CN114951565B - Production method of magnesium alloy ingot - Google Patents
Production method of magnesium alloy ingot Download PDFInfo
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- CN114951565B CN114951565B CN202210622299.9A CN202210622299A CN114951565B CN 114951565 B CN114951565 B CN 114951565B CN 202210622299 A CN202210622299 A CN 202210622299A CN 114951565 B CN114951565 B CN 114951565B
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- crucible
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- magnesium
- lifting
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 74
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 63
- 239000011777 magnesium Substances 0.000 claims abstract description 63
- 238000003756 stirring Methods 0.000 claims abstract description 63
- 239000002904 solvent Substances 0.000 claims abstract description 19
- 238000007670 refining Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 39
- 238000009413 insulation Methods 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 25
- 230000005484 gravity Effects 0.000 claims description 24
- 230000006698 induction Effects 0.000 claims description 17
- 238000003723 Smelting Methods 0.000 claims description 15
- 239000000428 dust Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000009749 continuous casting Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 150000001805 chlorine compounds Chemical group 0.000 claims description 3
- 239000010436 fluorite Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/005—Casting ingots, e.g. from ferrous metals from non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
-
- 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
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a production method of magnesium alloy ingots, which belongs to the field of magnesium alloy production and mainly solves the problems of low working efficiency and potential safety hazard in the current magnesium alloy ingot production process, and comprises the steps of manufacturing raw magnesium, melting solvent, hoisting the raw magnesium, refining at high temperature, stirring, slag lifting and casting.
Description
Technical Field
The invention belongs to the field of magnesium alloy production, and particularly relates to a production method of a magnesium alloy ingot.
Background
The magnesium alloy is used as a novel engineering material, and is widely applied to the fields of automobile industry, 5G products, aerospace and other engineering structural parts and the like due to light weight, high specific strength and good processability. Along with the increasing market demand, china is taken as a magnesium production base for millions of tons of annual production, and the requirements on high quality, high quality and multiple specifications of magnesium alloy are also higher and higher.
In the production process of the existing magnesium alloy ingot, dolomite is manufactured into a beautiful alloy ingot through a plurality of working procedures, a high-temperature refining process is required to be ensured, the link is heavy, all production enterprises at home and abroad generally stir and refine first and then blow and extract slag, the process causes great burning loss and waste of magnesium alloy, potential safety hazards caused by frequent lifting operation, and the problems of lower yield and the like caused by prolonged working procedures and time; in the smelting use process of the crucible, metal or alloy melt is contacted with the inside and the outside of the crucible, the outside is heated and deformed by a heating source, and the inside is eroded and eroded by stirring of high-temperature molten metal melt or the phenomena of cracking, peeling, penetration and the like of the crucible are easily caused in the frequent heating and cooling process, so that the service life of the crucible is very limited, high-temperature molten liquid leakage is easily caused, and production accidents such as safety, environmental protection and the like are caused;
Meanwhile, the final casting is one of important procedures, and different clients have different requirements on ingot production, so that the casting mould is required to be replaced frequently, and the mould is heavy, is laborious to carry manually, has certain danger when being lifted manually, and has potential safety hazards of crushing injury or crushing injury; in addition, the process of lifting the original magnesium is high-altitude operation, the original magnesium is required to be lifted and placed in the crucible by using a crane, staff walking in and out of a lower channel are also present in the lifting process, and a certain safety risk is brought to the staff in the lower channel.
Disclosure of Invention
In order to solve the problems in the background, the invention provides a production method of a magnesium alloy ingot, so as to solve the problems of low efficiency, high potential safety hazard and high labor intensity in the production process of the alloy ingot.
In order to achieve the above object, the present invention provides the following technical solutions:
A method of producing a magnesium alloy ingot, the method comprising:
S1, preparing original magnesium through a magnesium preparation process, and collecting and storing the original magnesium;
S2, adding a solvent into the stirring and slag extracting integrated crucible for melting in advance, wherein the stirring and slag extracting integrated crucible can simultaneously perform stirring and slag extracting operations, an exhaust device is arranged in a stirring device in the stirring and slag extracting integrated crucible, the slag extracting device can move up and down, the main component of the solvent is chloride, and the solvent without BaCl 2 is adopted;
S3, hoisting the raw magnesium in the step S1 into a crucible with integrated stirring and slag lifting functions for high-temperature melting, wherein a safety linkage alarm device is adopted in the hoisting process, safety of a hoisting area is guaranteed and controlled, stirring is carried out when the temperature reaches 700 ℃, and a solvent and impurities in a magnesium solution are required to be continuously added in the stirring process to form a precipitate, and the precipitate falls into the bottom of the crucible to form bottom slag;
S4, after the solvent is stopped being added, introducing nitrogen into an exhaust device of a stirring device in the stirring and slag extracting integrated crucible, blowing the nitrogen from the bottom, and collecting bottom slag by a slag extracting device;
S5, sampling and detecting after slag extraction is finished, and standing the magnesium liquid for one hour after the components are qualified to obtain pure magnesium liquid;
S6, setting different weights of pure magnesium liquid according to different ingot molds, adding an automatic pump into the ingot mold of the continuous casting machine in an operating state, rotating the continuous casting machine according to the set frequency, and operating the ingot mold filled with the magnesium alloy liquid from a casting position to a demolding position, namely realizing cooling and automatic demolding, namely obtaining the magnesium alloy ingot.
The method comprises the steps of arranging an integral crucible for stirring and slag extraction in a high-temperature refining process, hoisting raw magnesium into the integral crucible, adopting a safety linkage alarm device in the hoisting process, ensuring the safety of a hoisting area, adding a solvent while stirring after the raw magnesium enters the integral crucible, extracting slag by utilizing an exhaust device below the crucible, combining the two processes of stirring and slag extraction into one process, shortening refining time, standing after slag extraction is finished, and then entering a continuous casting machine for casting to finally form a magnesium alloy ingot.
Further, in step S2, stirring and slag lifting integrated crucible comprises a refining crucible, lifting lugs are symmetrically arranged on the outer side of the refining crucible, a combined frame is arranged at the top of the refining crucible, a main shaft is rotatably arranged at the center of the bottom of the combined frame, a stirring paddle is welded and mounted on the outer side wall of the bottom of the main shaft, an exhaust pipe is welded and mounted at the bottom of the stirring paddle, the combined frame is controlled to rotate through a gear transmission main shaft, slag lifting barrel supporting frames are movably arranged on two sides of the main shaft on the combined frame, an electric push rod is connected to the bottom of the slag lifting barrel supporting frames, and a slag lifting barrel is connected to the bottom of the electric push rod. The lug is used for lifting by crane the crucible, and the combination frame sets up in the top of crucible, sets up motor control main shaft on the combination frame, and then control stirring rake stirs, and the combination frame both sides set up and carry the slag bucket, carry the up-and-down motion of slag bucket through electric putter control and collect the end sediment, set up the blast pipe in the bottom of stirring rake simultaneously, make end sediment float through the jetting of blast pipe, conveniently carry the slag bucket and collect.
Further, in step S2, the solvent comprises the following components: mgCl 2, KCl, naCl and fluorite powder.
Further, in step S3, the safety linkage alarm device includes a main circuit and an induction control circuit, the induction control circuit is connected to the main circuit, the main circuit includes a main control power supply and a lifter controller connected to the main control power supply, the induction control circuit is divided into a driving induction circuit and an infrared alarm circuit, the driving induction circuit is formed by connecting a proximity switch, a proximity switch relay, an infrared switch relay, an alarm device, a first switch, a time relay, a second switch and a third switch in series and then in parallel, the driving induction circuit is connected to the first power supply, the first proximity switch relay is connected to the second switch, the third infrared switch relay is connected to the third switch, the infrared alarm circuit includes a second power supply, an infrared induction switch and an infrared transmitter, the infrared induction switch is connected to the infrared switch, and the lifter controller is controlled by the infrared switch. Through setting up main circuit and response control circuit, main circuit provides the power of lifter controller, the response circuit falls into driving response circuit and infrared alarm circuit again, driving response circuit senses the hoist through infrared induction and gets into the work area, infrared switch intercommunication this moment, open proximity switch, synchronous linkage alarm device reminds the staff, it lasts to report to the police, make after the staff of below work all withdraws from the region, infrared switch intercommunication back, time relay continues intercommunication after a period of time, with signal transmission to lifter controller department, the control lifter controller sends out the action of falling the pole, empty and seal the intermediate channel, when guaranteeing the hoist and mount operation, the below does not have other staff to pass through, promote the security.
Further, in step S3, the stirring and slag extracting integrated crucible is further provided with a crucible safety emergency disposal furnace, so that a crucible leakage accident can be rapidly handled. In the smelting use process of the crucible, metal or alloy melt is contacted with the inside and the outside of the crucible, the outside is heated and deformed by a heating source, the inside is eroded and eroded by stirring of the high-temperature molten metal melt or the phenomena of cracking, peeling, penetration and the like of the crucible are easily caused in the frequent heating and cooling process, so that the service life of the crucible is very limited, high-temperature molten liquid leakage events are easily caused, the safety and environmental protection of the site are affected, and the crucible leakage events can be rapidly processed by the crucible safety emergency treatment furnace.
Further, the crucible safety emergency treatment furnace comprises a smelting crucible and an inner heat insulation layer, and is characterized in that a crucible lifting lug is arranged on the surface of the smelting crucible, magnesium liquid is contained in the smelting crucible, a hearth crucible ring bearing frame is fixedly arranged at the top of the inner heat insulation layer, an outer heat insulation layer is fixedly arranged on the surface of the hearth crucible ring bearing frame, a refractory castable layer is arranged on the surface of the inner heat insulation layer, an inclined plate is fixedly arranged at the bottom of the inner side of the outer heat insulation layer, a dust removal induced air pipeline is arranged on the surface of the inner heat insulation layer, and the free end of the dust removal induced air pipeline penetrates through the refractory castable layer and the outer heat insulation layer and extends to the outer part of the outer heat insulation layer, and a magnesium liquid collecting groove is movably inserted at the bottom of the outer heat insulation layer. This safe emergent treatment furnace of crucible of smelting, be convenient for hoist and mount the crucible of smelting through the crucible lug, be convenient for support the crucible mechanical energy of smelting through furnace crucible circle bearing frame, avoid magnesium liquid to reveal through the furnace that refractory castable layer, inside insulating layer, outside insulating layer constitute and produce danger, through the external supporting dust collecting equipment of dust removal induced air pipeline, and then be convenient for absorb the flue gas in the furnace, reduce workshop flue gas diffusion, in the magnesium liquid collecting vat is led to the magnesium liquid through the swash plate, recycle the magnesium liquid through the magnesium liquid collecting vat, reducible magnesium liquid economic loss who burns out.
Further, in step S6, since the casting mold on the casting machine is frequently replaced, the casting mold is replaced by a mold quick-replacing device. Because different customers have different requirements on the produced ingot types, the mould needs to be frequently replaced, and the replacement mould is manually replaced, so that the time and labor are consumed, the production yield is influenced, and a certain danger exists in manual lifting, so that the mould quick replacement device is arranged to replace the mould.
Further, mould quick replacement device includes the conveyer belt, is provided with a plurality of roller bearing on the conveyer belt, and the end of conveyer belt is provided with the gravity inductor, and the top and the roller bearing top parallel and level of gravity inductor, one side of conveyer belt and the position corresponding department with the gravity inductor are provided with cylinder one, and the opposite side of conveyer belt corresponds the position corresponding department with the gravity inductor and is provided with the groove of lifting, the below of lifting the groove is equipped with elevating gear, lifts the groove both ends opening, lifts the groove and is provided with cylinder two at the opposite side of gravity inductor, and the gravity inductor is being on a parallel with conveyer belt direction of operation and is located the other one side of conveyer belt and is equipped with cylinder three, cylinder one, cylinder two and cylinder three's piston rod tip are equipped with trapezoidal push groove respectively, and gravity inductor links to each other with cylinder one and cylinder two. The roller conveying belt is arranged to transfer the die, the gravity sensor is arranged at the rear of the roller to transfer signals, so that the first cylinder and the third cylinder can move according to the signals, the first cylinder can push the die into the lifting groove, the third cylinder can push the die onto the conveying belt, the transfer in the die disassembling and assembling process can be met, the lifting groove can lift the die in a lifting manner, the die is convenient to assemble and disassemble, the labor intensity of staff is reduced, and meanwhile, the ends of piston rods of the three cylinders are respectively provided with the trapezoidal pushing grooves, so that the die can be stabilized, and the die is prevented from sliding.
The crucible has the advantages that the crucible is provided with the integrated crucible for stirring and slag lifting, the safety linkage alarm device is arranged in the process of lifting the original magnesium to the crucible, the safety of the lifting process is guaranteed, stirring and slag lifting are simultaneously carried out in the integrated crucible for stirring and slag lifting, the working time is shortened, the working efficiency is improved, meanwhile, the crucible safety emergency treatment furnace is provided for rapidly treating the leakage of the crucible, the influence and hazard caused by the leakage of the crucible are reduced, the leaked magnesium liquid can be collected for recycling, the production cost is saved, the mold of the continuous casting machine is rapidly replaced by the mold rapid replacement device, the working efficiency is improved, and the labor intensity of staff is reduced; according to the production method, the safety linkage alarm device, the stirring and slag extracting integrated crucible, the crucible safety emergency treatment furnace and the die quick replacement device are arranged, so that the harm and the production cost of the alloy ingot production process are reduced, the labor intensity of staff is reduced, and the working efficiency and the quality of producing the alloy ingot are improved.
Drawings
FIG. 1 is a schematic view of a crucible for stirring and extracting slag in a preferred embodiment of a method for producing magnesium alloy ingot according to the present invention;
FIG. 2 is a schematic diagram showing the internal structure of an integral crucible for stirring and extracting slag;
FIG. 3 is a main circuit diagram of the safety linkage alarm device in the preferred embodiment;
FIG. 4 is a schematic view of the construction of a safety emergency treatment furnace for a crucible in a preferred embodiment;
FIG. 5 is a cross-sectional view of FIG. 4;
fig. 6 is a schematic view of the structure of the mold quick-change device in the preferred embodiment.
Wherein: 101. refining a crucible; 102. a combination rack; 103. a slag bucket supporting frame; 104. lifting lugs; 106. an electric push rod; 108. a main shaft; 110. a slag lifting barrel; 111. stirring paddles; 112. an exhaust pipe; 201. a total control power supply; 202. dividing a first power supply; 203. a second power dividing source; 204. a proximity switch; 205. an alarm device; 206. a proximity switch relay; 207. an infrared switch; 208. an infrared switching relay; 209. a time relay; 210. a first switch; 211. a second switch; 212. a third switch; 213. an infrared induction switch; 214. an infrared emitter; 215. a lifter controller; 301. smelting a crucible; 302. crucible lifting lug; 303. a hearth crucible ring bearing frame; 304. a refractory castable layer; 305. an inner insulating layer; 306. an outer insulating layer; 307. magnesium solution; 308. a sloping plate; 309. dust removal induced draft pipeline; 310. a magnesium liquid collecting tank; 401. a conveyor belt; 402. a roller; 403. a first cylinder; 404. trapezoidal pushing grooves; 405. a gravity sensor; 406. a lifting groove; 408. a lifting device; 409. a second cylinder; 410. and a third cylinder.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings.
A method of producing a magnesium alloy ingot, the method comprising:
s1, preparing original magnesium through a magnesium preparation process, preparing the original magnesium by using a Pi Jianglian magnesium method, and collecting and storing the original magnesium;
S2, a refining crucible used for refining raw magnesium is an integral crucible for stirring and slag lifting, stirring and slag lifting operations can be simultaneously carried out, as shown in fig. 1 and 2, the integral crucible for stirring and slag lifting comprises a refining crucible 101, lifting lugs 104 are symmetrically arranged on the outer side of the refining crucible 101 and used for lifting the refining crucible 101, a combined frame 102 is arranged at the top of the refining crucible 101, a main shaft 108 is rotatably arranged at the center of the bottom of the combined frame 102, a stirring paddle 111 is welded and arranged on the outer side wall of the bottom of the main shaft 108, an exhaust pipe 112 is welded and arranged at the bottom of the stirring paddle 111, an air receiving port of the exhaust pipe 112 is arranged at the top of the main shaft 108, a motor is arranged on the combined frame 102, and then the main shaft 108 is controlled to rotate through a motor control gear, so that the stirring purpose is achieved, two sides of the combined frame 102 are movably provided with slag lifting barrel support frames 103, the bottoms of the slag lifting barrel support frames 103 are connected with electric push rods 106, the bottoms of the electric push rods 106 are connected with slag lifting barrels 110, the two slag lifting barrel 110 are symmetrically arranged on the combined frame 102, and meanwhile the electric push rods 106 are controlled to move up and down to collect generated slag of the slag lifting barrel 110;
Adding a solvent into a stirring and slag extracting integrated crucible to be melted in advance, wherein the main component of the solvent is chloride, and the solvent without BaCl 2 is adopted, and comprises the following components: mgCl 2, KCl, naCl and fluorite powder.
S3, the original magnesium in the step S1 is hoisted and put into the stirring and slag lifting integrated crucible, a safety linkage alarm device is adopted in the hoisting process, safety of a hoisting area is guaranteed and controlled, a channel is arranged below the hoisting area, potential safety hazards exist for staff below the hoisting area, and therefore the safety linkage alarm device is arranged. After the hoist and mount process starts, after the hoist gets into the work area, through infrared ray response and proximity switch linkage alarm device start to report to the police, infrared switch intercommunication simultaneously, through time relay control lifter delay drop pole, make staff can exit the passageway, solved the hidden danger that below passageway personnel pass through existence under the hoist and mount, after hoist and mount finish leaving the work area, infrared signal is sensed to the lifter, the lifter plays the pole, the passageway of below normally passes.
After the original magnesium enters a crucible with integrated stirring and slag extracting functions, stirring is carried out when the temperature reaches 700 ℃, and a solvent and impurities in the magnesium liquid are required to be continuously added in the stirring process to form a precipitate, and the precipitate falls into the bottom of the crucible to form bottom slag;
S4, after the solvent is stopped being added, nitrogen is introduced into an exhaust device of a stirring device in the stirring and slag extracting integrated crucible, and is blown out from an exhaust pipe 112 at the bottom, so that bottom slag rolls in magnesium liquid, and the bottom slag rolls into a slag extracting barrel because the density of the bottom slag is higher than that of the magnesium liquid, and the process is repeated for two times and three times, so that the bottom slag is completely extracted;
S5, sampling and detecting after slag extraction is finished, and standing the magnesium liquid for one hour after the components are qualified to obtain pure magnesium liquid;
S6, setting different weights of pure magnesium liquid according to different ingot molds, adding an automatic pump into the ingot mold of the continuous casting machine in an operating state, rotating the continuous casting machine according to the set frequency, and operating the ingot mold filled with the magnesium alloy liquid from a casting position to a demolding position, namely realizing cooling and automatic demolding, namely obtaining the magnesium alloy ingot.
Furthermore, because the crucible is frequently warmed up in use, the service life of the crucible is very limited, and high-temperature molten liquid leakage events are very easy to occur, so that the crucible integrated with stirring and slag extraction is also provided with a crucible safety emergency disposal furnace, and the crucible leakage accidents can be rapidly treated. The crucible safety emergency disposal furnace comprises a smelting crucible 301 and an inner heat insulation layer 305, and is characterized in that a crucible lifting lug 302 is arranged on the surface of the smelting crucible 301, magnesium liquid 307 is contained in the smelting crucible 301, a hearth crucible ring bearing frame 303 is fixedly arranged at the top of the inner heat insulation layer 305, an outer heat insulation layer 306 is fixedly arranged on the surface of the hearth crucible ring bearing frame 303, a refractory castable layer 304 is arranged on the surface of the inner heat insulation layer 305, an inclined plate 308 is fixedly arranged at the bottom of the inner side of the outer heat insulation layer 306, a dust removal induced air pipeline 309 is arranged on the surface of the inner heat insulation layer 305, the free end of the dust removal induced air pipeline 309 penetrates through the refractory castable layer 304 and the outer heat insulation layer 306 and extends to the outer part of the outer heat insulation layer 306, and a magnesium liquid collecting groove 310 is movably inserted at the bottom of the outer heat insulation layer 306.
Hoist and mount melting crucible 301 through crucible lug 302 is convenient for, be convenient for support melting crucible 301 mechanical energy through furnace crucible circle bearing frame 303, avoid magnesium liquid 307 to reveal through the furnace that refractory castable layer 304, inside insulating layer 305, outside insulating layer 306 constitute and produce danger, external supporting dust collecting equipment through dust removal induced air pipeline 309, and then be convenient for absorb the flue gas in the furnace, reduce workshop flue gas diffusion, in the magnesium liquid collecting vat 310 with the magnesium liquid 307 water conservancy diversion through swash plate 308, retrieve the recycling through magnesium liquid collecting vat 310 to magnesium liquid 307, the economic loss of reducible magnesium liquid 307 burn loss, handle the crucible fast through crucible safety emergency treatment stove, reduce workshop flue gas diffusion, and can retrieve the recycling to the magnesium liquid that leaks, reduction in production cost.
Further, different customers have different demands on the produced ingot shape, and thus the mold on the casting machine needs to be frequently replaced, so that a mold quick-replacing device is used to replace the casting mold. The quick die replacing device comprises a conveying belt 401, a plurality of rollers 402 are arranged on the conveying belt 401, a gravity sensor 405 is arranged at the tail end of the conveying belt 401, the top of the gravity sensor 405 is flush with the top of the rollers 402, a first cylinder 403 is arranged at the position corresponding to the gravity sensor 405 on one side of the conveying belt 401, a lifting groove 406 is arranged at the position corresponding to the position of the gravity sensor 405 on the opposite side of the conveying belt 401, a lifting device 408 is arranged below the lifting groove 406, two ends of the lifting groove 406 are opened, a second cylinder 409 is arranged on the opposite side of the gravity sensor 405, a third cylinder 410 is arranged on the other side of the conveying belt 401 in parallel with the running direction of the conveying belt 401, a trapezoid pushing groove 404 is arranged at the end parts of piston rods of the first cylinder 403, the second cylinder 409 and the third cylinder 410, and the first cylinder 403 are connected with the second cylinder 403.
When the mold needs to be replaced, lifting device 408 lifts lifting groove 406 to the mold to be positioned, screws of the existing casting machine mold are removed after positioning, after the mold is removed, the mold is lowered onto lifting groove 406, cylinder two 409 pushes the mold onto gravity sensor 405 after lifting groove 406 is lowered, gravity sensor 405 gives out a signal, cylinder three 410 pushes the mold onto conveyor belt 401, the mold is conveyed out, and the operation is repeated until the mold removal operation is finished; then, a new die to be replaced is placed on the conveyor belt 401, when the die is conveyed to the gravity sensor 405, the gravity sensor 405 gives out a signal, the first air cylinder 403 pushes the die into the lifting groove 406, the lifting groove 406 ascends to the die installation position, the installation screw is fastened after positioning, and the operation is repeated until the installation of the new die is finished.
According to the invention, the crucible is integrated with stirring and slag lifting, the safety linkage alarm device is arranged in the process of lifting the original magnesium to the crucible, so that the safety of the lifting process is ensured, the stirring and slag lifting are simultaneously carried out in the crucible with stirring and slag lifting, the working time is shortened, the working efficiency is improved, the crucible is simultaneously provided with the crucible safety emergency treatment furnace for rapidly treating the leakage of the crucible, the influence and hazard of the leakage of the crucible are reduced, the leaked magnesium liquid can be collected and recycled, the production cost is saved, the mold of the continuous casting machine is rapidly replaced by using the mold rapid replacement device, the working efficiency is improved, and the labor intensity of staff is reduced; according to the production method, the safety linkage alarm device, the stirring and slag extracting integrated crucible, the crucible safety emergency treatment furnace and the die quick replacement device are arranged, so that the harm and the production cost of the alloy ingot production process are reduced, the labor intensity of staff is reduced, and the working efficiency and the quality of producing the alloy ingot are improved.
Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the same, and that the devices and mechanisms not described in detail in the embodiments of the present invention are known in the art, and it should be understood by those skilled in the art that modifications and equivalents of the present invention without inventive thought are intended to be included in the scope of the claims of the present invention.
Claims (6)
1. A method of producing a magnesium alloy ingot, the method comprising:
S1, preparing original magnesium through a magnesium preparation process, and collecting and storing the original magnesium;
S2, adding a solvent into the stirring and slag extracting integrated crucible for melting in advance, wherein the stirring and slag extracting integrated crucible can simultaneously perform stirring and slag extracting operations, an exhaust device is arranged in a stirring device in the stirring and slag extracting integrated crucible, the slag extracting device can move up and down, the main component of the solvent is chloride, and the solvent without BaCl 2 is adopted;
S3, hoisting the raw magnesium in the step S1 into a crucible with integrated stirring and slag lifting functions for high-temperature melting, wherein a safety linkage alarm device is adopted in the hoisting process, safety of a hoisting area is guaranteed and controlled, stirring is carried out when the temperature reaches 700 ℃, and a solvent and impurities in a magnesium solution are required to be continuously added in the stirring process to form a precipitate, and the precipitate falls into the bottom of the crucible to form bottom slag;
S4, after the solvent is stopped being added, introducing nitrogen into an exhaust device of a stirring device in the stirring and slag extracting integrated crucible, blowing the nitrogen from the bottom, and collecting bottom slag by a slag extracting device;
S5, sampling and detecting after slag extraction is finished, and standing the magnesium liquid for one hour after the components are qualified to obtain pure magnesium liquid;
s6, setting different weight of pure magnesium liquid according to different ingot molds, automatically pumping the pure magnesium liquid into the ingot mold of the continuous casting machine in an operating state, rotating the continuous casting machine according to the set frequency, operating the ingot mold filled with the magnesium alloy liquid from a casting position to a demolding position, namely realizing cooling and automatic demolding to obtain the magnesium alloy ingot,
The method is characterized in that in the step S2, the stirring and slag lifting integrated crucible comprises a refining crucible (101), lifting lugs (104) are symmetrically arranged on the outer side of the refining crucible (101), a combined frame (102) is arranged at the top of the refining crucible (101), a main shaft (108) is rotatably arranged at the center of the bottom of the combined frame (102), a stirring paddle (111) is welded and arranged on the outer side wall of the bottom end of the main shaft (108), an exhaust pipe (112) is welded and arranged at the bottom of the stirring paddle (111), the main shaft (108) is controlled to rotate through a gear transmission on the combined frame (102), slag lifting barrel supporting frames (103) are movably arranged on two sides of the main shaft (108) on the combined frame (102), an electric push rod (106) is connected to the bottom of the slag lifting barrel supporting frames (103), and a slag lifting barrel (110) is connected to the bottom of the electric push rod (106);
In step S3, the safety linkage alarm device includes a main circuit and an induction control circuit, the induction control circuit is connected on the main circuit, the main circuit includes a main control power supply (201) and a lifter controller (215) connected on the main control power supply, the induction control circuit is divided into a driving induction circuit and an infrared alarm circuit, the driving induction circuit is composed of a proximity switch (204) and a proximity switch relay (206), an infrared switch (207) and an infrared switch relay (208), an alarm device (205) and a switch one (210), a time relay (209) and a switch two (211) and a switch three (212) which are connected in series and then are connected in parallel, the proximity switch relay (206) controls the switch one (210) and the switch two (211), the infrared switch relay (208) controls the switch three (212), the infrared alarm circuit includes a power supply two (203), an infrared induction switch (213) and an infrared transmitter (214), the infrared induction switch (213) controls the infrared switch (207), and the lifter controller (215).
2. The method for producing a magnesium alloy ingot according to claim 1, wherein in step S2, the solvent comprises the following components: mgCl 2, KCl, naCl and fluorite powder.
3. The method according to claim 1, wherein in step S3, the stirring and slag lifting integrated crucible is further provided with a crucible safety emergency disposal furnace, so that a crucible leakage accident can be rapidly handled.
4. A method for producing magnesium alloy ingots according to claim 3, wherein the crucible safety emergency treatment furnace comprises a smelting crucible (301) and an inner heat insulation layer (305), and is characterized in that the surface of the smelting crucible (301) is provided with a crucible lifting lug (302), the interior of the smelting crucible (301) is provided with magnesium liquid (307), the top of the inner heat insulation layer (305) is fixedly provided with a hearth crucible ring bearing frame (303), the surface of the hearth crucible ring bearing frame (303) is fixedly provided with an outer heat insulation layer (306), the surface of the inner heat insulation layer (305) is provided with a refractory castable layer (304), the inner bottom of the outer heat insulation layer (306) is fixedly provided with a sloping plate (308), the surface of the inner heat insulation layer (305) is provided with a dust removal air guide pipeline (309), the free end of the dust removal air guide pipeline (309) penetrates through the refractory castable layer (304) and the outer heat insulation layer (306) and extends to the exterior of the outer heat insulation layer (306), and the bottom of the outer heat insulation layer (306) is movably provided with a magnesium liquid collecting groove (310).
5. The method according to claim 1, wherein in step S6, the casting mold on the casting machine is replaced with a mold quick-change device due to frequent replacement.
6. The method for producing magnesium alloy ingots according to claim 5, wherein the die quick-change device comprises a conveyor belt (401), a plurality of rollers (402) are arranged on the conveyor belt (401), a gravity sensor (405) is arranged at the tail end of the conveyor belt (401), the top of the gravity sensor (405) is flush with the top of the rollers (402), a first cylinder (403) is arranged at one side of the conveyor belt (401) and at the position corresponding to the gravity sensor (405), a lifting groove (406) is arranged at the position corresponding to the position of the gravity sensor (405) at the opposite side of the conveyor belt (401), a lifting device (408) is arranged below the lifting groove (406), two ends of the lifting groove (406) are opened, a second cylinder (409) is arranged at the opposite side of the gravity sensor (405), the gravity sensor (405) is parallel to the running direction of the conveyor belt (401) and is provided with a third cylinder (410), and the first cylinder (403), the second cylinder (409) and the third cylinder (410) are respectively provided with a second cylinder piston rod (409) and a third cylinder rod (404) which are connected with the first cylinder (409).
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