CN1834275A - Novel composite aluminium alloy plates and prepn. method - Google Patents
Novel composite aluminium alloy plates and prepn. method Download PDFInfo
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- CN1834275A CN1834275A CN 200610009960 CN200610009960A CN1834275A CN 1834275 A CN1834275 A CN 1834275A CN 200610009960 CN200610009960 CN 200610009960 CN 200610009960 A CN200610009960 A CN 200610009960A CN 1834275 A CN1834275 A CN 1834275A
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Abstract
This invention discloses a method for manufacturing a new type of aluminum alloy composite sheets, and solves the problems of low mechanical properties and low yield existing with present aluminum alloy composite sheets. The sheets are composed of three parallel sheets. The top and the bottom sheets are composed of Si 9.4-10 wt.%, Fe 0.4 wt.%, Cu 0.2 wt.%, Mn 0.1 wt.%, Mg 1.2-1.8 wt.%, Zn 0.2 wt.% and Al as balance. The middle sheet is composed of Si 0.4 wt.%, Fe 0.4-0.6 wt.%, Cu 0.07-0.15 wt.%, Mn 1.1-1.3 wt.%, Ti 0.02-0.03 wt.% and Al as balance. The thickness ratio of the three sheets from top to bottom is 1:2.5~13:1. The sheets are manufactured by: smelting the three alloy ingots, casting into sheets, heating and rolling the top and the bottom sheets, chemically washing and welding, hot-rolling, cold-rolling and annealing the intermediate products to obtain the final products. The aluminum alloy composite sheets have good mechanical properties, and the yield of the final products is increased by more than 15%.
Description
Technical field
The present invention relates to a kind of composite alloy sheet material and preparation method thereof, especially MULTILAYER COMPOSITE sheet alloy and preparation method thereof.
Background technology
Existing MULTILAYER COMPOSITE aluminum alloy plate materials has the vast market space, but its mechanical property is low, yield rate is low, production technique is unstable, there are surface quality problems such as greasy dirt, sticking wound in plate surface, and can't determine rational cold working rate, cause the MULTILAYER COMPOSITE aluminum alloy plate materials can't widespread use.
Summary of the invention
The objective of the invention is that existing MULTILAYER COMPOSITE aluminum alloy plate materials mechanical property is low, yield rate is low, production technique is unstable in order to solve, can't determine rational cold working rate, there is the defective of surface quality problems such as greasy dirt, sticking wound in plate surface, and a kind of novel composite aluminium alloy plates that provides and preparation method thereof.Novel composite aluminium alloy plates is made by the mutually horizontal three layers of parallel aluminum alloy plate materials of cross section, and the last coating layer at two ends and following coating layer are all made by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, the aluminium alloy that surplus is aluminium by weight percentage about being positioned at; Sandwich layer between last coating layer and following coating layer is made by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, the aluminium alloy that surplus is aluminium by weight percentage; The thickness of three layers of aluminum alloy plate materials is 1: 2.5～13: 1 than from top to bottom.Novel composite aluminium alloy plates prepares according to the following steps: (one) will be by weight percentage all by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, surplus is that the last coating layer made of aluminium and following coating layer aluminium alloy ingot bar reach by weight percentage by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, surplus is the core-layer aluminum alloy ingot bar melting under 690～800 ℃ of conditions respectively that aluminium is made; (2) and then under 690～750 ℃ of conditions, be cast as the identical cast panel of cross-sectional dimension; (3) cast panel that will be used to make coating layer and following coating layer heats 6～8h under 500 ± 10 ℃ of conditions, then be rolled under 410～450 ℃ of conditions thickness all be 45～55mm on coating layer aluminium alloy plate and following coating layer aluminium alloy plate; (4) upper and lower surface that covers stamen layer cast panel after the erosion of upper and lower coating layer aluminium alloy plate is washed is carried out seam; (5) alloy sheets after the seam is rolled into the blank that thickness is 8.0 ± 0.2mm under 430～480 ℃ condition; (6) blank is batched at room temperature cold rolling; (7) cold rollingly make behind the work in-process that process annealing 8 ± 0.5h is cooled to room temperature again under 500 ± 10 ℃ of conditions, it is thick to be rolled into 0.6～1.6mm afterwards, shears through finishing, biserial, promptly obtains novel composite aluminium alloy plates.
The present invention has determined that rational cold working rate is 15%～35%, stable processing technique, and there are not surface quality problems such as greasy dirt, sticking wound in plate surface.The product good mechanical property that the present invention prepares, than existing product intensity improved 10～15%, toughness increased by 5～10%, and yield rate has improved more than 15%.
Embodiment
Embodiment one: the present embodiment novel composite aluminium alloy plates is made by the mutually horizontal three layers of parallel aluminum alloy plate materials of cross section, and the last coating layer at two ends and following coating layer are all made by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, the aluminium alloy that surplus is aluminium by weight percentage about being positioned at; Sandwich layer between last coating layer and following coating layer is made by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, the aluminium alloy that surplus is aluminium by weight percentage; The thickness of three layers of aluminum alloy plate materials is 1: 2.5～13: 1 than from top to bottom.
Embodiment two: the difference of present embodiment and embodiment one is: the thickness of three layers of aluminum alloy plate materials is 1: 4～9: 1 than from top to bottom.Other is identical with embodiment one.
Embodiment three: present embodiment prepares novel composite aluminium alloy plates according to the following steps: (one) will be by weight percentage all by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, surplus is that the last coating layer made of aluminium and following coating layer aluminium alloy ingot bar reach by weight percentage by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, surplus is the core-layer aluminum alloy ingot bar melting under 690～800 ℃ of conditions respectively that aluminium is made; (2) and then under 690～750 ℃ of conditions, be cast as the identical cast panel of cross-sectional dimension; (3) cast panel that will be used to make coating layer and following coating layer heats 6～8h under 500 ± 10 ℃ of conditions, then be rolled under 410～450 ℃ of conditions thickness all be 45～55mm on coating layer aluminium alloy plate and following coating layer aluminium alloy plate; (4) upper and lower surface that covers stamen layer cast panel after the erosion of upper and lower coating layer aluminium alloy plate is washed is carried out seam; (5) alloy sheets after the seam is rolled into the blank that thickness is 8.0 ± 0.2mm under 430～480 ℃ condition; (6) blank is batched at room temperature cold rolling; (7) cold rollingly make behind the work in-process that process annealing 8 ± 0.5h is cooled to room temperature again under 500 ± 10 ℃ of conditions, it is thick to be rolled into 0.6～1.6mm afterwards, shears through finishing, biserial, promptly obtains novel composite aluminium alloy plates.
Embodiment four: the difference of present embodiment and embodiment three is: be used to make the aluminium alloy ingot bar melting under 710～780 ℃ of conditions respectively of coating layer, sandwich layer and following coating layer in the step ().Other step is identical with embodiment three.
Embodiment five: the difference of present embodiment and embodiment three is: be used to make the aluminium alloy ingot bar melting under 730～760 ℃ of conditions respectively of coating layer, sandwich layer and following coating layer in the step ().Other step is identical with embodiment three.
Embodiment six: the difference of present embodiment and embodiment three is: step (two) is cast cast panel under 710～730 ℃ of conditions.Other step is identical with embodiment three.
Embodiment seven: the difference of present embodiment and embodiment three is: step (two) is cast cast panel under 715～725 ℃ of conditions.Other step is identical with embodiment three.
Embodiment eight: the difference of present embodiment and embodiment three is: the cross-sectional dimension of cast panel is 300mm * 1370mm, 300mm * 1320mm or 300mm * 1240mm in the step (two).Other step is identical with embodiment three.
Embodiment nine: the difference of present embodiment and embodiment three is: cast panel heats 7h under 500 ℃ of conditions in the step (three), then be rolled under 420～440 ℃ of conditions thickness all be 47～54mm on coating layer aluminium alloy plate and following coating layer aluminium alloy plate.Other step is identical with embodiment three.
Embodiment ten: the difference of present embodiment and embodiment three is: the alloy sheets in the step (five) after the seam is rolled into the blank that thickness is 8.0mm under 440～470 ℃ condition.Other step is identical with embodiment three.
Embodiment 11: the difference of present embodiment and embodiment three is: in the step (seven) after the process annealing composite aluminium alloy plates to be rolled into 0.8～1.4mm thick.Other step is identical with embodiment three.
Embodiment 12: the difference of present embodiment and embodiment three is: in the step (seven) after the process annealing composite aluminium alloy plates to be rolled into 1.0～1.2mm thick.Other step is identical with embodiment three.
Embodiment 13: the difference of present embodiment and embodiment three is: during step (four) seam weld seam be full weld and can not deflection on the sandwich layer cast panel.Other step is identical with embodiment three.
Embodiment 14: the difference of present embodiment and embodiment three is: step (seven) work in-process process annealing 8h under 500 ℃ of conditions is cooled to room temperature again.Other step is identical with embodiment three.
Claims (10)
1, a kind of novel composite aluminium alloy plates, novel composite aluminium alloy plates is made by the mutually horizontal three layers of parallel aluminum alloy plate materials of cross section, and the last coating layer and the following coating layer at two ends are all made by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, the aluminium alloy that surplus is aluminium by weight percentage about it is characterized in that being positioned at; Sandwich layer between last coating layer and following coating layer is made by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, the aluminium alloy that surplus is aluminium by weight percentage; The thickness of three layers of aluminum alloy plate materials is 1: 2.5～13: 1 than from top to bottom.
2, a kind of novel composite aluminium alloy plates according to claim 1, the thickness that it is characterized in that three layers of aluminum alloy plate materials is 1: 4～9: 1 than from top to bottom.
3, a kind of preparation method of novel composite aluminium alloy plates is characterized in that novel composite aluminium alloy plates prepares according to the following steps: (one) will be by weight percentage all by 9.40～10.00% silicon, 0.40% iron, 0.20% copper, 0.10% manganese, 1.20～1.80% magnesium, 0.20% zinc, surplus is that the last coating layer made of aluminium and following coating layer aluminium alloy ingot bar reach by weight percentage by 0.40% silicon, 0.40～0.60% iron, 0.07～0.15% copper, 1.1～1.3% manganese, 0.02～0.03% titanium, surplus is the core-layer aluminum alloy ingot bar melting under 690～800 ℃ of conditions respectively that aluminium is made; (2) and then under 690～750 ℃ of conditions, be cast as the identical cast panel of cross-sectional dimension; (3) cast panel that will be used to make coating layer and following coating layer heats 6～8h under 500 ± 10 ℃ of conditions, then be rolled under 410～450 ℃ of conditions thickness all be 45～55mm on coating layer aluminium alloy plate and following coating layer aluminium alloy plate; (4) upper and lower surface that covers stamen layer cast panel after the erosion of upper and lower coating layer aluminium alloy plate is washed is carried out seam; (5) alloy sheets after the seam is rolled into the blank that thickness is 8.0 ± 0.2mm under 430～480 ℃ condition; (6) blank is batched at room temperature cold rolling; (7) cold rollingly make behind the work in-process that process annealing 8 ± 0.5h is cooled to room temperature again under 500 ± 10 ℃ of conditions, it is thick to be rolled into 0.6～1.6mm afterwards, shears through finishing, biserial, promptly obtains novel composite aluminium alloy plates.
4, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3 is characterized in that being used in the step () make the aluminium alloy ingot bar melting under 710～780 ℃ of conditions respectively of coating layer, sandwich layer and following coating layer.
5, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3 is characterized in that step (two) casts cast panel under 710～730 ℃ of conditions.
6, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3 is characterized in that the cross-sectional dimension of cast panel in the step (two) is 300mm * 1370mm, 300mm * 1320mm or 300mm * 1240mm.
7, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3, it is characterized in that cast panel heats 7h under 500 ℃ of conditions in the step (three), then be rolled under 420～440 ℃ of conditions thickness all be 47～54mm on coating layer aluminium alloy plate and following coating layer aluminium alloy plate.
8, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3 is characterized in that the alloy sheets after the seam is rolled into the blank that thickness is 8.0mm in the step (five) under 440～470 ℃ condition.
9, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3, it is thick to it is characterized in that in the step (seven) after the process annealing that composite aluminium alloy plates is rolled into 0.8～1.4mm.
10, the preparation method of a kind of novel composite aluminium alloy plates according to claim 3, when it is characterized in that step (four) seam weld seam be full weld and can not deflection on the sandwich layer cast panel.
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| CN100589892C (en) * | 2008-03-26 | 2010-02-17 | 哈尔滨工业大学 | Method for manufacturing ultra-fine crystal magnesium/titanium layered polystyrene-plywood laminate |
| CN101885001A (en) * | 2010-07-15 | 2010-11-17 | 徐州财发铝热传输有限公司 | Continuous cast-rolling method of aluminum/aluminum composite boards |
| CN101530860B (en) * | 2009-04-13 | 2011-05-04 | 西安建筑科技大学 | Method for preparing aluminum-magnesium ultrafine crystal composite plate with multilayer structure |
| CN102166855A (en) * | 2011-04-08 | 2011-08-31 | 东北轻合金有限责任公司 | Manufacture method of aluminum alloy composite plate for tank body of railway tanker |
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| JP4475617B2 (en) * | 2000-07-05 | 2010-06-09 | 住友軽金属工業株式会社 | Aluminum alloy clad material for heat exchangers with excellent corrosion resistance |
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