CN201102059Y - Automatic concurrent heating device for continuous casting at low-temperature - Google Patents
Automatic concurrent heating device for continuous casting at low-temperature Download PDFInfo
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- CN201102059Y CN201102059Y CNU2007200470939U CN200720047093U CN201102059Y CN 201102059 Y CN201102059 Y CN 201102059Y CN U2007200470939 U CNU2007200470939 U CN U2007200470939U CN 200720047093 U CN200720047093 U CN 200720047093U CN 201102059 Y CN201102059 Y CN 201102059Y
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Abstract
The utility model discloses an automatic heat compensator for low-temperature continuous casting, which includes a compensator (3) and an intelligent temperature control system; the compensator (3) is positioned between a tundish (2) and a crystallizer (4) of a continuous casting device; the intelligent temperature control system includes an intelligent temperature controller (34), a non-contact temperature sensor (33) and a medium frequency power (35). The automatic heat compensator can not only reduce the superheat of molten steel before heat compensation, but also make sure the temperature of the molten steel after heat compensation at a set value, and meanwhile reduce the temperature drop of the molten steel of the tundish.
Description
Technical field
The utility model relates to a kind of automatic heat patching device of low temperature continuous casting, and it is applicable to the complementary heating of square billet, slab low temperature continuous casting molten steel.
Background technology
In traditional continuous casting process, generally all there is not the molten steel heat patching device, because conticaster middle water containing opening diameter is little, the time of cast is long, the tundish heat waste is big, in order to help the come-up of impurity in the molten steel, avoid freezing at cast later stage middle water containing opening, continuous casting production is interrupted, and usual method is to improve the degree of superheat of melting molten steel.But bring following negative effect thus: (1) has increased energy consumption, has improved production cost; (2) accelerate the oxidation rate of metal, increased the waste of metal; (3) accelerated the etch rates of molten steel, shortened the service life of smelting equipment, steel ladle and tundish refractory material; (4) metal and nonmetal oxide increase in the molten steel, cause field trash and shrinkage cavity in the continuous casting billet to increase, the temperature height can cause that also continuous casting billet cracks, center segregation, even the base shell thickness of liquid heart steel billet in the crystallizer is differed, this all can influence continuous casting billet quality, and especially in the cast later stage, liquid steel temperature is on the low side, impurity and bubble can not fully float, and continuous casting billet quality is poorer; (5) owing to dispel the heat, the liquid steel temperature in steel ladle and the tundish is a variable quantity that constantly descends, and this operates to continuous casting, and especially the Flow-rate adjustment of casting speed, crystallizer and two cold-zone cooling waters has been brought difficulty, and carelessness is arranged slightly, will produce the bleedout accident; 6, in the cast later stage, because the molten steel dissipated heat is more, its temperature is on the low side, is easy to generate " annotating surplus ", reduces the recovery rate of molten steel.
Middle Baogang water is carried out the ditch type line-frequency induction heating of concurrent heating and ladle or tundish molten steel are carried out the plasma heating of concurrent heating have been appearred in the beginning of the eighties both at home and abroad, and these two kinds of methods all are that molten steel in wrapping is carried out whole concurrent heating, and concurrent heating power is big.Adopt power frequency 1070KW ditch type electromagnetic induction heater as Japan eternal lasting factory at 7 tons of tundish of circular-arc type continuous casting machine.Italy Te Ni factory three stream continuous small-billet casting tundish are installed plasma heater, and peak power output 120-130KW, maximum current are 500A, plasma arc length 100-350mm, argon flow amount 9-20m
3/ h, cooling water 30m
3/ h; Japan Kobe adds 80 tons of tundish of 230 * (650-1800) mm slab casters of Gu Chuan steel mill 2.4MW single phase ac plasma heating system has been installed, maximum arc current 7.5KA, maximum arc voltage 350KV argon phase flow 9-20m
3/ h, cooling water 30m
3/ h.These two kinds of heating means play certain concurrent heating effect in cast in the later stage, but concurrent heating integrated cost height, and product quality is improved not obviously after the concurrent heating, and during the work of plasma heating system, noise is big especially, and the argon gas consumption is big.Therefore these two kinds of heat patching methods are difficult to expand wide the application at present.
Summary of the invention
The utility model provides a kind of automatic heat patching device of low temperature continuous casting, and it not only can reduce the degree of superheat of the preceding molten steel of concurrent heating, and can guarantee that the liquid steel temperature after the concurrent heating is constant in setting value, can also reduce the temperature drop of tundish molten steel simultaneously.
The utility model has adopted following technical scheme: a kind of automatic heat patching device of low temperature continuous casting; it comprises afterburner and intelligent temperature control system; afterburner is between the tundish and crystallizer of casting apparatus; afterburner comprises simple shape shell; on shell; following two ends are provided with ring flange; upper flange plate is connected with the tundish bottom; lower flange is connected with the sliding sleeve of inert gas shielding cover; both sides at shell are provided with fairlead; the inboard of shell is provided with the spirality induction coil; between spirality induction coil and outer casing inner wall and the turn-to-turn of induction coil be provided with insulating support; inner surface at induction coil is provided with insulation sleeve; the inboard of insulation sleeve is provided with collet; the inboard of collet is provided with crucible; the bottom of crucible is a nozzle brick; the center of nozzle brick is provided with the mouth of a river; draw in the fairlead by the shell both sides respectively at the two ends of induction coil; be socketed with the flexible insulation pipe respectively between the low level cooling water inlet pipe of casting apparatus and the two ends of high-order cooling water outlet pipe and induction coil; be welded with the copper binding post respectively at the induction coil two ends of drawing by the package lead hole; described intelligent temperature control system comprises intelligent temperature controller; non-contact temperature sensor and intermediate frequency power supply; non-contact temperature sensor is in the inert gas shielding cover outside; non-contact temperature sensor is connected with the signal input part of intelligent temperature controller; the alarm signal output ends of intelligent temperature controller is connected with electric horn; the control signal output of intelligent temperature controller is connected with the control signal input of intermediate frequency power supply frequency conversion circuit, and the voltage of intermediate frequency output of intermediate frequency power supply is connected with two binding posts of induction coil.
Described cylindrical case is non-ferromagnetic aluminum alloy materials, and it is made up of two semicircular cylinders, and described two fairleads are separately positioned on the downside of a semicircular cylinder and the upside of second half cylinder.Described spirality induction coil is formed by the hollow copper tubing coiling.
Described tundish bottom is provided with the mouth of a river, and middle water containing opening is the thermal energy transfer passage, and its diameter equates that with the crucible intracavity diameter middle water containing opening, crucible, the mouth of a river, inert gas shielding cover and crystallizer are on same axis.Described non-contact temperature sensor is in the horizontal radial position that the inert gas shielding cover detects the outside, hole, and non-contact temperature sensor is set to infrared temperature probe or radiation pyrometer.
The mouth of a river of described crucible bottom can be provided with metering nozzle or long nozzle, is provided with stopper at metering nozzle or long nozzle place, and stopper top is set to some joint sleeve bricks, and the bottom is set to chock plug, and chock plug matches with the mouth of a river.The mouth of a river of described crucible bottom also can be set to the slide gate nozzle with upper and lower slide plate.Described intelligent temperature controller comprises temperature setting circuit; input signal linearityization circuit; the A/D conversion circuit; temperature alarm circuit; the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit and digital display circuit; non-contact temperature sensor is connected with the A/D conversion circuit with input signal linearityization circuit successively; the linear digital signal is divided into three the tunnel after the conversion of A/D conversion circuit; one the tunnel is connected with temperature alarm circuit; temperature alarm circuit is connected with electric horn; the second the tunnel is connected with the digital display circuit; Third Road successively with the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit is connected with induction coil; electric current of intermediate frequency produces magnetic field after by induction coil; this magnetic field produces eddy current in the afterburner molten steel; make molten steel obtain concurrent heating; non-contact temperature sensor detects the liquid steel temperature that records the hole from the inert gas shielding cover; the simulated photoelectric signal that sensor produces is sent into intelligent temperature controller; thereby form a closed-system, the liquid steel temperature control circuit is connected with temperature setting circuit.
The utlity model has following beneficial effect: 1, energy consumption descends: the utility model is provided with the concurrent heating district between tundish and crystallizer, concurrent heating is provided with automatic heat patching device in the district, automatic heat patching device is provided with intelligent temperature control system, it can carry out dynamically concurrent heating continuously to small amount of molten steel with smaller power, the concurrent heating temperature stabilization of molten steel, controlled, under the prerequisite that remains the molten steel good fluidity, not only can reduce the degree of superheat of molten steel, realize low temperature continuous casting (the tapping liquid steel temperature gets final product than the high 5-10 of die casting ℃), and can keep entering the molten steel concurrent heating of crystallizer to design temperature, mode by convection current and conduction is replenished the molten steel heat energy dissipation in the tundish simultaneously, and minimizing along with molten steel in the tundish, its concurrent heating effect is more and more obvious, can reduce comprehensive energy consumption; 2, metal loss reduces: after molten steel overheat reduced, the oxidation rate of metal material (comprising expensive) was slowed down, and the loss of metal material reduces; 3, prolong the service life of equipment, after molten steel overheat reduced, molten steel slowed down the etch rates of the refractory material of steelmaking equipment, steel ladle and tundish, and prolong the service life of refractory material; 4, the quality of continuous casting billet improves: molten steel overheat reduces and molten steel has good flowability, so not only can make metal oxide and nonmetal oxide minimizing in the molten steel, and the impurity in the molten steel can access abundant come-up, field trash and shrinkage cavity in the continuous casting billet obviously reduce, and can improve the quality of continuous casting billet; 5, recovery rate of iron improves: be provided with crucible in the afterburner housing, the mouth of a river of the bottom of crucible can be set to the metering nozzle of stopper or long nozzle, also can setly be changed to and be with, the slide gate nozzle of lower skateboard, can control the unlatching of molten steel like this, close and flow, after changing the little mouth of a river of tundish into the big mouth of a river, help after the concurrent heating of concurrent heating district the partial heat energy in the molten steel to the transmission of tundish molten steel, be that the tundish molten steel obtains concurrent heating, and the approaching more cast later stage, molten steel more after a little while in the tundish, the concurrent heating effect is obvious more, thereby has solved " annotating surplus " difficult problem; 6, technological operation is simplified: automatic heat patching device is provided with intelligent temperature control system, liquid steel temperature in the inflow crystallizer can be controlled at the steady state value of setting like this, thereby simplified operating procedure, do not need ceaselessly to change the flow of crystallizer and two cold-zone cooling waters and the pulling rate of Blank drawing machine, quality that not only can the stabilizing continuous casting base, and the generation that can stop the bleedout accident.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the structural representation of low temperature continuous casting device
Fig. 3 is the structural representation of the utility model afterburner
The specific embodiment
According to Fig. 1; Fig. 2 and Fig. 3; the utility model is a kind of automatic heat patching device of low temperature continuous casting; casting apparatus is provided with ladle 1 from top to bottom successively; tundish 2; inert gas shielding cover 17; crystallizer 4; triangle member 16; lubricated orifice plate 15; vibrating mechanism 14; secondary cooling zone 5; air water atomizer 6; Blank drawing machine 7; bending machine 8; arc-shaped guide rail 9; straightener 13; water-cooled cutting torch 12; raceway 11 and cold bed 10; automatic heat patching device is between the tundish 2 and crystallizer 4 of casting apparatus; automatic heat patching device comprises afterburner 3 and intelligent temperature control system; afterburner 3 is between the tundish 2 and crystallizer 4 of casting apparatus; afterburner 3 comprises cylindrical case 18; cylindrical case 18 is non-ferromagnetic aluminum alloy materials; it is made up of two semicircular cylinders; on shell 18; following two ends are provided with ring flange; upper flange plate is connected with tundish 2 bottoms; lower flange is connected with the sliding sleeve of inert gas shielding cover 17; both sides at shell 18 are provided with fairlead; two fairleads are separately positioned on the downside of a semicircular cylinder and the upside of second half cylinder; the inboard of shell 18 is provided with spirality induction coil 20; spirality induction coil 20 is formed by the hollow copper tubing coiling; between spirality induction coil 20 and shell 18 inwalls and the turn-to-turn of induction coil 20 be provided with insulating support 19; insulating support 19 is made by the glass epoxy resin board; inner surface at induction coil 20 is provided with insulation sleeve 21; insulation sleeve 21 is made by mica; the inboard of insulation sleeve 21 is provided with collet 22; collet 22 is rolled by asbestos cloth and forms; has certain thickness; the inboard of collet 22 is provided with crucible 23; crucible 23 is by high-temperature refractory; additive and adhesive mix the back knotting and form; high-temperature refractory is a quartz sand; magnesia; additive is a boric acid; binding agent is a waterglass; the bottom of crucible 23 is a nozzle brick 24; nozzle brick 24 is made by the high-temperature refractory of the ZrO2 that contains 60%-95%, and the center of nozzle brick 24 is the mouth of a river 28, and the mouth of a river 28 of crucible 23 bottoms can be provided with metering nozzle or long nozzle; be provided with stopper 36 at metering nozzle or long nozzle place; the top of stopper 36 is set to some joint sleeve bricks, and the bottom is set to chock plug, and chock plug is corresponding with the mouth of a river; the mouth of a river 28 of crucible 23 bottoms also can be set to be with; the slide gate nozzle of lower skateboard; slide plate and nozzle brick 24 will align; dress is flat, on; lower skateboard wants the truncation mouth of a river not have obstruction, and draw in the fairlead by shell 18 both sides respectively at the two ends of induction coil 20; be socketed with flexible insulation pipe 30 respectively between the two ends of the low level cooling water inlet pipe 31 of casting apparatus and high-order cooling water outlet pipe 25 and induction coil 20; 26, cooling water inlet pipe 31 is communicated with de-mineralized water source, and its cooling water backwater flows in the cooling pond through outlet pipe 25 and recycles; be welded with copper binding post 27 respectively at induction coil 20 two ends of drawing by shell 18 fairleads; 29, intelligent temperature control system comprises intelligent temperature controller 34; non-contact temperature sensor 33 and intermediate frequency power supply 35, intelligent temperature controller 34 comprises temperature setting circuit; input signal linearityization circuit; the A/D conversion circuit; temperature alarm circuit; the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit and digital display circuit; non-contact temperature sensor 33 is connected with the A/D conversion circuit with input signal linearityization circuit successively; the linear digital signal is divided into three the tunnel, the one tunnel and is connected with temperature alarm circuit after the conversion of A/D conversion circuit, and temperature alarm circuit is connected with electric horn; the second the tunnel is connected with the digital display circuit; Third Road successively with the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit is connected with induction coil 20, and electric current of intermediate frequency produces magnetic field by induction coil 20 backs, and this magnetic field produces eddy current in afterburner 3 molten steel; make molten steel obtain concurrent heating; non-contact temperature sensor 33 detects the liquid steel temperature that records the hole 32 from inert gas shielding cover 17, and the simulated photoelectric signal that sensor 33 produces is sent into intelligent temperature controller 34, thereby forms a closed-system; the liquid steel temperature control circuit is connected with temperature setting circuit; non-contact temperature sensor 33 is in inert gas shielding cover 17 outsides, and non-contact temperature sensor 33 is connected with the signal input part of intelligent temperature controller 34, and non-contact temperature sensor 33 is positioned at inert gas shielding cover 17 and detects hole 32 outer radial horizontal levels; non-contact temperature sensor 33 is set to infrared temperature probe or radiation pyrometer; non-contact temperature sensor 33 is connected with the signal input part of intelligent temperature controller 34, and the output of the temperature alarm circuit of intelligent temperature controller 34 is connected with electric horn, and the control signal output of intelligent temperature controller 34 is connected with the control signal input of intermediate frequency power supply 35 frequency conversion circuits; two binding posts 27,29 of the voltage of intermediate frequency output of intermediate frequency power supply 35 and induction coil 20 are connected.Tundish 2 bottoms are provided with the mouth of a river, and middle water containing opening is the thermal energy transfer passage, and its diameter equates that with crucible 23 intracavity diameters middle water containing opening, crucible 23, the mouth of a river 28, inert gas shielding cover 17 and crystallizer 4 are on same axis.
The heat patching method of low temperature continuous casting is to be provided with molten steel concurrent heating district between the tundish 2 of casting apparatus and crystallizer 4; in the concurrent heating district, be provided with automatic heat patching device; automatic heat patching device adopts the liquid steel temperature after non-contact temperature sensor 33 is measured concurrent heating; and adopt the heating means of centreless Medium frequency induction that molten steel in the afterburner 3 of tundish 2 inflow heat patching devices is carried out dynamically concurrent heating continuously; concurrent heating to the molten steel of design temperature flows in crystallizer 4 inner chambers through inert gas shielding cover 17; when the molten steel in the afterburner 3 was carried out concurrent heating, the partial heat energy of molten steel can carry out concurrent heating to the molten steel in the tundish 2 by convection current and heat conducting mode in the afterburner 3.
Before pouring into a mould, need to carry out preparation, strand guiding and inspection, Blank drawing machine 7 and the water-cooled cutting torch 12 of secondary cooling zone 5, the inspection of cold bed 10, the operation of blocking dummy ingot head and the inspection of intelligent temperature control system of the preparation of preparation, tundish 2 of ladle and inspection, crystallizer 4
1, before baking tundish 2, should check afterburner 3, and check between shell 18 and the tundish 2 be connected whether reliable, whether the mouth of a river of middle water containing opening and afterburner centering, 2, baking afterburner 3 baking tundish 2 time, temperature will be led to cooling water in the induction coil 20 more than 1000 ℃ in bake process; 3, tundish 2 back in place checks whether the mouths of a river of nozzle bricks 24 are closed tightly, 4, whether the cooling water flow of intermediate frequency power supply 35 and induction coil 20 suitable; 5, whether the argon pressure of the air pressure of two cold-zone atomizers, hydraulic pressure and inert gas shielding cover 17 is suitable.
After molten steel is filled with tundish 2 and afterburner 3, check the design temperature of the intelligent temperature controller 34 of intelligent temperature control system, connect cooling water source, source of the gas then, the water source of secondary cooling zone 5 is taking off dummy bar, continuous casting billet is opened after entering Blank drawing machine 7 again, connect power supply again, treat that liquid steel temperature in the afterburner 3 reaches design temperature after, can open and water.
Open the mouth of a river 28 of nozzle brick 24, the molten steel after concurrent heating flows into crystallizers 4 inner chambers by way of inert gas shielding cover 17, handles the dummy ingot device, after taking off dummy bar, continuous casting billet and entering Blank drawing machine 7, promptly enters normal continuous casting flow process.After continuous casting finishes, close the automatic heat patching power supply earlier, close the argon gas source of the gas again, treat to close water source and compressed air gas source at last after the apparatus cools.
The simulated photoelectric signal of the liquid steel temperature after the concurrent heating that non-contact temperature sensor 33 records is delivered to the signal input part of intelligent temperature controller 34; intelligent temperature controller 34 comprises temperature setting circuit; input signal linearityization circuit; the A/D conversion circuit; temperature alarm circuit; the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit and digital display circuit; non-contact temperature sensor 33 is connected with the A/D conversion circuit with input signal linearityization circuit successively; the linear digital signal is divided into three the tunnel after the conversion of A/D conversion circuit; one the tunnel is connected with temperature alarm circuit; temperature alarm circuit is connected with electric horn; the second the tunnel is connected with the digital display circuit; Third Road successively with the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit is connected with induction coil 20; electric current of intermediate frequency produces magnetic field by induction coil 20 backs; this magnetic field produces eddy current in afterburner 3 molten steel; make molten steel obtain concurrent heating; non-contact temperature sensor 33 detects the liquid steel temperature that records the hole 32 from inert gas shielding cover 17; the simulated photoelectric signal that sensor 33 produces is sent into intelligent temperature controller 34, thereby forms a closed-system.The liquid steel temperature control circuit is connected with temperature setting circuit again, sensor detects the liquid steel temperature simulated photoelectric signal that obtains and be transformed to data signal after intelligent temperature controller 34 middle longitude processing, this data signal is delivered to respectively and is also delivered to the liquid steel temperature control circuit when digital display circuit shows molten steel actual temperature and temperature alarm circuit, in this control circuit, be transformed into once more and the corresponding analog control signal of intermediate frequency power supply frequency changer circuit, under the effect of this signal with the given temperature digital signal digital controlled signal after relatively.IGCT control utmost point trigger impulse frequency in the intermediate frequency power supply frequency changer circuit changes, and causes that the angle of flow of IGCT changes, and therefore the electrical heating power that is added on the induction coil 20 is changed, thereby plays the effect of automatic control liquid steel temperature.
Liquid steel temperature simulated photoelectric signal is also delivered to the alarm circuit of intelligent temperature controller 34 when being transformed to data signal after the linearization process, then report to the police when liquid steel temperature meets or exceeds alarm temperature.
Claims (8)
1; a kind of automatic heat patching device of low temperature continuous casting; it is characterized in that it comprises afterburner (3) and intelligent temperature control system; afterburner (3) is positioned between the tundish (2) and crystallizer (4) of casting apparatus; afterburner (3) comprises cylindrical case (18); on shell (18); following two ends are provided with ring flange; upper flange plate is connected with tundish (2) bottom; lower flange is connected with the sliding sleeve of inert gas shielding cover (17); both sides at shell (18) are provided with fairlead; the inboard of shell (18) is provided with spirality induction coil (20); between spirality induction coil (20) and shell (18) inwall and the turn-to-turn of induction coil (20) be provided with insulating support (19); inner surface at induction coil (20) is provided with insulation sleeve (21); the inboard of insulation sleeve (21) is provided with collet (22); the inboard of collet (22) is provided with crucible (23); the bottom of crucible (23) is nozzle brick (24); the center of nozzle brick (24) is provided with the mouth of a river (28); draw in the fairlead by shell (18) both sides respectively at the two ends of induction coil (20); be socketed with flexible insulation pipe (30 respectively between the two ends of the low level cooling water inlet pipe (31) of casting apparatus and high-order cooling water outlet pipe (25) and induction coil (20); 26); be welded with copper binding post (27 respectively at induction coil (20) two ends of drawing by shell (18) fairlead; 29); described intelligent temperature control system comprises intelligent temperature controller (34); non-contact temperature sensor (33) and intermediate frequency power supply (35); non-contact temperature sensor (33) is in inert gas shielding cover (17) outside; non-contact temperature sensor (33) is connected with the signal input part of intelligent temperature controller (34); the alarm signal output ends of intelligent temperature controller (34) is connected with electric horn; the control signal output of intelligent temperature controller (34) is connected with the control signal input of intermediate frequency power supply frequency conversion circuit; two binding posts (27,29) of the voltage of intermediate frequency output of intermediate frequency power supply (35) and induction coil (20) are connected.
2, the automatic heat patching device of low temperature continuous casting according to claim 1, it is characterized in that described cylindrical case (18) is non-ferromagnetic aluminum alloy materials, it is made up of two semicircular cylinders, and described two fairleads are separately positioned on the downside of a semicircular cylinder and the upside of second half cylinder.
3, the automatic heat patching device of low temperature continuous casting according to claim 1 is characterized in that described spirality induction coil (20) is formed by the hollow copper tubing coiling.
4, the automatic heat patching device of low temperature continuous casting according to claim 1; it is characterized in that described tundish (2) bottom is provided with the mouth of a river; middle water containing opening is the thermal energy transfer passage; its diameter equates that with crucible (23) intracavity diameter middle water containing opening, crucible (23), the mouth of a river (28), inert gas shielding cover (17) and crystallizer (4) are on same axis.
5, the automatic heat patching device of low temperature continuous casting according to claim 1; it is characterized in that described non-contact temperature sensor (33) is in the horizontal radial position that inert gas shielding cover (17) detects the outside, hole (32), non-contact temperature sensor (33) is set to infrared temperature probe or radiation pyrometer.
6, the automatic heat patching device of low temperature continuous casting according to claim 1, the mouth of a river (28) that it is characterized in that described crucible (23) bottom can be provided with metering nozzle or long nozzle, be provided with stopper (36) at metering nozzle or long nozzle place, stopper (36) top is set to some joint sleeve bricks, the bottom is set to chock plug, and chock plug matches with the mouth of a river.
7, the automatic heat patching device of low temperature continuous casting according to claim 1, the mouth of a river (28) that it is characterized in that described crucible (23) bottom also can be set to the slide gate nozzle with upper and lower slide plate.
8; the automatic heat patching device of low temperature continuous casting according to claim 1; it is characterized in that described intelligent temperature controller (34) comprises temperature setting circuit; input signal linearityization circuit; the A/D conversion circuit; temperature alarm circuit; the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit and digital display circuit; non-contact temperature sensor (33) is connected with the A/D conversion circuit with input signal linearityization circuit successively; the linear digital signal is divided into three the tunnel after the conversion of A/D conversion circuit; one the tunnel is connected with temperature alarm circuit; temperature alarm circuit is connected with electric horn; the second the tunnel is connected with the digital display circuit; Third Road successively with the liquid steel temperature control circuit; the digital-analog conversion circuit; intermediate frequency power supply frequency conversion circuit is connected with induction coil (20); electric current of intermediate frequency produces magnetic field by induction coil (20) back; this magnetic field produces eddy current in afterburner (3) molten steel; make molten steel obtain concurrent heating; non-contact temperature sensor (33) detects the liquid steel temperature that records the hole (32) from inert gas shielding cover (17); the simulated photoelectric signal that sensor (33) produces is sent into intelligent temperature controller (34); thereby form a closed-system, the liquid steel temperature control circuit is connected with temperature setting circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200470939U CN201102059Y (en) | 2007-09-25 | 2007-09-25 | Automatic concurrent heating device for continuous casting at low-temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200470939U CN201102059Y (en) | 2007-09-25 | 2007-09-25 | Automatic concurrent heating device for continuous casting at low-temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121193B (en) * | 2007-09-25 | 2011-01-19 | 江苏兴利来特钢有限公司 | Low temperature continuous casting heat patching method and its automatic heat patching device |
-
2007
- 2007-09-25 CN CNU2007200470939U patent/CN201102059Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121193B (en) * | 2007-09-25 | 2011-01-19 | 江苏兴利来特钢有限公司 | Low temperature continuous casting heat patching method and its automatic heat patching device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080820 Effective date of abandoning: 20070925 |