Crystallizer and continuous casting and rolling device for metal composite material

Abstract

The crystallizer comprises an upper die and a lower die, a groove penetrating through the right end of the upper die is concavely formed in the bottom face of the upper die, a through groove penetrating through the two ends of the lower die is concavely formed in the position, corresponding to the groove, of the top face of the lower die, and a liquid conveying channel is formed in the position, close to the left end, of the upper die. And water cooling channels are formed in the positions, close to the right end, of the middle of the upper mold and the positions, close to the right end, of the middle of the lower mold correspondingly. Upper-layer metal liquid enters the upper mold from the liquid conveying channel and flows to the groove, solid-state lower-layer metal passes through the through groove, the upper-layer metal liquid makes contact with the solid-state lower-layer metal in the through groove, and when the upper-layer metal liquid flows to the position close to the right ends of the upper mold and the lower mold, the upper-layer metal liquid on the solid-state lower-layer metal can be cooled and crystallized to form the metal composite material. The device is suitable for continuous production of metal composite materials, can save longitudinal production space, and does not need to be provided with extra plugs.

Description

Technical Field

[0001] The utility model relates to the technical field of metal casting and rolling, in particular to a crystallizer and a continuous casting and rolling device of a metal composite material. Background Art

[0002] Metal composite materials have broad application prospects in the fields of aerospace, automobiles, electricity, electronics, etc. For example, copper-aluminum composite materials combine the high conductivity of copper and the lightweight characteristics of aluminum, and can be used to manufacture high-performance wires and cables and radiators; while steel-aluminum composite materials have excellent strength and corrosion resistance and can be used to manufacture automobile bodies and structural parts. The casting and rolling of metal composite materials is an efficient, energy-saving and environmentally friendly forming process. In the prior art, the casting and rolling equipment is mostly used for the production of small materials of a single metal or alloy, such as the casting and rolling production of gold bars, and is not suitable for continuous casting and rolling production of metal composite materials (such as copper-aluminum composite materials). In addition, the existing casting and rolling equipment mostly adopts the method of vertically pouring molten metal, which requires a higher production space, resulting in the equipment occupying more longitudinal space, and when the molten aluminum is vertically poured, the molten metal will overflow instantly, resulting in the need to set an additional plug in the crystallizer of the casting and rolling equipment to prevent the molten metal from overflowing. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model proposes a crystallizer and a continuous casting and rolling device for metal composite materials, which can be suitable for the continuous production of metal composite materials and can save longitudinal production space without the need to set up additional plugs.

[0004] The technical solution of the utility model is achieved in this way:

[0005] A crystallizer comprises an upper mold and a lower mold arranged up and down, the bottom surface of the upper mold is laterally concave with a groove penetrating its right end, the top surface of the lower mold is laterally concave with a through groove penetrating its two ends at a position corresponding to the groove, an infusion channel is provided at a position of the upper mold near its left end, the upper end of the infusion channel penetrates the top surface of the upper mold, and the lower end is connected to the groove, and water cooling channels are provided at a position of the middle part of the upper mold near its right end and a position of the middle part of the lower mold near its right end.

[0006] Preferably, a pouring nozzle is provided on the top surface of the upper mold, the pouring nozzle has a pouring channel that runs through from top to bottom, the pouring channel is connected to the upper end of the infusion channel, and a heating component is provided on the side of the pouring nozzle.

[0007] Preferably, the heating component is an electromagnetic induction heater.

[0008] Preferably, it also includes an upper pressing plate and a lower pressing plate, the bottom surface of the upper pressing plate is close to the top surface of the upper mold, the top surface of the lower pressing plate is close to the bottom surface of the lower mold, and a first support column is provided between the upper pressing plate and the lower pressing plate, the upper end of the first support column is connected to the upper pressing plate by screws, and the lower end of the first support column is connected to the lower pressing plate by screws.

[0009] Preferably, it also includes a pouring nozzle pressure plate, a sleeve hole is opened on the pouring nozzle pressure plate, a butt ring is convexly provided on the lower end of the pouring nozzle, the pouring nozzle pressure plate is sleeved on the outer wall of the pouring nozzle through the sleeve hole, the bottom surface of the pouring nozzle pressure plate is tightly against the top surface of the butt ring, a second support column is provided between the pouring nozzle pressure plate and the lower pressure plate, the upper end of the second support column is connected to the pouring nozzle pressure plate by screws, and the lower end of the second support column is connected to the lower pressure plate by screws.

[0010] Preferably, an angle of 90° to 135° is formed between the infusion channel and the groove.

[0011] Preferably, the surface roughness of the inner wall of the groove is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm;

[0012] The surface roughness of the inner wall of the infusion channel is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm;

[0013] The surface roughness of the inner wall of the through groove is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm.

[0014] Preferably, the upper mold and the lower mold are both made of phosphorus deoxidized copper, and the surfaces of the upper mold and the lower mold are plated with chromium or nickel;

[0015] Alternatively, both the upper die and the lower die are made of isostatic graphite.

[0016] The utility model also provides a continuous casting and rolling device for metal composite materials, comprising any of the above-mentioned crystallizers and a casting and rolling roller group located on the right side of the crystallizer, the casting and rolling roller group comprising an upper casting roller and a lower casting roller, the upper casting roller and the lower casting roller are arranged vertically in parallel and the roller surfaces are adjacent to each other, and the metal composite material output by the crystallizer passes between the upper casting roller and the lower casting roller.

[0017] Preferably, a first guide mechanism is provided between the crystallizer and the casting roll group, and the first guide mechanism has a first guide groove;

[0018] A second guide mechanism is provided on the right side of the casting roll group, and the second guide mechanism has a second guide groove;

[0019] The metal composite material output from the crystallizer passes through the first guide groove, between the upper casting roller and the lower casting roller, and the second guide groove in sequence.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) The upper metal liquid enters the upper mold from the infusion channel near the left end of the upper mold and flows to the groove, and the solid lower metal passes through the through groove. The upper metal liquid flowing into the groove contacts the solid lower metal in the through groove. When the upper metal liquid flows to the position near the right end of the upper mold and the lower mold, the upper mold and the lower mold at this position are provided with a water cooling channel, and the temperature is low, so that the upper metal liquid on the solid lower metal can be cooled and crystallized to form a metal composite material, which is suitable for continuous production of metal composite materials;

[0022] (2) The through slots and grooves are arranged horizontally, so that the upper metal liquid and the solid lower metal can move horizontally in the upper and lower molds, thereby saving vertical production space;

[0023] (3) After the upper metal liquid enters the groove from the infusion channel, the rear end of the solid lower metal does not need to be provided with a plug to prevent the upper metal liquid from flowing forward, because there is a water cooling channel near the right end of the upper mold and the lower mold to cool the upper metal liquid. The crystallized and solidified upper metal can form a barrier to the upper metal liquid that subsequently enters the groove, thereby preventing the upper metal liquid from continuing to flow forward and ensuring that the upper metal liquid stably forms an aluminum layer of sufficient thickness on the solid lower metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the crystallizer of the utility model;

[0025] Figure 2 An exploded view of the crystallizer of the utility model;

[0026] Figure 3 It is a three-dimensional cross-sectional view of the crystallizer of the utility model;

[0027] Figure 4 It is a three-dimensional cross-sectional view of the upper mold and the lower mold in the utility model;

[0028] Figure 5 It is a three-dimensional structural schematic diagram of a continuous casting and rolling device of a metal composite material of the utility model;

[0029] Figure 6 It is a three-dimensional cross-sectional view of the continuous casting and rolling device of the metal composite material of the utility model.

[0030] Figure ID:

[0031] 1-crystallizer; 11-upper mold; 111-groove; 112-infusion channel; 12-lower mold; 121-through groove; 13-water cooling channel; 14-pouring nozzle; 141-pouring channel; 142-abutment ring; 15-upper pressure plate; 16-lower pressure plate; 17-first support column; 18-pouring nozzle pressure plate; 181-sleeve hole; 19-second support column; 2-upper casting roller; 3-lower casting roller; 4-first guide mechanism; 41-first guide groove; 5-second guide mechanism; 51-second guide groove; 6-copper belt; 7-copper-aluminum composite material. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Embodiment 1

[0035] See also Figures 1 to 4 A crystallizer comprises an upper mold 11 and a lower mold 12 arranged in a vertical direction. The bottom surface of the upper mold 11 is laterally recessed with a groove 111 penetrating through its right end. The top surface of the lower mold 12 is laterally recessed with a through groove 121 penetrating through its two ends at a position corresponding to the groove 111. The upper mold 11 is provided with an infusion channel 112 near its left end. The upper end of the infusion channel 112 penetrates the top surface of the upper mold 11, and the lower end is connected with the groove 111. A water cooling channel 13 is provided at a middle position of the upper mold 11 near its right end and a middle position of the lower mold 12 near its right end.

[0036] It should be noted that the metal composite material is composed of two metals. The metal located on the upper layer of the metal composite material is called the upper metal, and the metal located on the lower layer of the metal composite material is called the lower metal. The upper metal liquid is the liquid upper metal. The metal composite material of this application takes copper-aluminum composite material as an example, the upper metal is aluminum, and the lower metal is copper.

[0037] The infusion channel 112 is used to supply the upper metal liquid to the upper mold 11, and the through groove 121 is used to supply the solid lower metal (taking copper strip as an example) to the lower mold 12. The infusion channel 112 is connected with the groove 111, and the upper metal liquid (taking aluminum liquid as an example) entering the infusion channel 112 will flow into the groove 111. Since the upper mold 11 and the lower mold 12 are arranged up and down, the bottom surface of the upper mold 11 is close to the top surface of the lower mold 12, and the positions of the groove 111 and the through groove 121 correspond, so that the groove 111 is connected with the through groove 121, and the upper metal liquid entering the groove 111 can contact the solid lower metal in the through groove 121; the water-cooling channel 13 is used for cooling water to pass through, and the cooling water can reduce the temperature of the upper mold 11 and the lower mold 12 near their right end positions, so that the temperature of the groove 111 and the through groove 121 near their right end positions is also reduced, and the upper metal liquid at this position is cooled and crystallized.

[0038] Working principle: The aluminum liquid enters the upper mold 11 from the infusion channel 112 near the left end of the upper mold 11 and flows to the groove 111. The copper strip passes through the through groove 121. The aluminum liquid flowing into the groove 111 contacts the copper strip in the through groove 121. When the aluminum liquid flows to the position near the right end of the upper mold 11 and the lower mold 12, the upper mold 11 and the lower mold 12 at this position are provided with a water cooling channel 13, and the temperature is low, so that the aluminum liquid on the copper strip can be cooled and crystallized to form a copper-aluminum composite material, which is suitable for the continuous production of metal composite materials; the through groove 121 and the groove 111 are both arranged horizontally, so that the aluminum liquid and The copper strip can move horizontally in the upper mold 11 and the lower mold 12, thereby saving longitudinal production space; after the aluminum liquid enters the groove 111 from the infusion channel 112, there is no need to set a plug at the rear end of the copper strip to prevent the aluminum liquid from flowing forward, because there is a water cooling channel 13 near the right end of the upper mold 11 and the lower mold 12 to cool the aluminum liquid, and the crystallized and solidified aluminum can form a barrier to the aluminum liquid that subsequently enters the groove 111, thereby preventing the aluminum liquid from continuing to flow forward, without the need to set an additional plug, and ensuring that the aluminum liquid stably forms an aluminum layer of sufficient thickness on the copper strip.

[0039] Preferably, see Figures 1 to 3The top surface of the upper mold 11 is provided with a pouring nozzle 14, and the pouring nozzle 14 has a pouring channel 141 that runs through from top to bottom. The pouring channel 141 is connected to the upper end of the infusion channel 112, and a heating component is provided on the side of the pouring nozzle 14. After the crystallizer receives the molten aluminum, it is necessary to ensure that the molten aluminum is in a molten state, that is, to ensure the liquid state of the molten aluminum, so that the continuous discharge of the molten aluminum can be ensured. In traditional equipment, the molten aluminum is directly added to the crystallizer for crystallization and solidification after being dissolved in a separate molten aluminum dissolving tank. The disadvantage of this is that the machine needs to be shut down after a piece of metal material is made, so the purpose of continuous production cannot be achieved. In this embodiment, a pouring nozzle 14 with a pouring channel 141 is provided, and the pouring channel 141 is connected to the infusion channel 112, and a heating component is provided on the side of the pouring nozzle 14. The heating component can keep the molten aluminum entering the pouring channel 141 at a certain temperature to prevent the molten aluminum from cooling and crystallizing when it is poured. Preferably, the heating range of the heating component covers the left part of the crystallizer, which can prevent the aluminum liquid from crystallizing in the pouring channel 141 and the infusion channel 112. In this embodiment, the heating component can keep the aluminum liquid temperature in the left half of the crystallizer at 680-700°C, and the heating component uses an electromagnetic induction heater.

[0040] Preferably, see Figures 1 to 3 , further comprising an upper pressing plate 15 and a lower pressing plate 16, the bottom surface of the upper pressing plate 15 is in close contact with the top surface of the upper mold 11, the top surface of the lower pressing plate 16 is in close contact with the bottom surface of the lower mold 12, a first support column 17 is provided between the upper pressing plate 15 and the lower pressing plate 16, the upper end of the first support column 17 is connected to the upper pressing plate 15 by screws, and the lower end of the first support column 17 is connected to the lower pressing plate 16 by screws. The upper pressing plate 15 and the lower pressing plate 16 are used to press the upper mold 11 and the lower mold 12, so as to prevent the aluminum liquid from flowing out from the gap between the upper mold 11 and the lower mold 12, thereby improving the safety of use.

[0041] Preferably, see Figures 1 to 3 , further comprising a pouring nozzle pressure plate 18, a sleeve hole 181 is provided on the pouring nozzle pressure plate 18, an abutment ring 142 is convexly provided on the lower end of the pouring nozzle 14 in the circumferential direction, the pouring nozzle pressure plate 18 is sleeved on the outer wall of the pouring nozzle 14 through the sleeve hole 181, the bottom surface of the pouring nozzle pressure plate 18 is in close contact with the top surface of the abutment ring 142, a second support column 19 is provided between the pouring nozzle pressure plate 18 and the lower pressure plate 16, the upper end of the second support column 19 is connected to the pouring nozzle pressure plate 18 by screws, and the lower end of the second support column 19 is connected to the lower pressure plate 16 by screws. By providing the pouring nozzle pressure plate 18, the pouring nozzle pressure plate 18 is sleeved on the pouring nozzle 14 and presses the abutment ring 142 of the pouring nozzle 14, so that the pouring nozzle 14 is pressed tightly against the upper mold 11, and the aluminum liquid is prevented from flowing out of the gap between the pouring nozzle 14 and the upper mold 11.

[0042] Preferably, an angle of 90° to 135° is formed between the infusion channel 112 and the groove 111. In this embodiment, an angle of 90° is formed between the infusion channel 112 and the groove 111, that is, the infusion channel 112 is perpendicular to the groove 111. Within the angle range of 90° to 135°, the larger the angle of the infusion channel 112, the smoother the aluminum liquid enters the groove 111 from the infusion channel 112.

[0043] Preferably, in order to ensure that the contact surface between the crystallizer and the aluminum liquid is smooth and prevent the aluminum liquid from crystallizing and adhering to the crystallizer, the groove 111, the infusion channel 112 and the through groove 121 meet the following conditions: the surface roughness of the inner wall of the groove 111 is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm; the surface roughness of the inner wall of the infusion channel 112 is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm; and the surface roughness of the inner wall of the through groove 121 is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm.

[0044] In this embodiment, the upper mold 11 and the lower mold 12 are made of phosphorus deoxidized copper. Copper has strong corrosion resistance, long service life, good chemical stability, and is not easy to react with other substances. The surfaces of the upper mold 11 and the lower mold 12 are plated with chromium or nickel, which is conducive to demoulding of the metal composite material.

[0045] In some other embodiments, the upper mold 11 and the lower mold 12 are both made of isostatic graphite, which has high strength, high temperature resistance, corrosion resistance, good conductivity, low thermal expansion coefficient, and good thermal shock resistance, and is suitable for continuous metal casting and rolling.

[0046] Embodiment 2

[0047] See also Figure 5 and Figure 6 A continuous casting and rolling device for metal composite materials, comprising a crystallizer 1 of embodiment 1 and a casting roll group located on the right side of the crystallizer 1, wherein the casting roll group comprises an upper casting roll 2 and a lower casting roll 3, wherein the upper casting roll 2 and the lower casting roll 3 are arranged vertically in parallel and the roll surfaces are adjacent to each other, and the metal composite material outputted from the crystallizer 1 passes between the upper casting roll 2 and the lower casting roll 3. The crystallizer 1 is made into a metal composite material such as a copper-aluminum composite material, and the metal composite material outputted from the crystallizer 1 passes between the upper casting roll 2 and the lower casting roll 3, and the copper-aluminum composite material is rolled into a required thickness by using the upper casting roll 2 and the lower casting roll 3. During the crystallization process of aluminum liquid, the outer surface is solidified and formed first, and the inner part may still be in liquid state, and at this time, it enters between the upper casting roll 2 and the lower casting roll 3 for rolling and pressing, thereby increasing the compositeness between the two metals. The casting roll group can be set as one or more groups, and the number of the casting roll groups is determined according to the thickness of the metal composite material. The thinner the thickness, the more casting roll groups are required.

[0048] Preferably, a first guide mechanism 4 is provided between the crystallizer 1 and the casting roll group, and the first guide mechanism 4 has a first guide groove 41; a second guide mechanism 5 is provided on the right side of the casting roll group, and the second guide mechanism 5 has a second guide groove 51; the metal composite material output from the crystallizer 1 sequentially passes through the first guide groove 41, between the upper casting roll 2 and the lower casting roll 3, and the second guide groove 51. The first guide mechanism 4 and the second guide mechanism 5 respectively play the role of guiding the metal composite material to enter the casting roll group for rolling and guiding the output of the rolled metal composite material to avoid the deviation of the metal composite material.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crystallizer, characterized in that: The invention comprises an upper mold (11) and a lower mold (12) which are arranged in a vertical direction. The bottom surface of the upper mold (11) is laterally provided with a groove (111) which passes through its right end. The top surface of the lower mold (12) is laterally provided with a through groove (121) which passes through its two ends at a position corresponding to the groove (111). The upper mold (11) is provided with an infusion channel (112) near its left end. The upper end of the infusion channel (112) passes through the top surface of the upper mold (11), and the lower end is connected with the groove (111). The middle part of the upper mold (11) near its right end and the middle part of the lower mold (12) near its right end are both provided with water cooling channels (13).

2. The crystallizer according to claim 1, characterized in that The top surface of the upper mold (11) is provided with a pouring nozzle (14), the pouring nozzle (14) has a pouring channel (141) that passes through from top to bottom, the pouring channel (141) is connected to the upper end of the infusion channel (112), and a heating component is provided on the side of the pouring nozzle (14).

3. The crystallizer according to claim 2, characterized in that The heating component is an electromagnetic induction heater.

4. The crystallizer according to claim 2, characterized in that It also includes an upper pressing plate (15) and a lower pressing plate (16), wherein the bottom surface of the upper pressing plate (15) is in close contact with the top surface of the upper mold (11), and the top surface of the lower pressing plate (16) is in close contact with the bottom surface of the lower mold (12), and a first support column (17) is provided between the upper pressing plate (15) and the lower pressing plate (16), wherein the upper end of the first support column (17) is connected to the upper pressing plate (15) by screws, and the lower end of the first support column (17) is connected to the lower pressing plate (16) by screws.

5. The crystallizer according to claim 4, characterized in that It also includes a pouring nozzle pressure plate (18), a sleeve hole (181) is opened on the pouring nozzle pressure plate (18), a contact ring (142) is convexly provided on the lower end of the pouring nozzle (14), the pouring nozzle pressure plate (18) is sleeved on the outer wall of the pouring nozzle (14) through the sleeve hole (181), the bottom surface of the pouring nozzle pressure plate (18) is tightly attached to the top surface of the contact ring (142), a second support column (19) is provided between the pouring nozzle pressure plate (18) and the lower pressure plate (16), the upper end of the second support column (19) is connected to the pouring nozzle pressure plate (18) by screws, and the lower end of the second support column (19) is connected to the lower pressure plate (16) by screws.

6. The crystallizer according to any one of claims 1 to 5, characterized in that An included angle of 90° to 135° is formed between the infusion channel (112) and the groove (111).

7. The crystallizer according to claim 1, characterized in that The surface roughness of the inner wall of the groove (111) is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm; The surface roughness of the inner wall of the infusion channel (112) is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm; The surface roughness of the inner wall of the through groove (121) is 0.6-0.8 μm, and the flatness is 0.01-0.02 mm.

8. The crystallizer according to claim 1, characterized in that The upper mold (11) and the lower mold (12) are both made of phosphorus-deoxidized copper, and the surfaces of the upper mold (11) and the lower mold (12) are plated with chromium or nickel; Alternatively, the upper mold (11) and the lower mold (12) are both made of isostatic graphite.

9. A continuous casting and rolling device for metal composite materials, characterized in that: It comprises a crystallizer (1) as described in any one of claims 1 to 8 and a casting roll group located on the right side of the crystallizer (1), wherein the casting roll group comprises an upper casting roll (2) and a lower casting roll (3), wherein the upper casting roll (2) and the lower casting roll (3) are arranged vertically side by side and the roll surfaces are adjacent to each other, and the metal composite material output by the crystallizer (1) passes between the upper casting roll (2) and the lower casting roll (3).

10. The continuous casting and rolling device of the metal composite material according to claim 9, characterized in that: A first guide mechanism (4) is provided between the crystallizer (1) and the casting roll group, and the first guide mechanism (4) has a first guide groove (41); A second guide mechanism (5) is provided on the right side of the casting roll group, and the second guide mechanism (5) has a second guide groove (51); The metal composite material output from the crystallizer (1) passes through the first guide groove (41), between the upper casting roller (2) and the lower casting roller (3), and the second guide groove (51) in sequence.

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