CN101003859A - Plate blank electroslag furnace - Google Patents
Plate blank electroslag furnace Download PDFInfo
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- CN101003859A CN101003859A CN 200710010096 CN200710010096A CN101003859A CN 101003859 A CN101003859 A CN 101003859A CN 200710010096 CN200710010096 CN 200710010096 CN 200710010096 A CN200710010096 A CN 200710010096A CN 101003859 A CN101003859 A CN 101003859A
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Abstract
This invention discloses a slab electroslag furnace, which comprises: an AC power supply, an electrode elevator, an electrode, a crystallizer, a support platform, an ingot feeder, a liquid level detector of molten steel, a rotary frame, a weight sensor, an ingot discharger, and a control system. The crystallizer is fixed in the support platform. The rotary frame is fixed on the support platform, and can move along a fixed track. The electrode elevator is set on the platform of the rotary frame, and can be horizontally adjusted. The weight sensor is set at the contact surface of the electrode elevator and the platform of the rotary frame. One end of the electrode (monopolar or bipolar) is fixed with the electrode elevator, and the other one is set in the crystallizer. The liquid level detector of molten steel is set on the sidewall of the crystallizer. The ingot discharger is set on a frame below the support platform. A wagon is fixed on the ingot discharger. The ingot feeder is fixed in the wagon. The control system, elevator, weight sensor, ingot discharger and wagon are electrically connected.
Description
Technical field
The invention belongs to metal esr equipment technical field, particularly a kind of slab electroslag furnace is applied in the metal refusion and smelting process.
Background technology
Electroslag furnace is the resistance heat that produces when utilizing electric current by slag carries out melting to metal as thermal source a kind of metallurgical equipment.Can reduce the content of gas and inclusion in the steel behind the esr, and obtain composition evenly, the steel ingot of dense structure, good quality.The plasticity of alloy and toughness, particularly lateral performance is improved, and has reduced anisotropy, eliminates or has alleviated various macroscopic views and microscopic defect.Therefore, electroslag furnace equipment at home and abroad industry such as iron and steel, machinery obtained widely using.
Present domestic electroslag furnace with regard to the slab electroslag furnace, still belongs to blank mainly to produce billet.Along with the progress of science and technology and the development of society, more and more urgent to the requirement of exploitation slab electroslag furnace and heavy slab electroslag furnace, mainly contain the following aspects:
1. steels for pressure vessel use: because the overwhelming majority of manufacturing enterprise of China's steels for pressure vessel use can only produce low middle-grade pressure vessel plate and boiler plate, market is also very in short supply at home to cause some high technology contents, high-quality low-temperature steel, the anti-hydrogen steel of middle temperature, normalized high-strength steel, the description that some can't be produced still relies on import.
2. nuclear power steel: prediction shows that in the following more than ten years, the nuclear power generation capacity of China will increase by 6 times, and the nuclear energy power generation ratio will expand 4% to from present 1.6%, promptly reach 3200～4,000 ten thousand kW.Domesticly will build about 31 of million kilowatt nuclear power station successively.The exemplary requirement of used in nuclear power station steel sees Table 1.
The exemplary requirement of table 1 used in nuclear power station steel
| The trade mark | Specification mm | Weight t |
| SA738GrB | 100×4000×10000 | 31.4 |
| 100×3000×10000 | 23.55 | |
| 100×4000×10500 | 32.97 |
3. the big substance high-quality of other big thickness quality plate: for large-scale hydroelectric facility with thickness 350mm and require the steel plate of SEL072-I level, thickness 300mm and require the steel plate of Z3 level Z to performance, substance is greater than other big substance steel plate of 25t, and thickness is greater than the special Low Alloy Steel Plate that requires the flaw detection of GB I level of 120mm etc.
Existing electroslag furnace can not satisfy above-mentionedly uses the steel demand, and the steel ingot purity of existing device fabrication is low, and compression ratio is less than normal, is prone to the inner flaw detection of steel plate defective and does not conform to; Ubiquity rolling pressure temperature control on the low side, controlled rolling is simply constructed, and the Equipment for Heating Processing imperfection causes armor plate strength rank deficiency; The specification substance can not satisfy.。
Summary of the invention
In order to solve the above problems, purpose of the present invention mainly is to provide a kind of slab electroslag furnace, and it is to adopt electro-slag re-melting method, can produce the heavy slab that thickness range is 60mm～1500mm, and the heavy scope of single ingot is 0.2～200 ton.
The present invention includes communication power supply, electrode lifting mechanism, rotating frame, electrode, LOAD CELLS, crystallizer, support platform, stripping mechanism, molten steel liquid level detection device, dummy ingot device and Controlling System, crystallizer is fixed in the support platform, on support platform, be provided with track, rotating frame is fixed on the support platform, can rotate along the trapped orbit on the support platform, horizontal adjusting mechanism is installed on rotating frame, electrode lifting mechanism places on the interior framework platform of rotating frame, between the contact surface of electrode lifting mechanism and framework platform, be placed with LOAD CELLS, electrode one end is fixed on the electrode lifting mechanism of crystallizer top, the other end places crystallizer, molten steel liquid level detection device is installed on the crystallizer sidewall, stripping mechanism is installed on the support below the support platform, in stripping mechanism, be fixed with the ingot chassis, on the ingot chassis, be fixed with the dummy ingot device, Controlling System and electrode lifting mechanism, LOAD CELLS, stripping mechanism, the ingot chassis is electrically connected, electrode is an one pole or bipolar, during two electrodes, the series connection of two electrodes, power supply is connected with two electrodes; Power supply one end is connected with electrode during single electrode, and the other end is connected with the dummy ingot device with crystallizer respectively, forms the duplicate supply loop.
Power supply divides two kinds of AC and DCs, can be selected according to concrete processing requirement; Power supply mode can be according to the selected bipolar series of concrete processing condition or single electrode, crystallizer electrically conducting manner, when adopting the bipolar series power supply mode, the series connection of two electrodes, power supply is connected with two electrodes respectively, and power supply, electrode, molten slag, electrode constitute current supply circuit; When adopting single electrode, crystallizer conduction, power supply one end is connected with electrode, the other end is connected with the dummy ingot device with current-conductive mold respectively, be the duplicate supply loop this moment, article one, be power supply, electrode, molten slag, crystallizer formation current supply circuit, whether another loop is made of power supply, electrode, molten slag, steel ingot, dummy ingot device, can select two loops to work simultaneously according to processing requirement.
Rotating frame among the present invention comprises framework platform, 3 pillars and 4 root posts, prop framework platform by 3 pillars, on framework platform, be fixed with the framework that constitutes by four root posts and tip platform, 3 pillars of rotating frame contact with support platform, wherein one is fixed on the support platform, and can rotate, rotation angle range is 0～270 °, other two column bottoms are equipped with roller I and drive-motor I thereof, the orbiting of being set on support platform by motor I driving rolls I is so that realize the replacing of electrode.Electrode lifting mechanism adopts the type of drive of electric motor driving leading screw, electrode lifting mechanism comprises motor II, the hoisting appliance platform, leading screw I, sliding shoe, roller II, telescopic conductive pole, hoisting appliance pillar and base, hoisting appliance pillar upper end is the hoisting appliance platform, the lower end is a base, base places on the framework platform, the hoisting appliance pillar is provided with track, sliding shoe is installed in hoisting appliance by the roller II on it and props up intercolumniation, sliding shoe drives roller II can be along the orbiting on the hoisting appliance pillar, motor II is installed on the hoisting appliance platform, be connected with leading screw I on it, leading screw I is connected with sliding shoe, sliding shoe is connected with telescopic conductive pole, and telescopic conductive pole end is fixed with electrode; Realize that by motor II driving leading screw I drive sliding shoe and telescopic conductive pole electrode moves up and down.On the framework platform of rotating frame, horizontal adjusting mechanism is installed, be used for electrode lifting mechanism at horizontal X, Y directional trim, this adjustment mechanism is equipped with motor, electric pushrod respectively on X, Y direction, motor is connected with electric pushrod, electric pushrod is connected with base, drive base by the electric motor driving electric pushrod, to realize the adjustment of electrode position on horizontal X, Y direction, setting range is ± 80mm.Stripping mechanism adopts the type of drive of electric motor driving leading screw, comprise crossbeam, leading screw II, motor I V and stripping mechanism column, stripping mechanism column is fixed on the crystallizer both sides in the support platform, crossbeam is installed on the stripping mechanism column, can move up and down along stripping mechanism column, leading screw II and stripping mechanism column are installed in parallel in stripping mechanism stud sides face, and leading screw is connected with crossbeam with motor respectively, drive crossbeam by the electric motor driving leading screw and move up and down.Electrode is in the fusing of the top of crystallizer inside during work, and molten steel solidifies in its underpart again simultaneously, and out crystallizer is extracted steel ingot according to the given speed of Controlling System by stripping mechanism.
According to arts demand, crystallizer can adopt T shape or bucket formula crystallizer.When adopting T shape crystallizer, be equipped with molten steel liquid level detection device at the small cross-section place of crystallizer, its position is 0～200mm apart from the distance h scope of junction, upper and lower cross section, and the radioactive source of molten steel liquid level detection device is an isotropic substance; When adopting bucket formula crystallizer, apart from crystallizer upper end 200～500mm; Molten steel liquid level detection device is connected with Controlling System.
The present invention also can be according to the steel grade needs, between the outlet of crystallizer and dummy ingot device on-line insulating device are set, and attemperator is for splitting ([]) formula or being roller shutter type, attemperator opening and closing as required; For removing flue gas and the dust that reflow process produces, above crystallizer, be equipped with cleaning apparatus, adopt the range hood structure.
Before the remelting, can select T shape crystallizer, T shape current-conductive mold, bucket formula crystallizer or bucket formula current-conductive mold for use according to the concrete size of electrode, remelting slab.When the electrode cross dimensions is bigger, and remelting slab cross dimensions hour, adopts bipolar series, T shape crystallizer, also can adopt single electrode, T shape current-conductive mold; When electrode cross dimensions during less than remelting slab cross dimensions, can select bipolar series, bucket formula crystallizer for use, also can adopt single electrode, bucket formula current-conductive mold.
The control process of Controlling System of the present invention may further comprise the steps:
(1) beginning;
(2) Controlling System energising;
(3) input processing parameter: comprise and set lower current limit I
1, set upper current limit I
2, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L;
(4) communication power supply energising;
(5) melting begins;
(6) testing process parameter, Accident of Transformer warning amount, leaving water temperature(LWT), pressure and flow detect burn-off rate, detect liquid steel level, detect stripping speed, current control;
(7), judge whether to need to increase or reduce electric current according to the burn-off rate that detects;
(8) judge that actual liquid level and the absolute value of setting the liquid level difference are whether more than or equal to the scope of level allowance fluctuation, that is: | Δ H| 〉=H
0Whether set up, when | Δ H| 〉=H
0When being false, the liquid steel level that system turned back to for the 6th step detects step; Wherein Δ H is for setting the difference of liquid level and actual liquid level;
(9) as | Δ H| 〉=H
0The time, system carries out the stripping speed by PID and regulates;
(10) when steel ingot reaches setting weight L, then system finishing work.
The current control process is in described the 6th step: system carries out rise fall of electrodes PID and regulates; The actual current I of detecting electrode and setting upper current limit I
1, lower limit I
2Relation, promptly judge I
1≤ I≤I
2Whether set up, work as I
1≤ I≤I
2When being false, system turns back to electrode lifting mechanism PID regulating step.
The process of testing process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow is in described the 6th step: at first system detects process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow; Whether system prompt reports to the police, if system breaks down, then system passes through sound and light alarm; If system does not report to the police, then whether system prompt stops to smelt; If do not stop to smelt, then turn back to process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow detection step; If stop to smelt, then cut off communication power supply, system works finishes.
Working process of the present invention: beginning, Controlling System energising, input processing parameter: set lower current limit I
1, set upper current limit I
2, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L; Power supply energising, esr begins: add liquid slag in crystallizer, the end of electrode is inserted wherein, when electrode forms current supply circuit with slag and power supply, will have electric current to export and pass through slag from power supply.Because slag has certain resistance, has occupied most of pressure drop, thereby in slag bath, form a large amount of heats, with the metal electrode fusing of inserting wherein.The molten metal drop drips from electrode tip, passes slag and converges in the metal pool, solidifies the formation steel ingot gradually under the pressure cooling of crystallizer, and steel ingot is pulled out crystallizer continuously by stripping mechanism simultaneously.In whole process, the electrode LOAD CELLS is imported detected molten speed into Controlling System, Controlling System is according to the stripping speed of molten quick decision phasing coupling, molten steel liquid level detection device is imported the detection signal of liquid steel level height into Controlling System, Controlling System is revised stripping speed in view of the above, so that the liquid level of metal pool is controlled in the setting range all the time.Replenish slag charge in the production process as required, to realize safety and stability production.In process of production, Controlling System detects simultaneously to process parameter detection, Accident of Transformer warning amount, Inlet and outlet water temperature, pressure and flow, and when breaking down, system reports to the police automatically.
No matter power supply mode of the present invention is to adopt bipolar series mode or crystallizer conduction form, all reduce loop induction reactance, improved the plant capacity factor, changed heat distribution in the crystallizer again, making steel---the slag interface is away from the consumable electrode termination, deposite metal drop temperature is dripped near liquidus temperature and is converged in the metal pool, significantly reduce the relation of the metal pool degree of depth and power input, can increase substantially burn-off rate.Utilize esr, but the big substance steel ingot of production high-quality satisfies the demand of important industries such as nuclear power engineering, military project, promotes the realization of Important Project production domesticization.
Description of drawings
Fig. 1 is that the present invention adopts bipolar series, T shape structure of mould synoptic diagram
Fig. 2 is Fig. 1 left view,
Fig. 3 is the structural representation that the present invention adopts one pole, T shape current-conductive mold,
Fig. 4 is the left view of Fig. 3,
Fig. 5 is that the present invention adopts bipolar series, bucket formula structure of mould synoptic diagram,
Fig. 6 is the left view of Fig. 5,
Fig. 7 is the structural representation that the present invention adopts one pole, bucket formula current-conductive mold,
Fig. 8 is the left view of Fig. 7,
Fig. 9 is a rotating frame structural representation among the present invention,
Figure 10 is the left view of Fig. 9,
Figure 11 is the vertical view of Figure 10,
Figure 12 is a Controlling System programflow chart of the present invention;
1. electrode lifting mechanism among the figure, 2. rotating frame, 3. LOAD CELLS, 4. electrode I, 5. electrode II, 6. crystallizer, 7. cleaning apparatus, 8. support platform, 9. liquid slag bath, 10. molten steel liquid level detection device, 11. dummy ingot devices, 12. ingot chassis, 13. stripping mechanism, 14. Controlling System, 15. power supplies, 16. tip platforms, 17. column, 18. framework platforms, 19. pillar I, 20. pillar II, 21. pillar III, 22. roller I, 23. motor I, 24. motor II, 25. leading screw I, 26. telescopic conductive poles, 27. motor II I, 28. electric rod I, 29. crossbeam, 30. leading screw II, 31. motor I V, 32. stripping mechanism column, 33. motor V, 34. electric rod II, 35. sliding shoe, 36. roller II, 37. hoisting appliance pillars, 38. base, 39. hoisting appliance platforms, 40. switch I, 41. switch I I, I are actual current, I
1For setting lower current limit, I
2For setting upper current limit, H
0Be the scope of level allowance fluctuation, Δ H is for setting liquid level and actual liquid level difference, the remelting slab length of L for setting.
Embodiment
Below in conjunction with drawings and Examples the present invention is described further:
Embodiment 1: the crystallizer among the present invention adopts T shape crystallizer, and power supply is for exchanging the power supply mode of bipolar series.As Fig. 1, shown in Figure 2, comprise communication power supply 15, electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, electrode I4, electrode II5, T shape crystallizer 6, support platform 8, stripping mechanism 13, dummy ingot device 11, ingot chassis 12, molten steel liquid level detection device 10 and Controlling System 14, crystallizer 6 is fixed on the support platform 8, on support platform 8, be fixed with rotating frame 2, rotating frame 2 can rotate along the trapped orbit on the support platform 8, on rotating frame 2, adjustment mechanism is installed, be used for electrode lifting mechanism in horizontal X, the Y direction is adjusted, electrode lifting mechanism 1 places on the framework platform 18 in the rotating frame 2, between the contact surface of electrode lifting mechanism 1 and framework platform 18, be placed with LOAD CELLS 3, model is 1-RTNAED9301A, LOAD CELLS 3 can be measured the burn-off rate of electrode in reflow process, the end of electrode I4 and electrode II5 is separately fixed on the electrode lifting mechanism 1 of crystallizer 6 tops, the other end all places crystallizer 6, small cross-section place at crystallizer 6 is equipped with molten steel liquid level detection device 10, its position is apart from last, the distance h of lower section junction is 100mm, and the radioactive source of molten steel liquid level detection device is an isotropic substance; Stripping mechanism 13 is installed on the support below the support platform 8, in stripping mechanism 13, be fixed with ingot chassis 12, on ingot chassis 12, be fixed with dummy ingot device 11, drive stripping mechanism 13 by motor I V31 and extract steel ingot in the crystallizer out crystallizer 6 according to the speed of setting, for removing flue gas and the dust that reflow process produces, above crystallizer 6, be equipped with cleaning apparatus 7, power supply 15 1 ends are connected with electrode I4 in this example, the other end is connected with electrode II5, by power supply 15, electrode I4, molten slag 9, electrode II5 constitutes current supply circuit, Controlling System 14 is PLC, respectively with electrode lifting mechanism 1, LOAD CELLS 3, molten steel liquid level detection device 10, stripping mechanism 13, ingot chassis 12 and adjustment mechanism are electrically connected; After remelting finished, ingot chassis 12 transported steel ingot from support platform 8 belows.
As Fig. 9～shown in Figure 11, rotating frame 2 comprises framework platform 18,3 pillars and 4 root posts 17, prop framework platform 18 by 3 pillars, on framework platform 18, be fixed with the framework that constitutes by four root posts 17 and tip platform 16,3 pillars of rotating frame 2 contact with support platform 8, its B-C post III21 is fixed on the support platform 8, and can rotate, rotation angle range is 0～180 °, pillar I19 and pillar II20 bottom are equipped with roller I22 and drive-motor I23 thereof, the orbiting of being set on support platform 8 by motor I 23 driving rolls I22 is so that realize the replacing of electrode.On the framework platform 18 of rotating frame 2, adjustment mechanism is installed, be used for electrode lifting mechanism in horizontal X, the adjustment of Y direction, this adjustment mechanism is equipped with motor II I27, electric pushrod I28 and motor V33, electric pushrod II34 respectively on X, Y direction, two motors are connected with two electric pushrods respectively, two electric pushrods are connected with base 38 respectively, drive base 38 by the electric motor driving electric pushrod, to realize the adjustment of electrode position on horizontal X, Y direction, setting range is ± 80mm.
Electrode lifting mechanism 1 adopts the type of drive of electric motor driving leading screw, electrode lifting mechanism comprises motor II 24, hoisting appliance platform 39, leading screw I25, sliding shoe 35, roller II36, telescopic conductive pole 26, hoisting appliance pillar 37 and base 38, hoisting appliance pillar 37 upper ends are hoisting appliance platform 39, the lower end is a base 38, base 38 places on the framework platform 18, hoisting appliance pillar 37 is provided with track, sliding shoe 35 is installed in 37 on hoisting appliance pillar by the roller II36 on it, sliding shoe 35 drives roller II36 can be along the orbiting on the hoisting appliance pillar 37, motor II 24 is installed on the hoisting appliance platform 39, be connected with leading screw I25 on it, leading screw I25 is connected with sliding shoe 35, sliding shoe 35 is connected with telescopic conductive pole 26, and telescopic conductive pole 26 ends are fixed with electrode I4 and electrode II5; Driving leading screw I25 drive sliding shoe 35 and telescopic conductive pole 26 realization electrode I4 and electrode II5 by motor II 24 moves up and down.Dummy ingot device 11 is that cross-sectional shape is identical with the steel ingot cross-sectional shape of being produced, and sectional dimension is slightly less than the steel ingot of the steel ingot sectional dimension of being produced; Ingot chassis 12 be one by motor-driven lorry.Stripping mechanism 13 adopts the type of drive of electric motor driving leading screw, comprise crossbeam 29, leading screw II30, motor I V31 and stripping mechanism column 32, stripping mechanism column 32 is fixed on crystallizer 6 both sides in the support platform 8, crossbeam 29 is installed on the stripping mechanism column 32, can move up and down along stripping mechanism column 32, leading screw II30 and stripping mechanism column 32 are installed in parallel in stripping mechanism column 32 sides, leading screw II30 is connected with crossbeam 29 with motor I V31 respectively, drives leading screw II30 drive crossbeam 29 by motor I V31 and moves up and down.Cleaning apparatus 7 adopts the fly-ash separator of petticoat pipe structure.Electrode is in the fusing of the top of crystallizer 6 inside during work, and molten steel solidifies in its underpart again simultaneously, and stripping mechanism 13 extracts steel ingot out according to the given speed of Controlling System from crystallizer 6.
The control process of Controlling System of the present invention may further comprise the steps:
(1) beginning;
(2) Controlling System energising;
(3) input processing parameter: comprise and set lower current limit I
1, set upper current limit I
2, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L;
(4) communication power supply energising;
(5) melting begins;
(6) testing process parameter, Accident of Transformer warning amount, leaving water temperature(LWT), pressure and flow detect burn-off rate, detect liquid steel level, detect stripping speed, current control;
(7), judge whether to need to increase or reduce electric current according to the burn-off rate that detects;
(8) judge that actual liquid level and the absolute value of setting the liquid level difference are whether more than or equal to the scope of level allowance fluctuation, that is: | Δ H| 〉=H
0Whether set up, when | Δ H| 〉=H
0When being false, the liquid steel level that system turned back to for the 6th step detects step; Wherein Δ H is for setting the difference of liquid level and actual liquid level;
(9) as | Δ H| 〉=H
0The time, system carries out the stripping speed by PID and regulates;
(10) when steel ingot reaches setting weight L, then system finishing work.
The current control process is in described the 6th step: system carries out rise fall of electrodes PID and regulates; The actual current I of detecting electrode and setting upper current limit I
1, lower limit I
2Relation, promptly judge I
1≤ I≤I
2Whether set up, work as I
1≤ I≤I
2When being false, system turns back to electrode lifting mechanism PID regulating step.
The process of testing process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow is in described the 6th step: at first system detects process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow; Whether system prompt reports to the police, if system breaks down, then system passes through sound and light alarm; If system does not report to the police, then whether system prompt stops to smelt; If do not stop to smelt, then turn back to process parameter, Accident of Transformer warning amount, leaving water temperature(LWT) pressure and flow detection step; If stop to smelt, then cut off communication power supply, system works finishes.
Working process of the present invention: beginning, Controlling System energising, input processing parameter: set lower current limit I
1, set upper current limit I
2, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L; Power supply energising, esr begins: add liquid slag in crystallizer, the end of electrode is inserted wherein, when electrode forms current supply circuit with slag and power supply, will have electric current to export and pass through slag from power supply.Because slag has certain resistance, has occupied most of pressure drop, thereby in slag bath, form a large amount of heats, with the metal electrode fusing of inserting wherein.The molten metal drop drips from electrode tip, passes slag and converges in the metal pool, solidifies the formation steel ingot gradually under the pressure cooling of crystallizer, and steel ingot is pulled out crystallizer continuously by stripping mechanism simultaneously.In whole process, the electrode LOAD CELLS is imported detected molten speed into Controlling System, Controlling System is according to the stripping speed of molten quick decision phasing coupling, molten steel liquid level detection device is imported the detection signal of liquid steel level height into Controlling System, Controlling System is revised stripping speed in view of the above, so that the liquid level of metal pool is controlled in the setting range all the time.Replenish slag charge in the production process as required, to realize safety and stability production.In process of production, Controlling System detects simultaneously to process parameter detection, Accident of Transformer warning amount, Inlet and outlet water temperature, pressure and flow, and when breaking down, system reports to the police automatically.
Embodiment 2: the crystallizer among the present invention adopts one pole, T shape current-conductive mold, the T shape current-conductive mold that is adopted is to be equipped with conducting ring between crystallizer top and crystallizer bottom, is equipped with isolator respectively between crystallizer top and conducting ring and crystallizer bottom and the conducting ring; Its isolator is a stupalith, and conducting ring is copper.Power supply is for exchanging, and power supply mode is single electrode, T shape crystallizer conduction.As Fig. 3, shown in Figure 4, comprise communication power supply 15, electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, electrode I4, crystallizer 6, support platform 8, stripping mechanism 13, dummy ingot device 11 and Controlling System 14, crystallizer 6 is fixed on the support platform 8, on support platform 8, be fixed with rotating frame 2, on rotating frame 2, adjustment mechanism is installed, be used for electrode lifting mechanism in horizontal X, the Y direction is adjusted, electrode lifting mechanism 1 is fixed in the rotating frame 2, between the contact surface of electrode lifting mechanism 1 and rotating frame 2, be placed with LOAD CELLS 3, model is 1-RTNAED9301A, the end of electrode I4 is fixed on the electrode lifting mechanism 1 of crystallizer 6 tops, the other end all places crystallizer 6, small cross-section place at crystallizer 6 is equipped with molten steel liquid level detection device 10, its position is apart from last, the distance h of lower section junction is 50mm, and the radioactive source of molten steel liquid level detection device is an isotropic substance; Stripping mechanism 13 is installed on the support below the support platform 8, in stripping mechanism 13, be fixed with ingot chassis 12, on ingot chassis 12, be fixed with dummy ingot device 11, power supply 15 1 ends are connected with electrode, the other end is connected with dummy ingot device 11 with current-conductive mold 6 respectively, form the duplicate supply loop this moment, article one, be power supply 15, electrode I4, molten slag 9, crystallizer 6 constitutes current supply circuit, another loop is by power supply 15, electrode I4, molten slag 9, steel ingot, dummy ingot device 11 constitutes, Controlling System 14 and electrode lifting mechanism 1, LOAD CELLS 3, molten steel liquid level detection device 10, stripping mechanism 13, ingot chassis 12 is electrically connected.
This routine electrode lifting mechanism, horizontal x, y adjustment mechanism, rotating frame 2, LOAD CELLS 3, support platform 8, stripping mechanism 13, dummy ingot device 11, ingot chassis 12, Controlling System 14 are all identical with embodiment 1 structure.
This routine Controlling System is PLC, and its control process is identical with embodiment 1.Its working process: after the Controlling System energising, input processing parameter: set lower current limit I
1, set upper current limit I
2, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L; The power supply energising, Closing Switch II41, esr begins: add liquid slag in crystallizer, the end of electrode is inserted wherein, power supply 15, electrode I4, molten slag, dummy ingot device 13 constitute current supply circuits at this moment, when steel ingot length is 80mm, Closing Switch I40, be the duplicate supply loop power supply this moment, article one, be power supply 15, electrode I4, molten slag, steel ingot, dummy ingot device 13 formation current supply circuits, another is power supply 15, electrode I4, molten slag 9, crystallizer 6 formation current supply circuits.The molten metal drop drips from electrode tip, passes slag and converges in the metal pool, solidifies the formation steel ingot gradually under the pressure cooling of crystallizer, and steel ingot is pulled out crystallizer continuously by dummy ingot mechanism simultaneously.
Embodiment 3: the crystallizer among the present invention adopts bucket formula crystallizer, and power supply is a direct current, the power supply mode of bipolar series.As Fig. 5, shown in Figure 6, comprise communication power supply 15, electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, electrode I4, electrode II5, T shape crystallizer 6, support platform 8, stripping mechanism 13, dummy ingot device 11, ingot chassis 12, molten steel liquid level detection device 10 and Controlling System 14, crystallizer 6 is fixed on the support platform 8, on support platform 8, be fixed with rotating frame 2, on rotating frame 2, adjustment mechanism is installed, electrode lifting mechanism 1 places on the framework platform 18 in the rotating frame 2, between the contact surface of electrode lifting mechanism 1 and framework platform 18, be placed with LOAD CELLS 3, model is 1-RTNAED9301A, the end of electrode I4 and electrode II5 is separately fixed on the electrode lifting mechanism 1 of crystallizer 6 tops, the other end all places crystallizer 6, be equipped with molten steel liquid level detection device 10 in crystallizer 6 sides apart from upper surface 300mm place, the radioactive source of molten steel liquid level detection device is an isotropic substance; Stripping mechanism 13 is installed on the support below the support platform 8, in stripping mechanism 13, be fixed with ingot chassis 12, on ingot chassis 12, be fixed with dummy ingot device 11, drive stripping mechanism 13 by motor I V31 and extract steel ingot in the crystallizer out crystallizer 6 according to the speed of setting, for removing flue gas and the dust that reflow process produces, above crystallizer 6, be equipped with cleaning apparatus 7, power supply 15 1 ends are connected with electrode I4 in this example, the other end is connected with electrode II5, by power supply 15, electrode I4, molten slag 9, electrode II5 constitutes current supply circuit, Controlling System 14 is PLC, respectively with electrode lifting mechanism 1, LOAD CELLS 3, molten steel liquid level detection device 10, stripping mechanism 13, ingot chassis 12 and adjustment mechanism are electrically connected; After remelting finished, ingot chassis 12 transported steel ingot from support platform 8 belows.
This routine electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, support platform 8, molten steel liquid level detection device 10, stripping mechanism 13, dummy ingot device 11, ingot chassis 12, Controlling System 14 are all identical with embodiment 1 structure, and the control process of Controlling System 14 and working process are identical with embodiment 1.
Embodiment 4: the crystallizer among the present invention adopts bucket formula current-conductive mold, is equipped with conducting ring between crystallizer top and crystallizer bottom, is equipped with isolator respectively between crystallizer top and conducting ring and crystallizer bottom and the conducting ring; Its isolator is asbestos, and conducting ring is a copper material.Power supply is for exchanging, and power supply mode is electrode, crystallizer conduction.As Fig. 7, shown in Figure 8, comprise communication power supply 15, electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, electrode I4, crystallizer 6, support platform 8, stripping mechanism 13, dummy ingot device 11 and Controlling System 14, crystallizer 6 is fixed on the support platform 8, on support platform 8, be fixed with rotating frame 2, on rotating frame 2, adjustment mechanism is installed, be used for electrode lifting mechanism in horizontal X, the Y direction is adjusted, electrode lifting mechanism 1 is fixed in the rotating frame 2, between the contact surface of electrode lifting mechanism 1 and rotating frame 2, be placed with LOAD CELLS 3, model is 1-RTNAED9301A, the end of electrode I4 is fixed on the electrode lifting mechanism 1 of crystallizer 6 tops, the other end all places crystallizer 6, be equipped with molten steel liquid level detection device 10 in crystallizer 6 sides apart from upper surface 350mm place, the radioactive source of molten steel liquid level detection device is an isotropic substance; Stripping mechanism 13 is installed on the support below the support platform 8, in stripping mechanism 13, be fixed with ingot chassis 12, on ingot chassis 12, be fixed with dummy ingot device 11, between dummy ingot device 11 below the crystallizer and ingot chassis 12, on-line insulating device is set, attemperator is a roller shutter type, attemperator is opened as required or is closed, extract steel ingot in the crystallizer out crystallizer according to the speed of setting by electric motor driving stripping device 13, for removing flue gas and the dust that reflow process produces, above crystallizer, be equipped with cleaning apparatus 7, power supply 15 1 ends are connected with electrode, the other end is connected with dummy ingot device 11 with current-conductive mold 6 respectively, form the duplicate supply loop this moment, article one, be power supply 15, electrode I4, molten slag 9, crystallizer 6 constitutes current supply circuit, another loop is by power supply 15, electrode I4, molten slag 9, steel ingot, dummy ingot device 11 constitutes, Controlling System 14 respectively with electrode lifting mechanism 1, LOAD CELLS 3, stripping mechanism 13, ingot chassis 12 is electrically connected; After remelting finished, the ingot chassis transported steel ingot from the support platform below.This routine electrode lifting mechanism 1, rotating frame 2, LOAD CELLS 3, support platform 8, stripping mechanism 13, dummy ingot device 11, ingot chassis 12, Controlling System 14 are all identical with embodiment 1 structure, and the control process of Controlling System 14 and working process are identical with embodiment 2.
Claims (8)
1, a kind of slab electroslag furnace, comprise communication power supply, electrode lifting mechanism, electrode, crystallizer, support platform, the dummy ingot device, molten steel liquid level detection device, stripping mechanism and Controlling System, crystallizer is fixed in the support platform, it is characterized in that also including rotating frame and LOAD CELLS, on support platform, be provided with track, rotating frame is fixed on the support platform, and can rotate along the trapped orbit on it, horizontal adjusting mechanism is installed on rotating frame, electrode lifting mechanism places on the interior framework platform of rotating frame, between the contact surface of electrode lifting mechanism and framework platform, be equipped with LOAD CELLS, electrode one end is fixed on the electrode lifting mechanism of crystallizer top, the other end places crystallizer, molten steel liquid level detection device is installed on the crystallizer sidewall, stripping mechanism is installed on the support below the support platform, in stripping mechanism, be fixed with the ingot chassis, on the ingot chassis, be fixed with the dummy ingot device, Controlling System and electrode lifting mechanism, LOAD CELLS, stripping mechanism, the ingot chassis is electrically connected, electrode is an one pole or bipolar, power supply one end is connected with electrode during single electrode, the other end is connected with the dummy ingot device with crystallizer respectively, forms the duplicate supply loop.
2, a kind of slab electroslag furnace according to claim 1, when it is characterized in that described electrode is two electrodes, the series connection of two electrodes, power supply is connected with two electrodes respectively.
3, a kind of slab electroslag furnace according to claim 1, it is characterized in that described rotating frame comprises framework platform, three pillars and four root posts, prop framework platform by three pillars, on framework platform, be fixed with the framework that constitutes by four root posts and tip platform, three pillars of rotating frame contact with support platform, wherein one is fixed on the support platform, and can rotate, rotation angle range is 0～270 °, other two column bottoms are equipped with roller I and drive-motor I thereof, the orbiting that roller I can set on support platform.
4, a kind of slab electroslag furnace according to claim 1, it is characterized in that described electrode lifting mechanism adopts the type of drive of electric motor driving leading screw, comprise motor II, the hoisting appliance platform, leading screw I, sliding shoe, roller II, telescopic conductive pole, hoisting appliance pillar and base, hoisting appliance pillar upper end is the hoisting appliance platform, the lower end is a base, base places on the framework platform, the hoisting appliance pillar is provided with track, sliding shoe is installed in hoisting appliance by the roller II on it and props up intercolumniation, roller II can be along the orbiting on the hoisting appliance pillar, motor II is installed on the hoisting appliance platform, be connected with leading screw I on it, leading screw I is connected with sliding shoe, and sliding shoe is connected with telescopic conductive pole, and telescopic conductive pole end is fixed with electrode.
5, a kind of slab electroslag furnace according to claim 1, it is characterized in that described horizontal adjusting mechanism is to be equipped with motor, electric pushrod respectively on horizontal X, Y direction, motor is connected with electric pushrod, electric pushrod is connected with base, and its setting range on horizontal X, Y direction is ± 80mm.
6, a kind of slab electroslag furnace according to claim 1, it is characterized in that described stripping mechanism adopts the type of drive of electric motor driving leading screw, comprise crossbeam, leading screw II, motor I V and stripping mechanism column, stripping mechanism column is fixed on the crystallizer both sides in the support platform, crossbeam is installed on the stripping mechanism column, can move up and down along stripping mechanism column, leading screw II and stripping mechanism column are installed in parallel in stripping mechanism stud sides face, and leading screw is connected with crossbeam with motor respectively.
7, a kind of slab electroslag furnace according to claim 1, it is characterized in that described crystallizer is T shape crystallizer or is bucket formula crystallizer, when adopting T shape crystallizer, small cross-section place at crystallizer is equipped with molten steel liquid level detection device, its position is 0～200mm apart from the distance h scope of junction, upper and lower cross section, the radioactive source of molten steel liquid level detection device is an isotropic substance, and molten steel liquid level detection device is connected with Controlling System; When adopting bucket formula crystallizer, apart from crystallizer upper end 200～500mm; Molten steel liquid level detection device is connected with Controlling System.
8, a kind of slab electroslag furnace according to claim 1 is characterized in that may further comprise the steps the control process of described Controlling System:
(1) beginning;
(2) Controlling System energising;
(3) input processing parameter: comprise and set lower current limit I
1, set upper current limit I
2, set molten fast M, set liquid level H, the scope H of level allowance fluctuation
0, set the steel ingot length L;
(4) communication power supply energising;
(5) melting begins;
(6) testing process parameter, Accident of Transformer warning amount, leaving water temperature(LWT), pressure and flow detect burn-off rate, detect liquid steel level, detect stripping speed, current control;
(7), judge whether to need to increase or reduce electric current according to the burn-off rate that detects;
(8) judge that actual liquid level and the absolute value of setting the liquid level difference are whether more than or equal to the scope of level allowance fluctuation, that is: | Δ H| 〉=H
0Whether set up, when | Δ δ H| 〉=H
0When being false, the liquid steel level that system turned back to for (6) step detects step; Wherein Δ δ H is for setting the difference of liquid level and actual liquid level;
(9) as | Δ δ H| 〉=H
0The time, system carries out the stripping speed by PID and regulates;
(10) when steel ingot reaches setting weight L, then system finishing work.
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| CNB200710010096XA CN100519787C (en) | 2007-01-18 | 2007-01-18 | Plate blank electroslag furnace |
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| CNB200710010096XA CN100519787C (en) | 2007-01-18 | 2007-01-18 | Plate blank electroslag furnace |
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| CN100519787C CN100519787C (en) | 2009-07-29 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN1818102A (en) * | 2006-03-07 | 2006-08-16 | 东北大学 | Continuouslly-casting electroslag furnace |
-
2007
- 2007-01-18 CN CNB200710010096XA patent/CN100519787C/en active Active
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