CN108480610B - Direct forming device for waste casting - Google Patents
Direct forming device for waste casting Download PDFInfo
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- CN108480610B CN108480610B CN201810529611.3A CN201810529611A CN108480610B CN 108480610 B CN108480610 B CN 108480610B CN 201810529611 A CN201810529611 A CN 201810529611A CN 108480610 B CN108480610 B CN 108480610B
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- 238000005266 casting Methods 0.000 title claims abstract description 53
- 239000002699 waste material Substances 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 148
- 239000010959 steel Substances 0.000 claims abstract description 148
- 239000002893 slag Substances 0.000 claims abstract description 62
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000003112 inhibitor Substances 0.000 claims description 17
- 230000006698 induction Effects 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 3
- 230000005764 inhibitory process Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 19
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 239000003607 modifier Substances 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000002910 solid waste Substances 0.000 abstract description 2
- 230000001629 suppression Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 229910000805 Pig iron Inorganic materials 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000007528 sand casting Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/04—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by weight
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a waste casting residue direct forming device, and belongs to the field of ladle casting residue recovery devices. The invention comprises a drainage mechanism and a forming mechanism; the drainage mechanism is used for providing pouring residual molten steel; the forming mechanism comprises: the separator is arranged in a hollow way, the bottom of the separator is provided with a slag discharging door which is obliquely arranged, the upper end of the slag discharging door is rotationally connected with a door shaft arranged on the side surface of the separator, and the lower end of the slag discharging door is matched and connected with a door bolt; a separator outlet is arranged between the lower end of the slag discharging door and the inner side wall of the separator; and (3) casting the mold. The invention aims to overcome the defect that the casting residue is taken as the raw materials of scrap steel, slag modifier and the like to be put into the smelting process again in the prior art, and the casting residue value is not fully exerted, and provides a device for separating molten steel from the mixture of the scrap molten steel and the steel slag and directly forming metal components, so that the scrap resources are directly regenerated into suitable and usable final products, the utilization efficiency of the resources is improved, and the solid waste is reduced.
Description
Technical Field
The invention relates to the field of ladle surplus recovery devices, in particular to a waste surplus direct forming device which is suitable for recycling waste surplus resources in steel production flow.
Background
In the continuous casting process of the current steel production flow, in order to prevent vortex generated in molten steel from winding steel slag on the surface of the molten steel into the molten steel and discharging the steel from a ladle nozzle together at the end of casting of each ladle, the ladle nozzle is usually closed to stop casting when the molten steel has a higher liquid level, and a certain amount of casting residue, namely casting residue or casting residue, is generated in the ladle. The casting surplus consists of residual molten steel in the steel ladle and steel slag covered on the surface of the molten steel, and the vortex can roll the steel slag into the molten steel to form large-size inclusions, so that the upper limit of the requirements of most steel types on the sizes of the inclusions is exceeded, and the casting cannot be continued, wherein the molten steel accounts for about 1/3 of the total weight. After the ladle nozzle is closed, the ladle is adjusted away from the pouring station, and the ladle nozzle is blocked by solidified molten steel and cannot be opened again, so that the mixture in the ladle is poured out to form waste.
The existing treatment methods for the wastes mainly comprise a hot splashing method and a dry slag method. Both of these methods have their own drawbacks. Hot splashing method: the method is very easy to cause splashing, and a large amount of dust and mist are generated to cause manual operation difficulty; moreover, the steel water in the casting is solidified into a large block, which brings difficulty for subsequent treatment. Dry slag method: pouring out the whole after the casting is cooled, and processing by combining a drop hammer and cutting; however, the method can cause bonding of the slag pot, the residual slag pot is not easy to fall off, and the slag pot is scrapped when serious; moreover, the poured steel slag blocks are too large, and the treatment is labor-and time-consuming.
Related patent publication about recycling technology of surplus is disclosed in the prior art, for example, patent publication No.: CN 102605115a, publication date: 2012, 07, 25, the invention is named: the technical method for producing steel shots by granulating ladle casting residues adopts a separation method, and the application adopts a separation method to carry out intensified cooling on ladle slag liquid drops so as to cool and solidify the liquid drops into steel shots and small slag balls in the flight process; patent publication No.: CN 107119173a, publication date: the invention is characterized by comprising the following components in 2017, 09 and 01: a slag modifier and a preparation method thereof, the application uses surplus water as a raw material of the slag modifier; patent publication No.: CN 106521097a, publication date: 22 days of 2017, 03 months, the invention is named: slag foamer pellets and methods of making and using the same, the application uses surplus as raw material for the foamer.
In summary, researchers have conducted some recycling researches on the ladle surplus, and although the content of the inclusion in the surplus molten steel is high, the molten steel in the surplus is used as high-quality molten steel after smelting, and is used as raw materials such as scrap steel, slag modifier and the like to be put into a smelting process again at present, so that the greatest advantage of the molten steel is not exerted, and the value of the molten steel is still to be fully mined. Therefore, how to overcome the defect that the casting residue is taken as the raw materials such as scrap steel, slag modifier and the like to be put into the smelting process again and the casting residue value is not fully exerted in the prior art is a technical problem which needs to be solved in the prior art.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to overcome the defect that the casting residue is taken as the raw materials of scrap steel, slag modifier and the like to be put into the smelting process again in the prior art, and the casting residue value is not fully exerted, and provides a device for separating molten steel from the mixture of the scrap molten steel and the steel slag and directly forming metal components, so that the scrap resources are directly regenerated into suitable and usable final products, the utilization efficiency of the resources is improved, and the solid waste is reduced.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the invention relates to a waste casting direct forming device, which comprises a drainage mechanism and a forming mechanism; the drainage mechanism is used for providing pouring residual molten steel; the molding mechanism includes:
the separator is arranged in a hollow way, the bottom of the separator is provided with a slag discharging door which is obliquely arranged, the upper end of the slag discharging door is rotationally connected with a door shaft arranged on the side surface of the separator, and the lower end of the slag discharging door is matched and connected with a door bolt; the upper end of the separator is a separator inlet, and a separator outlet is arranged between the lower end of the slag discharging door and the inner side wall of the separator;
and the upper part of the casting mould is provided with a molten steel inlet which is positioned below the separator outlet.
As a further improvement of the invention, the separator is circumferentially provided with an induction coil.
As a further improvement of the invention, a pouring riser is arranged on the molten steel inlet, and the outlet of the separator is communicated with the pouring riser through a diversion nozzle.
As a further improvement of the invention, a temperature measuring piece is arranged inside the separator.
As a further development of the invention, the casting mould is arranged on the weighing piece.
As a further improvement of the invention, the separator inlet is detachably covered with a heat-insulating cover.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) In the invention, the separator is used for receiving the mixture of molten steel and steel slag in the ladle at the end of pouring, the heat insulation cover is used for reducing the heat radiation of the mixture in the separator, and the induction coil is used for heating the mixture in the separator so as to ensure the fluidity of the molten steel; molten steel enters a casting mould through a water guide nozzle, and different steel structural members are formed according to the cavity structure of the casting mould; the steel slag is discharged out of the separator through a slag discharging door; the weighing piece monitors the casting process of the casting mould through weight change; the temperature in the separator is detected through the temperature measuring piece, and the power of the induction coil is correspondingly controlled.
(2) According to the invention, the steel slag and the molten steel in the casting are separated under the thermal state condition by utilizing gravity, so that the separation cost is low, meanwhile, the physical sensible heat of the steel slag and the molten steel is reserved, the steel slag and the molten steel can be subjected to the next treatment under the thermal state condition, the heat is fully utilized, the waste of the heat is avoided, and the economic benefit is improved.
(3) In the invention, molten steel in the surplus is directly molded into a final product, the molten steel which is smelted is prevented from being smelted again only as scrap steel, the existing heat and high-quality molten steel resources are fully utilized, the waste resources are converted into useful products, the maximization of resource utilization is realized, if the molten steel in the surplus is treated according to the existing technology, the value = weight x the price of the scrap steel, if the molten steel in the surplus is treated according to the technology of the patent, the value = number x the price of structural members, and the economic benefit is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a molding mechanism in an embodiment;
FIG. 2 is a schematic structural view of a drainage mechanism according to an embodiment;
FIG. 3 is a schematic cross-sectional view of a swirl inhibitor in an embodiment;
FIG. 4 is a schematic top view of an exemplary embodiment of a swirler;
FIG. 5 is a schematic view of the structure of a water plug according to the embodiment;
FIG. 6 is a schematic view of a drainage portion in an embodiment;
FIG. 7 is a schematic diagram of a flow diverter in an embodiment;
FIG. 8 is a flow chart of a method of direct molding waste gate.
Reference numerals in the schematic drawings illustrate: 1. a vortex inhibitor; 101. a swirl suppressing disk; 102. a joint member; 103. a support; 2. the bottom of the ladle; 3. a drainage device; 301. an inlet of the drainage device; 302. a drainage device outlet; 303. a first accommodating cavity; 304. a second accommodating cavity; 401. an upper slide plate; 402. a lower slide plate; 5. a nozzle plug; 501. a first side; 502. a second side; 503. chamfering; 6. a drainage part; 601. a through hole; 602. a wrapping layer; 603. jacking up the inclined plane; 7. a push rod; 8. a long water gap; 9. a temperature measuring device; 1001. a separator; 1002. an induction coil; 1003. a thermal insulation cover; 1004. a door spindle; 1005. a slag discharging door; 1006. a door bolt; 1007. a diversion nozzle; 1008. casting mould; 1009. casting a riser; 1010. a temperature measuring member; 1011. and a weighing piece.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.
Example 1
1-7, the waste casting direct forming device of the embodiment comprises a drainage mechanism and a forming mechanism.
Wherein, drainage mechanism is used for providing pouring surplus molten steel, and specifically, drainage mechanism includes: the upper end of the drainage device 3 is provided with a drainage device inlet 301, the lower end of the drainage device 3 is provided with a drainage device outlet 302, and a drainage channel is formed in the drainage device 3 from the drainage device inlet 301 to the drainage device outlet 302; two sides of the drainage channel in the drainage device 3 are respectively provided with a first accommodating cavity 303 and a second accommodating cavity 304; the vortex suppressor 1, the vortex suppressor 1 comprises a vortex suppressor disc 101, the lower end of the vortex suppressor disc 101 is connected with a connector piece 102 with a T-shaped structure, the connector piece 102 is arranged in a water gap plug 5, and the water gap plug 5 can be inserted into a drainage channel from a drainage device inlet 301; a plurality of supporting pieces 103 extending upwards are connected to the periphery of the swirling plate 101; and a drainage portion 6, wherein the drainage portion 6 is disposed in the first accommodating cavity 303, one end of the drainage portion 6 is connected with the push rod 7, and the other end of the drainage portion 6 is opposite to the second accommodating cavity 304 (the push rod 7 is driven by the hydraulic mechanism, and the drainage portion 6 can be pushed from the first accommodating cavity 303 to the limiting position of the second accommodating cavity 304). The water gap plug 5 comprises a first side surface 501 and a second side surface 502, wherein the first side surface 501 is attached to the inner wall of the drainage channel; the second side 502 is an inclined plane inclined from the top end to the bottom end, the top end of the second side 502 is attached to the inner wall of the drainage channel, and the interval between the second side 502 and the inner wall of the drainage channel gradually expands from top to bottom; the bottom end of the second side surface 502 is provided with a chamfer 503, and the top of the other end of the drainage part 6 is provided with a jacking inclined surface 603 which is parallel to the chamfer 503; the drainage part 6 is provided with a through hole 601 from top to bottom, the periphery of the through hole 601 is wrapped with a wrapping layer 602, and the outer surface of the wrapping layer 602 is attached with a metal material. The inlet 301 of the flow diverter is positioned below the water gap of the ladle bottom 2, the outlet 302 of the flow diverter is positioned above the long water gap 8, and specifically, an upper sliding plate 401 and a lower sliding plate 402 which are mutually overlapped are arranged between the outlet 302 of the flow diverter and the upper end of the long water gap 8, and through holes are respectively arranged on the upper sliding plate 401 and the lower sliding plate 402; the outer side wall of the drainage device 3 is provided with a temperature measuring device 9, and the temperature measuring device 9 is a wireless temperature sensor 9 which can monitor the change of the internal temperature of the drainage device 3 in real time.
The forming mechanism is used for receiving pouring residual molten steel flowing out from the lower end of the long nozzle 8 at the end of pouring of the ladle, and directly recycling the pouring residual molten steel, and the specific forming mechanism comprises: the separator 1001, the inside of the separator 1001 is hollow, the bottom of the separator 1001 is a slag discharging door 1005 which is obliquely arranged, the upper end of the slag discharging door 1005 is rotatably connected with a door shaft 1004 arranged on the side face of the separator 1001, and the lower end of the slag discharging door 1005 is cooperatively connected with a door bolt 1006 (the lower end of the slag discharging door 1005 can be put down from the door bolt 1006 through the movement of the door bolt 1006, so as to facilitate the removal of steel slag in the separator 1001); the upper end of the separator 1001 is a separator inlet, and a separator outlet is arranged between the lower end of the slag discharging door 1005 and the inner side wall of the separator 1001; a casting mold 1008, and a molten steel inlet is provided at an upper portion of the casting mold 1008, and is positioned below the separator outlet. Wherein, the separator 1001 is circumferentially provided with an induction coil 1002; a pouring riser 1009 is arranged on the molten steel inlet, and the outlet of the separator is communicated with the pouring riser 1009 through a water diversion nozzle 1007; the casting mold 1008 is arranged on the weighing piece 1011, and a temperature measuring piece 1010 is arranged inside the separator 1001; the separator inlet is removably capped with a thermal cover 1003.
Referring to fig. 8, the method for directly forming the waste casting according to the present embodiment includes the following steps:
step A, preparing the above waste casting direct forming device, and manufacturing a combined body of the vortex inhibitor 1 and the nozzle plug 5:
after the cyclone suppressor 1 is manufactured by refractory materials in batches, a hollow mould with the inner cavity size consistent with that of the water gap plug 5 is sleeved on the joint piece 102 of the T-shaped structure of the cyclone suppressor 1, the central line of the hollow mould is overlapped with that of the joint piece 102, molten iron is poured into the inner cavity of the hollow mould, so that the molten iron and the joint piece 102 are seamlessly fused, the solidified surface of the molten iron is polished, and the water gap plug 5 is formed;
step B, installing a drainage device 3 and a water gap plug 5:
in the ladle hot repair process, a new drainage device 3 is installed below the ladle bottom 2, and then a water gap plug 5 is inserted into a drainage channel from a drainage device inlet 301 to finish installation;
step C, filling molten steel into a ladle:
after the ladle after hot repair is filled with molten steel and steel slag and refined, the ladle is lifted to a ladle turret to prepare for casting, and as the material of the nozzle plug 5 is pig iron and the material of the vortex suppressor 1 is refractory, the weight of the nozzle plug 5 is larger than that of the vortex suppressor 1, so that the molten steel and the nozzle plug 5 are isolated by the vortex suppressor disc 101, and the combination of the vortex suppressor 1 and the nozzle plug 5 is unlikely to float in the molten steel at the moment;
step D, pushing the drainage part 6 to jack up the water gap plug 5 upwards, so that molten steel enters a drainage channel from the inlet 301 of the drainage device:
under the drive of a hydraulic mechanism, the push rod 7 pushes the drainage part 6 to move from the first accommodating cavity 303 to the second accommodating cavity 304 until the center line of the through hole 601 on the drainage part 6 coincides with the center line of the drainage channel in the drainage device 3, and the jacking inclined plane 603 on the drainage part 6 is contacted with the inclined plane 503 of the nozzle plug 5 after the drainage part 6 is pushed, so that the nozzle plug 5 is jacked upwards, a gap is formed between the vortex suppression disc 101 and the ladle bottom 2, molten steel is guided to enter the drainage channel from the inlet 301 of the drainage device, and at the moment, the nozzle plug 5 is melted into a liquid state by high-temperature molten steel, so that molten steel smoothly flows down;
step E, the nozzle plug 5 is melted by the molten steel, the cyclone suppressor 1 floats upward, and the suspended state of the cyclone suppressor 1 in the molten steel is changed to the downward side connected with the supporting member 103:
a gap exists between the vortex suppression disc 101 and the ladle bottom 2, meanwhile, the nozzle plug 5 is completely melted by molten steel, the static pressure of the molten steel which forms a downward extrusion effect on the vortex suppression disc 101 originally is counteracted, the gravity of the nozzle plug 5 also disappears, and the vortex suppressor 1 floats up into the molten steel under the buoyancy effect because the density of the vortex suppressor 1 is far smaller than that of the molten steel and larger than that of steel slag; the vortex inhibitor 1 is suspended below the steel slag surface of the steel ladle, and as the nozzle plugs 5 connected to the joint pieces 102 of the vortex inhibitor 101 are melted, the periphery of the vortex inhibitor 101 is connected with a plurality of supporting pieces 103, the weight of the whole vortex inhibitor 1 is unevenly distributed, and the gravity center is distributed on the side connected with the supporting pieces 103, the suspended state of the vortex inhibitor 1 in the molten steel is changed into the state that the side connected with the supporting pieces 103 is downward;
step F, moving an upper sliding plate 401 and a lower sliding plate 402 to enable molten steel to flow out of the drainage part 6 into the long water gap 8, and enabling the molten steel to flow into a tundish and a crystallizer from the lower end of the long water gap 8 in sequence;
after the temperature measuring device 9 arranged on the drainage part 6 senses that the temperature in the drainage part 6 is suddenly increased, the upper sliding plate 401 and the lower sliding plate 402 are immediately moved, so that the center lines of the upper through holes of the upper sliding plate 401 and the lower sliding plate 402 coincide with the center line of the outlet 302 of the drainage device, molten steel is guided to flow out of the drainage part 6 into the long water gap 8, and the molten steel flows into a tundish and a crystallizer from the lower end of the long water gap 8 in sequence for continuous casting production;
step G, the cyclone inhibitor 1 falls above the ladle bottom 2 nozzle, molten steel flows into the ladle bottom 2 nozzle from among a plurality of supporting pieces 103 of the cyclone inhibitor 1, and an upper sliding plate 401 and a lower sliding plate 402 are moved, so that molten steel stops flowing into the long nozzle 8:
at the end of pouring, along with gradual decrease of molten steel, the liquid level of the molten steel in the ladle gradually moves downwards, and the vortex inhibitor 1 is gradually sucked to and falls above the water gap at the bottom 2 of the ladle under the action of flowing molten steel, so that molten steel flows into the water gap at the bottom 2 of the ladle from among a plurality of supporting pieces 103 of the vortex inhibitor 1, the swirling height is reduced, the vortex formation is inhibited, and the residual injection in the ladle can be effectively reduced; at this time, the upper and lower sliding plates 401 and 402 are moved so that the molten steel stops flowing into the long nozzle 8 (i.e., the upper and lower sliding plates 401 and 402 are staggered with each other so that the upper and lower sliding plates 401 and 402 block the diverter outlet 302);
step H, arranging a separator inlet below the lower end of the long water gap 8, moving an upper sliding plate 401 and a lower sliding plate 402 to enable all casting residues consisting of molten steel and steel slag to flow out of the drainage part 6 into the long water gap 8, and then flowing into a separator 1001 from the lower end of the long water gap 8;
step I, a heat preservation cover 1003 is covered on an inlet of the separator, and an induction coil 1002 is electrified to heat molten steel in the separator 1001; specifically, the temperature value of the surplus in the separator 1001 is obtained according to the temperature measuring piece 1010 (i.e. thermocouple) placed in the separator 1001, and the output power of the induction coil 1002 at the outer side of the separator 1001 is determined according to the temperature value, so that the surplus is quantitatively heated, the molten steel in the surplus is positioned above the liquidus line, and the fluidity of the molten steel is maintained;
step J, under the action of gravity, molten steel flows from an outlet of the separator to the diversion gate 7, then flows into a pouring riser 1009 along the diversion gate 7 and further flows into a casting mould 1008;
step K, when the weighing piece 1011 detects that the molten steel injected into the casting mould 1008 reaches the specified weight, a new casting mould 1008 is replaced and molten steel is continuously injected (the inner cavity structure of the replaced casting mould 1008 is not limited, so that steel structures with various structures and no special requirements on inclusions, such as a well cover and the like, can be directly produced); when the steel liquid in the separator 1001 is completely flowed, the door bolt 1006 is moved to enable the upper end of the slag discharging door 1005 to rotate around the door shaft 1004, the steel slag attached to the slag discharging door 1005 is separated, the slag discharging door 1005 is fixed on the door bolt 1006, the heat preservation cover 1003 is taken away from the inlet of the separator, and the interior of the separator 1001 is ready to flow into a new ladle for pouring and surplus.
In this embodiment, the separator 1001 is used for receiving a mixture of molten steel and steel slag in a ladle at the end of pouring, the heat insulation cover 1003 is used for reducing heat radiation of the mixture in the separator 1001, and the induction coil 1002 is used for heating the mixture in the separator 1001 to ensure fluidity of the molten steel; molten steel enters the casting mould 1008 through the water diversion nozzle 1007, and different steel structural members are formed according to the inner cavity structure of the casting mould 1008; the steel slag is discharged out of the separator 1001 through a slag discharge door 1005; the weighing piece 1011 monitors the casting process of the casting mould through weight change; the temperature in separator 1001 is detected by temperature sensing element 1010 and the power of induction coil 1002 is controlled accordingly.
In the embodiment, the gravity is utilized to separate the steel slag and the molten steel in the casting under the thermal state condition, the separation cost is low, meanwhile, the physical sensible heat of the steel slag and the molten steel is reserved, the steel slag and the molten steel can be subjected to the next treatment under the thermal state condition, the heat is fully utilized, the waste of the heat is avoided, and the economic benefit is improved.
In this embodiment, the molten steel in the surplus molten steel is directly formed into a final product, so that the molten steel which is smelted is prevented from being smelted again only as scrap steel, the existing heat and high-quality molten steel resources are fully utilized, the waste resources are converted into useful products, the maximization of resource utilization is realized, if the molten steel in the surplus molten steel is treated according to the existing technology, the value=weight×the price of the scrap steel, if the molten steel is treated according to the technology of the patent, the value=quantity×the price of structural members, and the economic benefit is greatly improved.
In this embodiment, the nozzle plug 5 includes a first side 501 and a second side 502, where the first side 501 is attached to the inner wall of the drainage channel, the second side 502 is an inclined plane inclined from its top end to its bottom end, the top end of the second side 502 is attached to the inner wall of the drainage channel, and the interval between the second side 502 and the inner wall of the drainage channel is gradually widened from top to bottom, so that after the nozzle plug 5 is slightly jacked up, molten steel can smoothly flow down along the gap between the second side 502 and the inner wall of the drainage channel, thereby ensuring the drainage effect of the device.
In this embodiment, the bottom of the second side 502 is provided with the chamfer 503, and the top of the other end of the drainage portion 6 is provided with the jack-up inclined plane 603 parallel to the chamfer 503, so that the chamfer 503 and the jack-up inclined plane 603 are in contact with each other, the earliest contact between the drainage portion 6 and the nozzle plug 5 is in surface-to-surface contact, the contact area is increased, and the smooth, nondestructive and smooth jack-up of the nozzle plug 5 by the drainage portion 6 is facilitated.
In this embodiment, the periphery of the vortex suppression disc 101 is connected with a plurality of supporting members 103 extending upwards, so that when the nozzle plug 5 is separated from the connector member 102 at the lower end of the vortex suppression disc 101, the gravity center of the whole vortex suppression device 1 is distributed on one side connected with the supporting members 103, so that at the end of pouring, under the action of flowing molten steel, the supporting members 103 on the vortex suppression disc 101 automatically fall above the ladle bottom 2 nozzle, so that molten steel cannot directly pass through the vortex suppression disc 101 from above the vortex suppression disc 101 to reach the ladle bottom 2 nozzle, but flows into the ladle bottom 2 nozzle from among the plurality of supporting members 103 of the vortex suppression device 1, the effect of reducing the vortex formation is realized, and the pouring residue in the ladle can be effectively reduced.
In this embodiment, the lower end of the swirl inhibiting disc 101 is connected with a connector 102 with a T-shaped structure, the connector 102 is disposed inside the nozzle plug 5, and the T-shaped structure of the connector 102 enables the connector 102 to be firmly connected inside the nozzle plug 5; the vortex inhibitor 1 is made of high-temperature refractory materials, and the density of the vortex inhibitor 1 is smaller than that of molten steel and larger than that of steel slag, so that the vortex inhibitor 1 can be freely suspended in the molten steel below the steel slag surface; a temperature measuring device 9 is arranged on the outer side wall of the flow diverter 3, the temperature measuring device 9 can monitor the change of the internal temperature of the flow diverter 3 in real time, and once the flow of molten steel in the flow diverter 3 is detected, the upper sliding plate 401 and the lower sliding plate 402 can be opened to timely discharge the molten steel; the nozzle plug 5 is pig iron which can be melted by the drained molten steel, and the melting point of the nozzle plug 5 is lower than 1350 ℃ compared with that of the drained molten steel, so that the nozzle plug 5 can be melted and disappeared when the molten steel passes through a drainage channel, thereby enabling the cyclone suppressor 1 to float upwards and preparing for the cyclone suppressing process at the end of pouring.
In this embodiment, the drainage portion 6 is provided with a through hole 601 from top to bottom, the periphery of the through hole 601 is wrapped with a wrapping layer 602, the outer surface of the wrapping layer 602 is bonded with a metal material, after the drainage portion 6 is pushed to a limited position and the nozzle plug 5 is lifted up, the design of the through hole 601 enables molten steel flowing in from the inlet 301 of the drainage device to smoothly flow through the drainage portion 6 to reach the outlet 302 of the drainage device, and the periphery of the through hole 601 is wrapped with a refractory material, so that the drainage portion 6 is not melted by molten steel when the molten steel flows through the drainage portion 6, thereby maintaining the lifted state of the nozzle plug 5 and ensuring the molten steel to smoothly flow; the outer surface of the wrapping layer 602 is attached to a metal material, so that the structure of the wrapping layer 602 is not damaged by impact in the process of contacting the nozzle plug 5 and jacking the nozzle plug 5, and long-term use of the drainage portion 6 is ensured.
The drainage mechanism in the embodiment does not generate secondary pollution caused by the traditional drainage sand casting in the ladle casting process, thereby ensuring the purity of molten steel, improving the product quality and improving the economic benefit; and the vortex formation above the water gap at the bottom 2 of the ladle can be restrained at the end stage of ladle pouring, the slag height of molten steel is reduced, the ladle pouring residue is reduced, and the economic benefit is improved.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The waste casting direct forming device is characterized by comprising a drainage mechanism and a forming mechanism; the drainage mechanism is used for providing pouring surplus molten steel, and it includes:
the drainage device comprises a drainage device (3), wherein a drainage device inlet (301) is formed in the upper end of the drainage device (3), a drainage device outlet (302) is formed in the lower end of the drainage device (3), and a drainage channel is formed in the drainage device (3) from the drainage device inlet (301) to the drainage device outlet (302); two sides of the internal drainage channel of the drainage device (3) are respectively provided with a first accommodating cavity (303) and a second accommodating cavity (304);
the vortex inhibitor (1), the vortex inhibitor (1) comprises a vortex inhibition disc (101), the lower end of the vortex inhibition disc (101) is connected with a water gap plug (5), and the water gap plug (5) can be inserted into the drainage channel from a drainage device inlet (301); the periphery of the swirling disc (101) is connected with a plurality of supporting pieces (103) extending upwards;
the drainage part (6) is arranged in the first accommodating cavity (303), one end of the drainage part (6) is connected with the push rod (7), and the other end of the drainage part (6) is opposite to the second accommodating cavity (304);
the molding mechanism includes:
the separator (1001) is arranged in a hollow manner, the bottom of the separator (1001) is provided with a slag discharging door (1005) which is obliquely arranged, the upper end of the slag discharging door (1005) is rotationally connected with a door shaft (1004) arranged on the side surface of the separator (1001), and the lower end of the slag discharging door (1005) is matched and connected with a door bolt (1006); the upper end of the separator (1001) is a separator inlet, and a separator outlet is arranged between the lower end of the slag discharging door (1005) and the inner side wall of the separator (1001); an induction coil (1002) is arranged around the separator (1001);
and a casting mold (1008), wherein a molten steel inlet is arranged at the upper part of the casting mold (1008), and the molten steel inlet is positioned below the separator outlet.
2. The direct molding apparatus for waste gate according to claim 1, wherein: and a pouring riser (1009) is arranged on the molten steel inlet, and the outlet of the separator is communicated with the pouring riser (1009) through a water guiding nozzle (1007).
3. The direct molding apparatus for waste gate according to claim 2, wherein: a temperature measuring piece (1010) is arranged in the separator (1001).
4. A waste gate direct forming apparatus according to any one of claims 1 to 3, wherein: the casting mold (1008) is arranged on the weighing piece (1011).
5. A waste gate direct forming apparatus according to any one of claims 1 to 3, wherein: the separator inlet is detachably covered with a heat preservation cover (1003).
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| CN201810529611.3A CN108480610B (en) | 2018-05-29 | 2018-05-29 | Direct forming device for waste casting |
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| CN201810529611.3A CN108480610B (en) | 2018-05-29 | 2018-05-29 | Direct forming device for waste casting |
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