CN113770317A - Efficient electromagnetic casting device and using method - Google Patents
Efficient electromagnetic casting device and using method Download PDFInfo
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- CN113770317A CN113770317A CN202111038282.0A CN202111038282A CN113770317A CN 113770317 A CN113770317 A CN 113770317A CN 202111038282 A CN202111038282 A CN 202111038282A CN 113770317 A CN113770317 A CN 113770317A
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- 238000005266 casting Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 94
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 44
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000009749 continuous casting Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 12
- 230000005674 electromagnetic induction Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 3
- 150000004706 metal oxides Chemical class 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011214 refractory ceramic Substances 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/049—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
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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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/182—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by measuring temperature
Abstract
The invention relates to a high-efficiency electromagnetic casting device, which comprises an electromagnetic liquid lifter, a machine tool and a forming die connected with the machine tool, wherein the axis of the electromagnetic liquid lifter is vertically distributed with a horizontal plane, the upper end surface of the electromagnetic liquid lifter is communicated with the forming die, the lower end surface of the electromagnetic liquid lifter is positioned at least 5 cm above a workbench of the machine tool, the electromagnetic liquid lifter is electrically connected with a control circuit of the machine tool, and the electromagnetic liquid lifter comprises a high-temperature-resistant ceramic tube, a bearing tray, a conical sleeve, an electromagnetic driving coil, an electromagnetic coil, a positive electrode, a negative electrode and a conductive non-stick aluminum lining layer. The using method comprises two steps of equipment assembly, casting operation and the like. On one hand, the invention can effectively meet the requirements of various casting parts and metal materials for realizing continuous casting operation; on the other hand, in the casting operation process, the system has high automation degree of system operation, can effectively eliminate the influence of metal oxide skin and condensation residues on the quality of the casting, and has high working precision of casting processing operation and good surface quality of the cast workpiece.
Description
Technical Field
The invention relates to a high-efficiency electromagnetic casting device and a using method thereof, belonging to the technical field of casting processing.
Background
In the actual processing operation, when the current traditional electromagnetic casting equipment runs, on one hand, the current traditional electromagnetic casting equipment cannot effectively overcome the defect that a large amount of oxide skin is formed in the casting process of high-temperature metal, so that the fault is easily caused by the attachment of the oxide skin on the surface of the electromagnetic casting equipment during running, and meanwhile, the casting is easily seriously affected by the addition of the oxide skin, so that the continuity and stability of the electromagnetic casting operation are relatively poor, the operation and maintenance cost of the equipment is high, and the difficulty is high; on the other hand, when the current electromagnetic casting equipment runs, the driving force of the electromagnetic casting equipment to the molten metal is driven by the electromagnetic pump, so that the electromagnetic casting equipment is required to be kept in a high-temperature molten state all the time when running, the service life of the electromagnetic pump and the liquid lifting pipe is very easy to be shortened due to the continuous high-temperature state, meanwhile, the electromagnetic casting equipment is required to be provided with corresponding auxiliary equipment such as a heating mechanism, a heat preservation mechanism and the like, the size and the self weight of the electromagnetic casting equipment are increased, the complexity of the equipment structure is caused, and the flexibility and the convenience of the application and the maintenance of the electromagnetic casting equipment are seriously influenced, and meanwhile, the running and the maintenance cost of the electromagnetic casting equipment is relatively high.
In addition, because the electromagnetic pump adopted by the current electromagnetic casting equipment is a single power source and molten metal needs to be retained by a clock in a liquid lifting pipe, the metal is easy to flow back due to insufficient driving force in the casting process, and the metal cannot effectively meet the requirements of casting forming processing operation of fine structures and thin-wall structures, so that the product quality and the application range of workpieces processed by the electromagnetic casting operation are seriously influenced.
Therefore, in order to solve the problem, a brand new electromagnetic casting device is urgently needed to be developed so as to overcome the defects of the current device and meet the requirements of actual processing operation.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides an efficient electromagnetic casting device and a using method thereof.
A high-efficiency electromagnetic casting device comprises an electromagnetic liquid riser, a machine tool and a forming die connected with the machine tool, wherein the axis of the electromagnetic liquid riser is vertically distributed with the horizontal plane, the upper end surface of the electromagnetic liquid riser is communicated with the forming die, the lower end surface of the electromagnetic liquid riser is positioned above a worktable of the machine tool by at least 5 cm and is electrically connected with a control circuit of the machine tool, the electromagnetic liquid riser comprises a high-temperature resistant ceramic tube, a bearing tray, a conical sleeve, an electromagnetic driving coil, an electromagnetic coil, a positive electrode, a negative electrode and a conductive non-stick aluminum lining, the high-temperature resistant ceramic tube is in a cylindrical hollow columnar structure, the bearing tray and the conical sleeve are both coated outside the high-temperature resistant ceramic tube and are coaxially distributed with the high-temperature resistant ceramic tube, the conical sleeve is in an inverted conical hollow tubular structure, the lower end surface of the conical sleeve is connected with the outer surface of the high-temperature ceramic tube, the upper end surface of the conical sleeve is connected with the lower end surface of the bearing tray, and the inner side surface of the conical sleeve and the outer side surface of the high-temperature resistant ceramic tube form a driving cavity, the bearing tray is of a closed annular disc-shaped structure, the inner diameter of the bearing tray is consistent with the outer diameter of the upper end face of the conical sleeve and is at least 3 times of the outer diameter of the high-temperature resistant ceramic tube, the upper end face of the bearing tray is positioned below the upper end face of the high-temperature resistant ceramic tube, two conductive non-stick aluminum linings are embedded in the high-temperature resistant ceramic tube and are connected with the inner side face of the high-temperature resistant ceramic tube and are symmetrically distributed on two sides of the axis of the high-temperature resistant ceramic tube, wiring grooves are formed in the side wall of the high-temperature resistant ceramic tube corresponding to the conductive non-stick aluminum linings and are embedded in the driving cavity, the outer side face of one conductive non-stick aluminum lining is electrically connected with the anode electrode through the wiring grooves, the outer side face of the other conductive non-stick aluminum lining is electrically connected with the cathode electrode through the wiring grooves, the upper end faces of the anode electrode and the cathode electrode exceed the upper end face of the bearing tray by at least 5 mm, and the electromagnetic coil is of a closed annular structure and covers the high-temperature resistant ceramic tube, the electromagnetic coil up end is connected with bearing the tray, and lower terminal surface inlays in the drive intracavity and terminal surface and up end parallel distribution and with the perpendicular distribution of high temperature resistant ceramic pipe axis down, and electromagnetic coil up end and lower terminal surface distribute in high temperature resistant ceramic pipe axis both sides, and electromagnetic drive coil is connected with bearing the tray up end, and the cladding is outside the electromagnetic coil up end and with the coaxial distribution of electromagnetic coil up end, electromagnetic drive coil, positive electrode, negative electrode respectively with lathe control circuit electrical connection.
Furthermore, the lower end face of the high-temperature resistant ceramic tube is positioned outside the lower end face of the conical sleeve, the minimum distance between the lower end face of the high-temperature resistant ceramic tube and the lower end of the conical sleeve is 0, the height of a wiring groove arranged on the outer side face of the high-temperature resistant ceramic tube is not more than 1/2 of the height of the high-temperature resistant ceramic tube, the central angle corresponding to the wiring groove is an included angle of 10 degrees to 90 degrees, the arc length of the cross section of the wiring groove is not more than 90 percent of the arc length of the transverse end face of the conductive non-stick aluminum lining layer, and the arc length is 1.1 to 2.5 times of the wire diameter of the positive electrode and the negative electrode.
Furthermore, the electromagnetic coil comprises an upper horizontal line section, a lower horizontal line section and a lead section, wherein the upper horizontal line section and the lower horizontal line section are both U-shaped groove-shaped structures and are respectively coated outside the high-temperature resistant ceramic pipe, the front end surfaces of the upper horizontal line section and the lower horizontal line section and the axis of the high-temperature resistant ceramic pipe are distributed in the same plane, the upper horizontal line section and the lower horizontal line section are both distributed in parallel with the upper end surface of the bearing tray, the upper horizontal line section is connected with the upper end surface of the bearing tray, the electromagnetic driving coil is coated outside the lead section which is distributed in the upper horizontal line section and is vertical to the axis of the high-temperature resistant ceramic pipe and is coaxially distributed, the two ends of the upper horizontal line section and the lower horizontal line section are respectively connected through the lead section to form a closed annular structure, the lead sections are symmetrically distributed on two sides of the axis of the high-temperature resistant ceramic pipe and form an included angle of 0-60 degrees with the axis of the high-temperature resistant ceramic pipe, the lower horizontal line section is embedded in the driving cavity and positioned above the wiring groove, and the axis of the wire section, which is vertically distributed with the axis of the high-temperature resistant ceramic tube, in the lower horizontal line section is vertically distributed with the axis of the wiring groove.
Furthermore, the side wall of the conical sleeve corresponding to the lower horizontal line segment and the wire segment is provided with a limit groove which is distributed in parallel with the axis of the high-temperature resistant ceramic tube, and the lower horizontal line segment and the wire segment are all embedded in the limit groove and are connected with the conical sleeve through the limit groove.
Furthermore, the conductive non-stick aluminum lining layer is of a plate-shaped structure which is coaxially distributed with the high-temperature resistant ceramic tube, the height of the conductive non-stick aluminum lining layer is consistent with that of the high-temperature resistant ceramic tube, and the arc length is 1/6-1/3 of the perimeter of the high-temperature resistant ceramic tube.
Furthermore, two ends of the electromagnetic drive coil are respectively and electrically connected with a machine tool control circuit through leads, the leads connected with the two ends of the electromagnetic drive coil form an included angle of 14-60 degrees, and wiring grooves are formed in the upper end surfaces of the bearing trays corresponding to the electromagnetic drive coil, the positive electrode and the negative electrode.
Furthermore, the outer side surface of the high-temperature resistant ceramic tube corresponding to the driving cavity is provided with a temperature sensor and a magnetic field intensity sensor, and the temperature sensor and the magnetic field intensity sensor are electrically connected with a machine tool control circuit.
A use method of a high-efficiency electromagnetic casting device comprises the following steps:
s1, assembling equipment, namely, firstly installing an electromagnetic liquid lifter and a forming die on a machine tool, enabling the upper end surface of the electromagnetic liquid lifter and the lower end surface of the forming die to be coaxially distributed, then arranging an adjusting mechanism for bearing a casting ladle on a machine tool workbench corresponding to the lower end surface of the electromagnetic liquid lifter, and finally electrically connecting the electromagnetic liquid lifter, the forming die and the adjusting mechanism with a machine tool control circuit;
s2, casting, after the step S1 is completed, firstly, a casting ladle bearing molten aluminum flowing into is carried and positioned through an adjusting mechanism, the casting ladle is driven to move upwards through the adjusting mechanism, so that a high-temperature resistant ceramic tube of an electromagnetic liquid lifter is inserted into the casting ladle and communicated with the casting ladle, then on one hand, a machine tool control circuit is used for connecting a positive electrode and a negative electrode with a direct current power supply circuit, two conductive non-stick aluminum linings connected with the positive electrode and the negative electrode are electrified, and meanwhile, a closed circuit is formed between the conductive non-stick aluminum linings through the molten aluminum in the casting ladle, so that stable direct current passes through the molten aluminum; on the other hand, the machine tool control circuit drives the electromagnetic drive coil to operate, and a magnetic field is generated in the electromagnetic coil through the electromagnetic drive coil according to the electromagnetic induction principle; and finally, the molten aluminum liquid flows from bottom to top along the high-temperature-resistant ceramic tube under the drive of the ampere force generated by the electromagnetic induction effect between the direct current and the magnetic field and is conveyed to a forming die for casting and forming operation.
Further, in the step S2, after the casting molding operation is completed, the mold opening operation is performed on the molding mold, after the casting is taken out, the inner side surface of the molding cavity of the molding mold and the inner side surface of the high temperature resistant ceramic tube are cleaned by using the high pressure air flow, and after the cleaning is completed, the step S1 can be returned to realize the continuous casting operation.
On one hand, the system has the advantages of modular structure, high integration degree, flexible and convenient use, good universality, and good running stability and continuity of equipment, and can effectively meet the requirements of various casting parts and metal materials for realizing continuous casting operation; on the other hand, in the casting operation process, the system has high automation degree, can effectively eliminate the influence of metal oxide skin and condensation residues on the quality of the casting, and has high working precision of casting operation and good surface quality of a cast workpiece, thereby effectively reducing the production and processing cost and labor intensity and effectively reducing the equipment maintenance cost.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of an electromagnetic lift;
FIG. 3 is a schematic cross-sectional partial structure view of an electromagnetic liquid lift;
FIG. 4 is a schematic diagram of the structure of the electromagnetic drive coil and the electromagnetic coil;
FIG. 5 is a schematic flow chart of the method of the present invention;
FIG. 6 is a schematic view of the forming process of the blank workpiece in the casting operation of the present invention.
Detailed Description
In order to facilitate the implementation of the technical means, creation features, achievement of the purpose and the efficacy of the invention, the invention is further described below with reference to specific embodiments.
As shown in fig. 1-4, a high-efficiency electromagnetic casting device comprises an electromagnetic liquid riser 101, a machine tool 102 and a forming die 103 connected with the machine tool 102, wherein the axis of the electromagnetic liquid riser 101 is vertically distributed with the horizontal plane, the upper end surface of the electromagnetic liquid riser is communicated with the forming die 103, the lower end surface is located at least 5 cm above the worktable of the machine tool 102, and the electromagnetic liquid riser 101 is electrically connected with a control circuit of the machine tool 102, wherein the electromagnetic liquid riser 101 comprises a high-temperature resistant ceramic tube 1, a bearing tray 2, a conical sleeve 3, an electromagnetic driving coil 4, an electromagnetic coil 5, an anode electrode 6, a cathode electrode 7, a conductive non-stick aluminum lining 8, a cylindrical hollow columnar structure of the high-temperature resistant ceramic tube 1, the bearing tray 2 and the conical sleeve 3 are both coated outside the high-temperature resistant ceramic tube 1 and coaxially distributed with the high-temperature resistant ceramic tube 1, the conical sleeve 3 is an inverted conical hollow tubular structure, the lower end surface of the conical sleeve 3 is connected with the outer surface of the high-temperature resistant ceramic tube 1, the upper end face is connected with the lower end face of a bearing tray 2, the inner side face of a conical sleeve 3 and the outer side face of a high-temperature resistant ceramic tube 1 form a driving cavity 104, the bearing tray 2 is of a closed annular disc-shaped structure, the inner diameter of the bearing tray is consistent with the outer diameter of the upper end face of the conical sleeve 3 and is at least 3 times of the outer diameter of the high-temperature resistant ceramic tube 1, the upper end face of the bearing tray 2 is positioned below the upper end face of the high-temperature resistant ceramic tube 1, two conductive non-stick aluminum linings 8 are embedded in the high-temperature resistant ceramic tube 1 and connected with the inner side face of the high-temperature resistant ceramic tube 1 and are symmetrically distributed on two sides of the axis of the high-temperature resistant ceramic tube 1, wiring grooves 105 are arranged on the side wall of the high-temperature resistant ceramic tube 1 corresponding to the conductive non-stick aluminum linings 8 and are embedded in the driving cavity 104, the outer side face of one conductive non-stick aluminum lining 8 is electrically connected with an anode electrode 6 through the wiring grooves 105, the outer face of the other conductive non-stick aluminum lining 8 is electrically connected with a cathode electrode 7 through the wiring grooves, and the upper end surfaces of the positive electrode 6 and the negative electrode 7 exceed the upper end surface of the bearing tray 2 by at least 5 mm, the electromagnetic coil 5 is of a closed annular structure and is coated outside the high-temperature-resistant ceramic tube 1, the upper end surface of the electromagnetic coil 5 is connected with the bearing tray 2, the lower end surface is embedded in the driving cavity 104, the lower end surface and the upper end surface are distributed in parallel and are perpendicular to the axis of the high-temperature-resistant ceramic tube 1, the upper end surface and the lower end surface of the electromagnetic coil 5 are distributed on two sides of the axis of the high-temperature-resistant ceramic tube 1, the electromagnetic driving coil 4 is connected with the upper end surface of the bearing tray 2, the upper end surface of the electromagnetic coil 5 is coated outside the upper end surface of the electromagnetic coil 5 and is distributed coaxially with the upper end surface of the electromagnetic coil 5, and the electromagnetic driving coil 4, the positive electrode 6 and the negative electrode 7 are respectively and electrically connected with a machine tool control circuit.
In this embodiment, the lower end surface of the high temperature resistant ceramic tube 1 is located outside the lower end surface of the conical sleeve 3, the minimum distance between the lower end surface of the high temperature resistant ceramic tube 1 and the lower end of the conical sleeve 3 is 0, the height of the wiring groove 105 formed in the outer side surface of the high temperature resistant ceramic tube 1 is not greater than 1/2 of the height of the high temperature resistant ceramic tube 1, the central angle corresponding to the wiring groove is an included angle of 10 degrees to 90 degrees, and the arc length of the cross section of the wiring groove 105 is not greater than 90% of the arc length of the transverse end surface of the conductive non-stick aluminum lining and is 1.1 to 2.5 times of the wire diameter of the positive electrode 6 and the negative electrode 7.
It is emphasized that the electromagnetic coil 5 includes an upper horizontal line segment 51, a lower horizontal line segment 52 and a wire segment 53, wherein the upper horizontal line segment 51 and the lower horizontal line segment 52 are both of "u" -shaped groove-shaped structures and respectively cover the outside of the high temperature resistant ceramic tube 1, the front end surfaces of the upper horizontal line segment 51 and the lower horizontal line segment 52 and the axis of the high temperature resistant ceramic tube 1 are distributed in the same plane, and the upper horizontal line segment 51 and the lower horizontal line segment 52 are both distributed in parallel with the upper end surface of the carrying tray 2, wherein the upper horizontal line segment is connected with the upper end surface of the carrying tray 2, the electromagnetic driving coil 4 covers the wire segment in the upper horizontal line segment 51 which is vertically distributed with the axis of the high temperature resistant ceramic tube 1 and is coaxially distributed, the two ends of the upper horizontal line segment 51 and the lower horizontal line segment 52 are respectively connected through the wire segment 53 and form a closed ring-shaped structure, the wire segments 53 are symmetrically distributed on two sides of the axis of the high temperature resistant ceramic tube 1, and forms an included angle of 0-60 degrees with the axis of the high-temperature resistant ceramic tube 1, the lower horizontal line segment 52 is embedded in the driving cavity 104 and is positioned above the wiring groove 105, and the axis of the wire segment 53, which is vertically distributed with the axis of the high-temperature resistant ceramic tube 1, in the lower horizontal line segment 52 is vertically distributed with the axis of the wiring groove 105.
In addition, the side wall of the conical sleeve 3 corresponding to the lower horizontal line segment 52 and the wire segment 53 is provided with a limiting groove 106 which is distributed in parallel with the axis of the high temperature resistant ceramic tube 1, and the lower horizontal line segment 51 and the wire segment 53 are all embedded in the limiting groove 106 and connected with the conical sleeve 3 through the limiting groove 106.
In this embodiment, the conductive non-stick aluminum lining 8 is a plate-shaped structure coaxially distributed with the refractory ceramic tube 1, the height of the conductive non-stick aluminum lining is consistent with that of the refractory ceramic tube 1, and the arc length is 1/6-1/3 of the perimeter of the refractory ceramic tube 1.
It should be noted that the conductive non-stick aluminum lining 8 is made of graphite material.
Preferably, two ends of the electromagnetic driving coil 4 are electrically connected with a machine tool control circuit through wires, the wires connected to the two ends of the electromagnetic driving coil 4 form an included angle of 14-60 degrees, and wiring grooves 107 are formed in the upper end surfaces of the bearing tray 2 corresponding to the electromagnetic driving coil 4, the positive electrode 5 and the negative electrode 6.
In this embodiment, a temperature sensor 108 and a magnetic field intensity sensor 109 are disposed on the outer side surface of the high temperature resistant ceramic tube corresponding to the driving cavity 104, and both the temperature sensor 108 and the magnetic field intensity sensor 109 are electrically connected to a control circuit of the machine tool 102.
As shown in fig. 5 and 6, a method for using a high-efficiency electromagnetic casting apparatus includes the steps of:
s1, assembling equipment, namely, firstly installing an electromagnetic liquid lifter and a forming die on a machine tool, enabling the upper end surface of the electromagnetic liquid lifter and the lower end surface of the forming die to be coaxially distributed, then arranging an adjusting mechanism for bearing a casting ladle on a machine tool workbench corresponding to the lower end surface of the electromagnetic liquid lifter, and finally electrically connecting the electromagnetic liquid lifter, the forming die and the adjusting mechanism with a machine tool control circuit;
s2, casting, after the step S1 is completed, firstly, a casting ladle bearing molten aluminum flowing into is carried and positioned through an adjusting mechanism, the casting ladle is driven to move upwards through the adjusting mechanism, so that a high-temperature resistant ceramic tube of an electromagnetic liquid lifter is inserted into the casting ladle and communicated with the casting ladle, then on one hand, a machine tool control circuit is used for connecting a positive electrode and a negative electrode with a direct current power supply circuit, two conductive non-stick aluminum linings connected with the positive electrode and the negative electrode are electrified, and meanwhile, a closed circuit is formed between the conductive non-stick aluminum linings through the molten aluminum in the casting ladle, so that stable direct current passes through the molten aluminum; on the other hand, the machine tool control circuit drives the electromagnetic drive coil to operate, and a magnetic field is generated in the electromagnetic coil through the electromagnetic drive coil according to the electromagnetic induction principle; and finally, the molten aluminum liquid flows from bottom to top along the high-temperature-resistant ceramic tube under the drive of the ampere force generated by the electromagnetic induction effect between the direct current and the magnetic field and is conveyed to a forming die for casting and forming operation.
In this embodiment, in the step S2, after the casting molding operation is completed, the mold opening operation is performed on the molding mold, after the casting is taken out, the inner side surface of the molding cavity of the molding mold and the inner side surface of the high temperature resistant ceramic tube are cleaned by the high pressure air flow, and after the cleaning is completed, the process returns to the step S1 to realize the continuous casting operation.
In this embodiment, in the step S2, when the molten aluminum flows along the high temperature resistant ceramic tube from bottom to top under the driving of the ampere force generated by the electromagnetic induction effect between the direct current and the magnetic field, the calculation expression of the ampere force is as follows:
F=IBL；
wherein, F: driving force of molten aluminum upwards;
i: current between the positive electrode and the negative electrode;
b: magnetic field force of the electromagnetic coil;
l: the distance between the anode electrode and the cathode electrode.
And the current direction between the anode electrode and the cathode electrode is vertically distributed with the magnetic field direction of the electromagnetic coil.
During operation, on one hand, the temperature of the aluminum liquid is detected through the temperature sensor, on the other hand, the driving magnetic field intensity of the electromagnetic driving coil is detected through the magnetic field intensity sensor, and the detection result is sent to the machine tool control circuit.
On one hand, the system has the advantages of modular structure, high integration degree, flexible and convenient use, good universality, and good running stability and continuity of equipment, and can effectively meet the requirements of various casting parts and metal materials for realizing continuous casting operation; on the other hand, in the casting operation process, the system has high automation degree, can effectively eliminate the influence of metal oxide skin and condensation residues on the quality of the casting, and has high working precision of casting operation and good surface quality of a cast workpiece, thereby effectively reducing the production and processing cost and labor intensity and effectively reducing the equipment maintenance cost.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a device is cast to high-efficient electromagnetism, includes electromagnetism liquid lifter, lathe and the forming die who is connected with the lathe, wherein electromagnetism liquid lifter axis and horizontal plane vertical distribution, its up end and forming die intercommunication, lower terminal surface are located the lathe workstation top 5 centimetres at least, just electromagnetism liquid lifter and lathe control circuit electrical connection, its characterized in that: the electromagnetic liquid riser comprises a high-temperature resistant ceramic tube, a bearing tray, a conical sleeve, an electromagnetic drive coil, an electromagnetic coil, an anode electrode, a cathode electrode and two conductive non-stick aluminum linings, wherein the high-temperature resistant ceramic tube is of a cylindrical hollow columnar structure, the bearing tray and the conical sleeve are both coated outside the high-temperature resistant ceramic tube and are coaxially distributed with the high-temperature resistant ceramic tube, the conical sleeve is of an inverted conical hollow tubular structure, the lower end face of the conical sleeve is connected with the outer surface of the high-temperature resistant ceramic tube, the upper end face of the conical sleeve is connected with the lower end face of the bearing tray, the inner side face of the conical sleeve and the outer side face of the high-temperature resistant ceramic tube form a drive cavity, the bearing tray is of a closed annular disc-shaped structure, the inner diameter of the bearing tray is consistent with the outer diameter of the upper end face of the conical sleeve and is at least 3 times of the outer diameter of the high-temperature resistant ceramic tube, the upper end face of the bearing tray is positioned below the upper end face of the high-temperature resistant ceramic tube, and the two conductive non-stick aluminum linings are arranged, the electromagnetic coil is of a closed annular structure and covers the outside of the high-temperature resistant ceramic tube, the upper end face of the electromagnetic coil is connected with the bearing tray, the lower end face of the electromagnetic coil is embedded in the driving cavity, the lower end face of the electromagnetic coil is distributed in parallel with the upper end face and is vertically distributed with the axis of the high-temperature resistant ceramic tube, and the upper end face and the lower end face of the electromagnetic coil are distributed on two sides of the axis of the high-temperature resistant ceramic tube, the electromagnetic driving coil is connected with the upper end face of the bearing tray, covers the outer side of the upper end face of the electromagnetic coil and is distributed coaxially with the upper end face of the electromagnetic coil, and the electromagnetic driving coil, the positive electrode and the negative electrode are respectively and electrically connected with a machine tool control circuit.
2. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: the terminal surface is located the terminal surface under the taper sleeve under the high temperature resistant ceramic pipe, and minimum interval is 0 between terminal surface and the taper sleeve lower extreme under the high temperature resistant ceramic pipe, the wiring groove height that the high temperature resistant ceramic pipe lateral surface set up is not more than the 1/2 of high temperature resistant ceramic pipe height, and the central angle that the wiring groove corresponds is 10-90 contained angles, and the arc length of wiring groove cross section is not more than the 90% of the electric conduction on-stick aluminium lining horizontal end face arc length to be 1.1-2.5 times of positive electrode, negative electrode line footpath.
3. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: the electromagnetic coil comprises an upper horizontal line section, a lower horizontal line section and a lead section, wherein the upper horizontal line section and the lower horizontal line section are of U-shaped groove-shaped structures and are respectively coated outside the high-temperature resistant ceramic pipe, the front end surfaces of the upper horizontal line section and the lower horizontal line section are distributed in the same plane with the axis of the high-temperature resistant ceramic pipe, the upper horizontal line section and the lower horizontal line section are both distributed in parallel with the upper end surface of the bearing tray, the upper horizontal line section is connected with the upper end surface of the bearing tray, the electromagnetic driving coil is coated outside the lead section which is distributed in the upper horizontal line section and is vertical to the axis of the high-temperature resistant ceramic pipe and is coaxially distributed, the two ends of the upper horizontal line section and the lower horizontal line section are respectively connected through the lead section to form a closed annular structure, the lead sections are symmetrically distributed on two sides of the axis of the high-temperature resistant ceramic pipe and form an included angle of 0-60 degrees with the axis of the high-temperature resistant ceramic pipe, the lower horizontal line section is embedded in the driving cavity and positioned above the wiring groove, and the axis of the wire section, which is vertically distributed with the axis of the high-temperature resistant ceramic tube, in the lower horizontal line section is vertically distributed with the axis of the wiring groove.
4. A high efficiency electromagnetic casting apparatus as defined in claim 3, wherein: and the side wall of the conical sleeve corresponding to the lower horizontal line segment and the lead segment is provided with a limiting groove which is distributed in parallel with the axis of the high-temperature resistant ceramic tube, and the lower horizontal line segment and the lead segment are embedded in the limiting groove and are connected with the conical sleeve through the limiting groove.
5. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: the conductive non-stick aluminum lining is of a plate-shaped structure which is coaxially distributed with the high-temperature resistant ceramic tube, the height of the conductive non-stick aluminum lining is consistent with that of the high-temperature resistant ceramic tube, and the arc length is 1/6-1/3 of the perimeter of the high-temperature resistant ceramic tube.
6. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: the two ends of the electromagnetic driving coil are respectively and electrically connected with a machine tool control circuit through leads, the leads connected with the two ends of the electromagnetic driving coil form an included angle of 14-60 degrees, and wiring grooves are formed in the upper end faces of the bearing trays corresponding to the electromagnetic driving coil, the positive electrode and the negative electrode.
7. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: the high temperature resistant ceramic pipe lateral surface that the drive chamber correspond establish a temperature sensor and a magnetic field intensity sensor, just temperature sensor and magnetic field intensity sensor all with machine tool control circuit electrical connection.
8. The use method of the high-efficiency electromagnetic casting device is characterized by comprising the following steps of:
s1, assembling equipment, namely, firstly installing an electromagnetic liquid lifter and a forming die on a machine tool, enabling the upper end surface of the electromagnetic liquid lifter and the lower end surface of the forming die to be coaxially distributed, then arranging an adjusting mechanism for bearing a casting ladle on a machine tool workbench corresponding to the lower end surface of the electromagnetic liquid lifter, and finally electrically connecting the electromagnetic liquid lifter, the forming die and the adjusting mechanism with a machine tool control circuit;
s2, casting, after the step S1 is completed, firstly, a casting ladle bearing molten aluminum flowing into is carried and positioned through an adjusting mechanism, the casting ladle is driven to move upwards through the adjusting mechanism, so that a high-temperature resistant ceramic tube of an electromagnetic liquid lifter is inserted into the casting ladle and communicated with the casting ladle, then on one hand, a machine tool control circuit is used for connecting a positive electrode and a negative electrode with a direct current power supply circuit, two conductive non-stick aluminum linings connected with the positive electrode and the negative electrode are electrified, and meanwhile, a closed circuit is formed between the conductive non-stick aluminum linings through the molten aluminum in the casting ladle, so that stable direct current passes through the molten aluminum; on the other hand, the machine tool control circuit drives the electromagnetic drive coil to operate, and a magnetic field is generated in the electromagnetic coil through the electromagnetic drive coil according to the electromagnetic induction principle; and finally, the molten aluminum liquid flows from bottom to top along the high-temperature-resistant ceramic tube under the drive of the ampere force generated by the electromagnetic induction effect between the direct current and the magnetic field and is conveyed to a forming die for casting and forming operation.
9. A high efficiency electromagnetic casting apparatus as defined in claim 1, wherein: in the step S2, after the casting molding operation is completed, the mold opening operation is performed on the molding mold, after the casting is taken out, the inner side surface of the molding cavity of the molding mold and the inner side surface of the high-temperature-resistant ceramic tube are cleaned by using the high-pressure air flow, and after the cleaning is completed, the step S1 can be returned to realize the requirement of the continuous casting operation.
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| CN202111038282.0A CN113770317A (en) | 2021-09-06 | 2021-09-06 | Efficient electromagnetic casting device and using method |
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Application publication date: 20211210 |