Crystallization systems for composite metal ingot casting

Abstract

The present invention discloses a crystallization system for composite metal ingot casting, including at least one first crystallizer and at least one second crystallizer, the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, the outlets of the first crystallizer and the second crystallizer are sealed with a support plate, the support plate is connected to a traction mechanism, the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber and at least one composite metal liquid storage chamber, the parent metal liquid storage chamber and the composite metal liquid storage chamber are isolated from each other. The crystallizer cavity is filled with metal liquid from the beginning, and the entry of external air is completely isolated; when the metal ingot tray descends, a negative pressure gap is formed between the outer side of the solidification layer and the lower end of the crystallizer and the tray, attracting the metal liquid to quickly fill the gap, thereby obtaining a cleaner bonding interface than other methods.

Description

Technical Field

[0001] The present invention relates to the technical field of metal casting, and more particularly to a crystallization system for composite metal ingot casting. Background Art

[0002] Advanced manufacturing such as new energy vehicles, autonomous driving, robots, and drones requires more metal parts to have multiple properties at the same time to achieve lightweight structures and precise control. Large and super-large mechanical equipment are increasingly used in various complex projects, and some metal parts such as beams, plates, shafts, bearings, and pipes need to have multiple properties to meet various working environments. Developing structure-function integration (Structure-Function Integration) material manufacturing technology is one of the important measures to solve these material problems, and it has become an important development direction in the field of metal materials.

[0003] At present, the metal composite materials with layered structure mainly adopt solid-liquid composite and liquid-liquid composite casting technology; solid-liquid composite is to solidify a layer of dissimilar metal on one side of the already formed parent metal, such as the outer solidification layer covering the liquid, the outer liquid covering the inner core material, etc. However, even if the parent metal is cleaned on the surface, it is difficult to avoid oxidation or adsorption of water vapor and harmful elements such as H, C, S on its surface; these phenomena lead to the formation of inclusions and pores on the interface during the solidification of dissimilar metals. In addition, the solidification of dissimilar metal liquids will produce expansion or contraction different from that of the parent metal solid, and it is very likely to produce microcracks at the interface. These inclusions, pores and microcracks seriously reduce the bonding quality of the interface and thus affect the performance and service life of the composite material. Liquid-liquid composite requires a complex crystallization system, such as the use of partitions, inert gas protection, electromagnetic technology, etc. in two metal liquids. Some structures are too complex, the process parameters are harsh, and the operation is complicated. Some still cannot avoid interface defects well, and there are restrictions on the types of metals. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a crystallization system for composite metal ingot casting, which can consolidate two adjacent metals together in a mutually molten metallurgical bonding manner.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a crystallization system for casting composite metal ingots, comprising at least one first crystallizer and at least one second crystallizer, the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, the outlets of the first crystallizer and the second crystallizer are sealed with a support plate, the support plate is connected to a traction mechanism, the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber and at least one composite metal liquid storage chamber, the parent metal liquid storage chamber and the composite metal liquid storage chamber are isolated from each other, a first thermal insulation layer is provided on the side elevation of the composite metal liquid storage chamber adjacent to the parent metal liquid storage chamber, and the bottom wall of the first thermal insulation layer is in contact with the top wall of the support plate.

[0006] In the above-mentioned crystallization system for casting composite metal ingots, a second thermal insulation layer is arranged on the side wall surface of the parent metal liquid storage chamber, and a second thermal insulation layer is also arranged on the side wall surface of the composite metal liquid storage chamber away from the parent metal liquid storage chamber, and the distance from the bottom of the second thermal insulation layer to the support plate is greater than zero.

[0007] In the above-mentioned crystallization system for casting composite metal ingots, the number of the first crystallizers and the number of the second crystallizers are both one, the first crystallizer is a rectangular crystallizer, and the second crystallizer is a trough-shaped crystallizer. An opening is provided on one side of the trough-shaped crystallizer, and the side of the trough-shaped crystallizer with the opening is arranged toward the side wall of the rectangular crystallizer, and the side wall of the trough-shaped crystallizer with the opening is fixedly connected to the side wall of the rectangular crystallizer. After the trough-shaped crystallizer is connected to the rectangular crystallizer, the space in the trough-shaped crystallizer forms a composite metal liquid storage chamber, and the space in the rectangular crystallizer is a base metal liquid storage chamber, the composite metal liquid storage chamber is provided with the first thermal insulation layer, and the first thermal insulation layer is attached to the outer wall of the rectangular crystallizer, and the second thermal insulation layer is provided on the inner wall of the trough-shaped crystallizer and the inner wall of the rectangular crystallizer.

[0008] The above-mentioned crystallization system for casting composite metal ingots has metal diversion ports on the top of the rectangular crystallizer and the top of the trough-shaped crystallizer for fluid communication; cooling water inlet pipes are fluid-connected on the side walls of the rectangular crystallizer and the side walls of the trough-shaped crystallizer, and valves are installed on the cooling water inlet pipes; cooling water outlet pipes are fluid-connected on the bottom of the rectangular crystallizer and the bottom of the trough-shaped crystallizer, and the outlet of the cooling water outlet pipe is inclined toward the direction of the composite metal ingot.

[0009] The above-mentioned crystallization system for casting composite metal ingots, the number of the first crystallizers is one, the number of the second crystallizers is two, the first crystallizer is a rectangular crystallizer, the two second crystallizers are trough-shaped crystallizers, the two trough-shaped crystallizers are symmetrically sealed and fastened on the opposite side walls of the rectangular crystallizer to form two independent composite metal liquid storage chambers, the space inside the trough-shaped crystallizer is the parent metal liquid storage chamber, the first thermal insulation layer is arranged on the outer wall surface of the rectangular crystallizer located in the sealing and fastening area of ​​the two trough-shaped crystallizers, and the second thermal insulation layer is arranged on the inner wall surface of the two trough-shaped crystallizers and the inner wall surface of the rectangular crystallizer.

[0010] The above-mentioned crystallization system for casting composite metal ingots has metal diversion ports on the top of the rectangular crystallizer and on the top of the two trough-shaped crystallizers; the upper part of the side walls of the two trough-shaped crystallizers and the upper part of the side walls of the rectangular crystallizer are fluid-connected with cooling water inlet pipes, valves are installed on the cooling water inlet pipes, the bottoms of the two trough-shaped crystallizers are fluid-connected with cooling water outlet pipes, the two cooling water outlet pipes are inclined toward the direction of the composite metal ingot, and the lower part of the side wall of the rectangular crystallizer is also fluid-connected with a cooling water outlet pipe.

[0011] In the above-mentioned crystallization system for casting composite metal ingots, the number of the first crystallizers and the number of the second crystallizers are both two, the two first crystallizers are both rectangular crystallizers, the two second crystallizers are both trough-shaped crystallizers, the two trough-shaped crystallizers are symmetrically sealed and buckled on the opposite side walls of the rectangular crystallizer to form two independent composite metal liquid storage chambers, the two rectangular crystallizers are respectively the first rectangular crystallizer and the second rectangular crystallizer, the size of the second rectangular crystallizer is larger than the size of the first rectangular crystallizer, the first rectangular crystallizer is installed in the second rectangular crystallizer, the space between the first rectangular crystallizer and the second rectangular crystallizer is the parent metal liquid storage chamber, and the second rectangular crystallizer is located in the sealing and buckling area of ​​the two trough-shaped crystallizers. The first thermal insulation layer, a second thermal insulation layer is arranged on the outer wall surface of the first rectangular crystallizer, on the inner wall surface of the second rectangular crystallizer and on the inner walls of the two trough-shaped crystallizers; the parent metal liquid storage chamber and the two composite metal liquid storage chambers are fluid-connected with metal diversion ports, the upper part of the side wall of the second rectangular crystallizer, the upper part of the side wall of the two trough-shaped crystallizers and the top of the first rectangular crystallizer are fluid-connected with cooling water inlet pipes, a cooling water outlet is provided on the bottom of the first rectangular crystallizer, a water diversion block is installed in the cooling water outlet, a drainage hole corresponding to the conical diversion block is provided on the support plate, a cooling water outlet pipe is fluid-connected on the lower part of the side wall of the second rectangular crystal, and cooling water outlet pipes are also fluid-connected on the bottom of the two trough-shaped crystallizers, and the two cooling water outlet pipes are inclined toward the direction of the composite metal ingot.

[0012] The above-mentioned crystallization system for casting composite metal ingots, the first crystallizer and the second crystallizer are both circular crystallizers, the diameter of the second circular crystallizer is larger than that of the first circular crystallizer, the second circular crystallizer is sleeved on the first circular crystallizer, the space between the first circular crystallizer and the second circular crystallizer is a composite metal liquid storage chamber, the space in the first circular crystallizer is a parent metal liquid storage chamber, a first thermal insulation layer is arranged on the outer wall surface of the first circular crystallizer, and a second thermal insulation layer is arranged on the inner wall surface of the second circular crystallizer and the inner wall surface of the first circular crystallizer; the parent metal liquid storage chamber and the composite metal liquid storage chamber are both fluid-conducted with metal diversion ports; the upper part of the side wall of the second circular crystallizer is fluid-conducted with a cooling water inlet pipe, and the bottom of the second circular crystallizer is provided with a cooling water outlet pipe along its circumference, and the outlet of the cooling water outlet pipe is inclined toward the axis of the first circular crystallizer; one side of the top of the first circular crystallizer is fluid-conducted with a cooling water outlet pipe, and the other side of the top of the first circular crystallizer is also fluid-conducted with a cooling water inlet pipe, and a valve is installed on the cooling water inlet pipe.

[0013] The crystallization system for composite metal ingot casting, the number of the first crystallizers is two, the number of the second crystallizers is one, the two first crystallizers and the one second crystallizer are circular crystallizers, the two first crystallizers are respectively the first circular crystallizer and the second circular crystallizer, the second crystallizer is the third circular crystallizer, the second circular crystallizer is installed in the third circular crystallizer, the first circular crystallizer is installed in the second circular crystallizer, the space between the first circular crystallizer and the second circular crystallizer is the parent metal liquid storage chamber, the space between the second circular crystallizer and the third circular crystallizer is the composite metal liquid storage chamber, the outer wall of the first circular crystallizer, the inner wall of the second circular crystallizer and the inner wall of the third circular crystallizer are all provided with second Insulation layer, a first insulation layer is arranged on the outer wall surface of the second circular crystallizer; the metal liquid storage chamber and the composite metal liquid storage chamber are both fluid-connected with metal guide pipes, the top of the first circular crystallizer, the top of the second circular crystallizer and the side wall of the third circular crystallizer are all fluid-connected with cooling water inlet pipes, a valve is installed on the cooling water inlet pipe, a cooling water outlet is opened on the bottom of the first circular crystallizer, a water dividing block is installed in the cooling water outlet, a drainage hole corresponding to the position of the water dividing block is opened on the support plate, a cooling water outlet pipe is fluid-connected on the top of the second circular crystallizer, cooling water outlet pipes are also fluid-connected on both sides of the bottom of the third circular crystallizer, and the outlets of the two cooling water outlet pipes located at the bottom of the third circular crystallizer are inclined toward the axis of the third circular crystallizer.

[0014] The technical solution of the present invention achieves the following beneficial technical effects:

[0015] 1. The cavity of the crystallizer is filled with metal liquid from the beginning, completely isolating the entry of external air, ensuring that the surface of the metal liquid that has just solidified will never come into contact with the air and be contaminated. In addition, when the metal ingot tray descends, a negative pressure gap is formed between the outer side of the first dense solidified layer of metal and the lower end of the crystallizer and the tray, attracting the second and third metal liquids to quickly fill the gap, completely avoiding the intervention of air, greatly reducing the time interval between the second and third metal liquids and the first metal solidified layer, thereby obtaining a cleaner bonding interface than other methods; because the bonding speed is very fast, the heat loss of the first metal solidified layer is reduced, thereby ensuring that when the metal liquid contacts the solidified layer, it can still maintain a high temperature and realize mutual melting or diffusion type metallurgical bonding; under the attraction of negative pressure, the second and third metal liquids can fully contact the outer side of the first metal solidified layer, improving the bonding effect of the composite surface and avoiding the inclusion of bubbles in the composite surface.

[0016] 2. After the second and third molten metals come into contact with the first metal of the just-formed solidified layer, the surface of the first metal solidified layer will partially remelt or liquid-solid diffuse under the subsequent continuous secondary heating of the molten metal, and form a mutual melting or diffusion type metallurgical bond after cooling; the chemical composition and phase in the metallurgical bonding layer are in a gradient transition, and high interface bonding strength parts are obtained, and metal composites with large differences in thermal expansion coefficients can be prepared, so that the components will not be damaged under high stress conditions.

[0017] 3. The thickness of the first, second and third metal layers can be controlled by adjusting the size and relative position of the crystallizer, and two, three or even more layers of composites with different thicknesses can be obtained; each crystallizer is located at the same height, avoiding the complex crystallizer structure and operation process of different height crystallizer configurations, partitions, prefabricated core rods, core rod surface cleaning, electromagnetic fields, and sequential injection of metal liquid in the existing process.

[0018] 5. When preparing a double-layer composite ingot, the first molten metal can be located in the cavity of any crystallizer without specifying the left side, right side, inner layer or outer layer; this technology can also manufacture a hollow ingot by installing an internal cooling crystallizer at the center of the crystallizer. The cooling water enters from the top, increases the flow rate and cooling intensity through a water divider, and then is discharged from the bottom and sprayed onto the inner surface of the solidified ingot. The ingot is cooled in two ways, from the outside to the inside and from the inside to the outside, which promotes the rapid solidification of the hollow ingot. The composite ingot can be in the form of a rectangular ingot, a flat ingot, a round rod or a hollow ingot, and can be used directly in the cast or heat-treated state, or can be used after changing the shape and size through extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

[0020] Figure 2 A schematic diagram of the top view of the structure of Embodiment 1 of the present invention;

[0021] Figure 3 The present invention Figure 2 Schematic diagram of the cross-sectional structure at AA;

[0022] Figure 4 A schematic cross-sectional three-dimensional structure diagram of Embodiment 1 of the present invention;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of Embodiment 2 of the present invention;

[0024] Figure 6 A schematic diagram of the top view of the structure of Embodiment 2 of the present invention;

[0025] Figure 7 The present invention Figure 6 Schematic diagram of the cross-sectional structure at AA;

[0026] Figure 8 A schematic cross-sectional three-dimensional structure diagram of embodiment 2 of the present invention;

[0027] Fig. 9 A schematic diagram of the three-dimensional structure of Embodiment 3 of the present invention;

[0028] Fig.10 A schematic diagram of the top view of the structure of Embodiment 3 of the present invention;

[0029] Fig.11 The present invention Fig.10 Schematic diagram of the cross-sectional structure at AA;

[0030] Fig.12 A schematic cross-sectional three-dimensional structure diagram of Embodiment 3 of the present invention;

[0031] Fig.13 A schematic top view of the structure of Embodiment 4 of the present invention;

[0032] Fig.14 The present invention Fig.13 Schematic diagram of the cross-sectional structure at AA;

[0033] Fig.15 A schematic diagram of the three-dimensional structure of embodiment 4 of the present invention;

[0034] Fig.16 A schematic diagram of the top view of the structure of Embodiment 5 of the present invention;

[0035] Fig.17 The present invention Fig.16 Schematic diagram of the cross-sectional structure at AA.

[0036] The reference numerals in the figure are as follows: 1- support plate; 2- traction mechanism; 3- parent metal liquid storage chamber; 4- composite metal liquid storage chamber; 5- first thermal insulation layer; 6- second thermal insulation layer; 7- rectangular crystallizer; 8- trough crystallizer; 9- metal guide port; 10- cooling water inlet pipe; 11- cooling water outlet pipe; 12- drainage hole; 13- circular crystallizer; 14- water distribution block. DETAILED DESCRIPTION

[0037] Example 1

[0038] The crystallization system for composite metal ingot casting in this embodiment includes at least one first crystallizer and at least one second crystallizer. The outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane. A support plate 1 is sealed and attached to the outlets of the first crystallizer and the second crystallizer. The support plate 1 is connected to a traction mechanism 2. The first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber 3 and at least one composite metal liquid storage chamber 4. The parent metal liquid storage chamber 3 and the composite metal liquid storage chamber 4 are isolated from each other. A first thermal insulation layer 5 is provided on the side surface of the composite metal liquid storage chamber 4 adjacent to the parent metal liquid storage chamber 3, and the bottom wall of the first thermal insulation layer 5 is attached to the top wall of the support plate 1; a second thermal insulation layer 6 is provided on the side wall surface of the parent metal liquid storage chamber 3, and a second thermal insulation layer 6 is also provided on the side wall surface of the composite metal liquid storage chamber 4 away from the parent metal liquid storage chamber 3, and the distance from the bottom of the second thermal insulation layer 6 to the support plate 1 is greater than zero. The interior of the crystallizer is provided with a cooling channel for cooling water to pass through, such as Figure 3 As shown, a cooling channel is provided in the rectangular crystallizer 7, which is connected to the cooling water inlet pipe 10 at the top and the cooling water outlet pipe 11 at the bottom. The function of the first thermal insulation layer 5 and the second thermal insulation layer 6 is to prevent the molten metal from directly contacting the crystallizer and to prevent the molten metal from cooling to form a metal condensation layer.

[0039] In this embodiment, if Figure 1-4 As shown, a crystallizer for casting a double-layer composite plate ingot, the number of the first crystallizers and the number of the second crystallizers are both one, the first crystallizer is a rectangular crystallizer 7, the second crystallizer is a trough crystallizer 8, the cross-sectional shape of the trough crystallizer 8 perpendicular to the height direction is similar to the shape of a channel steel, one side of the trough crystallizer 8 is provided with an opening, the side of the trough crystallizer 8 provided with the opening is arranged toward the side wall of the rectangular crystallizer 7, and the side wall surface of the trough crystallizer 8 with the opening is fixedly connected to the side wall of the rectangular crystallizer 7, after the trough crystallizer 8 is connected to the rectangular crystallizer 7, the space in the trough crystallizer 8 forms a composite metal liquid storage chamber 4, the space in the rectangular crystallizer 7 is a parent metal liquid storage chamber 3, the composite metal liquid storage chamber 4 is provided with the first thermal insulation layer 5, and the first thermal insulation layer 5 is attached to the outer wall surface of the rectangular crystallizer 7, and the second thermal insulation layer 6 is provided on the inner wall surface of the trough crystallizer 8 and the inner wall surface of the rectangular crystallizer 7; as Figure 3 As shown, the upper part of the rectangular crystallizer 7 and the upper part of the trough-shaped crystallizer 8 are both fluid-connected with a metal diversion port 9; the side walls of the rectangular crystallizer 7 and the side walls of the trough-shaped crystallizer 8 are both fluid-connected with a cooling water inlet pipe 10, and a valve is installed on the cooling water inlet pipe 10; the bottom of the rectangular crystallizer 7 and the bottom of the trough-shaped crystallizer 8 are both fluid-connected with a cooling water outlet pipe 11, and the outlet of the cooling water outlet pipe 11 is inclined toward the direction of the composite metal ingot.

[0040] First, prepare two kinds of metal melts for heat preservation and standby, install the trough-shaped crystallizer 8 and the rectangular crystallizer 7 together, and fix them through the fixing frame, start the traction mechanism 2 to drive the support plate 1 to rise, and the support plate 1 is in close contact with the bottom of the crystallizer and closes the cavity surrounded by the crystallizer. The first insulation layer 5 and the second insulation layer 6 are respectively coated at the corresponding positions, and the cooling water inlet pipe 10 is connected to the cooling water source, and the cooling water flow required by each crystallizer is controlled by the valve.

[0041] After the crystallizer is ready for installation, molten metal is put into the rectangular crystallizer 7 and the trough crystallizer 8. When the liquid level reaches a certain height, the traction mechanism 2 is turned on to drive the support plate 1 to descend, driving the ingot to move downward out of the crystallizer, and maintaining this stable casting process until the ingot reaches the required height. Then, the addition of molten metal to the crystallizer is stopped. After the ingot is completely out of the crystallizer, the cooling water and traction mechanism 2 are turned off, the ingot is unloaded, and the casting process is completed to obtain a double-layer composite metal plate ingot.

[0042] Example 2

[0043] In this embodiment, a crystallizer is used for casting a three-layer composite metal plate ingot, such as Figure 5-8 As shown, the number of the first crystallizers is one, and the number of the second crystallizers is two. On the basis of Example 1, a trough-shaped crystallizer 8 is also installed on the other side of the rectangular crystallizer 7. The specific scheme is as follows: the first crystallizer is a rectangular crystallizer 7, and the two second crystallizers are both trough-shaped crystallizers 8. The two trough-shaped crystallizers 8 are symmetrically sealed and buckled on the opposite side walls of the rectangular crystallizer 7 to form two independent composite metal liquid storage chambers 4. The space inside the trough-shaped crystallizer 8 is the parent metal liquid storage chamber 3. The outer wall surface of the rectangular crystallizer 7 located in the sealed buckled area of ​​the two trough-shaped crystallizers 8 is provided with a first insulation layer 5. A second thermal insulation layer 6 is provided on the inner wall surface of each of the trough-shaped crystallizers 8 and the inner wall surface of the rectangular crystallizer 7; a metal diversion port 9 is fluid-connected above the rectangular crystallizer 7 and above the two trough-shaped crystallizers 8; a cooling water inlet pipe 10 is fluid-connected on the upper part of the side walls of the two trough-shaped crystallizers 8 and the upper part of the side walls of the rectangular crystallizer 7, and a valve is installed on the cooling water inlet pipe 10; a cooling water outlet pipe 11 is fluid-connected on the bottom of the two trough-shaped crystallizers 8, and the two cooling water outlet pipes 11 are inclined toward the direction of the composite metal ingot, and a cooling water outlet pipe 11 is also fluid-connected on the lower part of the side wall of the rectangular crystallizer 7.

[0044] First, prepare three kinds of metal melts for insulation and standby use, assemble two trough-shaped crystallizers 8 and a rectangular crystallizer 7, turn on the traction mechanism 2 to drive the support plate 1 to rise, the support plate 1 is in close contact with the bottom end of the crystallizer and closes the cavity surrounded by the crystallizer, install a fixing frame on the upper end of the crystallizer, install the first insulation layer 5 and the second insulation layer 6 at the corresponding positions on the two trough-shaped crystallizers 8 and the rectangular crystallizer 7, and connect the cooling water inlet pipe 10 to the cooling water source.

[0045] When the crystallizer is installed in place and all the cooling water circulations of the crystallizer are normal, molten metal is added to the parent metal liquid storage chamber 3 and the composite metal liquid storage chamber 4 respectively. When the liquid level reaches a certain height, the traction mechanism 2 is turned on to drive the support plate 1 to descend, and at the same time drive the ingot to move downward out of the crystallizer. This stable casting process is maintained until the ingot reaches the required height, and the addition of molten metal is stopped. After the ingot is completely out of the crystallizer, the cooling water and traction mechanism 2 are turned off, and the ingot is unloaded. The casting process is completed to obtain a three-layer composite metal plate ingot.

[0046] Example 3

[0047] In this embodiment, a crystallizer is used for casting a three-layer composite hollow metal plate ingot, such as Figure 9-12As shown, on the basis of implementation 2, a smaller rectangular crystallizer 7 is loaded into the middle rectangular crystallizer 7 to perform three-layer composite hollow metal plate ingot casting, specifically as follows: the number of the first crystallizers and the number of the second crystallizers are both two, the two first crystallizers are both rectangular crystallizers 7, the two second crystallizers are both trough-shaped crystallizers 8, the two trough-shaped crystallizers 8 are symmetrically sealed and buckled on the opposite side walls of the rectangular crystallizer 7 to form two independent composite metal liquid storage chambers 4, the two rectangular crystallizers 7 are respectively the first rectangular crystallizer 7 and the second rectangular crystallizer 7, the size of the second rectangular crystallizer 7 is larger than that of the first rectangular crystallizer 7, the first rectangular crystallizer 7 is installed in the second rectangular crystallizer 7, the space between the first rectangular crystallizer 7 and the second rectangular crystallizer 7 is the parent metal liquid storage chamber 3, and the second rectangular crystallizer 7 is located in the sealed buckled area of ​​the two trough-shaped crystallizers 8 The first thermal insulation layer 5 is arranged on the outer wall surface of each of the crystals; the second thermal insulation layer 6 is arranged on the outer wall surface of the first rectangular crystallizer 7, the inner wall surface of the second rectangular crystallizer 7 and the inner wall surfaces of the two trough-shaped crystallizers 8; the parent metal liquid storage chamber 3 and the two composite metal liquid storage chambers 4 are fluid-connected with metal diversion ports 9, the upper part of the side wall of the second rectangular crystallizer 7, the upper part of the side wall of the two trough-shaped crystallizers 8 and the top of the first rectangular crystallizer 7 are fluid-connected with cooling water inlet pipes 10, a cooling water outlet is provided on the bottom of the first rectangular crystallizer 7, a water diversion block 14 is installed in the cooling water outlet, a drainage hole 12 corresponding to the conical diversion block is provided on the support plate 1, a cooling water outlet pipe 11 is fluid-connected at the lower part of the side wall of the second rectangular crystal, and the bottoms of the two trough-shaped crystallizers 8 are also fluid-connected with cooling water outlet pipes 11, and the two cooling water outlet pipes 11 are inclined toward the direction of the composite metal ingot.

[0048] First, prepare three kinds of metal melts for heat preservation and standby, assemble two rectangular crystallizers and two trough crystallizers, start the traction mechanism 2 to rise, so that the support plate 1 on it is in close contact with the bottom of the crystallizer and closes the cavity surrounded by the crystallizer. Install a fixing frame on the upper end of the crystallizer. Set the first insulation layer 5 and the second insulation layer 6 at the corresponding positions. And connect the cooling water inlet pipe 10 to the cooling water source.

[0049] When the crystallizer is installed in place and all the cooling water circulations of the crystallizer are normal, molten metal is added to each crystallizer. When the liquid level reaches a certain height, the traction mechanism 2 is turned on to drive the support plate 1 to descend, and at the same time drive the ingot to move downward out of the crystallizer. This stable casting process is maintained until the ingot reaches the required height, and the addition of molten metal is stopped. After the ingot is completely out of the crystallizer, the cooling water and traction mechanism 2 are turned off, and the ingot is unloaded. The casting process is completed to obtain a three-layer composite metal plate hollow ingot.

[0050] Example 4

[0051] In this embodiment, a crystallizer is used for casting a double-layer composite round ingot, such as Figure 13-15 As shown, the first crystallizer and the second crystallizer are both circular crystallizers 13, the diameter of the second circular crystallizer 13 is larger than the diameter of the first circular crystallizer 13, the second circular crystallizer 13 is sleeved on the first circular crystallizer 13, the space between the first circular crystallizer 13 and the second circular crystallizer 13 is a composite metal liquid storage chamber 4, the space inside the first circular crystallizer 13 is a parent metal liquid storage chamber 3, the outer wall surface of the first circular crystallizer 13 is provided with a first insulation layer 5, the inner wall surface of the second circular crystallizer 13 and the inner wall surface of the first circular crystallizer 13 are both provided with a second Insulation layer 6; the parent metal liquid storage chamber 3 and the composite metal liquid storage chamber 4 are both fluid-connected with metal diversion ports 9; the upper side wall of the second circular crystallizer 13 is fluid-connected with a cooling water inlet pipe 10, and the bottom of the second circular crystallizer 13 is provided with a cooling water outlet pipe 11 along its circumference, and the outlet of the cooling water outlet pipe 11 is inclined toward the axis of the first circular crystallizer 13; one side of the top of the first circular crystallizer 13 is fluid-connected with a cooling water outlet pipe 11, and the other side of the top of the first circular crystallizer 13 is also fluid-connected with a cooling water inlet pipe 10, and a valve is installed on the cooling water inlet pipe 10.

[0052] First, prepare two kinds of metal melts for heat preservation and standby, coaxially combine and fix two circular crystallizers 13 with different diameters, start the traction mechanism 2 to rise, so that the support plate 1 on it is in close contact with the bottom of the crystallizer and closes the cavity surrounded by the crystallizer. Install a fixing frame on the upper end of the crystallizer. Install the first insulation layer 5 and the second insulation layer 6 at the corresponding position of the circular crystallizer 13. Connect the cooling water inlet pipe 10 to the cooling water source. Adjust the cooling water inlet pipe valve to achieve the cooling water flow required by each crystallizer.

[0053] When the crystallizer is installed in place and all the cooling water circulation of the crystallizer is normal, molten metal is added to each crystallizer cavity. When the liquid level reaches a certain height, the traction mechanism 2 is turned on to drive the support plate 1 to descend, and at the same time drive the ingot to move downward from the crystallizer. This stable casting process is maintained until the ingot reaches the required height, and the addition of molten metal is stopped. After the ingot is completely out of the crystallizer, the cooling water and traction mechanism 2 are turned off, the ingot is unloaded, and the casting process is completed to obtain a double-layer composite metal round ingot.

[0054] Example 5

[0055] In this embodiment, on the basis of embodiment 4, a smaller circular crystallizer is installed in the internal circular crystallizer 13 to cast a double-layer composite hollow round ingot. The crystallizer for casting the double-layer composite hollow round ingot is as follows: Figure 16-17As shown, the number of the first crystallizers is two, the number of the second crystallizers is one, the two first crystallizers and the one second crystallizer are both circular crystallizers 13, the two first crystallizers are respectively the first circular crystallizer 13 and the second circular crystallizer 13, the second crystallizer is the third circular crystallizer 13, the second circular crystallizer 13 is installed in the third circular crystallizer 13, the first circular crystallizer 13 is installed in the second circular crystallizer 13, the space between the first circular crystallizer 13 and the second circular crystallizer 13 is the parent metal liquid storage chamber 3, the space between the second circular crystallizer 13 and the third circular crystallizer 13 is the composite metal liquid storage chamber 4, the outer wall surface of the first circular crystallizer 13, the inner wall surface of the second circular crystallizer 13 and the inner wall surface of the third circular crystallizer 13 are all provided with a second thermal insulation layer 6, the second circular crystallizer 13 is ... A first thermal insulation layer 5 is provided on the outer wall surface of the crystallizer 13; the metal liquid storage chamber and the composite metal liquid storage chamber 4 are both fluid-connected with metal guide pipes, the top of the first circular crystallizer 13, the top of the second circular crystallizer 13 and the side wall of the third circular crystallizer 13 are all fluid-connected with cooling water inlet pipes 10, and a valve is installed on the cooling water inlet pipe 10; a cooling water outlet is provided on the bottom of the first circular crystallizer 13, and a water dividing block 14 is installed in the cooling water outlet; a drainage hole 12 corresponding to the position of the water dividing block 14 is provided on the support plate 1; a cooling water outlet pipe 11 is fluid-connected on the top of the second circular crystallizer 13, and cooling water outlet pipes 11 are also fluid-connected on both sides of the bottom of the third circular crystallizer 13; the outlets of the two cooling water outlet pipes 11 located at the bottom of the third circular crystallizer 13 are inclined toward the axis of the third circular crystallizer 13.

[0056] First, prepare two kinds of metal melts for heat preservation and standby use, assemble three circular crystallizers 13, and raise the traction mechanism 2 so that the support plate 1 on it is in close contact with the bottom of the crystallizer and closes the cavity surrounded by the crystallizer. Install a fixing frame on the upper end of the crystallizer. Install the first insulation layer 5 and the second insulation layer 6 at the corresponding positions of the crystallizer. Connect the cooling water inlet pipe 10 to the cooling water source.

[0057] When the crystallizer is installed in place and all the cooling water circulation of the crystallizer is normal, molten metal is added to the cavity surrounded by each crystallizer. When the liquid level reaches a certain height, the traction mechanism 2 is turned on to drive the support plate 1 to descend, and at the same time drive the ingot to move downward from the crystallizer. This stable casting process is maintained until the ingot reaches the required height, and the addition of molten metal is stopped. After the ingot is completely out of the crystallizer, the cooling water and traction device are turned off, and the ingot is unloaded. The casting process is completed to obtain a two-layer composite metal plate hollow ingot.

[0058] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A crystallization system for composite metal ingot casting, characterized in that: The invention comprises at least one first crystallizer and at least one second crystallizer, wherein the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, a support plate (1) is sealed and attached to the outlets of the first crystallizer and the second crystallizer, and the support plate (1) is connected to a traction mechanism (2), and the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber (3) and at least one composite metal liquid storage chamber (4), wherein the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are isolated from each other, and a first heat insulation layer (5) is provided on the side elevation of the composite metal liquid storage chamber (4) adjacent to the parent metal liquid storage chamber (3), and the bottom wall of the first heat insulation layer (5) is attached to the top wall of the support plate (1); A second thermal insulation layer (6) is provided on the side wall surface of the parent metal liquid storage chamber (3), and a second thermal insulation layer (6) is also provided on the side wall surface of the composite metal liquid storage chamber (4) away from the parent metal liquid storage chamber (3), and the distance from the bottom of the second thermal insulation layer (6) to the support plate (1) is greater than zero; The number of the first crystallizers and the number of the second crystallizers are both one, the first crystallizer is a rectangular crystallizer (7), the second crystallizer is a trough crystallizer (8), one side of the trough crystallizer (8) is provided with an opening, the side of the trough crystallizer (8) provided with the opening is arranged toward the side wall of the rectangular crystallizer (7), and the side wall surface of the trough crystallizer (8) having the opening is fixedly connected to the side wall of the rectangular crystallizer (7), after the trough crystallizer (8) is connected to the rectangular crystallizer (7), the space inside the trough crystallizer (8) forms a composite metal liquid storage chamber (4), the space inside the rectangular crystallizer (7) is a parent metal liquid storage chamber (3), the composite metal liquid storage chamber (4) is provided with the first thermal insulation layer (5), and the first thermal insulation layer (5) is attached to the outer wall surface of the rectangular crystallizer (7), and the second thermal insulation layer (6) is provided on the inner wall surface of the trough crystallizer (8) and the inner wall surface of the rectangular crystallizer (7); The upper part of the rectangular crystallizer (7) and the upper part of the trough-shaped crystallizer (8) are both fluid-conducted with a metal flow guide port (9); the side wall of the rectangular crystallizer (7) and the side wall of the trough-shaped crystallizer (8) are both fluid-conducted with a cooling water inlet pipe (10), and a valve is installed on the cooling water inlet pipe (10); the bottom of the rectangular crystallizer (7) and the bottom of the trough-shaped crystallizer (8) are both fluid-conducted with a cooling water outlet pipe (11), and the outlet of the cooling water outlet pipe (11) is inclined toward the direction of the composite metal ingot.

2. A crystallization system for composite metal ingot casting, characterized in that: The invention comprises at least one first crystallizer and at least one second crystallizer, wherein the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, a support plate (1) is sealed and attached to the outlets of the first crystallizer and the second crystallizer, and the support plate (1) is connected to a traction mechanism (2), and the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber (3) and at least one composite metal liquid storage chamber (4), wherein the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are isolated from each other, and a first heat insulation layer (5) is provided on the side elevation of the composite metal liquid storage chamber (4) adjacent to the parent metal liquid storage chamber (3), and the bottom wall of the first heat insulation layer (5) is attached to the top wall of the support plate (1); A second thermal insulation layer (6) is provided on the side wall surface of the parent metal liquid storage chamber (3), and a second thermal insulation layer (6) is also provided on the side wall surface of the composite metal liquid storage chamber (4) away from the parent metal liquid storage chamber (3), and the distance from the bottom of the second thermal insulation layer (6) to the support plate (1) is greater than zero; The number of the first crystallizers is one, the number of the second crystallizers is two, the first crystallizer is a rectangular crystallizer (7), the two second crystallizers are both trough-shaped crystallizers (8), the two trough-shaped crystallizers (8) are symmetrically sealed and buckled on opposite side walls of the rectangular crystallizer (7) to form two independent composite molten metal storage chambers (4), the inner space of the trough-shaped crystallizer (8) is a parent metal molten metal storage chamber (3), the outer wall surface of the rectangular crystallizer (7) located in the sealed buckled area of ​​the two trough-shaped crystallizers (8) is provided with a first heat insulation layer (5), and the inner wall surfaces of the two trough-shaped crystallizers (8) and the inner wall surface of the rectangular crystallizer (7) are provided with a second heat insulation layer (6); The upper part of the rectangular crystallizer (7) and the upper parts of the two trough-shaped crystallizers (8) are both fluid-connected with metal flow guide ports (9); the upper parts of the side walls of the two trough-shaped crystallizers (8) and the upper parts of the side walls of the rectangular crystallizer (7) are both fluid-connected with cooling water inlet pipes (10), and valves are installed on the cooling water inlet pipes (10); the bottoms of the two trough-shaped crystallizers (8) are both fluid-connected with cooling water outlet pipes (11), and the two cooling water outlet pipes (11) are inclined toward the direction of the composite metal ingot; the lower part of the side wall of the rectangular crystallizer (7) is also fluid-connected with a cooling water outlet pipe (11).

3. A crystallization system for composite metal ingot casting, characterized in that: The invention comprises at least one first crystallizer and at least one second crystallizer, wherein the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, a support plate (1) is sealed and attached to the outlets of the first crystallizer and the second crystallizer, and the support plate (1) is connected to a traction mechanism (2), and the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber (3) and at least one composite metal liquid storage chamber (4), wherein the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are isolated from each other, and a first heat insulation layer (5) is provided on the side elevation of the composite metal liquid storage chamber (4) adjacent to the parent metal liquid storage chamber (3), and the bottom wall of the first heat insulation layer (5) is attached to the top wall of the support plate (1); A second thermal insulation layer (6) is provided on the side wall surface of the parent metal liquid storage chamber (3), and a second thermal insulation layer (6) is also provided on the side wall surface of the composite metal liquid storage chamber (4) away from the parent metal liquid storage chamber (3), and the distance from the bottom of the second thermal insulation layer (6) to the support plate (1) is greater than zero; The number of the first crystallizers and the number of the second crystallizers are both two, the two first crystallizers are both rectangular crystallizers (7), the two second crystallizers are both trough-shaped crystallizers (8), the two trough-shaped crystallizers (8) are symmetrically sealed and buckled on the opposite side walls of the rectangular crystallizer (7) to form two independent composite molten metal storage chambers (4), the two rectangular crystallizers (7) are respectively a first rectangular crystallizer (7) and a second rectangular crystallizer (7), the size of the second rectangular crystallizer (7) is larger than the size of the first rectangular crystallizer (7), the first rectangular crystallizer (7) is installed in the second rectangular crystallizer (7), the space between the first rectangular crystallizer (7) and the second rectangular crystallizer (7) is the parent metal molten metal storage chamber (3), the first thermal insulation layer (5) is provided on the outer wall of the second rectangular crystallizer (7) located in the sealed buckled area of ​​the two trough-shaped crystallizers (8), the first rectangular crystallizer (7) A second heat insulating layer (6) is provided on the outer wall surface of the second rectangular crystallizer (7), the inner wall surface of the second rectangular crystallizer (7) and the inner wall surfaces of the two trough-shaped crystallizers (8); the parent metal liquid storage chamber (3) and the two composite metal liquid storage chambers (4) are both fluidly connected with metal guide ports (9); the upper part of the side wall of the second rectangular crystallizer (7), the upper parts of the side walls of the two trough-shaped crystallizers (8) and the top of the first rectangular crystallizer (7) are both fluidly connected with cooling water inlet pipes (10); the bottom of the first rectangular crystallizer (7) is provided with a cooling water outlet, in which a water dividing block (14) is installed; the support plate (1) is provided with a drainage hole (12) corresponding to the conical flow dividing block; the lower part of the side wall of the second rectangular crystallizer is fluidly connected with a cooling water outlet pipe (11); the bottoms of the two trough-shaped crystallizers (8) are also fluidly connected with cooling water outlet pipes (11); the two cooling water outlet pipes (11) are inclined toward the direction of the composite metal ingot.

4. A crystallization system for composite metal ingot casting, characterized in that: The invention comprises at least one first crystallizer and at least one second crystallizer, wherein the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, a support plate (1) is sealed and attached to the outlets of the first crystallizer and the second crystallizer, and the support plate (1) is connected to a traction mechanism (2), and the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber (3) and at least one composite metal liquid storage chamber (4), wherein the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are isolated from each other, and a first heat insulation layer (5) is provided on the side elevation of the composite metal liquid storage chamber (4) adjacent to the parent metal liquid storage chamber (3), and the bottom wall of the first heat insulation layer (5) is attached to the top wall of the support plate (1); A second thermal insulation layer (6) is provided on the side wall surface of the parent metal liquid storage chamber (3), and a second thermal insulation layer (6) is also provided on the side wall surface of the composite metal liquid storage chamber (4) away from the parent metal liquid storage chamber (3), and the distance from the bottom of the second thermal insulation layer (6) to the support plate (1) is greater than zero; The first crystallizer and the second crystallizer are both circular crystallizers (13); the diameter of the second circular crystallizer (13) is larger than the diameter of the first circular crystallizer (13); the second circular crystallizer (13) is sleeved on the first circular crystallizer (13); the space between the first circular crystallizer (13) and the second circular crystallizer (13) is a composite metal liquid storage chamber (4); the space inside the first circular crystallizer (13) is a parent metal liquid storage chamber (3); a first heat insulation layer (5) is provided on the outer wall surface of the first circular crystallizer (13); and a second heat insulation layer (5) is provided on the inner wall surface of the second circular crystallizer (13) and the inner wall surface of the first circular crystallizer (13). (6); the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are both fluid-conducted with metal guide ports (9); the upper side wall of the second circular crystallizer (13) is fluid-conducted with a cooling water inlet pipe (10), and the bottom of the second circular crystallizer (13) is provided with a cooling water outlet pipe (11) along its circumference, and the outlet of the cooling water outlet pipe (11) is inclined toward the axis of the first circular crystallizer (13); one side of the top of the first circular crystallizer (13) is fluid-conducted with a cooling water outlet pipe (11), and the other side of the top of the first circular crystallizer (13) is also fluid-conducted with a cooling water inlet pipe (10), and a valve is installed on the cooling water inlet pipe (10).

5. A crystallization system for composite metal ingot casting, characterized in that: The invention comprises at least one first crystallizer and at least one second crystallizer, wherein the outlets of the first crystallizer and the second crystallizer are flush and located in the same horizontal plane, a support plate (1) is sealed and attached to the outlets of the first crystallizer and the second crystallizer, and the support plate (1) is connected to a traction mechanism (2), and the first crystallizer and the second crystallizer are combined to form at least one parent metal liquid storage chamber (3) and at least one composite metal liquid storage chamber (4), wherein the parent metal liquid storage chamber (3) and the composite metal liquid storage chamber (4) are isolated from each other, and a first heat insulation layer (5) is provided on the side elevation of the composite metal liquid storage chamber (4) adjacent to the parent metal liquid storage chamber (3), and the bottom wall of the first heat insulation layer (5) is attached to the top wall of the support plate (1); A second thermal insulation layer (6) is provided on the side wall surface of the parent metal liquid storage chamber (3), and a second thermal insulation layer (6) is also provided on the side wall surface of the composite metal liquid storage chamber (4) away from the parent metal liquid storage chamber (3), and the distance from the bottom of the second thermal insulation layer (6) to the support plate (1) is greater than zero; The number of the first crystallizers is two, the number of the second crystallizers is one, the two first crystallizers and the one second crystallizer are all circular crystallizers (13), the two first crystallizers are respectively a first circular crystallizer (13) and a second circular crystallizer (13), the second crystallizer is a third circular crystallizer (13), the second circular crystallizer (13) is installed in the third circular crystallizer (13), the first circular crystallizer (13) is installed in the second circular crystallizer (13), the space between the first circular crystallizer (13) and the second circular crystallizer (13) is a parent metal liquid storage chamber (3), the space between the second circular crystallizer (13) and the third circular crystallizer (13) is a composite metal liquid storage chamber (4), the outer wall surface of the first circular crystallizer (13), the inner wall surface of the second circular crystallizer (13) and the inner wall surface of the third circular crystallizer (13) are all provided with a second heat insulating layer (6), the second circular crystallizer ( 13) is provided with a first heat insulating layer (5); the parent metal liquid storage chamber and the composite metal liquid storage chamber (4) are both fluidly connected with metal guide pipes; the top of the first circular crystallizer (13), the top of the second circular crystallizer (13) and the side wall of the third circular crystallizer (13) are both fluidly connected with cooling water inlet pipes (10), a valve is installed on the cooling water inlet pipe (10), and the bottom of the first circular crystallizer (13) is provided with a cooling water outlet. A water dividing block (14) is installed in the cooling water outlet, a drainage hole (12) corresponding to the position of the water dividing block (14) is opened on the support plate (1), a cooling water outlet pipe (11) is fluid-conducted on the top of the second circular crystallizer (13), and cooling water outlet pipes (11) are also fluid-conducted on both sides of the bottom of the third circular crystallizer (13), and the outlets of the two cooling water outlet pipes (11) located at the bottom of the third circular crystallizer (13) are inclined toward the axis of the third circular crystallizer (13).

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