CN1109768C - Anticorrosion aluminium ally section and its preparing process - Google Patents
Anticorrosion aluminium ally section and its preparing process Download PDFInfo
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- CN1109768C CN1109768C CN 00115387 CN00115387A CN1109768C CN 1109768 C CN1109768 C CN 1109768C CN 00115387 CN00115387 CN 00115387 CN 00115387 A CN00115387 A CN 00115387A CN 1109768 C CN1109768 C CN 1109768C
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Abstract
The present invention relates to an anticorrosion aluminium alloy section material and a making process thereof, which is characterized in that the anticorrosion aluminium alloy section material comprises the following chemical constituents by the weight percentage: 0.3 to 0.555 of Si, 0.5 to 0.9% of Mg, 0.08 to 0.3% of Re(rare earth), less than or equal to 0.3% of Fe, less than or equal to 0.1% of Cu, less than or equal to 0.1% of Ti, less than or equal to 0.1% of Mn, less than or equal to 0.1% of Zn, less than or equal to 0.1% of Cr and Al as the rest. Compared with the prior art, because the present invention adds a rare earth intermediate compound to an aluminium liquid, the aluminium alloy section material largely enhances anticorrosion property and extrusion speed, surface smoothness is enhanced, and the strength and the material forming rate of the material are correspondingly enhanced.
Description
The present invention relates to alloy material and manufacture method thereof, relate in particular to a kind of anticorrosion aluminium ally section and manufacture method thereof.
At present, the common aluminum alloy section bar is attractive in appearance owing to it, light weight is widely used in industries such as building, decoration, and still, it also deposits obvious defects, and is promptly anti-corrosion not ideal enough, and the surface easily goes out white point, thereby has influenced its use value.Chinese patent CN1224069A has announced a kind of anticorodal and application thereof, it also is to add mishmetal to reach preservative effect in aluminium alloy, but this product is a kind of coating material that is used for metal or its body surface, or patching materials, and the anticorrosion problem of aluminium alloy extrusions does not solve so far well.
Purpose of the present invention is exactly to provide aluminium alloy extrusions and the manufacture method thereof that a kind of corrosion resisting property is good, surface smoothness is high for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can realize in the following manner: a kind of anticorrosion aluminium ally section, its Chemical Composition following (weight percentage): Si0.3～0.55, Mg0.5～0.9, Re0.08～0.3, Fe≤0.3, Cu≤0.1, Ti≤0.1, Mn≤0.1, Zn≤0.1, Cr≤0.1, surplus are Al; Described Re is a mishmetal, and its chemical constitution is (weight percentage): La21～26, Ce50～54, Pr5～7, Nd15～20, Fe, Mg, Si, Mo impurity＜1.
A kind of manufacture method of anticorrosion aluminium ally section, its processing step is as follows: at first will smelt into the rare earth intermediate with fine aluminium in composite crucible by the mishmetal that La, Ce, Pr, Nd form, wherein mishmetal content is 9～10 (weight percentage), the chemical constitution of described mishmetal is (weight percentage): La21～26, Ce50～54, Pr5～7, Nd15～20, Fe, Mg, Si, Mo impurity＜1; Then this rare earth intermediate is added through fully stirring in the fused aluminium alloy melting, the temperature of described aluminium alloy dissolution liquid is controlled at 700～720 ℃, the Chemical Composition of described aluminium alloy melting following (weight percentage): Si0.3～0.55, Mg0.5～0.9, Fe≤0.3, Cu≤0.1, Ti≤0.1, Mn≤0.1, Zn≤0.1, Cr≤0.1, surplus are Al; The content of described mishmetal is 0.08～0.3 (weight percentage) of aluminium alloy melting; Add refining agent again and stir, add insulating covering agent then and be drawn into the rare earth aluminium bar, be squeezed into needed section bar at last.
Compared with prior art, the present invention is owing to added the rare earth intermediate in aluminium liquid, it has played the effect of good purification, degasification, removal of impurities to aluminium liquid, and refinement eutectic structure, therefore, improved its etch resistant properties and extrusion speed greatly, improved surface smoothness, the intensity and the lumber recovery of material are all improved accordingly.Be rare earth aluminium alloy corrosion resistance nature and strength comparison test and test case below:
Table 1:1200 aluminium foil and the corrosion-resistant simultaneous test of 1200Re aluminium foil
| Sample size | Corrosive medium | Test period | Ph | The surface corrosion situation | |
| 1200 aluminium foils | 4 | 5％Nacl | 144h | 7 | Hot spot appears |
| The 1200Re aluminium foil | 7 | 5％Nacl | 144h | 7 | Hot spot does not appear |
| 1200 aluminium foils | 4 | 5％Nacl | 576h | 7 | The macro-corrosion point |
| The 1200Re aluminium foil | 7 | 5％Nacl | 576h | 7 | The 1200Re that is immersed in the solution is faint in color |
Table 2:6063 door and window and the corrosion-resistant simultaneous test of 6063Re door and window
| Sample size | Corrosive medium | Test period | Ph | The surface corrosion situation | |
| 6063 door and windows | 1 | 5％Nacl | 168h | 7 | Material has a small amount of hot spot in the liquid level |
| The 6063Re door and window | 1 | 5％Nacl | 168h | 7 | The very bright and clean no any abnormal conditions of liquid level |
| 6063 door and windows | 1 | 5％Nacl | 264h | 7 | The liquid level intersection of section bar occurs in a large number and unusual obvious corrosion district |
| The 6063Re door and window | 1 | 5％Nacl | 264h | 7 | Several dots (because the defective of material causes) is arranged in the section bar groove |
Table 3:6063 door and window and the test of 6063Re door and window intensity contrast
| Tensile strength | |||
| Test piece number (Test pc No.) | σ b | δ 5 | σ 0.2 |
| 6063 | 186 | 12 | 145 |
| 6063Re | 210 | 14 | 185 |
From above test and test result as can be seen, the aluminium alloy extrusions that adds rare earth has improved 2 times than the section bar resistance to corrosion that does not add rare earth, and the strength of materials also is significantly improved.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
At first smelt the rare earth intermediate, percentage ratio is the formulated mishmetal of La22, Ce52.5, Pr5, Nd20, impurity F e, Mg0.5 by weight, this mishmetal is smelted into the rare earth intermediate with fine aluminium in composite crucible, wherein the content of mishmetal in the rare earth intermediate is 9% (weight); Next adds 2.2 kilograms of these rare earth intermediates in 1 ton of abundant fused 6063 aluminium alloy melting of warp and stirs, the temperature of described 6063 aluminium alloy melting is controlled at 710 ℃, the Chemical Composition of described 6063 aluminium alloy melting is (weight percentage): Si0.3, Mg0.9, Fe0.1, Cu0.1, Ti0.05, Mn0.1, Zn0.01, Cr0.01, and surplus is Al; The aluminium titanium boron that adds 1 kilogram again stirs, and adds 1 kilogram insulating covering agent then and is drawn into alkene soil aluminium bar; Be squeezed into needed section bar at last, the erosion resistance of this section bar and physicals all are significantly improved than common 6063 aluminium alloy extrusions.
Embodiment 2
At first smelt the rare earth intermediate, percentage ratio is the formulated mishmetal of La23, Ce54, Pr6.2, Nd16, impurity Mg, Mo0.8 by weight, this mishmetal is smelted into the rare earth intermediate with fine aluminium in composite crucible, wherein the content of mishmetal in the rare earth intermediate is 10% (weight); Next adds 1 kilogram of this rare earth intermediate in 1 ton of abundant fused 6063 aluminium alloy melting of warp and stirs, the temperature of described 6063 aluminium alloy melting is controlled at 700 ℃, the Chemical Composition of described 6063 aluminium alloy melting is (weight percentage): Si0.5, Mg0.7, Fe0.05, Cu0.05, Ti0.1, Mn0.07, Zn0.1, Cr0.1, and surplus is Al; The aluminium titanium boron that adds 1 kilogram again stirs, and adds 1 kilogram insulating covering agent then and is drawn into alkene soil aluminium bar; Be squeezed into needed section bar at last, the erosion resistance of this section bar and physicals all are significantly improved than common 6063 aluminium alloy extrusions,
Embodiment 3
At first smelt the rare earth intermediate, percentage ratio is the formulated mishmetal of La26, Ce50, Pr5.8, Nd18, impurity F e, Si0.2 by weight, this mishmetal is smelted into the rare earth intermediate with fine aluminium in composite crucible, wherein the content of mishmetal in the rare earth intermediate is 9% (weight); Next adds 3 kilograms of these rare earth intermediates in 1 ton of abundant fused 6063 aluminium alloy melting of warp and stirs, the temperature of described 6063 aluminium alloy melting is controlled at 720 ℃, the Chemical Composition of described 6063 aluminium alloy melting is (weight percentage): Si0.4, Mg0.5, Fe0.1, Cu0.07, Ti0.1, Mn0.07, Zn0.07, Cr0.06, and surplus is Al; The aluminium titanium boron that adds 1 kilogram again stirs, and adds 1 kilogram insulating covering agent then and is drawn into alkene soil aluminium bar; Be squeezed into needed section bar at last, the erosion resistance of this section bar and physicals all are significantly improved than common 6063 aluminium alloy extrusions.
Claims (2)
1. anticorrosion aluminium ally section, it is characterized in that, its Chemical Composition following (weight percentage): Si0.3～0.55, Mg0.5～0.9, Re0.08～0.3, Fe≤0.3, Cu≤0.1, Ti≤0.1, Mn≤0.1, Zn≤0.1, Cr≤0.1, surplus are Al; Described Re is a mishmetal, and its chemical constitution is (weight percentage): La21～26, Ce50～54, Pr5～7, Nd15～20, Fe, Mg, Si, Mo impurity＜1.
2. the manufacture method of an anticorrosion aluminium ally section, it is characterized in that, its processing step is as follows: at first will smelt into the rare earth intermediate with fine aluminium in composite crucible by the mishmetal that La, Ce, Pr, Nd form, wherein mishmetal content is 9～10 (weight percentage), the chemical constitution of described mishmetal is (weight percentage): La21～26, Ce50～54, Pr5～7, Nd15～20, Fe, Mg, Si, Mo impurity＜1; Then this rare earth intermediate is added through fully stirring in the fused aluminium alloy melting, the temperature of described aluminium alloy dissolution liquid is controlled at 700～720 ℃, the Chemical Composition of described aluminium alloy melting following (weight percentage): Si0.3～0.55, Mg0.5～0.9, Fe≤0.3, Cu≤0.1, Ti≤0.1, Mn≤0.1, Zn≤0.1, Cr≤0.1, surplus are Al; The content of described mishmetal is 0.08～0.3 (weight percentage) of aluminium alloy melting; Add refining agent again and stir, add insulating covering agent then and be drawn into the rare earth aluminium bar, be squeezed into needed section bar at last.
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| CN 00115387 CN1109768C (en) | 2000-04-13 | 2000-04-13 | Anticorrosion aluminium ally section and its preparing process |
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| CN 00115387 CN1109768C (en) | 2000-04-13 | 2000-04-13 | Anticorrosion aluminium ally section and its preparing process |
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| CN1109768C true CN1109768C (en) | 2003-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100529132C (en) * | 2007-10-23 | 2009-08-19 | 江苏常铝铝业股份有限公司 | Aluminum alloy band for jalousie and manufacturing method thereof |
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| CN101928864A (en) * | 2010-08-25 | 2010-12-29 | 李其真 | Rare earth aluminum alloy with high thermal conductivity |
| CN101935787B (en) * | 2010-10-19 | 2012-07-11 | 上海友升铝业有限公司 | Aluminum alloy material with high elongation rate |
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| CN105420567B (en) * | 2015-11-24 | 2018-01-23 | 安徽鑫发铝业有限公司 | A kind of high-strength and high ductility corrosion resistant type aluminium alloy extrusions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100529132C (en) * | 2007-10-23 | 2009-08-19 | 江苏常铝铝业股份有限公司 | Aluminum alloy band for jalousie and manufacturing method thereof |
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