CN201249265Y - Continuous cast slab end casting anti-pouring device - Google Patents
Continuous cast slab end casting anti-pouring device Download PDFInfo
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- CN201249265Y CN201249265Y CNU2008200584493U CN200820058449U CN201249265Y CN 201249265 Y CN201249265 Y CN 201249265Y CN U2008200584493 U CNU2008200584493 U CN U2008200584493U CN 200820058449 U CN200820058449 U CN 200820058449U CN 201249265 Y CN201249265 Y CN 201249265Y
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- continuous casting
- expansion device
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Abstract
A continuous cast slab end casting anti-pouring device resolves problems of low success ratio, high operation difficulty, high cost and insecurity of the existing continuous cast slab end casting anti-pouring device. The device comprises a main plate which is manufactured by a steel plate, a connecting handle is fixedly arranged on the main plate, the connecting handle is manufactured by steel, two ends of the main plate are respectively equipped with a pin downwardly, each pin and the main plate form an included angel alpha to further form a door-shaped insert, and the pins are produced by steel plates. After being inserted in the tail portion of the slab, the anti-pouring device can rapidly solidify and adhere with the casing of the slab, thereby supporting the casing of the slab, enabling the cooling influence of molten steel in the tail portion of the slab to be lowest, besides, avoiding affecting the original extraction operation procedure, overcoming the shortage that the existing 'capping' method needs to be operated under the power-off condition of a continuous caster, and increasing the operation ratio. The device has reliable anti-pouring effect, is safe and environment-friendly, is not harmful to the continuous caster, can be used in other techniques needing performing slab casing supporting, and has extremely strong suitability.
Description
Technical field
The utility model relates to a kind of sheet billet continuous casting foundry engieering, refers in particular to the device that a kind of continuous casting steel billet waters anti-surge eventually.
Background technology
Sheet billet continuous casting is the technical leap of process for producing steel and iron, and its advantage is generally acknowledged by metallurgical boundary.Sheet billet continuous casting has the recovery rate of iron height, and energy resource consumption is low, and slab quality is good, and mechanization, automaticity height, sheet billet continuous casting have become the requisite production technology of present iron and steel enterprise.Continuous casting is the process that a high temperature fluent metal changes solid-state slab into, especially when casting ending phase (watering eventually), abnormal accident appears easily, as surge, in case the surge accident occurs, little then online processing crystallizer, fan-shaped section greatly then must be changed crystallizer and fan-shaped section, both influence times, more equipment is damaged.
As shown in Figure 1, Fig. 1 is the schematic diagram of sheet billet continuous casting equipment, in the continuous casting casting cycle, molten steel enters crystallizer 3 coolings through ladle 1, tundish 2, generate definite shape and the inner initial stage base shell that contains molten steel, and constantly be pulled out to fan-shaped section 4, proceed the secondary cooling from crystallizer end opening 31, all solidify in the base shell until molten steel, form continuous casting steel billet.
When continuous casting waters eventually, owing to stopped replenishing of molten steel in the crystallizer 3, form an opening that makes progress, the cooled and solidified of the interior molten steel of base shell is shunk still and is being continued simultaneously.For sheet billet continuous casting, this contraction meeting forms the depression of deepening gradually in the opening of strand, make the base shell that appears lose ferrostatic pressure support and in intracardiac receipts, the cooling contraction that crystallizer 3 and secondary cooling simultaneously produces base shell surface aggravates base shell rear again and inwardly shrinks, cause wide corresponding base shell approaching to the width center line gradually, form " folder shell " form." folder shell " changes with the variation of flakiness ratio, liquid phase length of field, intensity of cooling, when " folder shell " amount of contraction surpasses the molten steel solidification amount of contraction, liquid molten steel is gone up by the extruding of two sides base shell, at this moment, only being placed in crystallizer 3 cooling waters is the liquid steel water coolings that can not in time extruding be gone up, liquid molten steel just overflows from base tail opening part (crystallizer end opening 31), forms the surge accident.The width of slab and thickness proportion are high more, and the probability that the surge accident takes place is also high more.
The molten steel that overflows constantly sticks in the casting machine fan-shaped section 4 of tail base pulling process, makes support deflector roll row (not shown) on the fan-shaped section 4 and cooling system undermined and can't ordinary production.Surge is huge for the injury of conticaster, and molten steel oozes out from the strand afterbody, is bonded in end opening 31 places of crystallizer 3, and enters into fan-shaped section 4 the insides, causes the support deflector roll row of fan-shaped section 4 normally to use.
At present, mainly be to take the mode of " shutoff "-" cooling material bind method " to this type of anti-surge accident in the industry, promptly, after each whole watering, strand afterbody in crystallizer 3 (being crystallizer end opening 31 places) inserts iron block, block the afterbody of base shell, the place, slit also must add an amount of nail bits around iron plate, if also there is the surge risk, just must suitably stop and fetch water, quicken the cooling of base shell, but, even do like this, the surge accident still often takes place, especially for the big conticaster of slab flakiness ratio.
The width of above-mentioned shutoff sections plate and length are to make according to the slab size of cast, each back of watering eventually selects suitable iron plate to insert according to the end face of cast slab, respectively insert one during insertion about the mouth of a river, the gap is sprinkled into an amount of nail bits again around iron plate.The success rate of this method is not high, especially at the big slab of cast width.There is long, defective such as success rate is low, task difficulty is big, cost is higher, labour intensity is big and safe coefficient is low of the time of binding in this method for capping, and can't solve base shell " folder shell " problem at all, and surge still exists.
Above-mentioned " cooling material bind method " is exactly to solidify lid and come " block up " firmly molten steel of possibility surge when molten steel goes up to form at tail base opening part before overflowing, prevent that with " blocking up " the molten steel surge from being the method for generally using at present, but the method with " blocking up " exists significantly not enough, especially molten steel continues solidification shrinkage after inserting iron plate, in the inner shrinkage cavity chamber that can generate high temperature of the strand of shutoff, cooling water during pulling is easy to enter cavity and rapid vaporized expanding, it is spouting to carry liquid molten steel simultaneously secretly, jeopardize the person and device security, abnormally dangerous.Adopt the conticaster of width-adjustable crystallizer in addition, must have the iron plate that adapts to various width, adaptability is low, the operation inconvenience.Once the gone into operation conticaster of a casting width 2300mm of Baosteel, find when flakiness ratio surpasses 7.0, it is special when thickness is 220mm, uses traditional method for capping obviously greater than the solidification shrinkage amount watering eventually in the period in the base shell receipts amount, water the surge rate eventually above 50%, molten steel repeatedly emits spray to threaten the safety of production and equipment, the molten steel surge makes large number quipments damage again, substantially exceeds repair and replacement speed, conticaster is in stops production and half end-of-life state.
The utility model content
The purpose of this utility model is in order to overcome the defective that above-mentioned prior art exists, provide a kind of operating structure simple, easy to operate, safe in utilization, reliable, effective, can adapt to various strand width, thickness, adapt to roller and be listed as the device that the continuous casting steel billet of using under the light depressed state waters anti-surge eventually.
The purpose of this utility model is achieved in that
A kind of continuous casting steel billet waters eventually to be prevented emitting expansion device, it is characterized in that by forming with lower member:
Mainboard is made by steel plate;
Fixedly install a connection handle on described mainboard, connection handle adopts steel to make;
The two ends of described mainboard are equipped with pin respectively downwards, and the angle between each pin and the described mainboard is α, form door font plug-in unit, and described pin is made by steel plate.
The beneficial effects of the utility model:
Anti-surge apparatus structure of the present utility model is simple, and cost is low, and practicality is big, and is safe in utilization, reliable and simple and easy.
Anti-can solidify adhesion rapidly with the base shell after emitting expansion device to insert the base shell with of the present utility model, cooling influence to molten steel in the tail base is minimum, in addition, do not influence original pulling flow chart (operating process is out of service without casting machine) yet, overcome existing " method binds " and must improve operating rate in the drawback of conticaster dead ship condition operation.This device has and prevents the surge effect reliably, and safety and environmental protection does not have injury to continuous casting installation for casting.
It is suitable equally that this device is gently depressed the technology continuous casting steel billet for employing, and result of use is reliable equally.Also can in needs carry out other technical process that the base shell supports, use, very strong adaptability is arranged.
For further specifying above-mentioned purpose of the present utility model, design feature and effect, the utility model is elaborated below with reference to accompanying drawing.
Description of drawings
Fig. 1 is the schematic diagram of sheet billet continuous casting equipment;
Fig. 2 A is that continuous casting steel billet of the present utility model waters the anti-structural representation that emits expansion device eventually;
Fig. 2 B is the anti-side view that emits expansion device of Fig. 2 A;
Fig. 2 C is the anti-vertical view that emits expansion device of Fig. 2 A;
Fig. 3 waters the anti-user mode schematic diagram that emits expansion device eventually for continuous casting steel billet of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of continuous casting steel billet of the present utility model being watered eventually the device of anti-surge is elaborated.
Referring to Fig. 2 A, 2B, 2C, Fig. 2 A is that continuous casting steel billet of the present utility model waters the anti-structural representation that emits expansion device eventually; Fig. 2 B is the anti-side view that emits expansion device of Fig. 2 A; Fig. 2 C is the anti-vertical view that emits expansion device of Fig. 2 A.As shown in the figure, continuous casting steel billet of the present utility model waters eventually and prevents emitting the structure of expansion device 10 to be:
Fixedly install a connection handle 12 above the mainboard 11, so that adopt the whole anti-expansion device 10 that emits of specific purpose tool handling, emit expansion device 10 for more convenient handling is anti-, fixedly install a connector 121 at the top of connection handle 12, connection handle 12 and connector 121 all adopt steel, and welding is fixing between mainboard 11, connection handle 12 and the connector.
The two ends of mainboard 11 are equipped with pin 13 respectively downwards, between each pin and the described mainboard angle α arranged, form a door font plug-in unit, form two pins 13 in the door font plug-in unit and can adopt steel plate respectively with mainboard 11 and be welded to each other fixingly, also can form with a block plate bending.
The anti-expansion device 10 that emits in the utility model is a kind of door font plug-in units of dredging type, referring to Fig. 3, Fig. 3 waters the anti-user mode schematic diagram that emits expansion device eventually for continuous casting steel billet of the present utility model, during use, tail base base shell 20 inboard insertions in molten steel when several are prevented emitting expansion device 10 to water along continuous casting is whole in the relevant position of 30 both sides, the mouth of a river link to each other with base shell 20 by the heat absorption realization.Insert the anti-quantity of emitting expansion device 10: the small size slab inserts 2, and the large scale slab inserts 4 or more.Pin 13 inserts the degree of depth of molten steel: make a font plug-in unit enter molten steel 2/3～3/4 place.
The utility model adopts brand-new " strutting method " device to substitute existing " method binds " device, difference with the prior art is to have changed the conventional method of carrying out afterbody " shutoff " with the cooling material, the appropriate time of this device after watering end eventually, to prevent emitting the door font plug-in unit of the type of dredging of expansion device 10 to be inserted in the casting blank shell 20 with the instrument of special use, base shell 20 is strutted, thereby prevent the natural characteristic of base shell 20 solidification shrinkage to greatest extent, make water the tail end peristome end and be open upwards (bottom lock) fully, fundamentally control the generation of surge, significantly reduce the incidence of accident.
Because the steel grade difference of strand, poring rate is different different with the cooling degree, the thickness of the base shell 20 that forms in crystallizer 3 as shown in Figure 1 when watering eventually can be variant, for adapting to this variation, between anti-two pins 13 that emit expansion device 10 and the mainboard 11 an angle α should be arranged, require the degree of depth certain simultaneously to being supported with of base shell 20, the length H of pin 13 is the bigger the better in theory, and the angle of angle α is the smaller the better, but pin 13 oversize can increasing recept the caloric, and are unfavorable for the cooling of contraction naturally of tail base.Take into account the requirement of two aspects, the angle α between pin 13 and the mainboard 11 is at 80 °～85 °, and the length H of pin 13 is more suitable in 140mm～180mm scope.The door font plug-in unit of dredging type is by the support of pin 13 realizations to base shell 20, though it is very thin to water initial strand end base shell eventually, convergent force is little, but must consider inserting the intensity of molten steel heat absorption back under hot, test the steel plate thickness that shows mainboard 11, pin 13 employings and be advisable at 7mm～8mm, width D can satisfy requirement of strength at 50mm～60mm.
30 both sides, the mouth of a river crystallizer 3 in are respectively inserted several and are prevented emitting expansion device 10 immediately after each molten steel waters eventually, carry out the slab pulling immediately, this method success rate height, advantage such as simple to operate, that task difficulty is low, reduce cost.
The width L of mainboard 11 must accomplish to water various ends (comprising unusual whole watering) can both successfully be made it to insert in the base shell molten steel, adjusts the width L of mainboard 11, and the sheet billet continuous casting that can adapt to different-thickness uses needs.
Can solidify adhesion rapidly with base shell 20 after preventing emitting expansion device 10 to insert base shells 20, cooling influence to molten steel in the tail base is minimum, in addition, do not influence original pulling flow chart (operating process is out of service without casting machine) yet, overcome " method binds " and must improve operating rate in the drawback of conticaster dead ship condition operation.This device of evidence has and prevents the surge effect reliably, and safety and environmental protection does not have injury to continuous casting installation for casting.
It is suitable equally that this device is gently depressed the technology continuous casting steel billet for employing, and result of use is reliable equally.Also can in needs carry out other technical process that the base shell supports, use, very strong adaptability is arranged.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the purpose of this utility model, and be not with opposing qualification of the present utility model, as long as in essential scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the above embodiment.
Claims (9)
1, a kind of continuous casting steel billet waters eventually and prevents emitting expansion device, it is characterized in that by forming with lower member: mainboard, make by steel plate;
Fixedly install a connection handle on described mainboard, connection handle adopts steel to make;
The two ends of described mainboard are equipped with pin respectively downwards, and an angle α is arranged between each pin and the described mainboard, form door font plug-in unit, and described pin is made by steel plate.
2, continuous casting steel billet as claimed in claim 1 waters eventually and prevents emitting expansion device, it is characterized in that: fixedly install a connector at the top of described connection handle.
3, continuous casting steel billet as claimed in claim 2 waters eventually and prevents emitting expansion device, it is characterized in that: described connector adopts steel to make and fix with described connection handle welding.
4, continuous casting steel billet as claimed in claim 1 waters eventually and anti-ly emits expansion device, it is characterized in that: two pins and the mainboard that form in described the font plug-in unit adopt steel plate respectively and are welded to each other fixing.
5, continuous casting steel billet as claimed in claim 1 waters eventually and anti-ly emits expansion device, it is characterized in that: two pins and the mainboard that form in described the font plug-in unit form with a block plate bending.
6, continuous casting steel billet as claimed in claim 1 waters eventually and prevents emitting expansion device, and it is characterized in that: the angle α between described pin and the described mainboard is 80 °～85 °.
7, continuous casting steel billet as claimed in claim 1 waters eventually and prevents emitting expansion device, and it is characterized in that: the length H of described pin is 140mm～180mm.
8, continuous casting steel billet as claimed in claim 1 waters eventually and prevents emitting expansion device, and it is characterized in that: the steel plate thickness that described mainboard and pin adopt is 7mm～8mm.
9, continuous casting steel billet as claimed in claim 1 waters eventually and prevents emitting expansion device, and it is characterized in that: the steel plate width D that described mainboard and pin adopt is 50mm～60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200584493U CN201249265Y (en) | 2008-05-15 | 2008-05-15 | Continuous cast slab end casting anti-pouring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200584493U CN201249265Y (en) | 2008-05-15 | 2008-05-15 | Continuous cast slab end casting anti-pouring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201249265Y true CN201249265Y (en) | 2009-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200584493U Expired - Fee Related CN201249265Y (en) | 2008-05-15 | 2008-05-15 | Continuous cast slab end casting anti-pouring device |
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| CN (1) | CN201249265Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620546A (en) * | 2017-03-24 | 2018-10-09 | 宝山钢铁股份有限公司 | A kind of insert arrangement and its application method preventing continuous casting billet tail base surge |
| CN110976833A (en) * | 2019-11-20 | 2020-04-10 | 河钢乐亭钢铁有限公司 | Quick-change cooling device and quick-change process for large-shrinkage steel grade hot tundish |
| CN112387946A (en) * | 2020-11-17 | 2021-02-23 | 山东莱钢永锋钢铁有限公司 | Device and method for continuous casting of small square billets |
| CN114535528A (en) * | 2022-03-08 | 2022-05-27 | 宝钢湛江钢铁有限公司 | Technological method for preventing bulging of plate blank continuous casting final pouring |
-
2008
- 2008-05-15 CN CNU2008200584493U patent/CN201249265Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108620546A (en) * | 2017-03-24 | 2018-10-09 | 宝山钢铁股份有限公司 | A kind of insert arrangement and its application method preventing continuous casting billet tail base surge |
| CN108620546B (en) * | 2017-03-24 | 2020-03-06 | 宝山钢铁股份有限公司 | Plug-in device for preventing continuous casting billet tail billet from rising and using method thereof |
| CN110976833A (en) * | 2019-11-20 | 2020-04-10 | 河钢乐亭钢铁有限公司 | Quick-change cooling device and quick-change process for large-shrinkage steel grade hot tundish |
| CN112387946A (en) * | 2020-11-17 | 2021-02-23 | 山东莱钢永锋钢铁有限公司 | Device and method for continuous casting of small square billets |
| CN114535528A (en) * | 2022-03-08 | 2022-05-27 | 宝钢湛江钢铁有限公司 | Technological method for preventing bulging of plate blank continuous casting final pouring |
| CN114535528B (en) * | 2022-03-08 | 2024-02-27 | 宝钢湛江钢铁有限公司 | Process method for preventing plate blank continuous casting final casting from rising |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20160515 |