤0.10%; [0008] The mass fraction of chromium is: ≤0.10%; [0009] The mass fraction of zinc is: ≤0.10%; [0010] The mass fraction of titanium is: ≤0.10%; [0011] The mass fraction of each other element is not more than 0.05%, and the sum is not more than 0.15%; the balance is aluminum. [0012] Adding a gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/06
Inventor 左秀荣宋天福翁永刚王明星刘志勇刘忠侠杨昇
Owner ZHENGZHOU UNIV
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