CN114951565A - Production method of magnesium alloy ingot - Google Patents
Production method of magnesium alloy ingot Download PDFInfo
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- CN114951565A CN114951565A CN202210622299.9A CN202210622299A CN114951565A CN 114951565 A CN114951565 A CN 114951565A CN 202210622299 A CN202210622299 A CN 202210622299A CN 114951565 A CN114951565 A CN 114951565A
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- crucible
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- slag
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 29
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 70
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 70
- 239000011777 magnesium Substances 0.000 claims abstract description 70
- 238000003756 stirring Methods 0.000 claims abstract description 65
- 239000002893 slag Substances 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 30
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000009749 continuous casting Methods 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims description 27
- 230000006698 induction Effects 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 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
- 239000001103 potassium chloride 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
- 239000011780 sodium chloride Substances 0.000 claims description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 description 14
- 239000013049 sediment Substances 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000009970 fire resistant effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000035618 desquamation Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002035 prolonged effect 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
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for producing 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 preparing raw magnesium, melting a solvent, hoisting the raw magnesium, refining at high temperature, stirring, slag extraction and casting, wherein a stirring and slag extraction integrated crucible is used in the refining process, a safety linkage alarm device is arranged in the process of hoisting the raw magnesium into the crucible to ensure the safety of the hoisting process, the stirring and slag extraction are simultaneously carried out in the stirring and slag extraction integrated crucible, the working time is reduced, the working efficiency is improved, a crucible safety emergency treatment furnace is arranged to rapidly treat crucible leakage, the influence and the harm caused by crucible leakage are reduced, the leaked magnesium liquid can be collected for recycling, the production cost is saved, a mold quick replacement device is used for quickly replacing a mold of a continuous casting machine, the work efficiency is improved and the labor intensity of the staff is reduced.
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
As a novel engineering material, the magnesium alloy is light in weight, high in specific strength and good in processability, and is widely applied to the fields of engineering structure parts and the like in the automobile industry, 5G products, aerospace and the like. With the increasing market demand, China has increasingly high requirements on high quality, high quality and multiple specifications of magnesium alloy as a magnesium production base for millions of tons of annual products.
In the production process of the existing magnesium alloy ingot, dolomite is made into a beautiful alloy ingot through a plurality of processes, a high-temperature refining process is required to be ensured, the process is important, and production enterprises at home and abroad generally stir and refine firstly and then blow out gas to remove slag, so that the process causes great burning loss waste of magnesium alloy, potential safety hazard caused by frequent lifting operation, yield gliding caused by prolonged process and time and the like; in the process of smelting and using the crucible, the metal or alloy melt is in contact with the inside and the outside of the crucible, the outside is heated and deformed by a heat source, and the inside is stirred by the high-temperature molten metal melt to cause the phenomena of cracking, peeling, penetration and the like of the crucible, so that the service life of the crucible is very limited, the high-temperature molten liquid leakage event is very easy to occur, and production accidents of safety, environmental protection and the like are caused;
meanwhile, the final casting is one of the important processes, and different customers have different requirements on ingot production, so that a casting mold needs to be frequently replaced, the mold is heavy, manual carrying is labor-consuming, the mold is manually lifted and replaced, and certain danger exists, and the potential safety hazard of crushing or smashing is caused; and the handling former magnesium process is high altitude construction, need use the hoist to hoist former magnesium and put into the crucible, still has the staff of coming and going walking in the passageway below in the hoist and mount process, has certain safe risk to the staff of passageway below.
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, large potential safety hazard and high labor intensity in the production process of the alloy ingot.
In order to achieve the above purpose, the invention provides the following technical scheme:
a production method of a magnesium alloy ingot, characterized by comprising:
s1, preparing raw magnesium through a magnesium preparation process, and collecting and storing the raw magnesium;
S2、adding a solvent into a stirring and slag extracting integrated crucible for melting in advance, wherein the stirring and slag extracting integrated crucible can simultaneously carry out 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 BaCl-free is adopted 2 The solvent of (4);
s3, hoisting the raw magnesium in the step S1 and putting the raw magnesium into a stirring slag-extracting integrated crucible for high-temperature melting, ensuring and controlling the safety of a hoisting area by adopting a safety linkage alarm device in the hoisting process, stirring when the temperature reaches 700 ℃, continuously adding a solvent and impurities in magnesium liquid to form precipitates in the stirring process, and allowing the precipitates to fall to the bottom of the crucible to form bottom slag;
s4, after the solvent is stopped being added, nitrogen is introduced into a stirring device exhaust device in the stirring and slag extracting integrated crucible, the nitrogen is blown from the bottom, and the slag extracting device collects bottom slag;
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 magnesium liquid weights for pure magnesium liquid according to different ingot molds, adding an automatic pump into the ingot mold of the continuous casting machine in a running state, rotating the continuous casting machine set according to the set frequency, and running the ingot mold filled with the magnesium alloy liquid from the casting position to the demolding position, so that cooling and automatic demolding are realized, and the magnesium alloy ingot is obtained.
The method comprises the steps of setting a stirring slag-lifting integrated crucible in a high-temperature refining process, lifting raw magnesium into the integrated crucible, adopting a safety linkage alarm device in a lifting process, ensuring the safety of a lifting area, adding a solvent after the raw magnesium enters the integrated crucible, stirring while lifting slag, utilizing an exhaust device below the crucible to lift slag, combining the two processes of stirring and slag lifting into one process, shortening refining time, standing after the slag lifting is finished, then entering a continuous casting machine for casting, and finally forming a magnesium alloy ingot.
Further, in step S2, the sediment integral type crucible is carried in the stirring includes the concise crucible, the outside symmetry of concise crucible is provided with the lug, the top of concise crucible is provided with the built-up frame, the positive department of bottom of built-up frame rotates and installs the main shaft, the stirring rake is installed in the bottom lateral wall welding of main shaft, the bottom welding of stirring rake installs the blast pipe, rotate through gear drive control main shaft on the built-up frame, the both sides that lie in the main shaft on the built-up frame are all movable and are provided with and carry the sediment bucket support frame, it is connected with electric putter to carry sediment bucket support frame bottom, electric putter' S bottom is connected with and carries the sediment bucket. The lug is used for lifting by crane the crucible, and the built-up block setting sets up the motor control main shaft in the top of crucible on the built-up block, and then the control stirring rake stirs, and the built-up block both sides set up and carry the sediment bucket, carry the up-and-down motion of sediment bucket through electric putter control and collect 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 sediment bucket and collect.
Further, in step S2, the solvent has the following composition: 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 master control power supply and a lifter controller connected to the master 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 and a proximity switch relay, an infrared switch and an infrared switch relay, an alarm device and a first switch, a time relay and a second switch, and a third switch, which are connected in series and then connected in parallel, and is connected to the first power supply, the first proximity switch relay control switch and the second switch, and the third infrared switch relay control switch, the infrared alarm circuit includes a second power supply, an infrared induction switch and an infrared emitter, the infrared induction switch controls the infrared switch, the infrared switch controls the lifting rod controller. Through setting up main circuit and induction control circuit, the main circuit provides the power of lifter controller, induction circuit divide into driving induction circuit and infrared alarm circuit again, driving induction 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, the warning lasts, make the staff of below work all withdraw from after the area, after the infrared switch intercommunication, time relay lasts a period of time after the intercommunication, with signal transmission to lifter controller department, control lifter controller sends the action of pole falling, empty and seal the intermediate channel, when guaranteeing the hoist and mount operation, all the other staff can not pass through in the below, promote the security.
Further, in step S3, the stirring and slag-extracting integrated crucible is further equipped with a crucible safety emergency treatment furnace, so that crucible leakage accidents can be quickly handled. The crucible is in the use of smelting, and metal or alloy melt and crucible inside and outside contact, and the outside is heated the heat source and is out of shape, and inside is caused the crucible and is very easily appeared crackle, desquamation, phenomenon such as penetrance by washing away that high temperature melting metal melt stirring brought, erosion or frequent intensification cooling process for the life of crucible is very limited, very easily takes place the high temperature melting liquid and reveals the incident, influences on-the-spot safety and environmental protection, consequently is equipped with a crucible safety emergency treatment stove and can handles the crucible fast and reveal the incident.
Further, emergent stove of dealing with of crucible safety is including smelting crucible and inside insulating layer, its characterized in that, the surface of smelting crucible is provided with the crucible lug, the inside of smelting crucible has held magnesium liquid, the top fixed mounting of inside insulating layer has furnace pot circle bearing frame, the fixed surface of furnace pot circle bearing frame installs outside insulating layer, the surface of inside insulating layer is provided with fire-resistant pouring material layer, the inboard bottom fixed mounting of outside insulating layer has the swash plate, the surface of inside insulating layer is provided with dust removal induced air pipeline, the free end of dust removal induced air pipeline runs through fire-resistant pouring material layer and outside insulating layer and extends to the outside of outside insulating layer, the bottom activity of outside insulating layer is pegged graft and is had the magnesium liquid collecting vat. This smelt crucible safety emergency treatment stove, be convenient for hoist and mount smelting crucible through the crucible lug, be convenient for support smelting crucible mechanical energy through furnace crucible circle bearing frame, through the fire-resistant pouring bed of material, inside insulating layer, the furnace that outside insulating layer constitutes avoids magnesium liquid to reveal and produces danger, through the external supporting dust collecting equipment of dust removal induced duct way, and then be convenient for absorb flue gas in the furnace, reduce workshop flue gas diffusion, through the swash plate with magnesium liquid water conservancy diversion to magnesium liquid collecting vat, retrieve magnesium liquid through the magnesium liquid collecting vat and recycle, the economic loss of reducible magnesium liquid scaling loss.
Further, in step S6, the casting mold on the casting machine is replaced with a mold quick replacement device because of frequent replacement. Because of different customers have different requirements to the ingot type of production, consequently need frequent change mould, and change the mould and be artifical manual change, not only consuming time hard, influence production output, the manual work lifts moreover and has certain danger, consequently sets up mould quick replacement device and changes 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 department of corresponding with the gravity inductor are provided with cylinder one, and the opposite side of conveyer belt and the position department of corresponding of gravity inductor are provided with the groove of lifting, the below in groove of lifting is equipped with elevating gear, lifts the groove both ends opening, and the groove of lifting is provided with cylinder two at the opposite side of gravity inductor, and the gravity inductor is being on a parallel with conveyer belt traffic direction and is being located the conveyer belt other one side and be equipped with cylinder three, the piston rod tip of cylinder one, cylinder two and cylinder three is equipped with trapezoidal push away the groove respectively, and the gravity inductor links to each other with cylinder one and cylinder two. The mould is transferred by arranging the roller conveying belt, the gravity sensor is arranged at the rear of the roller to transmit signals, the first cylinder and the third cylinder can move according to the signals, the first cylinder can push the mould into the lifting groove, the third cylinder can push the mould onto the conveying belt, the transfer in the mould dismounting and mounting process can be met, the lifting groove can lift the mould, the mould is dismounted conveniently, the labor intensity of workers is reduced, meanwhile, the piston rod ends of the three cylinders are respectively provided with the trapezoidal pushing grooves, and the mould can be stabilized to prevent the mould from sliding.
The crucible has the beneficial effects that the stirring and slag-extracting integrated crucible is arranged, the safety linkage alarm device is arranged in the process of hoisting the original magnesium to the crucible, the safety of the hoisting process is guaranteed, the stirring and slag extraction are simultaneously carried out in the stirring and slag-extracting integrated crucible, the working time is reduced, the working efficiency is improved, the crucible safety emergency treatment furnace is arranged for quickly treating the leakage of the crucible, the influence and the harm caused by the leakage of the crucible are reduced, the leaked magnesium liquid can be collected for recycling, the production cost is saved, the quick mold replacement device is used for quickly replacing the mold of the continuous casting machine, the working efficiency is improved, and the labor intensity of workers 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 mold 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 workers is reduced, and the working efficiency and the quality of the produced alloy ingot are improved.
Drawings
FIG. 1 is a schematic structural view of an integrated stirring and slag extracting crucible in a preferred embodiment of a method for producing a magnesium alloy ingot according to the present invention;
FIG. 2 is a schematic view of the internal structure of the stirring and slag extracting integrated crucible;
FIG. 3 is a main circuit diagram of the safety interlock warning device in the preferred embodiment;
FIG. 4 is a schematic structural diagram of a safe emergency crucible disposal furnace in the preferred embodiment;
FIG. 5 is a cross-sectional view of FIG. 4;
fig. 6 is a schematic diagram of the structure of the quick mold change device in the preferred embodiment.
Wherein: 101. refining the crucible; 102. a combined rack; 103. a slag extracting barrel supporting frame; 104. lifting lugs; 106. an electric push rod; 108. a main shaft; 110. a slag extraction barrel; 111. a stirring paddle; 112. an exhaust pipe; 201. a master control power supply; 202. a first power supply is distributed; 203. a second power supply; 204. a proximity switch; 205. an alarm device; 206. a proximity switch relay; 207. an infrared switch; 208. an infrared switch relay; 209. a time relay; 210. a first switch; 211. a second switch; 212. a third switch; 213. an infrared inductive switch; 214. an infrared emitter; 215. a lifter controller; 301. smelting a crucible; 302. a crucible lifting lug; 303. a hearth crucible ring bearing frame; 304. a refractory castable layer; 305. an inner thermal insulation layer; 306. an outer insulating layer; 307. magnesium liquid; 308. a sloping plate; 309. a dust removal induced draft duct; 310. a magnesium liquid collecting tank; 401. a conveyor belt; 402. a roller; 403. a first cylinder; 404. a trapezoidal push groove; 405. a gravity sensor; 406. a lifting groove; 408. a lifting device; 409. a second air cylinder; 410. and a third air cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings.
A production method of a magnesium alloy ingot, the production method comprising:
s1, preparing raw magnesium by a magnesium preparation process, preparing the raw magnesium by a Pidgeon magnesium smelting method, and collecting and storing the raw magnesium;
s2, the refining crucible used for refining the raw magnesium is a stirring and slag-extracting integrated crucible which can simultaneously carry out stirring and slag-extracting operations, as shown in figures 1 and 2, the stirring and slag-extracting integrated crucible comprises a refining crucible 101, lifting lugs 104 are symmetrically arranged on the outer side of the refining crucible 101 and are used for lifting the refining crucible 101, a combination frame 102 is arranged on the top of the refining crucible 101, a main shaft 108 is rotatably arranged at the center of the bottom of the combination frame 102, a stirring paddle 111 is welded on the outer side wall of the bottom end of the main shaft 108, an exhaust pipe 112 is welded on the bottom of the stirring paddle 111, a gas receiving port of the exhaust pipe 112 is arranged on the top of the main shaft 108, a motor is arranged on the combination frame 102, the main shaft 108 is controlled to rotate through a motor control gear, the purpose of stirring is achieved, slag-extracting barrel support frames 103 are movably arranged on two sides of the main shaft 108 on the combination frame 102, an electric push rod 106 is connected to the bottom of the slag-extracting barrel support frames 103, the bottom of the electric push rod 106 is connected with two slag lifting barrels 110, the two slag lifting barrels 110 are symmetrically arranged on the combined frame 102, and the electric push rod 106 is arranged to control the slag lifting barrels 110 to move up and down to collect generated slag;
adding solvent into stirring and slag extracting integrated crucible, melting, wherein the main component of the solvent is chloride, and BaCl-free 2 The solvent comprises the following components: MgCl 2 KCl, NaCl andand fluorite powder.
S3, hoisting the original magnesium in the step S1 into a stirring and slag-extracting integrated crucible, ensuring and controlling the safety of a hoisting area by adopting a safety linkage alarm device in the hoisting process, wherein a channel is arranged below the hoisting area, and potential safety hazards exist for staff below the hoisting area, so that the safety linkage alarm device is arranged and comprises a main circuit and an induction control circuit, the induction control circuit is connected onto the main circuit, the main circuit comprises a master control power supply 201 and a lifting rod controller 215 connected onto the master 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 204, a proximity switch relay 206, an infrared switch 207, an infrared switch relay 208, an alarm device 205, a switch I210, a time relay 209, a switch II 211 and a switch III 212 in series and then connecting the four circuits in parallel, the infrared alarm circuit comprises a first power supply 202, a proximity switch relay 206, a first switch 210, a second switch 211, an infrared switch relay 208, a third switch 212, an infrared alarm circuit, an infrared switch 213 and an infrared emitter 214, wherein the infrared switch 213 controls the infrared switch 207, and the infrared switch 207 controls a lifting rod controller 215. After the hoist and mount process begins, the hoist gets into the work area after, begins to report to the police through infrared ray induction and proximity switch linkage alarm device, and infrared switch intercommunication makes the staff withdraw from the passageway through time relay control lifter delay pole drop simultaneously, and below passageway personnel are through the hidden danger that exists when having solved the jack-up, and after hoist and mount finished leaving the work area, infrared signal was sensed to the lifter, and the lifter rises the pole, and the below passageway is normally current.
After raw magnesium enters the stirring and slag extracting integrated crucible, stirring when the temperature reaches 700 ℃, continuously adding a solvent and impurities in magnesium liquid to form precipitates in the stirring process, and dropping the precipitates 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 the stirring device in the stirring and slag extracting integrated crucible, and the nitrogen 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 to completely extract the bottom slag;
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 magnesium liquid weights for pure magnesium liquid according to different ingot molds, adding an automatic pump into the ingot mold of the continuous casting machine in a running state, rotating the continuous casting machine set according to the set frequency, and running the ingot mold filled with the magnesium alloy liquid from the casting position to the demolding position, so that cooling and automatic demolding are realized, and the magnesium alloy ingot is obtained.
Furthermore, because the crucible frequently rises and falls the temperature in use for the life of crucible is very limited, very easily takes place the high temperature molten liquid and reveals the incident, consequently stirs and carries sediment integral type crucible and still is equipped with crucible safety emergency treatment stove, can handle the crucible fast and reveal the accident. The crucible safety emergency treatment furnace comprises a smelting crucible 301 and an internal 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 mounted at the top of the internal heat insulation layer 305, an external heat insulation layer 306 is fixedly mounted on the surface of the hearth crucible ring bearing frame 303, a refractory castable layer 304 is arranged on the surface of the internal heat insulation layer 305, an inclined plate 308 is fixedly mounted at the bottom of the inner side of the external heat insulation layer 306, a dust removal air guide pipeline 309 is arranged on the surface of the internal heat insulation layer 305, the free end of the dust removal air guide pipeline 309 penetrates through the refractory castable layer 304 and the external heat insulation layer 306 and extends to the outside of the external heat insulation layer 306, and a magnesium liquid collecting tank 310 is movably inserted into the bottom of the external heat insulation layer 306.
Be convenient for hoist smelting crucible 301 through crucible lug 302, be convenient for support smelting crucible 301 mechanical energy through furnace crucible circle bearing frame 303, through refractory castable layer 304, inside insulating layer 305, the furnace that outside insulating layer 306 constitutes avoids magnesium liquid 307 to reveal and produces danger, through the external supporting dust collecting equipment of dust removal induced draft pipeline 309, and then be convenient for absorb flue gas in the furnace, reduce workshop flue gas diffusion, in magnesium liquid 307 water conservancy diversion arrives magnesium liquid collecting vat 310 through swash plate 308, retrieve through magnesium liquid collecting vat 310 and recycle magnesium liquid 307, the economic loss of reducible magnesium liquid 307 loss of burning loss, handle the crucible fast through crucible safety emergency treatment stove, reduce workshop flue gas diffusion, and can retrieve the magnesium liquid of revealing and recycle, and the production cost is reduced.
Further, different customers have different requirements for the ingot type to be produced, and thus, the mold on the casting machine needs to be frequently replaced, and thus, the casting mold is replaced using a mold quick replacement device. The quick die changing device comprises a conveyor belt 401, a plurality of rolling shafts 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 rolling shafts 402, a first air cylinder 403 is arranged on one side of the conveyor belt 401 and corresponds to the gravity sensor 405, a lifting groove 406 is arranged on the opposite side surface of the conveyor belt 401 and corresponds to the gravity sensor 405, a lifting device 408 is arranged below the lifting groove 406, two ends of the lifting groove 406 are open, a second air cylinder 409 is arranged on the opposite side surface of the lifting groove 406 on the gravity sensor 405, a third air cylinder 410 is arranged on the gravity sensor 405 on the other side of the conveyor belt 401 parallel to the running direction of the conveyor belt 401, the ends of the piston rods of the first air cylinder 403, the second air cylinder 409 and the third air cylinder 410 are respectively provided with a trapezoidal push groove 404, and a gravity sensor 405 is connected with the first air cylinder 403 and the second air cylinder 409.
When a mold needs to be replaced, the lifting device 408 lifts the lifting groove 406 to the position of the mold to be positioned, screws of the mold of the existing casting machine are removed after the positioning, the mold descends onto the lifting groove 406 after the mold is removed, the second air cylinder 409 pushes the mold onto the gravity sensor 405 after the lifting groove 406 descends, the gravity sensor 405 gives a signal, the third air cylinder 410 pushes the mold onto the conveyor belt 401, the mold is conveyed out, and the operation is repeated until the mold removal operation is finished; then, a new mold to be replaced is placed on the conveyor belt 401, when the mold is conveyed to the gravity sensor 405, the gravity sensor 405 gives a signal, the mold is pushed into the lifting groove 406 through the first air cylinder 403, the lifting groove 406 is lifted to the mold installation position, the installation screws are fastened after positioning, the operation is repeated until the installation of the new mold is finished, and manual repeated carrying and lifting operation is not needed after the device is used, so that the labor intensity of workers is reduced, and the problems of potential safety hazards and the like are solved.
According to the invention, the stirring and slag-extracting integrated crucible is arranged, the safety linkage alarm device is arranged in the process of hoisting the original magnesium to the crucible, the safety of the hoisting process is ensured, the stirring and slag extraction are simultaneously carried out in the stirring and slag-extracting integrated crucible, the working time is reduced, the working efficiency is improved, the crucible safety emergency treatment furnace is arranged for quickly treating the leakage of the crucible, the influence and the harm 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 quick replacement device is used for quickly replacing the mold of the continuous casting machine, the working efficiency is improved, and the labor intensity of workers 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 mold 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 workers is reduced, and the working efficiency and the quality of the produced alloy ingot are improved.
Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that the invention has been described in detail with reference to preferred embodiments, and that those skilled in the art will be able to understand that all modifications and equivalent arrangements not described in detail in the embodiment of the invention are within the scope of the appended claims.
Claims (8)
1. A production method of a magnesium alloy ingot, characterized by comprising:
s1, preparing raw magnesium through a magnesium preparation process, and collecting and storing the raw magnesium;
s2, adding the solvent into the stirring and slag extracting integrated crucible for melting in advance, wherein the stirring and slag extracting integrated crucible can simultaneously carry out stirring and slag extracting operations, and the stirring device in the stirring and slag extracting integrated crucible is internally provided with an exhaust deviceThe slag extracting device can move up and down, the main component of the solvent is chloride, and BaCl-free solvent is adopted 2 A solvent of (a);
s3, hoisting the raw magnesium in the step S1 and putting the raw magnesium into a stirring slag-extracting integrated crucible for high-temperature melting, ensuring and controlling the safety of a hoisting area by adopting a safety linkage alarm device in the hoisting process, stirring when the temperature reaches 700 ℃, continuously adding a solvent and impurities in magnesium liquid to form precipitates in the stirring process, and allowing the precipitates to fall to the bottom of the crucible to form bottom slag;
s4, after the solvent is stopped being added, nitrogen is introduced into a stirring device exhaust device in the stirring and slag extracting integrated crucible, the nitrogen is blown from the bottom, and the slag extracting device collects bottom slag;
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 magnesium liquid weights for pure magnesium liquid according to different ingot molds, adding an automatic pump into the ingot mold of the continuous casting machine in a running state, rotating the continuous casting machine set according to the set frequency, and running the ingot mold filled with the magnesium alloy liquid from the casting position to the demolding position, so that cooling and automatic demolding are realized, and the magnesium alloy ingot is obtained.
2. A method of producing a magnesium alloy ingot according to claim 1, wherein, in step S2, slag integral type crucible is carried in stirring includes refining crucible (101), the outside symmetry of refining crucible (101) is provided with lug (104), the top of refining crucible (101) is provided with combined bay (102), main shaft (108) are installed in the rotation of the centre department in bottom of combined bay (102), stirring rake (111) are installed in the bottom lateral wall welding of main shaft (108), blast pipe (112) are installed in the bottom welding of stirring rake (111), it rotates through gear drive control main shaft (108) on combined bay (102), the equal activity in both sides of main shaft (108) is provided with carries slag barrel support frame (103) on combined bay (102), carry slag barrel support frame (103) bottom and be connected with electric putter (106), the bottom of electric putter (106) is connected with carries slag barrel (110).
3. A magnesium as claimed in claim 1The method for producing an alloy ingot is characterized in that in step S2, the solvent comprises the following components: MgCl 2 KCl, NaCl and fluorite powder.
4. A method for producing a magnesium alloy ingot according to claim 1, wherein in step S3, the safety interlock warning device comprises a main circuit and an induction control circuit, the induction control circuit is connected to the main circuit, the main circuit comprises a master control power supply (201) and a lifter controller (215) connected to the master control power supply, the induction control circuit is divided into a driving induction circuit and an infrared warning circuit, the driving induction circuit is composed of a proximity switch (204), a proximity switch relay (206), an infrared switch (207), an infrared switch relay (208), a warning device (205), a first switch (210), a time relay (209), a second switch (211) and a third switch (212), which are connected in series and then connected in parallel, and is connected to the first power supply (202), the proximity switch relay (206) controls the first switch (210) and the second switch (211), the infrared switch relay (208) controls the switch III (212), the infrared alarm circuit comprises a power distribution source II (203), an infrared induction switch (213) and an infrared emitter (214), the infrared induction switch (213) controls the infrared switch (207), and the infrared switch (207) controls the lifting rod controller (215).
5. A method for producing a magnesium alloy ingot according to claim 1, wherein in step S3, the stirring and slag-extracting integrated crucible is further equipped with a crucible safety emergency disposal furnace, so that a crucible leakage accident can be quickly dealt with.
6. The production method of the magnesium alloy ingot according to claim 5, wherein the crucible safety emergency treatment furnace comprises a melting crucible (301) and an internal heat insulation layer (305), and is characterized in that a crucible lifting lug (302) is arranged on the surface of the melting crucible (301), magnesium liquid (307) is contained in the melting crucible (301), a hearth crucible ring bearing frame (303) is fixedly installed at the top of the internal heat insulation layer (305), an external heat insulation layer (306) is fixedly installed on the surface of the hearth crucible ring bearing frame (303), a refractory castable layer (304) is arranged on the surface of the internal heat insulation layer (305), an inclined plate (308) is fixedly installed at the bottom of the inner side of the external heat insulation layer (306), a dust removal air guide pipeline (309) is arranged on the surface of the internal heat insulation layer (305), and the free end of the dust removal air guide pipeline (309) penetrates through the refractory layer (304) and the external castable layer (306) and extends to the external heat insulation layer (306) And a magnesium liquid collecting tank (310) is movably inserted at the bottom of the outer heat insulation layer (306).
7. A method for producing a magnesium alloy ingot according to claim 1, wherein in step S6, the casting mold on the casting machine is replaced with a mold quick-replacement device because the casting mold is frequently replaced.
8. The production method of the magnesium alloy ingot according to claim 7, wherein the mold quick-changing device comprises a conveyor belt (401), a plurality of rolling shafts (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 rolling shafts (402), a first air cylinder (403) is arranged on one side of the conveyor belt (401) and corresponds to the gravity sensor (405), a second air cylinder (409) is arranged on the opposite side face of the conveyor belt (401) and corresponds to the gravity sensor (405), a lifting device (408) is arranged below the lifting groove (406), two ends of the lifting groove (406) are open, a second air cylinder (409) is arranged on the opposite side face of the gravity sensor (405), a third air cylinder (410) is arranged on the gravity sensor (405) and is parallel to the running direction of the conveyor belt (401), the end parts of piston rods of the first air cylinder (403), the second air cylinder (409) and the third air cylinder (410) are respectively provided with a trapezoidal push groove (404), and the gravity sensor (405) is connected with the first air cylinder (403) and the second air cylinder (409).
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| CN202210622299.9A CN114951565B (en) | 2022-06-01 | Production method of magnesium alloy ingot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210622299.9A CN114951565B (en) | 2022-06-01 | Production method of magnesium alloy ingot |
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| CN114951565A true CN114951565A (en) | 2022-08-30 |
| CN114951565B CN114951565B (en) | 2024-07-19 |
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