CN203018741U - Water-gap slag line erosion resisting device - Google Patents
Water-gap slag line erosion resisting device Download PDFInfo
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- CN203018741U CN203018741U CN 201320008987 CN201320008987U CN203018741U CN 203018741 U CN203018741 U CN 203018741U CN 201320008987 CN201320008987 CN 201320008987 CN 201320008987 U CN201320008987 U CN 201320008987U CN 203018741 U CN203018741 U CN 203018741U
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- slag line
- horizontal
- clamper
- river
- horizontal clamper
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Abstract
The utility model discloses a water-gap slag line erosion resisting device, and belongs to the field of continuous casting water-gap manufacturing. A vertical elevating rack of the device is connected with a horizontal clamper; the height of the horizontal clamper is adjusted through the vertical elevating rack; the horizontal clamper comprises a horizontal support rod and a moving ring; one end of the horizontal clamper is connected with the elevating rack; the other end of the horizontal clamper is connected with the moving ring; the moving ring is sleeved outside an erosion-resisting protection cylinder in a surrounding manner, and is fastened by using a bolt lock; the erosion-resisting protection cylinder consists of two coherent symmetric half-cylinders; a half-ring ventilation inner loop is arranged at the upper part inside the half-cylinders; a gas outlet for blowing argon is formed in the ventilation inner loop; and an angular boss is arranged outside the half-cylinders.
Description
Technical field
The utility model belongs to the Application in manufacture field of continuous casting mouth, particularly relates to
A kind of water-fast mouthful of slag line erosion device and the method for pouring into a mould with its protection are applicable to the anti-corrosion protection of steel plant's continous casting sprue.
Background technology
The core of high efficiency continuous casting is to connect to water at height to produce high-quality defect free slab under rate, high pulling rate, but height connects the rate of watering, high pulling rate needs the high-quality mouth of a river to guarantee the direct motion of casting.Each factory mouth of a river (long nozzle or submersed nozzle) slag lining corrodes seriously at present, needs to change online.In casting process, mouth of a river slag lining directly contacts with the covering slag molten slag layer, under hot conditions, and covering slag and mouth of a river refractory material generation chemical reaction, under certain liquid fluctuating souring, more much bigger than the erosion at other positions, the mouth of a river simultaneously.
Reducing the anti-material erosion in the mouth of a river, improve mouth of a river life-span aspect, a lot of methods have been proposed, comprising: 1) improving mouth of a river material is the method for slowing down mouth of a river slag line erosion of commonly using, ZrO
2Dissolving in silicate melt is than general oxide material such as Al
2O
3Deng much smaller, so the slag lining employing contains ZrO
2Material has slag resistance preferably.The stability of zirconic chemistry and physics better, be good slag line raw material, but its expansion rate is higher, and content is too high easily to be burst; The graphite difficulty is infiltrated by molten steel, and chemical stability is good, and thermal coefficient of expansion is low, and shortcoming is easily oxidized, and both rational proportion can be produced corrosion resistant material preferably.Many people have also made extensive work from the aspects such as use of grain size proportion, additive, bond, Ultramicro-powder, use silica flour, carborundum, boron carbide and boron nitride etc. as additive, but so far there are no refractory material that good especially anti-slag line corrodes.2) chemical composition of covering slag and silicate melt approach and remove, and contain outside a small amount of carbon, also have Na
2O, CaF
2Deng additive.Especially fluorine-containing in slag, the mouth of a river is corroded serious.The production practices that the Baosteel covering slag corrodes submersed nozzle show; green diameter is the mouth of a river of 90mm; the diameter that measures after erosion is respectively the floride-free slag of 70mm() and the fluorine-containing slag of 78mm(); erosion rate to mouth of a river slag lining after the covering slag fluoride-free is down to 13% left and right by 22%; to the service life of improving the mouth of a river certain effect being arranged, but still have the erosion of 10mm left and right.3) there is the people to paste one layer of heat preservation at the submersed nozzle outer surface cotton, also there is the people to improve service life to submersed nozzle outer wall spraying high temperature corrosion resistance coating, but many aspects such as both material characters, mouth of a river processing have difficulties, and cost is higher, and anti-slag line erosion effect is not obvious.4) also have the people to extend mouth of a river service life by increasing thickness of SEN, but cost increases, and do not solve from root the problem that slag line corrodes.5) someone proposes a kind of electrodynamic type dynamic adjustment slag line system, according to mouth of a river erosion condition, improve little height by the tundish lift, raising submersed nozzle position, extend the mouth of a river life-span, but this larger adjustment is solidified molten steel in mold and is exerted an influence, and may cause velocity field and the larger variation of temperature field generation in crystallizer, the direct motion of impact casting and the quality of strand.
From above-mentioned analysis as can be known, there is serious erosion problem in the continous casting sprue slag lining at present, and the mouth of a river needs regularly to change, the operating procedure trouble.Especially submersed nozzle occupies larger specific gravity on the refractory for continuous casting expense, and the erosion of anti-material makes the continuous casting cost up.
Summary of the invention
The purpose of this utility model is to have serious erosion problem for prior art continous casting sprue slag lining, the mouth of a river needs regularly to change, the operating procedure trouble, especially submersed nozzle occupies larger specific gravity at continuous casting on anti-refractory material expense, the erosion of anti-material makes many deficiencies such as continuous casting cost up, a kind of water-fast mouthful of device that slag line corrodes is provided
Realize that above-mentioned purpose is by the following technical solutions:
A kind of water-fast mouthful of slag line erosion device, described device mainly is comprised of vertical lift frame, horizontal clamper, argon gas pipeline, anti-corrosion casing,
A. described vertical lift frame is connected with horizontal clamper, adjusts the height of horizontal clamper by the vertical lift frame;
B. described horizontal clamper is comprised of horizontal support bar and active ring, and horizontal support bar one end is connected with crane, and the other end is connected with active ring, and the active ring suit is encircled outside anti-corrosion casing, is tightened by bolts solid;
C. described anti-corrosion casing is the symmetrical semicircular cylinder of two driving fits, and the top in semicircular cylinder is provided with circuit in the half-turn ventilation, and in ventilation, circuit is provided with the venthole of blowing argon gas, and the semicircular cylinder outside is provided with the dihedral boss;
D. described tunger tube route supply air line, triple valve consist of, and triple valve one terminates on outside argon gas pipeline, and two outlets of the other end are inserted respectively in the ventilation of two semicircular cylinders of anti-corrosion casing in circuit.
As preferred version, described vertical lift frame and horizontal clamper are slidably connected.
As preferred version, described active ring is comprised of two semicircular ring.
As preferred version, the other end of the horizontal support bar of described horizontal clamper is equipped with the fork-shaped movable handle, two arm ends of fork-shaped movable handle are equipped with respectively movable axis, article two, movable axis connects respectively semicircular ring, article two, the tail end correspondence of semicircular ring has the lockhole of construction bolt lock use, is furnished with the bolt lock that is made of screw bolt and nut in lockhole.
As preferred version, the form fit at the shape of described anti-corrosion casing bottom and the steel billet mouth of a river, square or the oval or combined shaped for cylindrical shape.
As preferred version, the described steel billet mouth of a river comprises long nozzle and submersed nozzle.
As preferred version, in described ventilation, circuit is provided with the venthole of 6 ~ 10 inside blowing argon gas.
Adopt technique scheme, compared with prior art, remarkable advantage of the present utility model is:
1) reduced mouth of a river usage quantity.The erosion of anti-corrosion device has replaced the erosion at the mouth of a river, and an anti-corrosion casing can use continuously, is equivalent to the slag line section at the many mouths of a river, has greatly saved the use at the mouth of a river, has reduced the cost of anti-the material;
2) saved the outlet replacing time.After using the new type corrosion resistant device, saved and repeatedly changed online the time at the mouth of a river, and anti-corrosion device is easy to adjust, quick, be conducive to the suitable of continuous casting and water;
3) stablized the anti-material temperature in the mouth of a river.On the one hand the parcel of anti-corrosion casing has stoped scattering and disappearing of mouth of a river heat, and the hot argon gas that is blown in the interlayer has on the other hand heated mouth of a river outer wall, thereby has stablized mouth of a river temperature, and anti-waterstop port internal junction knurl is highly profitable;
4) improved the casting blank solidification quality.Adopting after anti-corrosion device can " zero changes the mouth of a river ", makes tundish or crystallizer flow field stability improve, and has reduced the fluctuation of free surface, has improved the casting blank solidification quality.
The utility model proposes that not only operating procedure is simple and practical, solved mouth of a river slag line and corroded serious problem, and reduced the financial cost of the anti-material of continuous casting, improved slab quality.Be particularly useful for the anti-erosion technical measures upgrading of existing steel plant continous casting sprue protection and transformation.
Description of drawings
Fig. 1 is the structural representation of facing of the present utility model.
Fig. 2 is side-looking structural representation of the present utility model.
Fig. 3 is the utility model argon tube sealing road schematic diagram, is also the partial enlarged drawing of Fig. 2.
Fig. 4 is the utility model tundish long nozzle protection cast schematic diagram.
Fig. 5 is the utility model crystallizer submersed nozzle protection cast schematic diagram.
Fig. 6 is package assembly schematic diagram of the present utility model.
In figure, vertical lift frame 1, horizontal clamper 2, tunger tube 3, bolt lock 4, anti-corrosion casing 5, argon gas entrance 6; triple valve 7, circuit 8 in ventilation, venthole 9, fork-shaped handle 10, movable axis 11, semicircular ring 12; long nozzle 13, covering slag 14, molten steel 15, tundish 16, submersed nozzle 17, crystallizer 18.
The specific embodiment
The utility model is disclosed is a kind of water-fast mouthful of slag line erosion device, and specific embodiment is as follows:
Water-fast mouthful of slag line erosion device embodiment
Embodiment 1
See Fig. 1-Fig. 6, water-fast mouthful of slag line erosion device, formed by motor-driven vertical lift frame, horizontal clamper, argon gas pipeline, anti-corrosion casing, the support body of vertical lift frame 1 is tubular structure, one end and frame holder welding, stand on ground, the upper end of vertical lift frame 1 is equipped with gear, by the lifting of gear adjusting vertical lifting frame 1.Horizontal clamper 2 is comprised of horizontal support bar and active ring, horizontal support bar one end and vertical lift frame 1 are slidably connected by gear, the other end of horizontal support bar is equipped with fork-shaped movable handle 10, two arm ends of fork-shaped movable handle 10 are equipped with respectively 11, two movable axis 11 of movable axis and connect respectively semicircular ring 12; The other end correspondence of two semicircular ring 12 has the lockhole of construction bolt lock 4 use, and bolt lock 4 is comprised of screw bolt and nut.Two semicircular ring are encircled outside anti-corrosion casing 5, and are fastening with bolt lock 4.Adjust the height of horizontal clamper 2 by the gear jacking system of vertical lift frame 1.
But anti-corrosion casing 5 is comprised of the symmetrical semicircular cylinder of two driving fits, the suit environmental protection is on the mouth of a river, be provided with circuit 8 in the half-turn ventilation in top refractory material in semicircular cylinder, interior circuit 8 is provided with the venthole 9 of 6 ~ 10 inside blowing argon gas, and the semicircular cylinder outside is provided with the dihedral boss; The fine and close ZrO of anti-corrosion casing 5
2Material is made, the shape of semicircular cylinder bottom and the form fit at the mouth of a river, square or the oval and combined shaped for cylindrical shape.
Tunger tube route supply air line 6, triple valve 7 consists of, and triple valve 7 one terminates on outside argon gas pipeline 6, and two outlets of the other end are inserted respectively in the ventilation of two semicircular cylinders of anti-corrosion casing 5 in circuit 8.
Protect the method for pour steel with the water-fast mouthful of slag line erosion device of the present embodiment
See Fig. 6, with water-fast mouthful slag line erosion device respectively frame be contained in the outside of long nozzle 13 and submersed nozzle 17, insert in crystallizer 13 bottom of submersed nozzle 10, and the top of submersed nozzle 17 communicates with tundish 14, and insert in tundish 16 bottom of long nozzle 15.
Concrete operation step is as follows:
Hang.Before tundish 16 is opened and watered, open the bolt lock 4 of horizontal clamper 2, two semicircle casings are hung on two semicircular ring of horizontal clamper 2; Adjust the position of argon gas pipeline 3 triple valves 7,7 two outlets of triple valve respectively with the ventilation of anti-corrosion casing 5 in circuit 8 closely connect.
Centering.Vertical lift frame 1 is placed in submersed nozzle 17 other, adjusts the length of horizontal clamper 2, make two semicircle casings opening over against the center of submersed nozzle 17.
Obvolvent.After centering submersed nozzle 17, two anti-corrosion casings of semicircle are combined, circle is lived submersed nozzle 17, and the lock 4 of bolting on makes the active ring of horizontal clamper 2 tightly embrace anti-corrosion casing 5.
The argon envelope.Open argon gas pipeline 3, pass into the hot argon gas of 1300 ℃, hot argon gas is with the 1.2L/min flow, and circuit 8 in the ventilation of flow through triple valve 7 and anti-corrosion casing 5 blows out from venthole 9; Form stable argon gas ring, the blocking-up air infiltrates along the gap, plays sealing function.
The location.According to slag line position, the mouth of a river, adjust vertical lift frame 1, anti-corrosion casing 5 is inserted in tundish 16 and crystallizer 18, make the lower end of anti-corrosion casing 5 lower than the slag line lower limit, be submerged in molten steel 15; Pour into a mould after 6 hours, anti-corrosion casing 5 corrodes darker, improves anti-corrosion casing 5 height 35mm by adjusting vertical lift frame 1; change and corrode the position, continue pour steel 15, after tundish 16 is opened and watered; according to the slag line that forms after covering slag 14 fusings, finely tune the height of anti-corrosion casing 5.
Transposition.After the cast certain hour, anti-corrosion casing 5 corrodes to a certain extent, promotes anti-corrosion casing 5 one segment distances by vertical lift frame 1, adjusts the position that covering slag 14 corrodes, and continues pour steel 15; After anti-corrosion casing 5 corrodes to a certain extent, again promote a segment distance, so repeatedly carry out.
Embodiment 1
See Fig. 4, made the anti-corrosion casing 5 that is applicable to long nozzle in tundish, the upper and lower of anti-corrosion casing 5 is cylindrical, barrel bore 90mm, and wall thickness 12mm, long 230mm, material is ZrO
2-C matter, ZrO
2Content 70～80%, C content 12～17%, all the other are a small amount of phenolic resins, carborundum, boron carbide etc., technical indicator is apparent porosity 17%, bulk density 3.62g/cm
3, compressive resistance 24MPa, rupture strength 7MPa.
Before ladle is opened and watered, open the bolt lock 4 of horizontal clamper 2, two semicircle casings are hung on two plate annulus of horizontal clamper 2; Vertical lift frame 1 is placed in long nozzle 13 other, adjusts horizontal clamper 2 length, after centering long nozzle 13, two semicircle casings are combined, the lock 4 of bolting on; Open the hot argon gas of 3,1300 ℃ of argon gas pipelines, with the 1.2L/min flow, circuit 8 in flow through triple valve 7 and ventilation blows out from venthole 9; According to the position of long nozzle covering slag 14, anti-corrosion casing 5 is inserted in tundish 16; Pour into a mould after 5 hours, anti-corrosion casing 5 corrodes darker, improves anti-corrosion casing height 36mm by vertical lift frame 1, changes and corrodes the position, continues pour steel 15, and the tundish long nozzle life-span improves greatly.
See Fig. 5, made the anti-corrosion casing 5 of the submersed nozzle 17 that is applicable to billet continuous casting, the upper and lower is cylindrical, barrel bore 90mm, and wall thickness 12mm, long 200mm, material is ZrO
2-C matter, ZrO
2Content 70～80%, C content 12～17%, all the other are a small amount of phenolic resins, carborundum, boron carbide etc., technical indicator is apparent porosity 15%, bulk density 3.55g/cm
3, compressive resistance 25MPa, rupture strength 8MPa.
Before tundish 16 is opened and watered, open the bolt lock 4 of horizontal clamper 2, two semicircle casings are hung on two semicircular ring of horizontal clamper 2; Vertical lift frame 1 is placed in submersed nozzle 17 other, adjusts horizontal clamper 2 length, after centering submersed nozzle 17, two semicircle casings are combined, the lock 4 of bolting on; Open the hot argon gas of 3,1300 ℃ of argon gas pipelines,, blow out from venthole 9 from argon gas entrance 6 circuit 8 in triple valve 7 and ventilation of flowing through with the 1.2L/min flow; According to mouth of a river slag line 14 positions, anti-corrosion casing 5 is inserted in crystallizer 18; Pour into a mould after 6 hours, anti-corrosion casing 5 corrodes darker, improves anti-corrosion casing 5 height 35mm by vertical lift frame 1, changes and corrodes the position, continues pour steel 15, and 17 life-spans of submersed nozzle improve greatly.
Making is applicable to the anti-corrosion casing of rectangular bloom submersed nozzle, and top is cylindrical, and the bottom is oblate, cylinder top internal diameter 72mm, and wall thickness 12mm, long 130mm, lower curved internal diameter 85mm, flat width 60mm, wall thickness 12mm, long 170mm, material is ZrO
2-C matter, ZrO
2Content 70～80%, C content 12～17%, all the other are a small amount of phenolic resins, carborundum, boron carbide etc., technical indicator is apparent porosity 17%, bulk density 3.62g/cm
3, compressive resistance 24MPa, rupture strength 7MPa.
Before tundish 16 is opened and watered, open the bolt lock 4 of horizontal clamper 2, two semicircle casings are hung on two semicircular ring of horizontal clamper 2; Vertical lift frame 1 is placed in submersed nozzle 17 other, adjusts horizontal clamper 2 length, after centering submersed nozzle 17, two semicircle casings are combined, the lock 4 of bolting on; Open the hot argon gas of 3,1300 ℃ of argon gas pipelines,, blow out from venthole 9 by argon gas entrance 6 circuit 8 in triple valve 7 and ventilation of flowing through with the 1.2L/min flow; According to mouth of a river slag line 14 positions, anti-corrosion casing 5 is inserted in crystallizer 18; Pour into a mould after 5.5 hours, anti-corrosion casing 5 corrodes darker, improves anti-corrosion casing height 40mm by vertical lift frame 1, changes and corrodes the position, continues pour steel 15, and the submersed nozzle life-span improves greatly.
Claims (7)
1. water-fast mouthful of slag line erosion device, is characterized in that, described device mainly is comprised of vertical lift frame, horizontal clamper, argon gas pipeline, anti-corrosion casing,
A. described vertical lift frame is connected with horizontal clamper, adjusts the height of horizontal clamper by the vertical lift frame;
B. described horizontal clamper is comprised of horizontal support bar and active ring, and horizontal support bar one end is connected with crane, and the other end is connected with active ring, and the active ring suit is encircled outside anti-corrosion casing, is tightened by bolts solid;
C. described anti-corrosion casing is comprised of the semicircular cylinder that is two symmetrical driving fits, and the top in semicircular cylinder is provided with circuit in the half-turn ventilation, and in ventilation, circuit is provided with the venthole of blowing argon gas, and the semicircular cylinder outside is provided with the dihedral boss;
D. described tunger tube route supply air line, triple valve consist of, and triple valve one terminates on outside argon gas pipeline, and two outlets of the other end are inserted respectively in the ventilation of two semicircular cylinders of anti-corrosion casing in circuit.
2. require 1 described water-fast mouthful of slag line erosion device according to profit, it is characterized in that, described vertical lift frame and horizontal clamper are slidably connected.
3. require 1 described water-fast mouthful of slag line erosion device according to profit, it is characterized in that, described active ring is comprised of two semicircular ring.
4. require 1 described water-fast mouthful of slag line erosion device according to profit, it is characterized in that, the other end of the horizontal support bar of described horizontal clamper is equipped with the fork-shaped movable handle, two arm ends of fork-shaped movable handle are equipped with respectively movable axis, article two, movable axis connects respectively semicircular ring, article two, the tail end correspondence of semicircular ring has the lockhole of construction bolt lock use, is furnished with the bolt lock that is made of screw bolt and nut in lockhole.
5. require 1 described water-fast mouthful slag line erosion device according to profit, it is characterized in that, the form fit at the shape of described anti-corrosion casing bottom and the steel billet mouth of a river is cylindrical shape or square or ellipsoidal structure.
6. require 5 described water-fast mouthful slag line erosion devices according to profit, it is characterized in that, the described steel billet mouth of a river comprises long nozzle and submersed nozzle.
7. require 1 described water-fast mouthful of slag line erosion device according to profit, it is characterized in that, in described ventilation, circuit is provided with the venthole of 6 ~ 10 inside blowing argon gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008987 CN203018741U (en) | 2013-01-09 | 2013-01-09 | Water-gap slag line erosion resisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008987 CN203018741U (en) | 2013-01-09 | 2013-01-09 | Water-gap slag line erosion resisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203018741U true CN203018741U (en) | 2013-06-26 |
Family
ID=48642755
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008987 Expired - Fee Related CN203018741U (en) | 2013-01-09 | 2013-01-09 | Water-gap slag line erosion resisting device |
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| Country | Link |
|---|---|
| CN (1) | CN203018741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008588A (en) * | 2013-01-09 | 2013-04-03 | 河北联合大学 | Nozzle slag line erosion resistant device and method for protecting pouring by using same |
-
2013
- 2013-01-09 CN CN 201320008987 patent/CN203018741U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008588A (en) * | 2013-01-09 | 2013-04-03 | 河北联合大学 | Nozzle slag line erosion resistant device and method for protecting pouring by using same |
| CN103008588B (en) * | 2013-01-09 | 2014-12-10 | 河北联合大学 | Nozzle slag line erosion resistant device and method for protecting pouring by using same |
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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 |
Granted publication date: 20130626 Termination date: 20150109 |
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| EXPY | Termination of patent right or utility model |