CN111705220A - Electric slag remelting equipment for ultra-long steel ingot - Google Patents
Electric slag remelting equipment for ultra-long steel ingot Download PDFInfo
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- CN111705220A CN111705220A CN202010575310.1A CN202010575310A CN111705220A CN 111705220 A CN111705220 A CN 111705220A CN 202010575310 A CN202010575310 A CN 202010575310A CN 111705220 A CN111705220 A CN 111705220A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
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Abstract
The invention relates to electroslag remelting equipment for an ultralong steel ingot, which comprises a rack, a crystallizer, a clamp for clamping a dummy electrode and a bottom water tank positioned below the crystallizer, wherein the dummy electrode, the bottom water tank and the crystallizer are respectively connected with the rack in a sliding manner along the vertical direction. The invention has the effect of processing the ultra-long steel ingot.
Description
Technical Field
The invention relates to the field of high-performance steel processing, in particular to an electric slag remelting device for an ultralong steel ingot.
Background
Electroslag remelting steel is a method of melting using resistance heat generated when electric current passes through slag as a heat source. The purpose is to improve the purity of metal and improve ingot casting crystallization.
In the prior art, chinese patent document with the publication number of CN201296773Y discloses a novel crystallizer conductive continuous casting electroslag remelting furnace, which comprises a stripping system, a crystallizer system, an electrode lifting system and a power supply system, wherein the stripping system comprises a stripping column, a stripping platform and a bottom water tank; the crystallizer system comprises a crystallizer platform and a crystallizer; the electrode lifting system adopts two independent cross arm upright posts and a cross arm; the power supply system comprises a transformer, a short network, a cross arm cable, a crystallizer cable and a bottom water tank cable, wherein one end of the cross arm cable is connected to the electrode holder through the short network, the other end of the cross arm cable is connected to the transformer through the short network, one ends of the crystallizer cable and the bottom water tank cable are respectively connected to the crystallizer and the bottom water tank, and the other ends of the crystallizer cable and the bottom water tank cable are connected to the transformer through the short network. In the solution described in this patent document, the vertical movement of the bottom water tank is achieved by the vertical movement of the ingot pulling platform, so that the steel ingot can be smoothly formed and taken out.
The above prior art solutions have the following drawbacks: in the use process of the existing electroslag remelting device, because the ingot drawing platform vertically moves downwards in the steel ingot forming process, namely a pit needs to be dug in a working area, and the bottom water tank and the ingot drawing platform are arranged in the pit, the depth of the pit determines the maximum length of the steel ingot which can be processed by workers to a certain extent, and if the steel ingot which is relatively long needs to be processed, the electroslag remelting device is lack of strength.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the electroslag remelting equipment for the ultra-long steel ingot, which can add the long steel ingot exceeding the depth length of a pit.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an electric slag remelting device for overlength steel ingot, includes frame, crystallizer, is used for the anchor clamps of centre gripping false electrode and is located the bottom water tank of crystallizer below, false electrode, bottom water tank and crystallizer are connected with the frame along vertical direction sliding respectively.
By adopting the technical scheme, when the steel ingot forming machine is used, a steel ingot is firstly formed in the crystallizer, the bottom water tank can continuously move downwards along with the increase of the height of the steel ingot in the crystallizer and is influenced by the depth of a pit formed in a working area, when the bottom water tank moves to the lowest point, the bottom water tank does not continuously move downwards, the consumable electrode is not consumed completely, namely, the space is still needed to promote the steel ingot to be formed, and at the moment, the crystallizer can be driven to vertically move upwards to increase the distance between the crystallizer and the bottom water tank, so that the space for forming the steel ingot is increased, and the purpose of processing the steel ingot with the length exceeding the depth of the pit is realized; in addition, the arrangement can also facilitate workers to lift and take out the steel ingot by upwards sliding the crystallizer after the steel ingot is formed, and compared with the prior art, the steel ingot is more convenient to move horizontally from the deep pit to the vacant position and is lifted and taken out.
The present invention in a preferred example may be further configured to: the frame comprises a portal frame, a moving platform is connected to the portal frame in a sliding mode in the vertical direction, the crystallizer is fixedly arranged on the moving platform, and the moving platform and the clamp are connected with the frame in a sliding mode through a motor-screw rod transmission mode.
By adopting the technical scheme, the transmission mode of the motor and the screw rod is that the screw rod is driven to rotate by the motor, the mobile platform, the crystallizer and the bottom water tank are respectively in threaded connection with different screw rods, the mobile platform or the false electrode or the bottom water tank is driven to move along the length direction of the screw rod by the rotation of the screw rod, the structure is simple, the maintenance is convenient, the operation is stable, and meanwhile, compared with the transmission mode of the air cylinder, the influence of the temperature is smaller, and the device is more suitable for the working condition of the application.
The present invention in a preferred example may be further configured to: the bottom water tank comprises a base connected with the rack in a sliding mode in the vertical direction and a top cover located above the base, and a cavity communicated with the outside is reserved between the top cover and the base.
By adopting the technical scheme, when in use, cold water is not led into the bottom water tank firstly, molten electroslag in the crystallizer can exchange heat with the top cover to form a thin skull on the top cover, at the moment, the top cover can carry high temperature because of absorbing a large amount of heat, at the moment, cold water is sprayed into a cavity between the top cover and the base through the water inlet pipe, the cold water can be quickly vaporized after contacting the top cover carrying high temperature, and a large amount of pressure is generated in a short time, but compared with the prior art, because the cavity in the application is directly communicated with the outside, the instantaneous pressure generated by vaporization of the cooling water can not cause the bottom water tank to expand violently, but can be directly diffused to the outside, because the heat dissipation speed of the heat dissipation mode is slow, the skull formed in the early stage is thin, liquid steel balls can be quickly exchanged heat with the bottom water tank, the steel ingot forming speed is accelerated, and the heat dissipation speed under the normal state can be recovered when water cooling is, the time of the whole ingot forming process is not only not increased but also shortened as a whole.
The present invention in a preferred example may be further configured to: the top cap is the opening towards the disc structure of base setting, base top terminal surface and top cap bottom terminal surface parallel and level, and top cap bottom opening edge extends to base top terminal surface edge outside.
Through adopting above-mentioned technical scheme, can make the cavity that forms between top cap and the base have bigger volume for inlet tube spun cooling water can be more held inside the top cap, reach the quick refrigerated purpose to the steel ingot, the lateral wall that is equipped with open-ended disc structure simultaneously can make the more lasting of cooling water stop in the cavity region, make cooling water can be better with the steel ingot heat transfer, accelerate liquid steel ball to solid-state conversion.
The present invention in a preferred example may be further configured to: a plurality of water outlets which are uniformly distributed are formed in the end face of the top end of the base, and water in the water inlet pipe is uniformly sprayed into a cavity formed by the top cover and the end face of the top end of the base through the water outlets.
Through adopting above-mentioned technical scheme, the delivery port that sets up a plurality of even settings can make the even injection of cooling water that the inlet tube erupted on the top cap for every region on the top cap can both receive more even cooling effect, when making liquid steel ball fall in any one region on the skull of top cap top, can both be relatively quick carry out the heat transfer with end water tank, and then the quick solid-state steel ingot that changes into.
The present invention in a preferred example may be further configured to: and an air suction assembly which generates negative pressure at an opening at the top end of the crystallizer is arranged on one side of the crystallizer.
By adopting the technical scheme, the consumable electrode can be desulfurized in the electroslag remelting process, so harmful gas with sulfur can be generated, the harmful gas can be collected in a concentrated manner through the air suction assembly, and the possibility that the harmful gas is diffused in a working area to influence the health of workers is reduced.
The present invention in a preferred example may be further configured to: the collector articulates on moving platform, and the collector is including being used for covering the main part of establishing in the crystallizer top, seting up the through-hole that is used for holding the electrode in the main part and being located the wind gap that through-hole one side was used for connecting the tuber pipe, is equipped with on the moving platform to be used for restricting the collector and rotates the locating part when rotating to the crystallizer top.
Through adopting above-mentioned technical scheme, set the collector to can rotate to the form that the lid was established on the crystallizer, can make the staff rotate the collector when needs use the collector to make the collector reach the state of lid establishing on the crystallizer through the locating part, make the harmful gas of drift department directly float into in the crystallizer and concentrated the collection by the collector, can expose the crystallizer completely when need not use the collector simultaneously, the staff of being convenient for overhauls the crystallizer.
The present invention in a preferred example may be further configured to: when the collector rotates to be positioned above the crystallizer, the outline of the main body is in a horn shape with an opening facing the crystallizer.
Through adopting above-mentioned technical scheme, make the collector be the horn shape setting, when the collector rotates to the crystallizer top promptly for the bottom opening of collector outwards diffuses, can make the harmful gas that drifts away in the crystallizer under the effect of the collector bottom port of horn mouth shape, more smooth and easy is collected in collector inner space and is collected.
In summary, the invention includes at least one of the following beneficial technical effects:
1. when in use, cold water is not led into the bottom water tank firstly, the molten electroslag in the crystallizer can exchange heat with the top cover to form a thin slag shell on the top cover, at the moment, the top cover can carry high temperature because of absorbing a large amount of heat, at the moment, the cold water is sprayed into the cavity between the top cover and the base through the water inlet pipe, the cold water can be quickly vaporized after contacting the top cover carrying high temperature, and a large amount of pressure is generated in a short time, but compared with the prior art, because the cavity in the application is directly communicated with the outside, the instant pressure generated by vaporization of the cooling water can not cause the bottom water tank to expand violently, but can be directly emitted to the outside, because the heat dissipation speed of the heat dissipation mode is slow, the slag shell formed in the early stage is thinner, the liquid steel balls can be quickly exchanged heat with the bottom water tank, the steel ingot forming speed is accelerated, and the heat dissipation speed under the normal state can be, therefore, the time of the whole steel ingot forming process is not increased but shortened on the whole; in addition, due to the arrangement, workers can conveniently lift and take out the steel ingot by sliding the crystallizer upwards after the steel ingot is formed, and compared with the conventional method that the steel ingot is moved to a vacant position from a deep pit and lifted and taken out, the method is more convenient;
2. the double-layered installed part and the current conducting plate that form the single-pole single-throw switch can be convenient for the staff to heels the furnace body, if adopt prior art directly to connect the water-cooling cable on the furnace body again, then the staff need consume a large amount of strength when heeling the furnace body, and the structure of this application is lighter more, and can reach the same effect of prior art kind.
Drawings
FIG. 1 is an isometric view of an embodiment;
FIG. 2 is a schematic view showing a structure of a jig in the embodiment;
FIG. 3 is a schematic view showing the structure of a suction assembly according to an embodiment;
fig. 4 is a schematic diagram illustrating a moving manner of the moving platform and the clamp in the embodiment.
In the figure, 1, a frame; 11. a gantry; 12. a curtain plate; 2. a clamp; 21. a limiting block; 22. a clamping block; 23. a clamping plate; 24. clamping the oil cylinder; 25. accommodating grooves; 26. mounting grooves; 3. an air suction assembly; 31. a collector; 311. a main body; 312. a through hole; 313. a tuyere; 32. an air duct; 33. a connecting plate; 4. a crystallizer; 5. a mobile platform; 51. a mounting frame; 52. connecting the platform; 53. a rib plate; 54. a limiting member; 55. a jacking piece; 6. a bottom water tank; 61. a top cover; 62. a cavity; 63. a base; 64. a nozzle; 65. a water inlet pipe; 7. a mobile vehicle; 71. a slide rail; 8. a motor; 81. and a screw rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the electroslag remelting apparatus for an ultra-long steel ingot disclosed by the present invention includes a frame 1 vertically standing on the ground, where the frame 1 in this embodiment includes a gantry 11. The utility model discloses an electroslag remelting device, including frame 1, be connected with the frame 1 along vertical direction slip and be used for the centre gripping false electrode anchor clamps 2, the frame 1 of anchor clamps 2 below is gone up along vertical direction slip and is connected with moving platform 5, and moving platform 5 is last fixedly connected with to be used for the crystallizer 4 of electroslag remelting, still is equipped with the subassembly 3 that induced drafts that is used for collecting the delay that the electroslag remelting in-process produced on the moving platform 5, and the subassembly 3 that induced drafts is located 4 top ports. A pit is formed right below the crystallizer 4, a sliding rail 71 horizontally arranged is placed at the bottom of the pit, part of the sliding rail 71 is located right below the crystallizer 4, the sliding rail 71 is connected with a trolley 7 in a sliding mode along the length direction of the sliding rail 71, the sliding rail 71 is in an I-shaped steel shape, wheels of the trolley 7 are located in an area between the upper portion and the lower portion of the I-shaped steel-shaped sliding rail 71, namely the trolley 7 can move to the position right below the crystallizer 4, and the trolley 7 is placed in a cavity of the sliding rail 71 through the wheels to achieve stable limiting. Set firmly jacking piece 55 on the top surface of locomotive 7, jacking piece 55's top sets firmly bottom water tank 6, and bottom water tank 6 realizes being close to or keeping away from crystallizer 4 through jacking piece 55 for the electroslag remelting process can go on smoothly, and jacking piece 55 in this embodiment is including setting firmly the jacking cylinder on locomotive 7, and the cylinder body and the locomotive 7 fixed connection of jacking cylinder, and piston rod tip sets firmly on bottom water tank 6's bottom surface. In addition, in other embodiments, the jacking member 55 may also be a combination of "motor 8+ screw rod 81+ guide rod", that is, the motor 8 is fixedly connected to the moving vehicle 7, the screw rod 81 is coaxially and fixedly arranged on the output shaft of the motor 8, so that the screw rod 81 is in threaded connection with the bottom water tank 6, and the guide rod is inserted into the bottom water tank 6, so that the bottom end of the guide rod is fixedly arranged on the moving vehicle 7, thereby achieving the lifting of the bottom water tank 6. In addition, because crystallizer 4 is located moving platform 5, so the bottom of crystallizer 4 can slowly rise in moving platform 5 upward movement in-process, and there is the possibility of bleed-out in the bottom of crystallizer 4 at electroslag melting in-process, so this application has set firmly curtain 12 in moving platform 5's bottom surface, and curtain 12 is that polylith square plate arranges along vertical direction and through hinge two liang of connection form, can reduce the possibility that molten steel harms frame 1 or other parts when the bleed-out phenomenon takes place.
Referring to fig. 1 and 2, the clamping device 2 includes a limiting block 21 located between two vertical portions of the frame 1, a clamping block 22 fixedly disposed at one end of the limiting block 21, an accommodating groove 25 formed on an end surface of the clamping block 22, a clamping plate 23 located inside the accommodating groove 25, and a clamping cylinder 24 for driving the clamping plate 23 to move in a horizontal direction. Two opposite side walls of the limiting block 21 are respectively abutted against the side walls of two vertical parts of the rack 1, and the gantry 11 is used for limiting the vertical movement of the clamp 2. The holding tank 25 is located right above the mold 4 to provide an installation space for the dummy electrode. The holding plates 23 are provided with two opposite parts which are arranged inside the holding groove 25 and used for clamping the false electrode under the action of the holding oil cylinder 24, and naturally, the holding oil cylinder 24 is also provided with two holding plates 23 which are respectively fixedly connected with the two holding plates. The inside of grip block 22 is seted up and is used for holding the mounting groove 26 of centre gripping hydro-cylinder 24, and the cylinder body of centre gripping hydro-cylinder 24 sets firmly on the mounting groove 26 inner wall, piston rod and grip block 23 fixed connection. In this embodiment, the lift of anchor clamps 2 adopts the transmission mode realization of "motor 8+ lead screw 81", because the both sides wall of stopper 21 butt respectively on two lateral walls of frame 1, so only need set firmly motor 8 in frame 1 to with setting firmly in the output shaft of motor 8 of lead screw 81 coaxial line, make lead screw 81 and stopper 21 threaded connection at last can, because the lift of anchor clamps 2 can have multiple mode and be ripe prior art, so no longer give unnecessary details.
Referring to fig. 1 and 3, the suction assembly 3 includes a collector 31 positioned above the mold 4 and an air duct 32 connected to the collector 31. Collector 31 is including the main part 311 that is located the crystallizer 4 top, set up through-hole 312 on main part 311 and be used for connecting the wind gap 313 of tuber pipe 32, main part 311 is the loudspeaker form, great bottom port can be collected the flue gas of wider within range during the use, through-hole 312 is used for holding false electrode and makes false electrode or consumable electrode can smoothly stretch into inside the crystallizer 4, wind gap 313 has two and is located the main part 311 lateral wall of through-hole 312 both sides respectively, combine main part 311 to be the loudspeaker form, can let the flue gas that collects along the inside wall of main part 311 to wind gap 313 department gathering, the quality and the efficiency of discharging fume have been improved.
The mobile platform 5 comprises a connecting platform 52 located between two vertical parts of the frame 1 and an installation frame 51 fixedly arranged at one end of the connecting platform 52, two side walls of the connecting platform 52 are the same as two side walls of the limiting block 21 and are respectively abutted against the side walls of the two vertical parts of the frame 1, and the vertical movement of the mobile platform 5 is realized through the frame 1, and the wire and the limitation are realized. The mounting frame 51 comprises a vertical plate fixedly connected to the connecting platform 52 and a horizontal plate fixedly connected to the vertical plate, the vertical plate and the horizontal plate communicate with each other to form a space for accommodating the mold 4, and a plurality of reinforcing ribs 53 are fixedly connected to the space for improving the structural strength of the mounting frame 51. The connecting plate 33 is fixedly arranged on one side wall of the main body 311, one end of the connecting plate 33 is fixedly arranged on the side wall of the main body 311 without the air opening 313, the other end of the connecting plate 33 is hinged to the mounting frame 51, and the mounting frame 51 is hinged to the position fixedly connected with limiting part 54 of the connecting plate 33 and used for abutting against the connecting plate 33 when the connecting plate 33 rotates to the horizontal position, so that the main body 311 is kept in a state that the bottom end port is opposite to the crystallizer 4, and the air suction assembly 3 can smoothly collect flue gas. The limiting member 54 in this embodiment includes an abutting block fixedly disposed on the sidewall of the mounting frame 51. In addition, since the main body 311 needs to be rotated, the air duct 32 in the present embodiment includes a bellows. In this embodiment, the lift of moving platform 5 adopts the transmission mode of "motor 8+ lead screw 81" to realize, because the both sides wall of linking platform 52 butt respectively on two lateral walls of frame 1, so only need set firmly motor 8 on frame 1 to set firmly on the output shaft of motor 8 with the lead screw 81 coaxial line, make lead screw 81 and moving platform 5 threaded connection at last can, because the lift of anchor clamps 2 can have multiple mode and be ripe prior art, the event is no longer repeated.
Referring to fig. 4, the bottom water tank 6 includes a base 63, a top cover 61 located above the top end surface of the base 63, and a cavity 62 formed between the top cover 61 and the base 63, the top end surface of the base 63 vertically protrudes upward to form a supporting structure with an outer diameter smaller than that of the top end surface of the base 63, and the top cover 61 is fixedly arranged on the supporting structure. In this embodiment, since all parts of the bottom water tank 6 are fixedly connected, the bottom water tank 6 can be fixed by welding or bolting, and any position of the bottom water tank 6 except the top cover 61 can be fixedly connected. The top cover 61 in this embodiment is in a circular box shape with an opening facing the base 63, and the cavity 62 includes a space formed inside the top cover 61. The vertical projection of the inner wall edge of the round box-shaped top cover 61 is positioned outside the end face edge at the top end of the base 63. Fixedly connected with is used for letting in the inlet tube 65 of cooling water on the base 63, the one end and the base 63 fixed connection of inlet tube 65, and a plurality of spray tubes 64 of the inside fixedly connected with of base 63, these spray tubes 64 are fixed connection simultaneously and are connected with the tip of base 63 at inlet tube 65, and the other end stretch out inside base 63 top end face gets into cavity 62, these spray tubes 64 are located the inside tip evenly distributed of cavity 62 and all blow towards top cap 61 inner wall for cool off top cap 61 steel ingot promptly. Of course, in other embodiments, the top cover 61 may have other shapes, such as a flat plate structure fixed above the base 63; meanwhile, a groove for guiding water flow can be formed in the inner side wall of the top cover 61 of the box, water flow is driven to be blown inwards from one side of the top cover 61, more water flow can be in contact with the inner wall of the top cover 61 for a longer time, and the cooling effect is improved.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides an overlength is electroslag equipment of remelting for steel ingot, includes frame (1), crystallizer (4), is used for anchor clamps (2) of centre gripping false electrode and is located bottom water tank (6) of crystallizer (4) below, its characterized in that: the clamp (2), the bottom water tank (6) and the crystallizer (4) are respectively connected with the frame (1) in a sliding manner along the vertical direction.
2. The electroslag remelting apparatus for an ultralong steel ingot according to claim 1, wherein: the frame (1) comprises a portal frame (11), a moving platform (5) is connected to the portal frame (11) in a sliding mode along the vertical direction, the crystallizer (4) is fixedly arranged on the moving platform (5), and the clamp (2) and the moving platform (5) are connected with the frame (1) in a sliding mode through a transmission mode of a motor (8) -a screw rod (81).
3. The electroslag remelting apparatus for an ultralong steel ingot according to claim 1, wherein: the bottom water tank (6) comprises a base (63) connected with the frame (1) in a sliding mode along the vertical direction and a top cover (61) located above the base (63), and a cavity (62) communicated with the outside is reserved between the top cover (61) and the base (63).
4. The electroslag remelting apparatus for an ultralong steel ingot according to claim 1, wherein: top cap (61) are the disc structure that the opening set up towards base (63), base (63) top terminal surface and top cap (61) bottom terminal surface parallel and level, and top cap (61) bottom opening edge extends to base (63) top terminal surface edge outside.
5. The electroslag remelting apparatus for an ultralong steel ingot according to claim 4, wherein: a plurality of water outlets which are uniformly distributed are formed in the end face of the top end of the base (63), and water in the water inlet pipe (65) is uniformly sprayed into a cavity (62) formed by the top cover (61) and the end face of the top end of the base (63) through the water outlets.
6. The electroslag remelting apparatus for an ultralong steel ingot according to claim 5, wherein: and an air suction assembly (3) generating negative pressure at an opening at the top end of the crystallizer (4) is arranged at one side of the crystallizer.
7. The electroslag remelting apparatus for an ultralong steel ingot according to claim 1, wherein: the air suction assembly (3) comprises an air pipe (32) and a collector (31) positioned at an opening at the top end of the crystallizer (4).
8. The electroslag remelting apparatus for an ultralong steel ingot according to claim 7, wherein: the collector (31) is hinged to the movable platform (5), the collector (31) comprises a main body (311) used for covering the upper part of the crystallizer (4), a through hole (312) formed in the main body (311) and used for accommodating an electrode, and an air opening (313) located on one side of the through hole (312) and used for being connected with an air pipe (32), and a limiting part (54) used for limiting the collector (31) to rotate to the upper part of the crystallizer (4) is arranged on the movable platform (5).
9. The electroslag remelting apparatus for an ultralong steel ingot according to claim 8, wherein: when the collector (31) rotates to be positioned above the crystallizer (4), the outline of the main body (311) is in a horn shape with an opening arranged towards the crystallizer (4).
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| CN202010575310.1A CN111705220B (en) | 2020-06-22 | 2020-06-22 | Electric slag remelting equipment for ultra-long steel ingot |
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| CN202010575310.1A CN111705220B (en) | 2020-06-22 | 2020-06-22 | Electric slag remelting equipment for ultra-long steel ingot |
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