CN116274915A - Ingot casting device and method for smelting bottom drop-down crystallization by utilizing water-cooled crucible - Google Patents

Ingot casting device and method for smelting bottom drop-down crystallization by utilizing water-cooled crucible Download PDF

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Publication number
CN116274915A
CN116274915A CN202310303698.3A CN202310303698A CN116274915A CN 116274915 A CN116274915 A CN 116274915A CN 202310303698 A CN202310303698 A CN 202310303698A CN 116274915 A CN116274915 A CN 116274915A
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China
Prior art keywords
water
casting
furnace chamber
crucible
copper crucible
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Pending
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CN202310303698.3A
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Chinese (zh)
Inventor
李佳
李海涛
李庚�
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Xi'an Huayu Dingzun New Material Technology Co ltd
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Xi'an Huayu Dingzun New Material Technology Co ltd
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Priority to CN202310303698.3A priority Critical patent/CN116274915A/en
Publication of CN116274915A publication Critical patent/CN116274915A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/141—Plants for continuous casting for vertical casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/0806—Charging or discharging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/10—Crucibles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B2014/008—Continuous casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F27B2014/045—Vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Abstract

The invention relates to the technical field of metal smelting, in particular to an ingot casting device and a mode for utilizing a water-cooling crucible to smelt bottom drop crystallization, comprising a furnace chamber and a furnace chamber door, wherein the furnace chamber door is arranged on one side of the furnace chamber, a furnace cover is arranged at the top end of the furnace chamber, a water-cooling copper crucible is arranged on the inner side of the furnace chamber, a cutting seam is cut on the water-cooling copper crucible, the water-cooling copper crucible is internally arranged in a polygonal or circular shape, a condensing casting mold is arranged at the bottom end of the water-cooling copper crucible, a condensing casting device is arranged at the bottom end of the condensing casting mold, an induction coil is arranged at the outer side of the upper end of the water-cooling copper crucible, and a crucible cooling water jacket is arranged at the outer side of the lower end of the water-cooling copper crucible; according to the invention, the ingot is easier to discharge when being downwards guided, the material loss rate is effectively reduced, the density of the downwards guided ingot is better after the shrinkage of the crucible opening, and the material performance is more excellent; and the downward-guiding cast ingot is formed at one time, which is superior to the traditional cast ingot forming mode, and solves the problems of shrinkage porosity, air holes and the like of the traditional cast ingot.

Description

Ingot casting device and method for smelting bottom drop-down crystallization by utilizing water-cooled crucible
Technical Field
The invention relates to the technical field of metal smelting, in particular to an ingot casting device and a mode for smelting bottom drop-down crystallization by using a water-cooled crucible.
Background
Cold crucible smelting is a method for carrying out vacuum induction smelting on materials by adopting a water-cooling split copper crucible; the copper crucible is split for avoiding the shielding effect of the conductive crucible on the electromagnetic field; the purpose of water cooling is to keep the temperature of the crucible wall in a cold state, and avoid physical and chemical reactions between the molten material and the crucible in a molten pool, and the cold crucible smelting technology avoids the pollution of crucible materials to the molten pool and eliminates the limitation of the crucible materials to the smelting temperature, so the water cooling method is particularly suitable for smelting active metals and alloys, refractory metals and alloys and high-purity and ultra-pure metals and alloys; however, ingot blanks prepared by the gravity casting technology after traditional cold crucible smelting may generate defects such as shrinkage cavities, pores, looseness, cracks and the like, and the casting defects are generated because the liquid metal is cooled and solidified in a casting mould from outside to inside, the outer layer forms solidified materials first, the inner layer is still the liquid metal which is not solidified yet, namely, the outer layer forms a hard solid shell first, and insufficient material is fed when the inner layer is solidified, so that holes and stress are formed; to eliminate the casting defects, special designs can be given to the casting device, for example, setting a specific temperature field, designing an extrusion casting structure, etc. However, these designs are relatively complicated in structure and cannot completely eliminate the casting defect, and therefore, an ingot casting apparatus and method for melting a bottom-down crystal by a water-cooled crucible have been proposed to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an ingot casting device and a method for smelting a bottom drop-down crystal by utilizing a water-cooled crucible, so as to completely eliminate casting defects of ingot blanks, realize continuous dummy ingot process for improving dummy ingot speed and ensure stability of dummy ingot process.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides an utilize water-cooling crucible to smelt ingot casting device and mode of bottom drop-down crystallization, includes furnace chamber and furnace chamber door, the furnace chamber door is installed to one side of furnace chamber, the bell is installed on the top of furnace chamber, water-cooling copper crucible is installed to the inboard of furnace chamber, the cutting has the joint cutting on the water-cooling copper crucible, and water-cooling copper crucible inside polygon or circular setting, the condensation casting mould is installed to the bottom of water-cooling copper crucible, the condensation casting device is installed to the bottom of condensation casting mould, induction coil is installed in the outside of water-cooling copper crucible upper end, crucible cooling water jacket is installed in the outside of water-cooling copper crucible lower extreme.
Preferably, the furnace chamber door is connected with the furnace chamber in a sealing way when being closed, and the furnace chamber is integrated with a vacuumizing structure.
Preferably, the water-cooled copper crucible is in an inverted cone shape, the middle part of the water-cooled copper crucible is provided with a round corner, and the inner diameter of the bottom end of the water-cooled copper crucible is equal to the outer diameter of the condensing die-casting mold.
Preferably, a rotary feeding table is arranged on one side of the furnace chamber, a granule feeding device is arranged on one side of the rotary feeding table, a bar feeding device is arranged on the other side of the rotary feeding table, and bar is arranged on the lower side of the bar feeding device.
Preferably, one end of the furnace chamber is provided with a pull-down cutting device, and the other end of the furnace chamber is provided with a material taking manipulator.
Preferably, a real-time monitoring device for casting is installed at one side of the condensing casting mold, and a host of the real-time monitoring device for casting is arranged at the outer side of the furnace chamber.
An ingot casting mode for smelting a bottom drop-down crystal by utilizing a water-cooled crucible comprises the following steps:
step one: pretreatment: firstly, a condensing die casting mould is lifted into a water-cooled copper crucible through a condensing die casting device, then raw materials required for pulling down crystallization die casting are added into the water-cooled copper crucible, then a furnace chamber is fully sealed, a furnace cover is closed, a furnace chamber door is closed, the interior of the furnace chamber is vacuumized, air is removed, and the pollution of the atmosphere or oxygen to the raw materials is avoided;
step two: smelting: then when the vacuum degree in the furnace chamber meets the requirement of smelted raw materials, a power supply is started, an induction coil is electrified, raw materials in a water-cooled copper crucible are heated in an electromagnetic induction mode until the raw materials are completely molten into molten metal, after the raw materials are completely molten, the molten metal is brought out by downwards moving a condensing die-casting mold of a condensing die-casting device, after the molten metal downwards moves out of the range of the induction coil, the molten metal is quickly solidified through a crucible cooling water jacket at the bottom of the water-cooled copper crucible, so that a downwards-guided cast ingot is formed;
step three: and (3) charging treatment: in the process of carrying out the down-casting crystallization ingot casting, as the molten raw materials in the water-cooled copper crucible are continuously reduced, the raw materials need to be fed to achieve the effect of casting and feeding simultaneously, the middle lower part of the water-cooled copper crucible is in a material casting solidification state, the upper part of the water-cooled copper crucible is in a casting material melting state, when the raw materials are fed, a proper feeding mode is selected according to the state of the raw materials, if the raw materials are granular materials, a granular material feeding device is rotated to a designated position above the water-cooled copper crucible through a rotary feeding table, the required raw materials are fed into the water-cooled copper crucible through adjusting the granular material feeding device, and after electromagnetic induction of an induction coil, the raw materials are melted to the melting state, and the down-casting is continuously completed;
step four: and (3) material taking treatment: after the raw materials are completely consumed, the condensing casting device drives the condensing casting die to move downwards to a designated position, then the downward casting ingot also reaches the designated position, then the material taking manipulator stretches out to grasp the formed downward casting ingot, at the moment, the downward casting device stretches out to cut the downward casting ingot reaching the designated position, after the cutting is completed, the material taking manipulator moves the cut downward casting ingot to the designated position in the furnace chamber, and cooling is started;
step five: reset processing: the condensing casting device pushes the condensing casting mould to return to the water-cooled copper crucible, the bar feeding device starts feeding materials into the water-cooled copper crucible, the induction coil starts to be electrified, and the materials are melted, so that one working cycle is completed.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arranged bar material feeding device, the rotary feeding table and the particle material feeding device, the feeding modes are more diversified, and a proper feeder can be selected according to the state of provided materials;
2. according to the invention, through the arranged inverted conical water-cooled copper crucible, the ingot is easier to discharge during downward casting, the material loss rate is effectively reduced, and the ingot formed by downward casting has better compactness and better material performance after the crucible opening is contracted; the downward-guiding cast ingot is formed at one time, which is superior to the traditional cast ingot forming mode, and solves the problems of shrinkage porosity, air holes and the like of the traditional cast ingot;
3. according to the invention, through the condensing casting device, the speed of the downward casting ingot can be regulated, corresponding processes can be designated according to different types of materials, and the loss of manpower and material resources is reduced;
4. according to the invention, the pollution of crucible materials to a molten pool is effectively eliminated through the water-cooled copper crucible, so that high-purity and high-purity materials and materials with very uniform and accurate compositions can be prepared;
5. according to the invention, when the cast ingot formed by downward drawing passes through the bottom of the crucible, the cast ingot can be quickly solidified and formed through the crucible cooling water jacket arranged at the bottom of the crucible, and the solidification structure can be thinned, so that the grains in the cast ingot are thinned;
6. in the invention, after the downwards-formed cast ingot reaches the designated position, the cast ingot is cut off by the downwards-pulling cutting device, and the cut cast ingot is moved to the designated position by the material taking manipulator, so that continuous production operation can be realized, and the production efficiency is greatly improved by downwards-pulling the cast ingot;
7. in the invention, the condensing die-casting mould is provided with the electric monitoring system, so that the state during the downward drawing die-casting can be controlled in real time, and the die-casting efficiency can be greatly improved;
8. according to the invention, the vacuumizing structure on the furnace chamber can ensure that the interior of the furnace chamber is always in a vacuum environment when the crucible device is used for smelting, so that the smelted material can reach a high-purity and ultra-pure state, and the pollution of other impurities such as oxygen in the atmosphere to the smelted raw material and the like to the raw material is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure of the crucible cooling water jacket of the present invention;
FIG. 3 is a schematic view of the state of the ingot guiding according to the present invention;
FIG. 4 is a schematic diagram of the installation structure of the real-time monitoring device for casting of the present invention.
In the figure: 1. a furnace chamber; 2. condensing the casting mold; 3. water-cooling the copper crucible; 4. an induction coil; 5. a furnace cover; 6. a bar stock; 7. a bar stock feeding device; 8. rotating the feeding table; 9. a granule feeding device; 10. condensing and casting device; 11. a furnace chamber door; 12. a crucible cooling water jacket; 13. a material taking manipulator; 14. a pull-down cutting device; 15. and a real-time monitoring device for casting.
Detailed Description
Example 1: referring to fig. 1-4, the present invention provides a technical solution:
an ingot casting device and a method for smelting ingot by using a water-cooled crucible to perform bottom pulling crystallization comprise a furnace chamber 1 and a furnace chamber door 11, wherein the furnace chamber door 11 is arranged on one side of the furnace chamber 1, a furnace cover 5 is arranged at the top end of the furnace chamber 1, a water-cooled copper crucible 3 is arranged on the inner side of the furnace chamber 1, a cutting seam is cut on the water-cooled copper crucible 3, the water-cooled copper crucible 3 is arranged in a polygonal or circular mode, a condensing die-casting mold 2 is arranged at the bottom end of the water-cooled copper crucible 3, a condensing die-casting device 10 is arranged at the bottom end of the condensing die-casting mold 2, an induction coil 4 is arranged on the outer side of the upper end of the water-cooled copper crucible 3, and a crucible cooling water jacket 12 is arranged on the outer side of the lower end of the water-cooled copper crucible 3.
The furnace chamber door 11 is in sealing connection with the furnace chamber 1 when being closed, a vacuumizing structure is integrated on the furnace chamber 1, and the furnace chamber is cooled in the vacuum furnace chamber 1, so that the influence of cast ingot oxidation and other impurities in the atmosphere on the formed cast ingot can be effectively avoided; the water-cooled copper crucible 3 is in an inverted cone shape, the middle part of the water-cooled copper crucible 3 is provided with a round corner, the inner diameter of the bottom end of the water-cooled copper crucible 3 is equal to the outer diameter of the condensing die casting mold 2, the water-cooled copper crucible is easier to discharge when the ingot is downwards guided, the material loss rate is effectively reduced, the ingot formed by downwards guiding is better in compactness after the crucible opening is contracted, and the material performance is more excellent; the downward-guiding cast ingot is formed at one time, which is superior to the traditional cast ingot forming mode, and solves the problems of shrinkage porosity, air holes and the like of the traditional cast ingot; a rotary feeding table 8 is arranged on one side of the furnace chamber 1, a granule feeding device 9 is arranged on one side of the rotary feeding table 8, a bar feeding device 7 is arranged on the other side of the rotary feeding table 8, bar 6 is arranged on the lower side of the bar feeding device 7, and the arrangement enables feeding modes to be more diversified, and a proper feeder can be selected according to the state of provided materials; one end of the furnace chamber 1 is provided with a pull-down cutting device 14, the other end of the furnace chamber 1 is provided with a material taking manipulator 13, after a cast ingot formed by pull-down casting comes out of the water-cooled copper crucible 3 under the action of the lower guide die 2, the material taking manipulator 13 stretches out to grasp the formed cast ingot, the pull-down cutting device 14 stretches out to cut the cast ingot reaching a designated position, after the cutting is completed, the material taking manipulator 13 moves the cut cast ingot to the designated position in the furnace chamber 1, and cooling is started until the cast ingot is cooled to a normal temperature state: the real-time monitoring device 15 for casting is installed on one side of the condensing die 2, and the host of the real-time monitoring device 15 for casting is arranged on the outer side of the furnace chamber 1, and in the process of drawing down and casting, the real-time state of the casting process in the furnace chamber 1 can be known and recorded outside by sending out an electric signal by the real-time monitoring device 15 for casting.
An ingot casting mode for smelting a bottom drop-down crystal by utilizing a water-cooled crucible comprises the following steps:
step one: pretreatment: firstly, a condensation casting mould 2 is lifted into a water-cooled copper crucible 3 through a condensation casting device 10, then raw materials required for pulling down crystallization casting are added into the water-cooled copper crucible 3, then a furnace chamber 1 is fully sealed, a furnace cover 5 is closed, a furnace chamber door 11 is closed, the interior of the furnace chamber 1 is vacuumized, air is removed, and pollution of the atmosphere or oxygen to the raw materials is avoided;
step two: smelting: then when the vacuum degree in the furnace chamber 1 meets the requirement of smelted raw materials, a power supply is started, the induction coil 4 is electrified, the raw materials in the water-cooled copper crucible 3 are heated in an electromagnetic induction mode until the raw materials are completely molten into molten metal, after the raw materials are completely molten, the molten metal is brought out by downwards moving the condensing casting mould 2 of the condensing casting device 10, after the molten metal downwards moves out of the range of the induction coil 4, the molten metal is quickly solidified through the crucible cooling water jacket 12 at the bottom of the water-cooled copper crucible 3, so that a downwards-guided cast ingot is formed;
step three: and (3) charging treatment: in the process of carrying out the down-casting crystallization ingot casting, as the molten raw materials in the water-cooled copper crucible 3 are continuously reduced, the raw materials need to be fed so as to be fed while being cast, the middle lower part of the water-cooled copper crucible 3 is in a material casting solidification state, the upper part of the water-cooled copper crucible is in a casting material melting state, when the raw materials are fed, a proper feeding mode is selected according to the state of the raw materials, if the raw materials are granular materials, the granular material feeding device 9 is rotated to a designated position above the water-cooled copper crucible 3 through the rotary feeding table 8, the required raw materials are fed into the water-cooled copper crucible 3 through adjusting the granular material feeding device 9, and after electromagnetic induction through the induction coil 4, the raw materials are melted to the melting state, and the down-casting is continuously completed;
step four: and (3) material taking treatment: after the raw materials are completely consumed, the condensation casting device 10 drives the condensation casting mold 2 to move downwards to a designated position, then the downward casting ingot also reaches the designated position, then the material taking manipulator 13 stretches out to grasp the formed downward casting ingot, the downward casting device 14 stretches out at the moment to cut the downward casting ingot reaching the designated position, and after the cutting is completed, the material taking manipulator 13 moves the cut downward casting ingot to the designated position in the furnace chamber 1 and starts to cool;
step five: reset processing: the condensing casting device 10 pushes the condensing casting mould 2 to return to the water-cooled copper crucible 3, the bar feeding device 7 starts feeding the material into the water-cooled copper crucible 3, the induction coil 4 starts to be electrified, and the material is melted, so that one working cycle is finished.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.

Claims (7)

1. An ingot casting device for melting a bottom by utilizing a water-cooled crucible and carrying out pulling crystallization comprises a furnace chamber (1) and a furnace chamber door (11), and is characterized in that: the furnace chamber door (11) is installed to one side of furnace chamber (1), bell (5) are installed on the top of furnace chamber (1), water-cooled copper crucible (3) are installed to the inboard of furnace chamber (1), the cutting has the joint seam on water-cooled copper crucible (3), and water-cooled copper crucible (3) inside polygon or circular setting, condensation casting mould (2) are installed to the bottom of water-cooled copper crucible (3), condensation casting device (10) are installed to the bottom of condensation casting mould (2), induction coil (4) are installed in the outside of water-cooled copper crucible (3) upper end, crucible cooling water jacket (12) are installed in the outside of water-cooled copper crucible (3) lower extreme.
2. An ingot casting apparatus for bottom pull-down crystallization by water-cooled crucible melting as set forth in claim 1, wherein: the furnace chamber door (11) is connected with the furnace chamber (1) in a sealing way when being closed, and the furnace chamber (1) is integrated with a vacuumizing structure.
3. An ingot casting apparatus for bottom pull-down crystallization by water-cooled crucible melting as set forth in claim 1, wherein: the water-cooled copper crucible (3) is in an inverted cone shape, the middle part of the water-cooled copper crucible is provided with round corners, and the inner diameter of the bottom end of the water-cooled copper crucible (3) is equal to the outer diameter of the condensing die-casting mould (2).
4. An ingot casting apparatus for bottom pull-down crystallization by water-cooled crucible melting as set forth in claim 1, wherein: a rotary feeding table (8) is arranged on one side of the furnace chamber (1), a granule feeding device (9) is arranged on one side of the rotary feeding table (8), a bar feeding device (7) is arranged on the other side of the rotary feeding table (8), and bar (6) is arranged on the lower side of the bar feeding device (7).
5. An ingot casting apparatus for bottom pull-down crystallization by water-cooled crucible melting as set forth in claim 1, wherein: one end of the furnace chamber (1) is provided with a pull-down cutting device (14), and the other end of the furnace chamber (1) is provided with a material taking manipulator (13).
6. An ingot casting apparatus for bottom pull-down crystallization by water-cooled crucible melting as set forth in claim 1, wherein: one side of the condensing die-casting mould (2) is provided with a die-casting real-time monitoring device (15), and a host of the die-casting real-time monitoring device (15) is arranged at the outer side of the furnace chamber (1).
7. An ingot casting method for melting a bottom drop-down crystal by using a water-cooled crucible according to any one of claims 1 to 6, wherein: the method comprises the following steps:
step one: pretreatment: firstly, a condensing casting mould (2) is lifted into a water-cooling copper crucible (3) through a condensing casting device (10), then raw materials required for pulling down crystallization casting are added into the water-cooling copper crucible (3), then a furnace chamber (1) is fully sealed, a furnace cover (5) is closed, a furnace chamber door (11) is closed, and the interior of the furnace chamber (1) is vacuumized to remove air, so that the pollution of the atmosphere or oxygen to the raw materials is avoided;
step two: smelting: then when the vacuum degree in the furnace chamber (1) meets the requirement of smelted raw materials, a power supply is started, the induction coil (4) is electrified, the raw materials in the water-cooled copper crucible (3) are heated in an electromagnetic induction mode until the raw materials are completely molten, after the raw materials are completely molten, the molten metal is brought out by downwards moving the condensing casting mould (2) of the condensing casting device (10), and after the molten metal downwards moves out of the range of the induction coil (4), the molten metal is quickly solidified through the crucible cooling water jacket (12) at the bottom of the water-cooled copper crucible (3), so that a downwards-guided cast ingot is formed;
step three: and (3) charging treatment: in the process of carrying out the down-casting crystallization ingot, as the molten raw materials in the water-cooled copper crucible (3) are continuously reduced, the raw materials need to be fed so as to be fed while casting, the middle lower part of the water-cooled copper crucible (3) is in a material casting solidification state, the upper part of the water-cooled copper crucible is in a casting material melting state, when feeding, a proper feeding mode is selected according to the state of the raw materials, if the raw materials are granular materials, a granular material feeding device (9) is rotated to a designated position above the water-cooled copper crucible (3) through a rotary feeding table (8), the required raw materials are fed into the water-cooled copper crucible (3) through adjusting the granular material feeding device (9), and after electromagnetic induction through an induction coil (4), the raw materials are melted to the melting state, and the down-drawing casting is continuously completed;
step four: and (3) material taking treatment: after the raw materials are completely consumed, the condensation casting device (10) drives the condensation casting die (2) to move downwards to a designated position, then the downward casting ingot also reaches the designated position, then the material taking manipulator (13) stretches out to grasp the formed downward casting ingot, at the moment, the downward casting cutting device (14) stretches out to cut the downward casting ingot reaching the designated position, and after the cutting is completed, the material taking manipulator (13) moves the cut downward casting ingot to the designated position in the furnace chamber (1) to start cooling;
step five: reset processing: the condensing casting device (10) pushes the condensing casting mould (2) back to the water-cooled copper crucible (3), the bar feeding device (7) starts to feed materials into the water-cooled copper crucible (3), the induction coil (4) starts to be electrified, and materials are melted, so that one working cycle is completed.
CN202310303698.3A 2023-03-27 2023-03-27 Ingot casting device and method for smelting bottom drop-down crystallization by utilizing water-cooled crucible Pending CN116274915A (en)

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CN202310303698.3A CN116274915A (en) 2023-03-27 2023-03-27 Ingot casting device and method for smelting bottom drop-down crystallization by utilizing water-cooled crucible

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