CN103537483A - Method for manufacturing copper and aluminum composite strips and composite strip continuous casting device - Google Patents
Method for manufacturing copper and aluminum composite strips and composite strip continuous casting device Download PDFInfo
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- CN103537483A CN103537483A CN201310485332.9A CN201310485332A CN103537483A CN 103537483 A CN103537483 A CN 103537483A CN 201310485332 A CN201310485332 A CN 201310485332A CN 103537483 A CN103537483 A CN 103537483A
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Abstract
The invention discloses a method for manufacturing copper and aluminum composite strips and a composite strip continuous casting device. The method includes steps of 1), removing surface impurities of aluminum ingots, and then smelting the aluminum ingots under the condition that the temperature ranges from 680 DEG C to 780 DEG C to form molten aluminum; 2), manufacturing the molten aluminum obtained in the step 1) into semi-solid slurry; 3), pouring the slurry obtained in the step 2) onto preheated copper plates and rolling the copper plates to obtain the copper and aluminum composite strips. The method for manufacturing the copper and aluminum composite strips and the composite strip continuous casting device have the advantages that the molten aluminum is manufactured into the semi-solid slurry at first, then the semi-solid slurry is metallurgically composited with solid copper under a pressure condition, formed bonding interface layers are thin, and the thickness of each bonding interface layer is smaller than 30 micrometers, so that problems of thick bonding interface layers and low strength of composite plates when molten aluminum is directly composited with copper plates can be solved, the metallurgical bonding quality of the copper and aluminum composite strips can be obviously enhanced, the strength of the copper and aluminum composite strips can be effectively improved, and the copper and aluminum composite strips can be produced continuously.
Description
Technical field
The invention belongs to composite board technical field, be specifically related to a kind of preparation method of copper-aluminum composite board band, also relate to a kind of complex plate strip casting apparatus simultaneously.
Background technology
Copper-aluminum composite board is a kind of board that two kinds of metal composite of copper and aluminium are formed, and has both had high-termal conductivity and the electric conductivity of copper, has again the light weight of aluminium, the advantage such as cheap, generally for fields such as electronics, electric power, metallurgical equipment, machinery, automobiles.The liquid-solid composite algorithms such as at present, rolling is compound Gu the method for production of copper aluminum composite panel belt mainly contains, compound, the solid-composite algorithm such as extruding-drawing is compound, Diffusion Welding is compound of exploding and core-filled and continuously casted method, Continuous Casting with Dual Crystallizer method.Gu-Gu the technique of composite algorithm is generally relatively backward, and yield rate is low, and quality is unstable, is not suitable for continuous large-scale and produces, and therefore liquid-solid composite algorithm becomes the emphasis of research; But, liquid-solid composite algorithm is directly undertaken compound by aluminium liquid and copper coin, can produce very thick combination interface layer, combination interface layer is thicker, and intermetallic compound is more, and the intensity of complex plate strip is lower, therefore directly aluminium liquid and copper coin are carried out compound, the combination interface layer forming is thicker, and composite plate intensity is lower, can not meet the requirement of use.
Summary of the invention
The preparation method who the object of this invention is to provide a kind of copper-aluminum composite board band, has solved directly aluminium liquid and copper coin has been carried out to the problem that combination interface layer is thicker, composite plate intensity is low that compound tense causes.
Second object of the present invention is to provide a kind of complex plate strip casting apparatus of realizing above-mentioned preparation method.
In order to realize above object, the technical solution adopted in the present invention is: a kind of preparation method of copper-aluminum composite board band, comprises the following steps:
1) aluminium ingot is removed after surface impurity, under 680～780 ℃ of conditions, carried out melting, form aluminium liquid;
2) step 1) gained aluminium liquid is made to semi-solid slurry;
3) by step 2) gained slurry is cast on the copper coin after preheating, and rolling, obtains.
The temperature of preheating described in step 3) is 300～600 ℃.The object of copper coin being carried out to preheating is the temperature difference between copper aluminium while reducing cast; If the preheat temperature of copper coin is too low, do not reach the effect of preheating; Ruo Taigao, can cause surface oxidation serious, hinders diffusion, is unfavorable for metallurgical binding.
Copper coin described in step 3) is process surface treatment before preheating.
Described surface treatment is to make copper coin pass through successively polishing, alkali cleaning, washing, pickling, washing, alcohol cleaning treatment.
The roll drafts of rolling described in step 3) is 20%～50%.
The speed of rolling described in step 3) is 50～100mm/min.
A kind of complex plate strip casting apparatus, comprise crucible, vibration pulping device, heat conduction roller and rolling device, the bottom of described crucible is provided with liquid outlet, and this liquid outlet is connected with the liquid-inlet of vibration pulping device, and the slurry outlet of described vibration pulping device is to Continuous Casting Square to inclination; Described heat conduction roller is positioned at the below of the slurry outlet of vibration pulping device, for making base plate access carry out the slurry of the slurry outlet of self-excited oscillation pulping device; Described heat conduction roller and rolling device are along Continuous Casting Square to being arranged in order.
In described crucible, be provided with and control the stopper that liquid outlet opens and closes.
The preparation method of copper-aluminum composite board band of the present invention, aluminium liquid is first made to semi-solid slurry, under stress metallurgical compound with In Crystal Solid Copper again, reduce the pouring temperature of aluminium liquid, carry out semisolid cast, effectively reduce the temperature difference between copper aluminium, the diffusion of copper aluminium slowly, easily form copper aluminium solid solution, finally form metallurgical binding and do not form intermetallic compound; Required time when shortening copper aluminium solid/liquid interfaces and reaching thermal balance, the heat that copper coin is warmed up to the required absorption of thermal equilibrium temperature reduces, the energy that aluminium liquid discharges when solidifying reduces, reduce copper aluminium diffusion rate and shorten diffusion time, combination interface layer easily forms solid solution, the combination interface layer forming is thinner, and thickness is lower than 30 μ m; Solved directly aluminium liquid and copper coin have been carried out to the problem that combination interface layer is thicker, composite plate intensity is low that compound tense causes; Greatly improve the intensity of complex plate strip; In addition, semisolid metal processing technology can integrate with mutually with nearly clean process technology, can produce the complex parts blank of high-quality, this precision, satisfactory mechanical property.
The preparation method of copper-aluminum composite board band of the present invention, has solved the problems such as copper aluminium laminating production environment is poor, technological process is long, efficiency is low, has obviously improved the metallurgical binding quality of copper-aluminum composite board band; Effectively improve the intensity of copper-aluminum composite board band, and realize continuously and producing.
Complex plate strip casting apparatus of the present invention, adopt vibration pulping device and traditional casting apparatus to be coupled, prepare fast satisfactory high-quality semi solid slurry, semisolid-solid-state metal composite and the continuous production of complex plate strip have been realized, greatly improved the production efficiency of complex plate strip, simple to operation, be applicable to large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the complex plate strip casting apparatus of embodiment 1.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further illustrated.
The preparation method of the copper-aluminum composite board band of the present embodiment, comprises the following steps:
1) aluminium ingot is removed after surface impurity, under 680 ℃ of conditions, carried out melting, form aluminium liquid;
2) step 1) gained aluminium liquid is made to semi-solid slurry;
3) by the preheating under 300 ℃ of conditions of surface treated copper coin, by step 2) gained slurry is cast on the copper coin after preheating, the roll rolling that is 50% through drafts, mill speed is 75mm/min, obtains.
The complex plate strip casting apparatus of realizing above-mentioned preparation method of the present embodiment, as shown in Figure 1, comprise crucible 1, vibration pulping device 9, heat conduction roller 8 and rolling device 5, the bottom of described crucible 1 is provided with liquid outlet, this liquid outlet is connected with the liquid-inlet of vibration pulping device 9, and the slurry outlet of described vibration pulping device 9 is to Continuous Casting Square to inclination; Described heat conduction roller 8 is positioned at the below of the slurry outlet of vibration pulping device 9, for making base plate access carry out the slurry 4 of the slurry outlet of self-excited oscillation pulping device; Described heat conduction roller 8 and rolling device 5 are along Continuous Casting Square to being arranged in order.In described crucible 1, be provided with and control the stopper 2 that liquid outlet opens and closes.
The complex plate strip casting apparatus of the present embodiment, during work, as shown in Figure 1, puts into crucible 1 by the aluminium ingot of removing surface impurity, under 680 ℃ of conditions, carries out melting, forms aluminium liquid 3; Open stopper 2, aluminium liquid 3 flows into vibration pulping device 10, forms semi-solid slurry 4; Slurries by vibration pulping device 4 export, and semi-solid slurry 4 is cast on the copper coin 7 after preheat roll 8 preheatings, after rolling device 5 rollings, pull out, and obtain copper-aluminum composite board band 6.
The preparation method of the copper-aluminum composite board band of the present embodiment, comprises the following steps:
1) aluminium ingot is removed after surface impurity, under 730 ℃ of conditions, carried out melting, form aluminium liquid;
2) step 1) gained aluminium liquid is made to semi-solid slurry;
3) by the preheating under 600 ℃ of conditions of surface treated copper coin, by step 2) gained slurry is cast on the copper coin after preheating, the roll rolling that is 35% through drafts, mill speed is 100mm/min, obtains.
The complex plate strip casting apparatus of realizing above-mentioned preparation method of the present embodiment is with embodiment 1.
The preparation method of the copper-aluminum composite board band of the present embodiment, comprises the following steps:
1) aluminium ingot is removed after surface impurity, under 780 ℃ of conditions, carried out melting, form aluminium liquid;
2) step 1) gained aluminium liquid is made to semi-solid slurry;
3) by the preheating under 450 ℃ of conditions of surface treated copper coin, by step 2) gained slurry is cast on the copper coin after preheating, the roll rolling that is 20% through drafts, mill speed is 50mm/min, obtains.
The complex plate strip casting apparatus of realizing above-mentioned preparation method of the present embodiment is with embodiment 1.
Experimental example
This experimental example detects embodiment 1～3 gained copper-aluminum composite board band, and compares with comparative example, and result is as shown in table 1.Wherein, comparative example is for directly to carry out compound method gained copper-aluminum composite board by aluminium liquid and copper coin.
Table 1 embodiment 1～3 gained copper-aluminum composite board band testing result
| Project | | Embodiment | 1 | |
|
Comparative example |
| Combination interface layer thickness, μ m | ESEM | 8 | 18 | 24 | 135 |
| Complex plate strip bond strength, MPa | Peel strength | 162 | 168 | 164 | 151 |
Claims (8)
1. a preparation method for copper-aluminum composite board band, is characterized in that: comprise the following steps:
1) aluminium ingot is removed after surface impurity, under 680～780 ℃ of conditions, carried out melting, form aluminium liquid;
2) step 1) gained aluminium liquid is made to semi-solid slurry;
3) by step 2) gained slurry is cast on the copper coin after preheating, and rolling, obtains.
2. the preparation method of copper-aluminum composite board band according to claim 1, is characterized in that: the temperature of preheating described in step 3) is 300～600 ℃.
3. the preparation method of copper-aluminum composite board band according to claim 1, is characterized in that: copper coin described in step 3) is process surface treatment before preheating.
4. the preparation method of copper-aluminum composite board band according to claim 3, is characterized in that: described surface treatment is to make copper coin pass through successively polishing, alkali cleaning, washing, pickling, washing, alcohol cleaning treatment.
5. the preparation method of copper-aluminum composite board band according to claim 1, is characterized in that: the roll drafts of rolling described in step 3) is 20%～50%.
6. the preparation method of copper-aluminum composite board band according to claim 1, is characterized in that: the speed of rolling described in step 3) is 50～100mm/min.
7. a complex plate strip casting apparatus, it is characterized in that: comprise crucible, vibration pulping device, heat conduction roller and rolling device, the bottom of described crucible is provided with liquid outlet, this liquid outlet is connected with the liquid-inlet of vibration pulping device, and the slurry outlet of described vibration pulping device is to Continuous Casting Square to inclination; Described heat conduction roller is positioned at the below of the slurry outlet of vibration pulping device, for making base plate access carry out the slurry of the slurry outlet of self-excited oscillation pulping device; Described heat conduction roller and rolling device are along Continuous Casting Square to being arranged in order.
8. complex plate strip casting apparatus according to claim 7, is characterized in that: in described crucible, be provided with and control the stopper that liquid outlet opens and closes.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525564A (en) * | 2014-11-08 | 2015-04-22 | 广东省工业技术研究院(广州有色金属研究院) | Three-layer metal clad plate short process roll forming device and method |
| CN106601324A (en) * | 2016-12-07 | 2017-04-26 | 烟台孚信达双金属股份有限公司 | High-bonding strength copper-aluminum composite conductive material and preparation method thereof |
| CN107282915A (en) * | 2017-07-06 | 2017-10-24 | 兰州理工大学 | The semisolid printing forming method of aluminium base ply-metal |
| CN109014089A (en) * | 2018-06-15 | 2018-12-18 | 王会智 | A kind of cast aluminium complex plate strip foil production equipment and production method |
| CN110190422A (en) * | 2019-05-28 | 2019-08-30 | 浙江彼岸电气有限公司 | Wire clamp of copper-aluminum apparatus and its manufacture craft |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
| CN113026070A (en) * | 2021-03-22 | 2021-06-25 | 刘飞 | Production method for copper-aluminum high-temperature compounding |
| CN114101332A (en) * | 2021-11-19 | 2022-03-01 | 河南铜创有色金属科技有限公司 | Method and device for manufacturing copper-aluminum composite strip by using solid copper and liquid aluminum |
| CN114871417A (en) * | 2022-02-24 | 2022-08-09 | 兰州理工大学 | Rheological printing casting-rolling system and process for bimetal composite board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104525564B (en) * | 2014-11-08 | 2016-06-29 | 广东省工业技术研究院(广州有色金属研究院) | The short route roll former of a kind of three-layer metal composite plate and method |
| CN106601324A (en) * | 2016-12-07 | 2017-04-26 | 烟台孚信达双金属股份有限公司 | High-bonding strength copper-aluminum composite conductive material and preparation method thereof |
| CN107282915A (en) * | 2017-07-06 | 2017-10-24 | 兰州理工大学 | The semisolid printing forming method of aluminium base ply-metal |
| CN109014089A (en) * | 2018-06-15 | 2018-12-18 | 王会智 | A kind of cast aluminium complex plate strip foil production equipment and production method |
| CN110190422A (en) * | 2019-05-28 | 2019-08-30 | 浙江彼岸电气有限公司 | Wire clamp of copper-aluminum apparatus and its manufacture craft |
| CN111282991A (en) * | 2020-02-21 | 2020-06-16 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
| CN114653752A (en) * | 2020-02-21 | 2022-06-24 | 洛阳铜一金属材料发展有限公司 | Preparation method of copper-aluminum composite plate strip with thick copper layer proportion |
| CN113026070A (en) * | 2021-03-22 | 2021-06-25 | 刘飞 | Production method for copper-aluminum high-temperature compounding |
| CN114101332A (en) * | 2021-11-19 | 2022-03-01 | 河南铜创有色金属科技有限公司 | Method and device for manufacturing copper-aluminum composite strip by using solid copper and liquid aluminum |
| CN114871417A (en) * | 2022-02-24 | 2022-08-09 | 兰州理工大学 | Rheological printing casting-rolling system and process for bimetal composite board |
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