CN103981403A - Outfitting aluminum alloy profile and preparation method thereof - Google Patents
Outfitting aluminum alloy profile and preparation method thereof Download PDFInfo
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- CN103981403A CN103981403A CN201410152065.8A CN201410152065A CN103981403A CN 103981403 A CN103981403 A CN 103981403A CN 201410152065 A CN201410152065 A CN 201410152065A CN 103981403 A CN103981403 A CN 103981403A
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Abstract
The present invention discloses an outfitting aluminum alloy profile and a preparation method thereof, wherein the chemical components of the ally comprise, by mass, 0.2-0.5% of Si, less than or equal to 0.35% of Fe, less than or equal to 0.10% of Cu, 0.7-1.3% of Mn, 2.0-2.5% of Mg, 0.5-1.0% of Co, less than or equal to 0.10% of Zn, less than or equal to 0.05% of Ti, 0.4-0.6% of W, 0.25-0.45% of Ru, 0.1-0.2% of La, 0.05-0.15% of Y, 0.03-0.07% of Tb, and the balance of Al. The aluminum alloy profile has characteristics of excellent comprehensive performance, high strength, high toughness, excellent seawater corrosion resistance, good surface treatment performance, good welding performance and long service life, and can be widely used in ship anchors, masts, accommodation ladders and other outfittings.
Description
Technical field
the present invention relates to aluminium alloy extrusions and preparation method thereof for a kind of fitting-out, belong to aluminum alloy materials field.
Background technology
Aluminium alloy density is low, but strength ratio is higher, approaches or surpasses high-quality steel, and plasticity is good, is easy to processing, can be made into various section bars, has good mechanical property, physicals and corrosion resistance.Aluminium alloy extrusions is widely used in aerospace, communications and transportation, machinofacture, construction and decoration, chemical industry etc., is a kind of important non-ferrous metal structured material.Fast development along with shipbuilding industry, not only require aluminium alloy extrusions to there is higher intensity and toughness, also will there is excellent corrosion resistance nature, yet the problem that the toughness of existing aluminium alloy extrusions is low, resistance to corrosion seawater is poor has limited the application of aluminium alloy extrusions in fitting-out.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, aluminium alloy extrusions and preparation method thereof for a kind of fitting-out is provided, the aluminium alloy extrusions making not only has higher intensity and toughness, also has excellent sea water corrosion resistant.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of fitting-out aluminium alloy extrusions, by mass percent, than this alloy composition, be: Si 0.2-0.5, Fe≤0.35, Cu≤0.10, Mn 0.7-1.3, Mg 2.0-2.5, Co 0.5-1.0, Zn≤0.10, Ti≤0.05, W 0.4-0.6, Ru 0.25-0.45, La 0.1-0.2, Y 0.05-0.15, Tb 0.03-0.07, surplus is Al.
The preparation method of aluminium alloy extrusions for fitting-out of the present invention, comprises the following steps:
(1) by formulation ratio, calculate and take furnace charge, get aluminium ingot, magnesium ingot adds heat fused in smelting furnace, when melt temperature reaches 720-740 ℃, add successively Al-6wt%Co master alloy, Al-4wt%W master alloy, the follow-up continuous 735-755 ℃ that is warming up to stirs, add successively Al-3wt%Ru master alloy, Al-10wt%Mn master alloy, after furnace charge all melts, stir 15-20min, make composition even, adjust temperature to 725-745 ℃, by nitrogen, refining agent is blown into liquation face 2/3 place and carries out refining, refining agent consumption is the 1-2% of liquation weight, after refining 15-25min, skim, standing 10-15min, adjust temperature to 710-730 ℃, add other surplus element alloying constituent, stir after 15-20min, sampling analysis, it is qualified to be adjusted to, take gas flow as the logical 70N of 1.4-1.8L/min
2+ 20%Cl
2+ 10%CO mixed gas refinery by de-gassing 15-20min, skims, and is warming up to 725-745 ℃, is incubated the cast of can coming out of the stove after standing 10-15min, and teeming temperature is 685-705 ℃,
(2) strand step (1) being obtained joins in smelting furnace, be heated to 730-750 ℃, after it melts completely, after stirring 20-30min, carry out sampling analysis for the second time, then adjust temperature to 715-735 ℃, take gas flow as the logical 60%Ar+40%SF of 1.6-2.2L/min
6mixed gas refinery by de-gassing 15-20min, standing 10-15min after skimming, both analysis is carried out in sampling, and analytical results meets alloying constituent and requires to come out of the stove cast, and teeming temperature is 690-710 ℃;
(3) remelting strand step (2) being obtained carries out homogenizing processing in homogenizing processing stove: first at 450-480 ℃, be incubated 5-10h, then strong wind cooling is cooled to below 50 ℃ to putting into 0-5 ℃ of frozen water after 200-250 ℃, at 340-360 ℃, be incubated 4-8h again, be warming up to 490-520 ℃, insulation 10-15h, air cooling is to room temperature;
(4) by the strand extrusion molding after homogenizing, extrusion temperature is 465-485 ℃, and extruding rate is 12-18m/min, then the section bar of extruding is adopted to online air-cooled or water smoke Cooling Quenching, carries out tension leveling after quenching, and tensile deformation amount is 2-3%;
(5) aluminium alloy extrusions after tension leveling is carried out to ageing treatment: first at 100-150 ℃, be incubated 5-15h, air cooling is to room temperature, then is incubated 1-2h at 200-250 ℃, and the air cooling of coming out of the stove is to room temperature.
Described refining agent by following weight part component form: SODIUMNITRATE 18-24, fluoric acid titanium potassium 5-10, Repone K 33-41, zinc chloride 15-20, sodium sulfate 3-8, phosphorus pentachloride 10-15, Sodium tetrafluoroborate 12-18, aluminum fluoride 8-14, calcium carbonate 16-22, wood charcoal powder 10-15.
Beneficial effect of the present invention:
Aluminium alloy extrusions excellent combination property of the present invention, not only has higher intensity and toughness, also has excellent sea water corrosion resistant, and surface treatment properties is good, good welding performance, long service life, can be widely used in the fitting-outs such as ship anchor, mast, gangway ladder.
Embodiment
?embodiment
A kind of fitting-out aluminium alloy extrusions, by mass percent, than this alloy composition, be: Si 0.2-0.5, Fe≤0.35, Cu≤0.10, Mn 0.7-1.3, Mg 2.0-2.5, Co 0.5-1.0, Zn≤0.10, Ti≤0.05, W 0.4-0.6, Ru 0.25-0.45, La 0.1-0.2, Y 0.05-0.15, Tb 0.03-0.07, surplus is Al.
The preparation method of aluminium alloy extrusions for fitting-out, comprises the following steps:
(1) by formulation ratio, calculate and take furnace charge, get aluminium ingot, magnesium ingot adds heat fused in smelting furnace, when melt temperature reaches 730 ℃, add successively Al-6wt%Co master alloy, Al-4wt%W master alloy, stir and follow-up continuing be warming up to 745 ℃, add successively Al-3wt%Ru master alloy, Al-10wt%Mn master alloy, after furnace charge all melts, stir 15min, make composition even, adjust temperature to 730 ℃, by nitrogen, refining agent is blown into liquation face 2/3 place and carries out refining, refining agent consumption is 1.5% of liquation weight, after refining 20min, skim, standing 15min, adjust temperature to 720 ℃, add other surplus element alloying constituent, stir after 15-20min, sampling analysis, it is qualified to be adjusted to, take gas flow as the logical 70N of 1.6L/min
2+ 20%Cl
2+ 10%CO mixed gas refinery by de-gassing 20min, skims, and is warming up to 735 ℃, is incubated the cast of can coming out of the stove after standing 15min, and teeming temperature is 695 ℃,
(2) strand step (1) being obtained joins in smelting furnace, is heated to 740 ℃, after it melts completely, after stirring 25min, carries out sampling analysis for the second time, then adjusts temperature to 725 ℃, take gas flow as the logical 60%Ar+40%SF of 1.8L/min
6mixed gas refinery by de-gassing 15min, standing 10min after skimming, both analysis is carried out in sampling, and analytical results meets alloying constituent and requires to come out of the stove cast, and teeming temperature is 710 ℃;
(3) remelting strand step (2) being obtained carries out homogenizing processing in homogenizing processing stove: first at 470 ℃, be incubated 8h, then after strong wind cooling to 240 ℃, put into 3 ℃ of frozen water and be cooled to below 50 ℃, then be incubated 5h at 350 ℃, be warming up to 510 ℃, insulation 12h, air cooling is to room temperature;
(4) by the strand extrusion molding after homogenizing, extrusion temperature is 475 ℃, and extruding rate is 15m/min, then the section bar of extruding is adopted to online air-cooled or water smoke Cooling Quenching, carries out tension leveling after quenching, and tensile deformation amount is 2.5%;
(5) aluminium alloy extrusions after tension leveling is carried out to ageing treatment: first at 120 ℃, be incubated 10h, air cooling is to room temperature, then is incubated 1h at 230 ℃, and the air cooling of coming out of the stove is to room temperature.
Described refining agent by following weight part component form: SODIUMNITRATE 22, fluoric acid titanium potassium 8, Repone K 36, zinc chloride 17, sodium sulfate 5, phosphorus pentachloride 12, Sodium tetrafluoroborate 16, aluminum fluoride 12, calcium carbonate 20, wood charcoal powder 10.
Through check, the salient features of gained aluminium alloy extrusions is: tensile strength reaches 472MPa, and yield strength reaches 359MPa, and elongation is 13.5%, and the corrosion rate of salt-fog test is 0.09mg/cm
2d.
Claims (3)
1. a fitting-out aluminium alloy extrusions, it is characterized in that, by mass percent, than this alloy composition, be: Si 0.2-0.5, Fe≤0.35, Cu≤0.10, Mn 0.7-1.3, Mg 2.0-2.5, Co 0.5-1.0, Zn≤0.10, Ti≤0.05, W 0.4-0.6, Ru 0.25-0.45, La 0.1-0.2, Y 0.05-0.15, Tb 0.03-0.07, surplus is Al.
2. the preparation method of aluminium alloy extrusions for fitting-out as claimed in claim 1, is characterized in that comprising the following steps:
(1) by formulation ratio, calculate and take furnace charge, get aluminium ingot, magnesium ingot adds heat fused in smelting furnace, when melt temperature reaches 720-740 ℃, add successively Al-6wt%Co master alloy, Al-4wt%W master alloy, the follow-up continuous 735-755 ℃ that is warming up to stirs, add successively Al-3wt%Ru master alloy, Al-10wt%Mn master alloy, after furnace charge all melts, stir 15-20min, make composition even, adjust temperature to 725-745 ℃, by nitrogen, refining agent is blown into liquation face 2/3 place and carries out refining, refining agent consumption is the 1-2% of liquation weight, after refining 15-25min, skim, standing 10-15min, adjust temperature to 710-730 ℃, add other surplus element alloying constituent, stir after 15-20min, sampling analysis, it is qualified to be adjusted to, take gas flow as the logical 70N of 1.4-1.8L/min
2+ 20%Cl
2+ 10%CO mixed gas refinery by de-gassing 15-20min, skims, and is warming up to 725-745 ℃, is incubated the cast of can coming out of the stove after standing 10-15min, and teeming temperature is 685-705 ℃,
(2) strand step (1) being obtained joins in smelting furnace, be heated to 730-750 ℃, after it melts completely, after stirring 20-30min, carry out sampling analysis for the second time, then adjust temperature to 715-735 ℃, take gas flow as the logical 60%Ar+40%SF of 1.6-2.2L/min
6mixed gas refinery by de-gassing 15-20min, standing 10-15min after skimming, both analysis is carried out in sampling, and analytical results meets alloying constituent and requires to come out of the stove cast, and teeming temperature is 690-710 ℃;
(3) remelting strand step (2) being obtained carries out homogenizing processing in homogenizing processing stove: first at 450-480 ℃, be incubated 5-10h, then strong wind cooling is cooled to below 50 ℃ to putting into 0-5 ℃ of frozen water after 200-250 ℃, at 340-360 ℃, be incubated 4-8h again, be warming up to 490-520 ℃, insulation 10-15h, air cooling is to room temperature;
(4) by the strand extrusion molding after homogenizing, extrusion temperature is 465-485 ℃, and extruding rate is 12-18m/min, then the section bar of extruding is adopted to online air-cooled or water smoke Cooling Quenching, carries out tension leveling after quenching, and tensile deformation amount is 2-3%;
(5) aluminium alloy extrusions after tension leveling is carried out to ageing treatment: first at 100-150 ℃, be incubated 5-15h, air cooling is to room temperature, then is incubated 1-2h at 200-250 ℃, and the air cooling of coming out of the stove is to room temperature.
3. the preparation method of aluminium alloy extrusions for fitting-out according to claim 2, it is characterized in that, described refining agent by following weight part component form: SODIUMNITRATE 18-24, fluoric acid titanium potassium 5-10, Repone K 33-41, zinc chloride 15-20, sodium sulfate 3-8, phosphorus pentachloride 10-15, Sodium tetrafluoroborate 12-18, aluminum fluoride 8-14, calcium carbonate 16-22, wood charcoal powder 10-15.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555085A (en) * | 2017-01-09 | 2017-04-05 | 安徽辰航铝业有限公司 | A kind of aluminium alloy |
| CN107058814A (en) * | 2017-06-09 | 2017-08-18 | 太仓东旭精密机械有限公司 | A kind of motorcycle aluminium alloy |
| CN111560548A (en) * | 2020-06-01 | 2020-08-21 | 凯米特新材料科技有限公司 | High-precision high-strength light aluminum alloy section for high-speed rail and preparation method thereof |
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| CN1413838A (en) * | 2001-09-12 | 2003-04-30 | 富士胶片株式会社 | Support device for offset printing plate and offset printing plate raw sheet |
| CN102864399A (en) * | 2012-06-01 | 2013-01-09 | 西南铝业（集团）有限责任公司 | Production method of marine checkered plates |
| CN103710586A (en) * | 2013-12-17 | 2014-04-09 | 芜湖万润机械有限责任公司 | Preparation method of high-strength heat-resistant aluminum alloy profile |
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2014
- 2014-04-16 CN CN201410152065.8A patent/CN103981403A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413838A (en) * | 2001-09-12 | 2003-04-30 | 富士胶片株式会社 | Support device for offset printing plate and offset printing plate raw sheet |
| CN102864399A (en) * | 2012-06-01 | 2013-01-09 | 西南铝业（集团）有限责任公司 | Production method of marine checkered plates |
| CN103710586A (en) * | 2013-12-17 | 2014-04-09 | 芜湖万润机械有限责任公司 | Preparation method of high-strength heat-resistant aluminum alloy profile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555085A (en) * | 2017-01-09 | 2017-04-05 | 安徽辰航铝业有限公司 | A kind of aluminium alloy |
| CN107058814A (en) * | 2017-06-09 | 2017-08-18 | 太仓东旭精密机械有限公司 | A kind of motorcycle aluminium alloy |
| CN111560548A (en) * | 2020-06-01 | 2020-08-21 | 凯米特新材料科技有限公司 | High-precision high-strength light aluminum alloy section for high-speed rail and preparation method thereof |
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Application publication date: 20140813 |
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