CN103008636A - Gun insertion type stopper rod device and method using same for absorbing inclusions at gate - Google Patents
Gun insertion type stopper rod device and method using same for absorbing inclusions at gate Download PDFInfo
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- CN103008636A CN103008636A CN2013100211243A CN201310021124A CN103008636A CN 103008636 A CN103008636 A CN 103008636A CN 2013100211243 A CN2013100211243 A CN 2013100211243A CN 201310021124 A CN201310021124 A CN 201310021124A CN 103008636 A CN103008636 A CN 103008636A
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- rifle
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- stopper
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- horizontal clamper
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- 230000037431 insertion Effects 0.000 title abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 99
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
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- 238000001179 sorption measurement Methods 0.000 claims description 11
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- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 claims description 3
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- 239000000126 substance Substances 0.000 description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 5
- 239000000292 calcium oxide Substances 0.000 description 5
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- 229910000655 Killed steel Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
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Abstract
The invention provides a gun insertion type stopper rod device and a method using the same for absorbing inclusions at a gate. The device mainly comprises an absorption gun, a hollow stopper rod, a hot argon blowing device, horizontal clamps and a vertical lifting frame, the absorption gun is of a hollow bamboo-shaped structure and inserted into the hollow stopper rod of a long cylindrical structure, the upper end of the hollow stopper rod is fixed by the corresponding horizontal clamp, one end of the hot argon blowing device is connected on an external hot argon pipeline while the other end of the hot argon blowing device is inserted into a hollow pipe at the top of the hollow stopper rod, one end of the stopper rod horizontal clamp is connected with the vertical lifting frame while the other end thereof is mutually clamped with the hollow stopper rod, and one end of the absorption gun horizontal clamp is connected with the vertical lifting frame while the other end thereof is mutually clamped with the absorption gun. The method using the device for absorbing the inclusions at the gate includes the steps of gun insertion, argon sealing, gun descending, absorption and gun replacement. The device is scientific in structural design, part of time for gate changing is saved, smooth pouring of continuous casting is benefitted by using the device for absorbing sundries, molten steel cleanliness is improved, and gate nodulation probability is decreased.
Description
Technical field
The present invention relates to continuous casting with manufacturing and the application of stopper, especially relate to a kind of plug in rifle
Formula stopper device and with its method at mouth of a river place dross inclusion adsorption.Be specially adapted to steel plant's cast aluminum killed steel, contain the steel grade that aluminum steel, Ti-containing steel and rare earth steel etc. are prone to nozzle clogging.
Background technology
Continuous casting is important procedure in the metallurgical production process, as the important refractory material mouth of a river that connects tundish and crystallizer, is called as " neck " of continuous casting, has the effect of forming a connecting link, and is the important step of guaranteeing continuous casting stable operation.In steel plant's casting process, middle water containing opening and submersed nozzle dross often occurs and cause nozzle blocking, affect cast and the slab quality of continuous casting.Along with the improvement of continuous casting process and the exploitation of refractory material, had the service life at the mouth of a river to significantly improve, still, in casting cycle A1 can occur
2O
3And other element dross phenomenon of part, especially at casting Al killed steel, contain the Al steel, when containing Ti steel and rare earth steel, clogging is very serious, is perplexing continuous casting working procedure always.Nozzle clogging or obstruction have not only reduced the production efficiency of conticaster, affect whole casting process, and are the one of the main reasons that causes the steel products defective.
Nippon installs central layer additional in the submersed nozzle body that insulating materials is made, before the cast, with central layer energising heating, improve mouth of a river inner wall temperature, thus the Al that avoids invar water contact mouth of a river inner wall temperature sharply to descend and cause
2O
3Adhere to.Sumitomo Metal Industries have developed and have utilized the tundish ledge to make molten steel produce the technology of eddy current, steady flowing of molten steel, establishment the gathering of nozzle blocking thing.Japanese kobe steel is developed a kind of novel submersed nozzle with air cooling and electromagnetic mixing apparatus, is processed with the dark ring-shaped groove of 10mm on the outer wall of the mouth of a river to increase the frigorimeter area, can realize the overall process Prepared by Low Superheat Pouring, avoids nozzle blocking.U.S. Weirton steel plant have carried out a large amount of productive experiments and have alleviated Submerged Nozzle Clogging Course, take to protect cast to wait measure can reduce the generation of field trash, thereby improve Cleanliness of Molten Steel.
Going out mouth-shaped is mainly reflected on the impact depth of steel flow to crystallizer molten steel the impact of mouth of a river result of use, for satisfying the needs of high pulling rate sheet blank continuous casting, Tian Naiyuan etc. develop a kind of four side opening mouths of a river that are called as dissipative type, reduced the impact depth of molten steel and field trash, the come-up that is conducive to field trash can play the effect of prevention of immersed nozzle clogging to a certain extent.Zhao Guangrong etc. think that appropriate design mouth of a river inner-cavity structure is conducive to improve the obstruction of mouth of a river inner chamber, and the traditional straight cavate mouth of a river inner-cavity structure molten steel and mouth of a river inwall direct contact surface in the drainage process are long-pending large, A1
2O
3Also large Deng the field trash sticking probability, it is modified into the ladder cyclic formula inner chamber mouth of a river and dicyclo step type water gap, alleviated A1
2O
3Adhere to Deng field trash.The researchs such as Chen Chongfeng are thought when surface roughness surpasses 0.3mm, the viscous partial failure in molten steel boundary layer, and the protective effect of viscous layer disappears, the Al in the steel
2O
3Be easy to enrichment Deng field trash, so mouth of a river working face should be smooth as far as possible.Su Long etc. think from material research, put forth effort to develop ZrB
2, the nonmetal oxide material such as BN, ZrO-CaO-C material, low carbon materials (carbon＜5%), without silicon Al
2O
3The mouth of a river of the materials such as-C material and C and Si free materials is dropped into practice and is had certain anti-clogging effect.
What at present the whole bag of tricks was mainly studied is how to improve gate structure, how to prevent and slow down nozzle clogging, and to the flow direction of field trash and the dross mouth of a river consider considerably lessly, fundamentally do not solve the problem of nozzle clogging obstruction.The plug in rifle formula stopper absorption that the present invention is proposed is mingled with, and avoids nozzle clogging, and the method that improves Cleanliness of Molten Steel has no report, and this invention has unique novelty.
Summary of the invention
Goal of the invention of the present invention is the many deficiencies for prior art, one provides a kind of plug in rifle formula stopper device, two provide a kind of usefulness plugs in rifle formula stopper device in the method for place, mouth of a river dross inclusion adsorption, purpose is by the in time absorption of field trash at the mouth of a river and fixing of will flowing through of absorption rifle, solves the problem that nozzle clogging improves Cleanliness of Molten Steel simultaneously.Be specially adapted to existing steel plant's continuous casting stopper rod multifunction technology upgrading and measures to reform, promote the construction of clean steel platform.
The present invention is by the following technical solutions:
The absorption of a kind of mouth of a river is mingled with the plug in rifle formula stopper device of usefulness, comprises the lifting motor that is connected with horizontal clamper, it is characterized in that, described device mainly is comprised of absorption rifle, hollow stopper, hot blow argon device, horizontal clamper and vertical lift frame;
A. described absorption rifle is hollow nodular structure, inserts in the hollow stopper, and its upper end is connected with horizontal clamper, and insert in the mouth of a river lower end;
B. described hollow stopper is the elongated cylindrical structure, is divided into caput and excellent body, and caput is helical structure, and caput is connected with excellent body by screw thread, and the inside of hollow stopper is provided with the hollow tube that cooperates the absorption rifle to insert, and hollow stopper upper end is fixed with horizontal clamper;
C. described hot blow argon device is made of supply air line and nozzle, and nozzle one terminates on the external heat argon gas pipeline, and the other end inserts in the hollow tube at hollow stopper top;
D. described horizontal clamper is comprised of the horizontal clamper of stopper and the horizontal clamper of absorption rifle, and horizontal clamper one end of stopper links to each other with the vertical lift frame, and the other end and hollow stopper fold to be held; The horizontal clamper of absorption rifle, an end links to each other with the vertical lift frame, the other end and the clamping of absorption rifle phase;
E. described vertical lift frame is tubular structure, is fixed on the sidewall of tundish.
As preferred version, described absorption rifle is the bamboo pole shape, is divided into single-unit shape or more piece shape structure, is threaded connection between the joint of more piece shape structure and the joint.
As preferred version, described absorption rifle outer surface is provided with many fins or groove.
As preferred version, described absorption rifle outer surface is provided with a plurality of salient points or shrinkage pool, or any combination structure of fin, groove, salient point, shrinkage pool.
As preferred version, the inner base of described absorption rifle is made with common anti-material material, and it is the special coat of anti-material of 1 ~ 5mm that its outer surface is provided with thickness.
As preferred version, described horizontal clamper comprises the horizontal clamper of stopper and the horizontal clamper of absorption rifle, one end of the horizontal clamper of stopper, the horizontal clamper of absorption rifle is slidingly connected with the vertical lift frame respectively, and the other end is clamped in respectively on hollow stopper and the absorption rifle successively.
As preferred version, described vertical lift frame is comprised of fall way and fixed head, and fall way links to each other with horizontal clamper, and fixed head is fixed on the tundish sidewall, adjusts the height of clamper by the vertical lift frame.
A kind of usefulness is plugged in rifle formula stopper device is removed inclusion content in melting steel at place, the mouth of a river method, and its method of operating is:
A. plug in rifle: before the centre is unwrapped and watered, more piece is adsorbed rifle be threaded connection, be fixed on the horizontal clamper, the adjusting vertical lifting frame, make the hollow tube of absorption rifle centering hollow stopper, will adsorb rifle and insert in the hollow stopper, rifle rifle head upon adsorption stops after arriving hollow plug caput position;
B. argon seals: open the argon gas pipeline, pass into hot argon gas, argon gas is blown in the hollow tube from the nozzle of stopper head, form on the one hand stable argon atmospher, the blocking-up air infiltrates along the slit, plays sealing function, makes on the other hand the absorption rifle have uniform temperature;
C. fall rifle: open the hollow stopper, the centre is unwrapped and is watered, and after MOLTEN STEEL FLOW is stable, reduces the vertical lift frame, and the absorption rifle is inserted in the mouth of a river, begins to adsorb the field trash in the molten steel;
D. absorption: molten steel flows into the submersed nozzle from tundish upper nozzle, and the field trash of wherein sweeping along and 1 collision of absorption rifle form complicated high-melting-point salt, stick on the absorption rifle.
E. change rifle: after the absorption rifle is stained with field trash, extract the absorption rifle, lay down the absorption rifle joint that is stained with field trash, will adsorb rifle and reinsert in the hollow stopper, continue operation.
Adopt technique scheme, compared with prior art, plug in rifle formula stopper assembling device of the present invention, scientific structure design has been saved the time of partly changing the mouth of a river, and the absorption rifle is easy to adjust, quick, is conducive to the suitable of continuous casting and waters.Locating dross inclusion adsorption at the mouth of a river with it, its significant effect is:
1) improved Cleanliness of Molten Steel.Make molten steel enter crystallizer and obtained further purification before, very favourable to improving the casting blank solidification quality.
2) reduced the nozzle clogging probability.By the flow through field trash at the mouth of a river of absorption rifle absorption major part, greatly reduce the nozzle clogging probability, slowed down the erosion of refractory material, reduced the cost of anti-the material;
3) optimized the continuous casting operating procedure.
4) the present invention is adsorbed the method that is mingled with plugging in rifle formula stopper device at place, the mouth of a river, and operating procedure is simple and practical, has reduced the financial cost of the anti-material of continuous casting, has improved slab quality, for continuous, efficient, stable cast purifying of steel is laid a good foundation.
Description of drawings
Fig. 1 is that the present invention uses state diagram, is mouth of a river removal of inclusions schematic diagram.
Fig. 2 is that the present invention plugs in rifle formula stopper structural representation.
Fig. 3 is the present invention's one joint absorption rifle structural representation.
Among the figure, absorption rifle 1; Hot blow argon device 2; Hollow stopper 3; Horizontal clamper 4; Vertical lift frame 5; Molten steel 6; Tundish 7; The mouth of a river 8; Crystallizer 9; Shrinkage pool 10; Screw thread joint 11.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
See Fig. 1-3, a kind of plug in rifle formula stopper device, by absorption rifle 1, hot blow argon device 2, hollow stopper 3, vertical lift frame 5, horizontal clamper 4 forms.Described absorption rifle 1 is the bamboo pole shape, by rifle head and keep fit to form.Divide two types, a kind of is the single-unit type, and the rifle head part of inserting in the molten steel adopts special anti-material, and the body of a gun partly adopts common anti-material, is applicable to the situation that foreign substance in molten steel is less, need not change rifle.Another kind is the more piece type, whole minute some joints, joint with save between be connected by screw thread 11, every material-saving matter all is the anti-material of speciality, is applicable to the situation that foreign substance in molten steel is more, need to change rifle.Absorption rifle 1 appearance has some fins or groove, and a large amount of salient points or shrinkage pool 10 are perhaps arranged, or any combination of fin, groove, salient point, shrinkage pool 10, is convenient to adsorb a large amount of field trashes.Absorption rifle 1 special partial interior matrix is common anti-material, material be aluminium-carbonaceous, aluminum-zirconium-carbon matter, vitreous silica matter, magnesium-carbonaceous or aluminium-calcareous etc. one of them; Outer surface has the coat of special anti-material, and thickness is 1 ~ 5mm, and material is one or any both combination of calcium oxide, magnesia, zirconia, silica.
Hot blow argon device 2 is made of supply air line and nozzle, and nozzle one terminates on the external heat argon gas pipeline, and the other end inserts in the hollow tube at hollow stopper 3 tops.
With inserting the method for rifle formula stopper device at place, mouth of a river removal inclusion content in melting steel:
After more piece adsorbed rifle 1 and connect by screw thread 11, be fixed on the horizontal clamper 4, adjusting vertical lifting frame 5 will adsorb in the rifle 1 insertion hollow stopper 3, and the rifle head drops to stopper head place to be stopped; Pass into hot argon gas, the hollow tube of sealed hollow stopper 3.Then open hollow stopper 3, tundish 7 is opened and is watered, and after MOLTEN STEEL FLOW is stable, reduces vertical lift frame 5, makes absorption rifle 1 insert certain depth in the mouth of a river 8, begins to adsorb the field trash in the molten steel 6; When field trash be adsorbed to a certain amount of after, can extract absorption rifle 1, lay down absorption rifle 1 and be stained with a joint of field trash, then it is reinserted in the hollow stopper 3, continue to use.
Concrete operation step is as follows:
Step 1: plug in rifle.Before the centre is unwrapped and watered, more piece is adsorbed rifle 1 connect by screw thread 11, be fixed on the horizontal clamper 4, adjusting vertical lifting frame 5 makes the hollow tube that adsorbs rifle 1 centering hollow stopper 3, will adsorb rifle 1 and insert, and stops after the rifle head arrives stopper head position;
Step 2: argon envelope.Open the argon gas pipeline, pass into 1300 ℃ hot argon gas, the ventilation flow rate of argon gas is 1.2L/min, argon gas is blown in the hollow tube from the nozzle of stopper head, forms on the one hand stable argon atmospher, the blocking-up air infiltrates along the slit, play sealing function, make on the other hand the absorption rifle have uniform temperature;
Step 3: fall rifle.Open hollow stopper 3, tundish 7 is opened and is watered, and after MOLTEN STEEL FLOW was stable, it is 5 low that the crane that rifle 1 is adsorbed in clamping falls, and makes absorption rifle 1 insert certain depth in the molten steel;
Step 4: absorption.Molten steel flows into the submersed nozzle from tundish upper nozzle 8, and the field trash of wherein sweeping along and 1 collision of absorption rifle form complicated high-melting-point salt, stick on the absorption rifle 1.
Step 5: change rifle.If Cleanliness of Molten Steel is higher, one need not to change rifle in watering time; If steel quality is relatively poor, after cast a period of time, the absorption rifle is stained with field trash, then extracts the absorption rifle by the vertical lift frame, note regulating simultaneously argon flow amount, make MOLTEN STEEL FLOW keep stable, lay down a joint that is stained with field trash, change a joint, reinsert in the stopper, continue to use.
Present embodiment is plugged in rifle formula stopper device and is seen Fig. 3, this plug in rifle formula stopper device is applicable to the situation that foreign substance in molten steel is less, need not change rifle, its absorption rifle 1 is the single-unit type, the long 1900mm of the body of a gun, diameter 25mm, the long 250mm of rifle head part wherein, the outer surface of rifle head is provided with a large amount of shrinkage pools 10, and the effect of shrinkage pool 10 is a large amount of field trashes of absorption.Body of a gun refractory material is conventional aluminium-carbonaceous manufacturing, and the rifle head is special refractory material, and wherein matrix is aluminium-carbonaceous, and the outer surface of rifle head is provided with the coat of special anti-material, and coat thickness is 4mm, and material is calcium oxide.
Plug in rifle formula stopper device goes out dross inclusion adsorption at the mouth of a river method with the single-unit type
The tundish 7 that is positioned at crystallizer 9 tops will adsorb rifle 1 and be fixed on the horizontal clamper 4 before opening and watering, and adjusting vertical lifting frame 5 will adsorb rifle 1 and insert in the hollow stopper 3, and the rifle head drops to stopper head place to be stopped; Pass into hot argon gas, the hollow tube of sealed hollow stopper 3; Open hollow stopper 3, tundish 7 is opened and is watered, after MOLTEN STEEL FLOW is stable, reduce vertical lift frame 5, make absorption rifle 1 insert 250mm in the mouth of a river 8, field trash in the molten steel 6 reacts with the top layer material of absorption rifle 1, generate the high-melting-point complex inclusion, and be attracted in the shrinkage pool 10, to be cast complete after, extract 1 cleaning of absorption rifle, greatly improved Cleanliness of Molten Steel.
See that Fig. 2 present embodiment made a kind of plug in rifle formula stopper, be applicable to the situation that foreign substance in molten steel is more, need to change rifle, its absorption rifle 1 is more piece type structure, the long 2000mm of rifle, diameter 25mm is divided into 5 joints, the long 400mm of every joint, whenever head has screw thread 11 successively, and the outer surface of absorption rifle is provided with a large amount of shrinkage pool 10, and shrinkage pool 10 is used for adsorbing a large amount of field trashes.The matrix of absorption rifle 1 is aluminium-carbonaceous, and outer surface has the coat of special anti-material, and thickness is 4mm, and material is calcium oxide and magnesia.
Plug in rifle formula stopper device goes out dross inclusion adsorption at the mouth of a river method with the more piece type
Before the centre that is positioned at crystallizer 9 tops is unwrapped and watered, after more piece adsorbed rifle 1 and connect by screw thread 11, be fixed on the horizontal clamper 4, adjusting vertical lifting frame 5 will adsorb in the rifle insertion hollow stopper 3, and the rifle head drops to hollow plug caput place to be stopped; Open the nozzle of hot blow argon device 2, pass into hot argon gas, the hollow tube of sealed hollow stopper 3; Then open hollow stopper 3, tundish 7 is opened and is watered, after MOLTEN STEEL FLOW is stable, reduce vertical lift frame 5, make absorption rifle 1 insert 300mm in the mouth of a river 8, the field trash in the molten steel reacts with the top layer material of absorption rifle 1, generates the high-melting-point complex inclusion, and be attracted in the shrinkage pool 10, after a period of time to be cast, absorption rifle 1 is stained with field trash, then extracts absorption rifle 1 by vertical lift frame 5, regulate simultaneously argon flow amount, make MOLTEN STEEL FLOW keep stable, lay down the absorption rifle joint that is stained with field trash, change a joint, reinsert in the hollow stopper 3, continue to use.
Made a kind of single-unit type and plugged in rifle formula stopper, be applicable to the situation that foreign substance in molten steel is less, need not change rifle, its absorption rifle 1 is the single-unit type, the long 1900mm of rifle, and diameter 25mm, the long 250mm of rifle head part wherein, the rifle head has a large amount of fins, adsorbable a large amount of field trashes.Body of a gun refractory material is conventional aluminium-carbonaceous, and the rifle head is special refractory material, and wherein matrix is aluminum-zirconium-carbon matter, and outer surface has the coat of special anti-material, and thickness is 4mm, and material is calcium oxide.
Plug in rifle formula stopper goes out dross inclusion adsorption at the mouth of a river method with fin single-unit type
The tundish 7 that is positioned at crystallizer 9 tops will adsorb rifle 1 and be fixed on the horizontal clamper 4 before opening and watering, and adjusting vertical lifting frame 5 will adsorb rifle 1 and insert in the hollow stopper 3, and the rifle head drops to stopper head place to be stopped; Open hot blow argon device 2 and pass into hot argon gas, the hollow tube of sealed hollow stopper 3; Open hollow stopper 3, tundish 7 is opened and is watered, after MOLTEN STEEL FLOW is stable, reduce vertical lift frame 5, make absorption rifle 1 insert 250mm in the mouth of a river, field trash in the molten steel reacts with the top layer material of absorption rifle 1, generate the high-melting-point complex inclusion, and be attracted to the fin place, to be cast complete after, the cleaning of drawing guns has improved Cleanliness of Molten Steel greatly.
Embodiment 6 fin more piece types are plugged in rifle formula stopper
Made a kind of plug in rifle formula stopper, be applicable to the situation that foreign substance in molten steel is more, need to change rifle, its absorption rifle 1 is the more piece type, the long 2000mm of rifle, diameter 25mm is divided into 5 joints, the long 400mm of every joint, whenever head has screw thread 11 successively, and absorption rifle 1 has a large amount of fins, adsorbable a large amount of field trashes.Absorption rifle 1 matrix is aluminum-zirconium-carbon matter, and outer surface has the coat of special anti-material, and thickness is 4mm, and material is calcium oxide and magnesia.
Plug in rifle formula stopper in the method for place, mouth of a river dross inclusion adsorption with fin more piece type
Before the tundish 7 that is positioned at crystallizer 9 tops is opened and watered, after more piece adsorbed rifle and connect by screw thread 11, be fixed on the horizontal clamper 4, adjusting vertical lifting frame 5 will adsorb in the rifle 1 insertion hollow stopper 3, and the rifle head drops to stopper head place to be stopped; Pass into hot argon gas, the hollow tube of sealed hollow stopper 3; Open the hollow stopper, tundish 7 is opened and is watered, after MOLTEN STEEL FLOW is stable, reduce vertical lift frame 5, make absorption rifle 1 insert 300mm in the mouth of a river, the field trash in the molten steel reacts with the top layer material of absorption rifle 1, generates the high-melting-point complex inclusion, and be attracted to the fin place, after a period of time to be cast, absorption rifle 1 is stained with field trash, then extracts the absorption rifle by vertical lift frame 5, regulate simultaneously argon flow amount, make MOLTEN STEEL FLOW keep stable, lay down a joint that is stained with field trash, change a joint, reinsert in the stopper, continue to use.
More than disclosed only be specific embodiments of the invention; although the present invention discloses as above with preferred embodiment; but the present invention is not limited thereto; the changes that any person skilled in the art can think of; within not breaking away from design philosophy of the present invention and scope; the present invention is carried out various changes and retouching, all should drop within protection scope of the present invention.
Claims (8)
1. a plug in rifle formula stopper device comprises the lifting motor that is connected with horizontal clamper, it is characterized in that, described device mainly is comprised of absorption rifle, hollow stopper, hot blow argon device, horizontal clamper and vertical lift frame;
A. described absorption rifle is hollow nodular structure, inserts in the hollow stopper, and its upper end is connected with horizontal clamper, and insert in the mouth of a river lower end;
B. described hollow stopper is the elongated cylindrical structure, is divided into caput and excellent body, and caput is helical structure, and caput is connected with excellent body by screw thread, and the inside of hollow stopper is provided with the hollow tube that cooperates the absorption rifle to insert, and hollow stopper upper end is fixed with horizontal clamper;
C. described hot blow argon device is made of supply air line and nozzle, and nozzle one terminates on the external heat argon gas pipeline, and the other end inserts in the hollow tube at hollow stopper top;
D. described horizontal clamper is comprised of the horizontal clamper of stopper and the horizontal clamper of absorption rifle, and horizontal clamper one end of stopper links to each other with the vertical lift frame, and the other end and hollow stopper fold to be held; The horizontal clamper of absorption rifle, an end links to each other with the vertical lift frame, the other end and the clamping of absorption rifle phase;
E. described vertical lift frame is tubular structure, is fixed on the sidewall of tundish.
2. plug in rifle formula stopper device according to claim 1 is characterized in that described absorption rifle is the bamboo pole shape, is divided into single-unit type or more piece type structure, is threaded connection between the joint of more piece type structure and the joint.
3. plug in rifle formula stopper device according to claim 2 is characterized in that, described absorption rifle outer surface is provided with many fins or groove.
4. plug in rifle formula stopper device according to claim 3 is characterized in that, described absorption rifle outer surface is provided with a plurality of salient points or shrinkage pool, or any combination structure of fin, groove, salient point, shrinkage pool.
5. described plug in rifle formula stopper device is characterized in that according to claim 1-4, and the inner base of described absorption rifle is made with common anti-material material, and it is the special coat of anti-material of 1～5mm that its outer surface is provided with thickness.
6. plug in rifle formula stopper device according to claim 1, it is characterized in that, described horizontal clamper comprises the horizontal clamper of stopper and the horizontal clamper of absorption rifle, one end of the horizontal clamper of stopper, the horizontal clamper of absorption rifle is slidingly connected with the vertical lift frame respectively, and the other end is clamped in respectively on hollow stopper and the absorption rifle successively.
7. plug in rifle formula stopper device according to claim 1, it is characterized in that described vertical lift frame is comprised of fall way and fixed head, fall way links to each other with horizontal clamper, fixed head is fixed on the tundish sidewall, adjusts the height of clamper by the vertical lift frame.
8. one kind with inserting the method for rifle formula stopper device at place, mouth of a river dross inclusion adsorption, it is characterized in that its method of operating is:
A. plug in rifle: before the centre is unwrapped and watered, more piece is adsorbed rifle be threaded connection, be fixed on the horizontal clamper, the adjusting vertical lifting frame, make the hollow tube of absorption rifle centering hollow stopper, will adsorb rifle and insert in the hollow stopper, rifle rifle head upon adsorption stops after arriving hollow plug caput position;
B. argon seals: open the argon gas pipeline, pass into hot argon gas, argon gas is blown in the hollow tube from the nozzle of stopper head, form on the one hand stable argon atmospher, the blocking-up air infiltrates along the slit, plays sealing function, makes on the other hand the absorption rifle have uniform temperature;
C. fall rifle: open the hollow stopper, the centre is unwrapped and is watered, and after MOLTEN STEEL FLOW is stable, reduces the vertical lift frame, and the absorption rifle is inserted in the mouth of a river, begins to adsorb the field trash in the molten steel;
D. absorption: molten steel flows into the submersed nozzle from tundish upper nozzle, and the field trash of wherein sweeping along and 1 collision of absorption rifle form complicated high-melting-point salt, stick on the absorption rifle;
E. change rifle: after the absorption rifle is stained with field trash, extract the absorption rifle, lay down the absorption rifle joint that is stained with field trash, will adsorb rifle and reinsert in the hollow stopper, continue operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310021124.3A CN103008636B (en) | 2013-01-21 | 2013-01-21 | Gun insertion type stopper rod device and method using same for absorbing inclusions at gate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310021124.3A CN103008636B (en) | 2013-01-21 | 2013-01-21 | Gun insertion type stopper rod device and method using same for absorbing inclusions at gate |
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| CN103008636A true CN103008636A (en) | 2013-04-03 |
| CN103008636B CN103008636B (en) | 2015-01-07 |
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| CN201310021124.3A Expired - Fee Related CN103008636B (en) | 2013-01-21 | 2013-01-21 | Gun insertion type stopper rod device and method using same for absorbing inclusions at gate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105935749A (en) * | 2016-06-28 | 2016-09-14 | 山东钢铁股份有限公司 | Method for eliminating flocculating flow blocking of upper nozzle of tundish |
| CN106493347A (en) * | 2016-10-25 | 2017-03-15 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
| CN108176844A (en) * | 2018-01-15 | 2018-06-19 | 山东钢铁股份有限公司 | A kind of device and method for clearing up tundish upper nozzle dross object |
| CN109226731A (en) * | 2018-09-07 | 2019-01-18 | 宁国市宏达电炉有限公司 | A kind of rising pouring intermediate frequency holding furnace with automatic cleaning sprue gate function |
| CN110218835A (en) * | 2019-06-06 | 2019-09-10 | 山东钢铁股份有限公司 | The device and smelting process of inclusion removal under a kind of slag interface |
| CN112024865A (en) * | 2020-11-03 | 2020-12-04 | 北京科技大学 | Stopper rod, tundish and method for removing inclusions in liquid metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109226731A (en) * | 2018-09-07 | 2019-01-18 | 宁国市宏达电炉有限公司 | A kind of rising pouring intermediate frequency holding furnace with automatic cleaning sprue gate function |
| CN110218835A (en) * | 2019-06-06 | 2019-09-10 | 山东钢铁股份有限公司 | The device and smelting process of inclusion removal under a kind of slag interface |
| CN112024865A (en) * | 2020-11-03 | 2020-12-04 | 北京科技大学 | Stopper rod, tundish and method for removing inclusions in liquid metal |
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| CN103008636B (en) | 2015-01-07 |
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Address after: 063210 Bohai Avenue, Caofeidian new town, Tangshan City, Hebei, 21 Patentee after: NORTH CHINA University OF SCIENCE AND TECHNOLOGY Address before: 063000 Xinhua Xi Road, Tangshan City, Hebei 46 Patentee before: Hebei United University |
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Granted publication date: 20150107 |