CN111151575A - Compounding equipment and compounding method for aluminum-based composite plate strip - Google Patents
Compounding equipment and compounding method for aluminum-based composite plate strip Download PDFInfo
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- CN111151575A CN111151575A CN201811317400.XA CN201811317400A CN111151575A CN 111151575 A CN111151575 A CN 111151575A CN 201811317400 A CN201811317400 A CN 201811317400A CN 111151575 A CN111151575 A CN 111151575A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/466—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a non-continuous process, i.e. the cast being cut before rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/143—Plants for continuous casting for horizontal casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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Abstract
The invention relates to the technical field of metal composite material continuous casting, in particular to a compounding device and a compounding method for an aluminum-based composite plate strip. The compounding equipment of the aluminum-based composite plate strip comprises a core material horizontal continuous casting device for casting the core material plate strip and a cladding material compounding device for forming a cladding material layer on the upper surface and/or the lower surface of the core material plate strip. According to the compounding equipment and the compounding method for the aluminum-based composite plate strip, the core material casting and rolling process and the cladding material compounding process are combined to form continuous production, so that the process is simplified, and the efficiency is improved; the compound equipment can be suitable for various products, and the utilization rate of the equipment is improved; the composite method of the invention firstly sprays cladding material molten metal on the upper surface and/or the lower surface of the core material plate strip to solidify a thin layer of the cladding material layer, then the cladding material layer is completely solidified through a water-cooled crystallizer, and finally the cladding material layer is rolled through a roller, thereby improving the quality of an interface diffusion layer and being easy to control the thickness of the cladding material layer.
Description
Technical Field
The invention relates to the technical field of metal composite material continuous casting, in particular to a compounding device and a compounding method for an aluminum-based composite plate strip.
Background
The lightening of the automobile becomes an important mark and development trend of modern automobiles in the 21 st century, and is generally regarded by all countries in the world. The self weight of the automobile is reduced by 10%, the oil consumption can be reduced by 3-5%, and the exhaust emission can be reduced in the same proportion. Increasing the degree of aluminization of automotive materials is one of the major approaches to achieving weight reduction of automobiles. The automobile radiator uses the composite aluminum foil to replace copper foil, the weight can be reduced by 37-45%, the processing cost of the composite aluminum foil and the copper foil is equivalent, and the aluminizing rate of parts of heat exchangers such as automobile radiators, air coolers, condensers, evaporators and the like in developed countries reaches more than 95%. The annual demand of three-layer composite aluminum foil for world automobiles reaches about 100 ten thousand tons; meanwhile, the composite aluminum foil has wide application in the fields of aerospace, energy environmental protection, petrochemical industry, transportation, electronic information, national defense and military industry, daily life and the like, and is a key development direction of the current aluminum-based composite material. Therefore, the composite technology for improving the aluminum matrix composite material has great market prospect and social and economic benefits.
The aluminum-based composite foil is formed by compounding a core material Al-Mn-X alloy and a coating material Al-Si-X alloy, and the aluminum-based composite foil is formed by rolling a composite plate strip, wherein the structure of the aluminum-based composite foil is shown in figure 1. The compounding method of the aluminum-based composite plate strip mainly comprises 3 types of hot rolling compounding, cold rolling compounding and reverse solidification.
At present, the most widely adopted method for producing the multilayer aluminum-based composite plate strip in China is hot rolling compounding, such as northeast light alloy processing factory, Gelanges aluminum industry (Shanghai) company, and the like, which adopt the method to produce the aluminum alloy composite brazing strip for the automobile heat exchanger. The composite process is approximately as shown in figure 2, but the method has the defects of long process, low production efficiency, low yield, high energy consumption, large investment and the like. As shown in patent CN102554585B, the production process of the composite plate strip mainly includes: casting an aluminum alloy ingot, homogenizing, milling the surface, welding, heating, hot rolling and cold rolling to obtain a cold-rolled material with a certain thickness.
The cold rolling compounding has the advantages of high production efficiency, stable product performance and the like, is suitable for high-precision multilayer metal compounding rolling, can fully exert the efficiency of a rolling mill by starting from cold rolling foil blank production and coiling rolling, but has high equipment requirement, large investment and long process. As shown in patent CN107377619A, the surface treatment of the substrate and the cladding, and the cold rolling and compounding with large rolling force and large reduction ratio have high requirements for equipment.
The reverse solidification method is a process method which passes a core material (generally a metal strip) through a cladding material metal melt, the cladding material metal melt is attached on the surface of the core material to be solidified, the core material and the cladding material metal melt form metallurgical bonding at an interface, the thickness of the cladding material metal solidified on the surface of the core material is gradually increased along with the continuous movement of the core material until the core material metal melt completely passes through the cladding material metal melt, then the formed cladding material is rolled by a pair of rollers, the purposes of leveling the surface and controlling the thickness of the cladding material are achieved, and finally the required cladding material is obtained, and the process method is mainly used for continuously forming the cladding material, such as patent CN 1050157C. When the cladding material is formed by adopting a reverse solidification method, the problems that the core material is soaked in a cladding material metal melt for a long time and is easily melted or fused exist, besides, the problems that the metal thickness of the cladding material is difficult to stably control, the correct control and reasonable matching of preparation process parameters are difficult, the thickness and the interface quality (such as intermetallic compounds are easily generated) of an interface diffusion layer are difficult to control, the metal surface quality of the cladding material is poor and the like exist, meanwhile, a core material plate strip needs to be manufactured independently, and the equipment investment is increased.
Therefore, there is an urgent need to develop a novel apparatus and method for continuous casting high-quality coating material with short process, high efficiency, energy saving, consumption reduction, environmental protection, and low cost, especially suitable for large-size coating.
Disclosure of Invention
The invention aims to provide a device and a method for compounding an aluminum-based composite plate strip, aiming at the defects in the prior art.
The object of the invention can be achieved by the following technical measures:
the invention provides a compounding device of an aluminum-based composite plate strip, which comprises a core material horizontal continuous casting device for casting the core material plate strip and a clad material compounding device for forming a clad material layer on the upper surface and/or the lower surface of the core material plate strip;
the horizontal continuous casting device of core material includes: the device comprises a first holding furnace for storing core metal liquid, a first launder communicated with the first holding furnace, a water-cooling roller arranged at the outlet end of the first launder, and a first transmission device for conveying a core plate strip to the cladding material compounding device;
cladding material set composite includes: the second heat preservation furnace is used for storing the upper cladding material molten metal, the second runner communicated with the second heat preservation furnace, the upper surface of the core material plate strip is arranged, the upper cladding material pouring gate is communicated with the bottom of the second runner, the third heat preservation furnace is used for storing the lower cladding material molten metal, the third runner communicated with the third heat preservation furnace, the lower surface of the core material plate strip is arranged, the lower cladding material pouring gate is communicated with the bottom of the third runner, the water cooling furnaces are respectively arranged on the upper surface and the lower surface of the core material plate strip, and the composite material roller is used for rolling the composite material plate strip.
Preferably, the clad composite apparatus further comprises: the secondary cooling device is used for cooling the rolled composite plate strip, and the second transmission device is used for conveying the composite plate strip to the coiling machine.
Preferably, the outer surfaces of the first holding furnace and the first launder, the outer surfaces of the second holding furnace and the second launder, and the outer surfaces of the third holding furnace and the third launder are provided with heaters.
Preferably, the second holding furnace and the third holding furnace are formed by separating one holding furnace by a castable isolating layer.
Preferably, the first holding furnace or the second holding furnace or the third holding furnace is a tundish.
The invention also provides a compounding method of the aluminum-based composite plate strip, which comprises the following steps:
casting and rolling the core metal liquid to prepare an aluminum-based core material plate strip;
spraying cladding material metal liquid on the upper surface and/or the lower surface of the core material plate strip to form a cladding material layer on the upper surface and/or the lower surface of the core material plate strip;
cooling the cladding material layer on the upper surface and/or the lower surface of the core material plate belt by adopting a water-cooled crystallizer to form an aluminum-based composite plate belt;
and rolling the aluminum-based composite plate strip by using a roller.
Preferably, the compounding method further comprises:
and cooling the rolled aluminum-based composite plate strip.
Preferably, in the step of preparing the core material plate strip, a water-cooling roller is adopted to cast and roll the core material metal liquid, wherein the temperature of the core material metal liquid is 700-760 ℃, the casting and rolling speed of the water-cooling roller is 600-800 mm/min, the temperature of the cooling water is 20-30 ℃, and the pressure of the cooling water is 0.6-0.8 MPa.
Preferably, in the step of spraying the cladding material molten metal, the temperature of the cladding material molten metal is 680-740 ℃, the spraying pressure is 0.4-0.6 MPa, and the spraying flow rate is 0.18-1.00L/min.
Preferably, in the step of cooling the clad layer, the temperature of the cooling water in the water-cooled crystallizer is 20 ℃ to 30 ℃, and the pressure of the cooling water is 0.6MPa to 0.8 MPa.
According to the compounding equipment and the compounding method for the aluminum-based composite plate strip, the core material casting and rolling process and the cladding material compounding process are combined to form continuous production, so that the process is simplified, and the efficiency is improved; the composite equipment can adapt to the upper surface coating of the core material plate belt, the lower surface coating of the core material plate belt and the coating of the same or different materials on the upper surface and the lower surface of the core material plate belt, so that the utilization rate of the equipment is improved; the composite method of the invention firstly sprays cladding material molten metal on the upper surface and/or the lower surface of the core material plate strip to solidify a thin layer of the cladding material layer, then the cladding material layer is completely solidified through a water-cooled crystallizer, and finally the cladding material layer is rolled through a roller, thereby improving the quality of an interface diffusion layer and being easy to control the thickness of the cladding material layer.
Drawings
Fig. 1 is a schematic cross-sectional view of a prior art aluminum-based composite foil.
Fig. 2 is a process diagram of compounding a multilayer aluminum-based composite plate strip in the prior art.
Fig. 3 is a schematic structural diagram of a compounding device for an aluminum-based composite plate strip according to an embodiment of the present invention.
FIG. 4 is a schematic view of a preferred embodiment of the second holding furnace and the third holding furnace in the compound apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to make the description of the present disclosure more complete and complete, the following description is given for illustrative purposes with respect to the embodiments and examples of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.
Referring to fig. 3, an embodiment of the present invention provides a composite apparatus for an aluminum-based composite plate strip, where the composite apparatus includes: the core material horizontal continuous casting device 10 is used for casting a core material plate strip, and the clad material compounding device 20 is used for forming a clad material layer on the upper surface and/or the lower surface of the core material plate strip.
Wherein, the core material horizontal continuous casting device 10 includes: the core material metal liquid is conveyed to the water-cooling roller 103 through the first launder 102 in the first heat preservation furnace 101 to cast and roll the core material plate strip 100, and the formed core material plate strip 100 is conveyed to the coating material compounding device 20 through the first transmission device 104 to be compounded.
Wherein, cladding material set composite 20 includes: a second holding furnace 2011, a third holding furnace 2012, a second runner 202, a third runner 203, an upper cladding material runner 204, a lower cladding material runner 205, two water-cooled crystallizers 206, a composite material roller 207, a secondary cooling device 208 and a second transmission device 209, wherein the second holding furnace 2011 and the third holding furnace 2012 are respectively used for storing upper cladding material molten metal and lower cladding material molten metal, the second runner 202 is arranged below the second holding furnace 2011 and communicated with the second holding furnace 2011, the outlet end of the second runner 202 is connected with the upper cladding material runner 204, the third runner 203 is arranged below the third holding furnace 2012 and communicated with the third holding furnace 2012, the outlet end of the third runner 203 is connected with the lower cladding material runner 205, the upper cladding material runner 204 and the lower cladding material runner 205 are respectively arranged on the upper surface and the lower surface of the core material strip 100 and are used for spraying the cladding material molten metal to the surface of the core material strip 100, the two water-cooled crystallizers 206 are respectively arranged on the upper surface and the lower surface of the core material strip 100, and are respectively adjacent to and adjacent to the upper clad material gate 204 and the lower clad material gate 205, and are configured to cool the clad material molten metal sprayed onto the surface of the core material plate strip 100 to form the composite plate strip 200, the composite material roller 207 is configured to roll the composite plate strip 200 to adjust the thickness of the clad material layer, and the rolled composite plate strip 200 is further cooled by the secondary cooling device 208 and then is conveyed to a coiler (not shown) by the second transmission device 209.
In the present embodiment, the core material sheet strip 100 is conveyed in the horizontal direction, the water-cooled roll 103, the first transmission device 104, the upper and lower sheathing material gates 204 and 205, the two water-cooled molds 206, the composite material roll 207, the secondary cooling device 208, and the second transmission device 209 are arranged in this order along the conveying direction of the core material sheet strip 100 on the same horizontal center line, and the upper and lower sheathing material gates 204 and 205 are arranged to be opposed to each other on the upper and lower surface sides of the core material sheet strip 100, and the two water-cooled molds 206 are arranged to be opposed to each other on the upper and lower surface sides of the core material sheet strip 100.
In a preferred embodiment, referring to fig. 4, the second holding furnace 2011 and the third holding furnace 2012 are configured as an integral cladding holding furnace 201, an inner cavity of the cladding holding furnace 201 is divided into a first chamber 201a and a second chamber 201b by a castable isolation layer 2013, the first chamber 201a and the second chamber 201b are used for storing upper cladding metal liquid and lower cladding metal liquid, respectively, and the second runner 202 and the third runner 203 are respectively communicated with the first chamber 201a and the second chamber 201 b. When the upper cladding material and the lower cladding material are made of the same material, the castable insulation layer 2013 can be detached.
In a preferred embodiment, the heaters 30 are disposed on the outer surfaces of the first holding furnace 101 and the first launder 102, the outer surfaces of the second holding furnace 2011 and the second launder 202, and the outer surfaces of the third holding furnace 2012 and the third launder 203.
In this embodiment, the first holding furnace 101, the second holding furnace 2011, the third holding furnace 2012, the heater 30, the upper clad gate 204, the lower clad gate 205, the water-cooled mold 206 and other non-rotating devices are all fixed to a fixed bracket (not shown).
In a preferred embodiment, the first holding furnace 101, the second holding furnace 2011 and the third holding furnace 2012 are all tundishes.
In this embodiment, both the upper and lower sheathing material gates 204 and 205 can be used independently, and only one of the upper and lower water-cooled crystallizers 206 can be opened, so that the compound equipment can be adapted to the upper surface sheathing of the core material plate strip, the lower surface sheathing of the core material plate strip, and the upper and lower surfaces of the core material plate strip with the same or different materials to coat various products.
The embodiment of the invention also provides a composite method of the aluminum-based composite plate strip, which is used for producing the aluminum-based composite plate strip by using the composite equipment, and specifically, the composite method comprises the following steps:
s101, casting and rolling the core metal liquid to prepare the aluminum-based core material plate strip.
S102, spraying cladding material molten metal on the upper surface and/or the lower surface of the core material plate strip to form a cladding material layer on the upper surface and/or the lower surface of the core material plate strip;
and S103, cooling the cladding material layer on the upper surface and/or the lower surface of the core material plate belt by using a water-cooled crystallizer to form the aluminum-based composite plate belt.
And S104, rolling the aluminum-based composite plate strip by using a roller.
In step S101, a water-cooled roller is used for casting and rolling the core metal liquid, wherein the temperature of the core metal liquid is 700-760 ℃, the casting and rolling speed of the water-cooled roller is 600-800 mm/min, the temperature of cooling water is 20-30 ℃, and the pressure of the cooling water is 0.6-0.8 MPa.
Specifically, first, the core metal liquid (core melt) is prepared from an aluminum alloy, the aluminum alloy is melted, alloyed, degassed, refined, filtered, and transferred to the first heat-preserving furnace 101, and the first heat-preserving furnace 101 is filled with an inert gas or a reducing gas to protect the core metal liquid. Specifically, the cleaned aluminum alloy raw material is placed into a core material smelting furnace, after the aluminum ingot is heated to 700-760 ℃, the temperature is kept after the aluminum ingot is completely melted into aluminum water, a stirrer is started, intermediate alloy blending components are added, after the aluminum ingot is smelted for 0.5-2 hours, the stirring is stopped, the aluminum liquid is transferred into a first heat preservation furnace 101 which is preheated to 700-760 ℃ through a launder or a vacuum ladle after the slag is refined, removed from the furnace, degassed and kept stand. Then, the first runner 102 is opened, the water-cooled roller 103 is started, and the core material plate strip 100 is cast and rolled, wherein the parameters of the water-cooled roller 103 are as follows: the casting and rolling speed is 600 mm/min-800 mm/min, the temperature of cooling water is 20-30 ℃, and the pressure of the cooling water is 0.6-0.8 MPa; the first transmission device 104 is started to convey the cast-rolled core material plate strip 100 to the clad material compounding device 20 to prepare a compound plate strip. In a preferred embodiment, a flux aid and a deoxidizer are added to the second and third flow grooves 202 and 203.
In step S102, the temperature of the cladding material molten metal is 680-740 ℃, the injection pressure is 0.4-0.6 MPa, and the injection flow is 0.18-1.00L/min.
Specifically, cleaned upper cladding material raw materials and lower cladding material raw materials are respectively placed into a cladding material smelting furnace, heat preservation is carried out after heating to 680-740 ℃, a stirrer is started, intermediate alloy blending components are added, after smelting is carried out for 0.5-2 hours, stirring is stopped, refining, slagging-off, degassing and standing are carried out in the furnace, and aluminum liquid is transferred into a second holding furnace 2011 and a third holding furnace 2012 which are preheated to 680-740 ℃ through a launder or a vacuum ladle. Then, the second runner 202 and the third runner 203 are respectively opened, the upper cladding material molten metal and the lower cladding material molten metal are respectively conveyed to the upper cladding material gate 204 and the lower cladding material gate 205, so as to respectively and uniformly spray the upper cladding material molten metal and the lower cladding material molten metal on the upper surface and the lower surface of the core material plate strip 100, the moment when the cladding material molten metal is deposited on the surface of the core material plate strip 100 is forcibly cooled, the thin layer solidification of the cladding material molten metal on the surface of the core material plate strip 100 is realized, and a cladding material layer which is not completely solidified is formed on the surface of the core material plate strip 100. The spraying pressure and the spraying flow of the cladding material molten metal are controlled, and the thickness of the interface diffusion layer can be reasonably controlled. The thin layer is solidified at the moment of deposition, and the interface quality is improved.
In step 103, the temperature of the cooling water in the water-cooled crystallizer is 20 ℃ to 30 ℃, and the pressure of the cooling water is 0.6MPa to 0.8 MPa. Specifically, the unsolidified cladding metal liquid in the cladding layer immediately enters the water-cooled crystallizer 206 to be completely solidified with the core material plate strip 100 with the thin-layer cladding metal on the surface, so as to form the composite plate strip 200 with the metallurgical bonding interface.
In step S104, the composite strip 200 is rolled to control the thickness of the composite strip 200, for example, to 10.0 ± 0.2 mm.
Further, after step S104, the following steps are also included:
and S105, cooling the rolled aluminum-based composite plate strip.
Example 1
The embodiment provides a compounding method of a double-sided compounded 4045/3003/4045 aluminum-based composite board, wherein the thickness of a finished product is 10.0 +/-0.2 mm, the width of the finished product is 1220mm, a core material is AA3003 aluminum alloy, a coating material is AA4045, and the coating rate is 10 +/-2%:
1) preparing a material preparation furnace, putting the cleaned raw materials into a core material smelting furnace, heating to 700-760 ℃, then after aluminum ingots are completely melted into molten aluminum, starting a stirrer, adding an intermediate alloy to adjust the components to meet the AA3003 alloy standard, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, and transferring the molten aluminum into a core material melt heat preservation furnace preheated to 700-760 ℃ through a launder or a vacuum ladle. Putting the cleaned raw materials into a coating material smelting furnace, heating to 680-740 ℃, preserving heat, starting a stirrer, adding an intermediate alloy, blending components of the intermediate alloy to meet the AA4045 alloy standard, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, transferring aluminum liquid into a second holding furnace 2011 and a third holding furnace 2012 which are preheated to 680-740 ℃ through a launder or a vacuum ladle, wherein a casting material layer for partitioning between the second holding furnace 2011 and the third holding furnace 2012 is opened in advance, and coating material metal liquid is communicated in the second holding furnace 2011 and the third holding furnace 2012.
2) Casting and rolling the core material, opening a core material discharge hole to cast AA3003, starting a water-cooling roller 103, adjusting the casting and rolling speed to 600-800 mm/min, the cooling water temperature to 20-30 ℃, and the cooling water pressure to 0.6-0.8 MPa, and casting and rolling the core material; and (3) starting the first transmission device 104, adjusting the vertical plate, keeping the thickness of the finished core material to be 8.0 +/-0.2 mm and the width to be 1220 +/-20 mm, guiding the core material to sequentially pass through an upper cladding material pouring gate 204 and a lower cladding material pouring gate 205, a water-cooled crystallizer 206 positioned on the upper surface of the core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100 after the core material is cast and rolled into a continuous plate strip, and then conveying the continuous plate strip to a coiling machine for coiling through a composite material roller 207 through a second transmission device 209.
3) Coating materials are compounded, after a core material is stably cast and rolled into a coil, a brazing flux aid and a deoxidizing agent are added into a second runner 202 and a third runner 203 on line, an upper coating material runner 204, a lower coating material runner 205, a water-cooled crystallizer 206 positioned on the upper surface of a core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100 are opened, coating material molten metal AA4045 is uniformly sprayed on the upper surface and the lower surface of the core material plate strip 100, the spraying pressure of the coating material molten metal is controlled to be 0.4-0.6 MPa, the spraying flow rate is controlled to be 0.70-1.00L/min, the cooling water temperature of the cooling water of the two water-cooled crystallizers 206 is controlled to be 20-30 ℃, the cooling water pressure is controlled to be 0.6-0.8 MPa, and; rolling the composite plate strip by a composite material roller 207, keeping the thickness at 10.0 +/-0.2 mm, controlling the plate shape and the surface quality, further cooling the composite plate strip by a secondary cooling device 208, and sending the composite plate strip 200 to a coiling machine for coiling by a second transmission device 209.
4) The finished product is the double-sided composite 4045/3003/4045 aluminum-based composite plate strip 200 with the thickness of 10.0 +/-0.2 mm, the core material of AA3003 aluminum alloy, the coating material of AA4045 and the coating rate of 10 +/-2%.
Example 2
The composite method of the single-sided composite 4343/3003/aluminum-based composite board comprises the following steps of (1) obtaining a finished product with the thickness of 10.0 +/-0.2 mm and the width of 1220mm, wherein the core material is AA3003 aluminum alloy, the coating material is AA4343, and the coating rate is 5 +/-2 percent:
1) preparing a material preparation furnace, putting the cleaned raw materials into a core material smelting furnace, heating to 700-760 ℃, then after aluminum ingots are completely melted into molten aluminum, starting a stirrer, adding an intermediate alloy to adjust the components to meet the AA3003 alloy standard, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, and transferring the molten aluminum into a core material melt heat preservation furnace preheated to 700-760 ℃ through a launder or a vacuum ladle. Putting the cleaned raw materials into a coating material smelting furnace, heating to 680-740 ℃, preserving heat, starting a stirrer, adding an intermediate alloy, blending components of which meet AA4343 alloy standards, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, transferring aluminum liquid into a second holding furnace 2011 preheated to 680-740 ℃ through a launder or a vacuum ladle, wherein castable between the second holding furnace 2011 and a third holding furnace 2012 is closed in advance, and the coating material molten metal is only in the second holding furnace 2011.
2) Casting and rolling the core material, opening a core material discharge hole to cast AA3003, starting a water-cooling roller 103, adjusting the casting and rolling speed to 600-800 mm/min, the cooling water temperature to 20-30 ℃, and the cooling water pressure to 0.6-0.8 MPa, and casting and rolling the core material; and (3) starting the first transmission device 104, adjusting the vertical plate, keeping the thickness of the finished core material to be 9.5 +/-0.2 mm and the width to be 1220 +/-20 mm, guiding the core material to sequentially pass through an upper cladding material pouring gate 204 and a lower cladding material pouring gate 205 after the core material is cast and rolled into a continuous plate strip, a water-cooled crystallizer 206 positioned on the upper surface of the core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100, then passing through a composite material roller 207, and sending to a coiling machine for coiling through a second transmission device 209.
3) Cladding materials are compounded, after a core material is stably cast and rolled into a coil, a brazing flux aid and a deoxidizing agent are added into a second runner 202 and a third runner 203 on line, an upper cladding material sprue 204, a lower cladding material sprue 205, a water-cooled crystallizer 206 positioned on the upper surface of a core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100 are opened, cladding material molten metal AA4343 is uniformly sprayed on the upper surface of the core material plate strip 100, the spraying pressure of the cladding material molten metal is controlled to be 0.4-0.6 MPa, the spraying flow rate is controlled to be 0.18-0.40L/min, the cooling water temperature of the two water-cooled crystallizers 206 is controlled to be 20-30 ℃, the cooling water pressure is controlled to be 0.6-0.8 MPa, and the cladding material molten metal and the core; rolling the composite plate strip by a composite material roller 207, keeping the thickness at 10.0 +/-0.2 mm, controlling the plate shape and the surface quality, further cooling the composite plate strip by a secondary cooling device 208, and sending the composite plate strip 200 to a coiling machine for coiling by a second transmission device 209.
4) The finished product is the single-sided composite 4343/3003/aluminum-based composite plate strip 200 with the thickness of 10.0 +/-0.2 mm and the width of 1220mm, the core material of AA3003 aluminum alloy, the coating material of AA4343 and the coating rate of 5 +/-2%.
Example 3
The composite method of the double-sided composite 4045/3003/7072 aluminum-based composite board comprises the following steps of (1) compounding the finished product with the thickness of 10.0 +/-0.2 mm and the width of 1220mm, wherein the core material is AA3003 aluminum alloy, the upper coating material is AA4045, the coating rate is 10 +/-2%, the lower coating material is AA7072, and the coating rate is 10 +/-2%:
1) preparing a material preparation furnace, putting the cleaned raw materials into a core material smelting furnace, heating to 700-760 ℃, then after aluminum ingots are completely melted into molten aluminum, starting a stirrer, adding an intermediate alloy to adjust the components to meet the AA3003 alloy standard, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, and transferring the molten aluminum into a core material melt heat preservation furnace preheated to 700-760 ℃ through a launder or a vacuum ladle. Putting the cleaned raw materials into an upper cladding material smelting furnace, heating to 680-740 ℃, preserving heat, starting a stirrer, adding an intermediate alloy, blending components of which meet AA4045 alloy standards, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, and transferring aluminum liquid into a second heat preservation furnace 2011 which is preheated to 680-740 ℃ through a launder or a vacuum ladle. Putting the cleaned raw materials into a lower cladding material smelting furnace, heating to 680-740 ℃, preserving heat, starting a stirrer, adding an intermediate alloy, blending components of which accord with AA7072 alloy standards, smelting for 0.5-2 hours, stopping stirring, refining in the furnace, slagging off, degassing, standing, and transferring aluminum liquid into a third heat preservation furnace 2012 preheated to 680-740 ℃ through a launder or a vacuum ladle; pouring materials for separating between the second holding furnace 2011 and the third holding furnace 2012 are separated in advance, and the upper cladding material molten metal and the lower cladding material molten metal respectively enter the second runner 202 and the third runner 203 from the second holding furnace 2011 and the third holding furnace 2012.
2) Casting and rolling the core material, opening a core material discharge hole to cast AA3003, starting a water-cooling roller 103, adjusting the casting and rolling speed to 600-800 mm/min, the cooling water temperature to 20-30 ℃, and the cooling water pressure to 0.6-0.8 MPa, and casting and rolling the core material; and (3) starting the first transmission device 104, adjusting the vertical plate, keeping the thickness of the finished core material to be 8.0 +/-0.2 mm and the width to be 1220 +/-20 mm, guiding the core material to sequentially pass through an upper cladding material pouring gate 204 and a lower cladding material pouring gate 205, a water-cooled crystallizer 206 positioned on the upper surface of the core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100 after the core material is cast and rolled into a continuous plate strip, and then conveying the continuous plate strip to a coiling machine for coiling through a composite material roller 207 through a second transmission device 209.
3) Cladding material compounding, after a core material is stably cast and rolled into a coil, adding a soldering flux aid and a deoxidizing agent on line in a second runner 202 and a third runner 203, opening an upper cladding material runner 204, a lower cladding material runner 205, a water-cooled crystallizer 206 positioned on the upper surface of a core material plate strip 100 and a water-cooled crystallizer 206 positioned on the lower surface of the core material plate strip 100, respectively and uniformly spraying an upper cladding material molten metal AA4045 and a lower cladding material molten metal AA7072 on the upper surface and the lower surface of the core material plate strip 100, controlling the spraying pressure of the upper cladding material molten metal and the lower cladding material molten metal to be 0.4-0.6 MPa and the spraying flow to be 0.35-0.50L/min, controlling the cooling water temperature of the upper two water-cooled crystallizers 206 to be 20-30 ℃, the cooling water pressure to be 0.6-0.8 MPa, and respectively metallurgically combining the upper cladding material molten metal AA4045 and the lower cladding material molten metal AA7072 with the core; rolling the composite plate strip by a composite material roller 207, keeping the thickness at 10.0 +/-0.2 mm, controlling the plate shape and the surface quality, further cooling the composite plate strip by a secondary cooling device 208, and sending the composite plate strip 200 to a coiling machine for coiling by a second transmission device 209.
4) The finished product is the double-sided composite 4045/3003/7072 aluminum-based composite plate belt 200 with the thickness of 10.0 +/-0.2 mm and the width of 1220mm, the core material of which is AA3003 aluminum alloy, the upper coating material of which is AA4045, the coating rate of which is 10 +/-2 percent, the lower coating material of which is AA7072, and the coating rate of which is 10 +/-2 percent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The equipment for compounding the aluminum-based composite plate strip is characterized by comprising a core material horizontal continuous casting device for casting the core material plate strip and a clad material compounding device for forming a clad material layer on the upper surface and/or the lower surface of the core material plate strip;
the horizontal continuous casting device of core material includes: the device comprises a first holding furnace for storing core metal liquid, a first launder communicated with the first holding furnace, a water-cooling roller arranged at the outlet end of the first launder, and a first transmission device for conveying a core plate strip to the cladding material compounding device;
cladding material set composite includes: the second heat preservation furnace is used for storing the upper cladding material molten metal, the second runner communicated with the second heat preservation furnace, the upper surface of the core material plate strip is arranged, the upper cladding material pouring gate is communicated with the bottom of the second runner, the third heat preservation furnace is used for storing the lower cladding material molten metal, the third runner communicated with the third heat preservation furnace, the lower surface of the core material plate strip is arranged, the lower cladding material pouring gate is communicated with the bottom of the third runner, the water cooling furnaces are respectively arranged on the upper surface and the lower surface of the core material plate strip, and the composite material roller is used for rolling the composite material plate strip.
2. The apparatus for compounding an aluminum-based composite plate strip according to claim 1, wherein the clad material compounding device further comprises: the secondary cooling device is used for cooling the rolled composite plate strip, and the second transmission device is used for conveying the composite plate strip to the coiling machine.
3. The apparatus for compounding the aluminum-based composite strip according to claim 1, wherein the outer surfaces of the first holding furnace and the first launder, the outer surfaces of the second holding furnace and the second launder, and the outer surfaces of the third holding furnace and the third launder are provided with heaters.
4. The apparatus for compounding an aluminum-based composite panel strip according to claim 1, wherein the second holding furnace and the third holding furnace are formed by dividing one holding furnace by a castable separation layer.
5. The apparatus for compounding the aluminum-based composite plate strip according to claim 1, wherein the first holding furnace, the second holding furnace, or the third holding furnace is a tundish.
6. A method for compounding an aluminum-based composite plate strip is characterized by comprising the following steps:
casting and rolling the core metal liquid to prepare an aluminum-based core material plate strip;
spraying cladding material metal liquid on the upper surface and/or the lower surface of the core material plate strip to form a cladding material layer on the upper surface and/or the lower surface of the core material plate strip;
cooling the cladding material layer on the upper surface and/or the lower surface of the core material plate belt by adopting a water-cooled crystallizer to form an aluminum-based composite plate belt;
and rolling the aluminum-based composite plate strip by using a roller.
7. The method for compounding the aluminum-based composite strip according to claim 6, further comprising:
and cooling the rolled aluminum-based composite plate strip.
8. The method for compounding the aluminum-based composite plate strip as recited in claim 6, wherein in the core plate strip preparation step, the core metal liquid is cast-rolled by using water-cooled rolls, the temperature of the core metal liquid is 700 ℃ to 760 ℃, the casting-rolling speed of the water-cooled rolls is 600mm/min to 800mm/min, the temperature of cooling water is 20 ℃ to 30 ℃, and the pressure of the cooling water is 0.6MPa to 0.8 MPa.
9. The method for compounding the aluminum-based composite plate strip according to claim 6, wherein in the step of spraying the coating material molten metal, the temperature of the coating material molten metal is 680 ℃ to 740 ℃, the spraying pressure is 0.4MPa to 0.6MPa, and the spraying flow rate is 0.18L/min to 1.00L/min.
10. The method for compounding the aluminum-based composite plate strip as recited in claim 6, wherein in the step of cooling the clad material layer, the temperature of the cooling water in the water-cooled crystallizer is 20 ℃ to 30 ℃ and the pressure of the cooling water is 0.6MPa to 0.8 MPa.
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