Downward-pulling ingot suspension smelting equipment

Abstract

The invention provides pull-down ingot suspension smelting equipment which comprises a furnace body, a driving structure is installed at the bottom of the furnace body, a feeding device is arranged at the top of the furnace body, the bottom of the feeding device is located in the furnace body, the feeding device comprises a feeding pipe, a heating structure is arranged at the bottom of the feeding pipe, and the heating structure is arranged at the bottom of the feeding pipe. The heating structure comprises a heating crucible, an ingot pulling structure is arranged in the heating crucible, the ingot pulling structure comprises an ingot pulling pipe, and a crystallization pipe is arranged at the bottom of the ingot pulling pipe. According to the lower pull ingot suspension smelting equipment, under the condition that the rotating speed of a servo motor of a driving structure is controllable, a driving rod can be driven through transmission between a first belt wheel and a second belt wheel, so that an ingot pulling structure can be controllably lifted, and feeding is more convenient and faster under auger transmission of a feeding device; and moreover, the cooling water is continuously cooled by eddy current water flow in the water cooling structure, so that the cooling of alloy smelting can be accelerated, and the smelted alloy can be better cooled and formed.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, in particular to a pull-down ingot suspension smelting device. Background Art

[0002] Vacuum electromagnetic induction levitation melting technology uses an electromagnetic field to levitate the molten pool during the vacuum melting process. This process utilizes an alternating electromagnetic field with electromagnetic coil parameters, inducing a current in the metal within the coil. This induced current heats and melts the metal. Simultaneously, the electromagnetic force generated by the interaction between the electromagnetic field and the induced current suspends the molten metal, completely eliminating crucible contamination caused by contact between the melt and the crucible walls. However, insufficient cooling of the alloy during the ingot drawing process can result in poor alloy forming speed and quality. Summary of the Invention

[0003] The object of the present invention is to provide a suspended melting device for a pulled ingot, which can form the alloy after the pulled ingot into high-quality shapes.

[0004] The present invention provides a suspended smelting device for pulled ingots, comprising a furnace body, a driving structure installed at the bottom of the furnace body, a feeding device provided on the top of the furnace body, the bottom of the feeding device being located inside the furnace body, the feeding device comprising a feeding pipe, a heating structure provided at the bottom of the feeding pipe, the heating structure comprising a heating crucible, an ingot pulling structure provided inside the heating crucible, the ingot pulling structure comprising an ingot pulling tube, and a crystallization tube provided at the bottom of the ingot pulling tube.

[0005] As a further optimization scheme, the feeding device includes a first motor, which is installed on a feeding pipe. An auger is provided inside the feeding pipe, and the auger is connected to the output end of the motor. The feeding pipe is located inside the furnace body, and a pre-stored feeding pipe is installed on the outer wall of the feeding pipe located outside the furnace body.

[0006] As a further optimization solution, the heating structure includes a heating crucible, which is connected to the bottom of the feeding tube. The outer wall of the heating crucible is wrapped with an electromagnetic coil, and the outer wall of the heating crucible is connected to the water inlet and outlet pipes.

[0007] As a further optimization solution, the bottom of the heating crucible is provided with an ingot pulling structure, and the ingot pulling structure is installed inside the furnace body through an installation structure. The ingot pulling structure includes a crystallization tube, and the crystallization tube is connected to the inside of the heating crucible. The inside of the crystallization tube is installed with an ingot pulling tube, and the bottom of the ingot pulling tube is connected and installed with a cooling water inlet and outlet.

[0008] As a further optimization scheme, the mounting structure includes a first mounting plate, a second mounting plate and a bottom plate, and the first mounting plate, the second mounting plate and the bottom plate are distributed in sequence from top to bottom, and the first mounting plate and the bottom plate are both connected to the inner wall of the furnace body. Three guide pillars are installed on the surface of the bottom plate, and a conduit is installed on the surface of the second mounting plate, and the conduit is sleeved on the outer wall of the guide pillar.

[0009] As a further optimization scheme, the driving structure includes a servo motor and a screw nut, the servo motor is located at the bottom of the furnace body, and a first pulley is installed at the output end of the servo motor. One end of the driving rod is rotatably connected to the first mounting plate, and the driving rod passes through the interior of the furnace body through a sealed bearing. The screw nut is installed on the second mounting plate, and the driving rod passes through the second mounting plate through the screw nut. The outer wall of the driving rod at the screw nut is processed with a thread, and the thread is threadedly connected to the screw nut. A second pulley is installed on the outer wall of the other end of the driving rod, and the outer walls of the first pulley and the second pulley are covered with belts, and the first pulley and the second pulley are connected by belt transmission.

[0010] As a further optimization solution, the material of the pre-stored feed pipe is nickel-chromium alloy.

[0011] The present invention provides a suspended melting device for a pulled ingot through improvement. Compared with the prior art, the suspended melting device for a pulled ingot has the following improvements and advantages: the speed of the servo motor of the driving structure can be controlled by the transmission between the first pulley and the second pulley, thereby driving the driving rod to make the pulling ingot structure rise and fall in a controllable manner, and the feeding is more convenient under the transmission of the auger of the feeding device, so that the smelted alloy can be cooled and formed more easily, thereby completing the work of metal pulling ingots. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 This is a structural schematic diagram of the present invention in which the driving structure and the ingot pulling structure are installed on the mounting structure;

[0015] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point A.

[0016] Description of reference numerals:

[0017] 1-driving structure, 11-servo motor, 12-first pulley, 13-belt, 14-second pulley, 15-screw nut, 16-thread, 17-driving rod, 2-feeding device, 21-first motor, 3-ingot pulling structure, 31-crystallization tube, 32-ingot pulling tube, 33-gas outlet pipe, 4-furnace body, 5-mounting structure, 51-first mounting plate, 52-second mounting plate, 53-bottom plate, 54-guide column, 55-conduit, 6-heating structure, 61-heating crucible, 62-electromagnetic coil, 63-water inlet and outlet pipes. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, 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 communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0021] See also Figure 1-3The present invention provides a technical solution for a suspended smelting device for a pulled-down ingot, comprising a furnace body 4, which is a device for smelting alloys and is used to load parts and structures used for smelting. A driving structure 1 is installed at the bottom of the furnace body 4, and the driving structure 1 is used to provide power for the pulling-down action when pulling down the ingot. A feeding device 2 is provided at the top of the furnace body 4, and the feeding device 2 is used to feed the alloy to be smelted into the interior of the furnace body 4. The bottom of the feeding device 2 is located inside the furnace body 4, and the feeding device 2 includes a feeding pipe 21, which is the supporting body of the feeding device 2. It is used to load all the parts included in the feeding device 2. A heating structure 6 is provided at the bottom of the feeding tube 21. The heat generated by the heating structure 6 after operation is used to heat and melt the alloy. The heating structure 6 includes a heating crucible 61. The heating crucible 61 is a container for alloy melting. An ingot pulling structure 3 is provided inside the heating crucible 61. The ingot pulling structure 3 is used to pull the alloy ingots after melting. The ingot pulling structure 3 includes an ingot pulling tube 31. A crystallization tube 33 is provided at the bottom of the ingot pulling tube 31. The pulled alloy is inside the crystallization tube 33. After pulling, the alloy inside the crystallization tube 33 is cooled and formed.

[0022] refer to Figure 1 The alloy to be melted is fed into the furnace body 4 through the feeding device 2, and then falls into the heating crucible 61 in the heating structure 6 for heating. After the alloy is heated into liquid, it is mixed and melted. The smelted alloy liquid is suspended in the heating crucible 61 due to electromagnetic reasons. Then the ingot pulling structure 3 starts to pull the ingot. The alloy after pulling the ingot falls into the crystallization tube 31, and the metal inside the crystallization tube 31 is cooled and formed. After the cooling effect, the alloy metal inside the crystallization tube 31 can be better melted and formed. The ingot prepared by the ingot pulling process is dense and free of common casting defects of gravity casting. This is because its solidification process is a bottom-up sequential solidification. The liquid metal is always feeding the solid-liquid interface as it develops upward, so shrinkage cavities, pores, and looseness will not be formed in the drawn ingot; the direction of the temperature difference in the drawn ingot is also from bottom to top. The ingot shrinks axially during the cooling process. Since its upper end is a free end, the thermal stress generated during the cooling process is small, and the probability of cracks is very small.

[0023] In order to add the alloy to be smelted into the interior of the furnace body 4, a feeding device 2 is used to feed the alloy. The feeding device 2 includes a first motor 22. The first motor 22 is a power source for feeding into the interior of the furnace body 4. The first motor 22 is installed on a feeding pipe 21. The molten metal is transported inside the feeding pipe 21. An auger 23 is provided inside the feeding pipe 21. The auger 23 is driven to rotate by the first motor 22 to transport the metal raw material into the interior of the furnace body 4. The auger 23 is connected to the output end of the motor 22. The feeding pipe 21 is located inside the furnace body 4, and a pre-stored feeding pipe 24 is installed on the outer wall of the feeding pipe 21 located outside the furnace body 4.

[0024] Two or more metals that need to be smelted are pre-stored from the pre-stored feed pipe 24, and the materials inside the pre-stored feed pipe 24 are poured into the feeding pipe 21. Then, the first motor 22 drives the auger 23 to rotate after it starts working. After the auger 23 rotates, the metal raw materials are transferred inside the feeding pipe 21 to carry out the feeding work.

[0025] In order to heat the metal, a heating structure 6 is used. The heating structure 6 includes a heating crucible 61. The heating crucible 61 is connected to the bottom of the feeding tube 21. The outer wall of the heating crucible 61 is wrapped with an electromagnetic coil 62. The outer wall of the heating crucible 61 is connected to the water inlet and outlet pipes 63. The water inlet and outlet pipes 63 discharge the hot air pressure generated by the heating. When the electromagnetic coil 62 is energized, it heats the heating dry pot 61. After being heated, the metal inside will be heated into liquid for melting.

[0026] In order to pull metal ingots using the ingot pulling structure 3, the bottom of the heating crucible 61 is provided with the ingot pulling structure 3, and the ingot pulling structure 3 is installed inside the furnace body 4 through the mounting structure 5. The mounting structure 5 is a mounting frame for installing the ingot pulling structure 3. The ingot pulling structure 3 includes a crystallization tube 31. The smelted alloy falls into the interior of the crystallization tube 31. The crystallization tube 33 is connected to the interior of the heating crucible 61. The ingot pulling tube 32 is installed inside the crystallization tube 33. The ingot pulling tube 32 pulls the crystallization tube 33 to pull the ingot. The bottom of the ingot pulling tube 32 is connected to the cooling water inlet and outlet 33, and the cooling water inlet and outlet 33 discharges the air pressure generated by the heat.

[0027] In order to install the ingot pulling structure 3, the mounting structure 5 is used. The mounting structure 5 includes a first mounting plate 51, a second mounting plate 52 and a bottom plate 53. The first mounting plate 51, the second mounting plate 52 and the bottom plate 53 are distributed in sequence from top to bottom. The first mounting plate 51 and the bottom plate 53 are both connected to the inner wall of the furnace body 4. Three guide pillars 54 are installed on the surface of the bottom plate 53. A conduit 55 is installed on the surface of the second mounting plate 52. The conduit 55 is sleeved on the outer wall of the guide pillar 54. The bottom plate 53 is used to install each guide pillar 54. The guide pillar 54 is used to limit the longitudinal movement. The conduit 55 is used for the guide pillar 54 to pass through the second mounting plate 52.

[0028] In order to provide power for the ingot pulling structure 3, the driving structure 1 includes a servo motor 11 and a screw nut 15. The servo motor 11 is located at the bottom of the furnace body 4. The output end of the servo motor 11 is installed with a first pulley 12. One end of the driving rod 17 is rotatably connected to the first mounting plate 51. The driving rod 17 passes through the interior of the furnace body 4 through a sealed bearing. The screw nut 15 is installed on the second mounting plate 52. The driving rod 17 passes through the second mounting plate 52 through the screw nut 15. The outer wall of the driving rod 17 at the screw nut 15 is processed with a thread 16, and the thread 16 is threadedly connected to the screw nut 15. The outer wall of the other end of the driving rod 17 is installed A second pulley 14 is installed, and the outer walls of the first pulley 12 and the second pulley 14 are covered with a belt 13. The first pulley 12 and the second pulley 14 are connected through the belt 13. After the servo motor 11 works, it drives the first pulley 12 to rotate, and the first pulley 12 drives the second pulley 14 to rotate through the belt 13. The second pulley 14 drives the driving rod 17 to rotate. After the driving rod 17 rotates, it drives the thread 16 on its outer wall to rotate. The thread 16 drives the screw nut 15 to rise and fall on the outer wall of the driving rod 17. The screw nut 15 drives the second mounting plate 52 to rise and fall. After the second mounting plate 52 moves, it drives the ingot pulling tube 32 to rise and fall to pull the ingot.

[0029] In order to increase the service life of the pre-stored feed pipe 24, the material of the pre-stored feed pipe 24 is nickel-chromium alloy. Nickel-chromium alloy has good heat resistance and corrosion resistance and is used in high temperature environments.

[0030] Working process: the metal to be melted is poured into the interior of the feeding pipe 21 from the pre-stored feeding pipe 24, and then the first motor 22 drives the auger 23 to rotate after it works. After the auger 23 rotates, the metal raw material is transferred from the inside of the feeding pipe 21 into the interior of the heating crucible. After the electromagnetic coil 62 is energized, the heating dry pot 61 is heated. After the metal inside is heated, it will be heated into liquid for melting. After the servo motor 11 works, it drives the first pulley 12 to rotate. The first pulley 12 drives the second pulley 14 to rotate through the belt 13. The second pulley 14 drives the driving rod 17 to rotate. After the driving rod 17 rotates, it drives the thread 16 on its outer wall to rotate. The thread 16 drives the screw nut 15 to rise and fall on the outer wall of the driving rod 17. The screw nut 15 drives the second mounting plate 52 to rise and fall. After the second mounting plate 52 moves, it drives the ingot pulling tube 32 to rise and fall to pull the ingot. The ingot pulling tube 32 pulls the crystallization tube 33 to pull the ingot. The pulled alloy ingots overlap in the vertical height direction, which can effectively reduce the overall height of the equipment and form the smelted metal ingots.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pull-down ingot suspension melting device, comprising a furnace body (4), characterized in that: A driving structure (1) is installed at the bottom of the furnace body (4), a feeding device (2) is provided at the top of the furnace body (4), the bottom of the feeding device (2) is located inside the furnace body (4), the feeding device (2) includes a feeding pipe (21), a heating structure (6) is provided at the bottom of the feeding pipe (21), the heating structure (6) includes a heating crucible (61), an ingot pulling structure (3) is provided inside the heating crucible (61), the ingot pulling structure (3) includes an ingot pulling tube (31), a crystallization tube (33) is provided at the bottom of the ingot pulling tube (31), and a cooling structure (4) is installed on the crystallization tube (33).

2. The pull-down ingot suspension melting equipment according to claim 1, characterized in that: The feeding device (2) comprises a first motor (22), the first motor (22) being mounted on a feeding pipe (21), an auger (23) being provided inside the feeding pipe (21), the auger (23) being connected to the output end of the motor (22), the feeding pipe (21) being located inside the furnace body (4), and a pre-stored feeding pipe (24) being mounted on the outer wall of the feeding pipe (21) located outside the furnace body (4).

3. The pull-down ingot suspension melting equipment according to claim 2, characterized in that: The heating structure (6) includes a heating crucible (61), the heating crucible (61) is connected to the bottom of the feeding pipe (21), the outer wall of the heating crucible (61) is wound with an electromagnetic coil (62), and the outer wall of the heating crucible (61) is connected to the water inlet and outlet pipes (63).

4. The pull-down ingot suspension melting equipment according to claim 3, characterized in that: The bottom of the heating crucible (61) is provided with an ingot pulling structure (3), and the ingot pulling structure (3) is installed inside the furnace body (4) through the installation structure (5). The ingot pulling structure (3) includes a crystallization tube (31), and the crystallization tube (33) is connected to the inside of the heating crucible (61). The ingot pulling tube (32) is installed inside the crystallization tube (33), and the bottom of the ingot pulling tube (32) is connected and installed with a cooling water inlet and outlet (33).

5. The pull-down ingot suspension melting equipment according to claim 4, characterized in that: The mounting structure (5) comprises a first mounting plate (51), a second mounting plate (52) and a bottom plate (53), wherein the first mounting plate (51), the second mounting plate (52) and the bottom plate (53) are sequentially arranged from top to bottom, and the first mounting plate (51) and the bottom plate (53) are both connected to the inner wall of the furnace body (4), three guide pillars (54) are mounted on the surface of the bottom plate (53), and a conduit (55) is mounted on the surface of the second mounting plate (52), and the conduit (55) is sleeved on the outer wall of the guide pillar (54).

6. The pull-down ingot suspension melting equipment according to claim 5, characterized in that: The driving structure (1) includes a servo motor (11) and a lead screw nut (15), wherein the servo motor (11) is located at the bottom of the furnace body (4), and a first pulley (12) is installed at the output end of the servo motor (11). One end of the driving rod (17) is rotatably connected to the first mounting plate (51), and the driving rod (17) penetrates into the interior of the furnace body (4) through a sealed bearing. The lead screw nut (15) is installed on the second mounting plate (52), and the driving rod (17) is connected to the first mounting plate (51) through a lead screw nut (15). The screw nut (15) passes through the second mounting plate (52), and the outer wall of the driving rod (17) located at the screw nut (15) is processed with a thread (16), and the thread (16) is threadedly connected to the screw nut (15). The outer wall of the other end of the driving rod (17) is installed with a second pulley (14), and the outer walls of the first pulley (12) and the second pulley (14) are covered with a belt (13), and the first pulley (12) and the second pulley (14) are connected through the belt (13).

7. The pull-down ingot suspension melting equipment according to claim 5, characterized in that: The material of the pre-stored feed pipe (24) is nickel-chromium alloy.

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