CN203764919U - Swing groove for light and thin continuous casting tundish - Google Patents
Swing groove for light and thin continuous casting tundish Download PDFInfo
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- CN203764919U CN203764919U CN201420075358.6U CN201420075358U CN203764919U CN 203764919 U CN203764919 U CN 203764919U CN 201420075358 U CN201420075358 U CN 201420075358U CN 203764919 U CN203764919 U CN 203764919U
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Abstract
The utility model discloses a swing groove for a light and thin continuous casting tundish. The swing groove comprises a semi cylindrical housing, an end face baffle and a fireproofing material inner layer, wherein the end face baffle is fixedly arranged at one end of the semi cylindrical housing and seals one end of the semi cylindrical housing; the fireproofing material inner layer is arranged on the whole inner wall face of the semi cylindrical housing and has an increasingly increased thickness from the edge to the center. The swing groove is simple in structure and low in consumption of used material, can effectively save material cost, reduces the weight of the swing groove, better prolongs the service life, and realizes excellent technical effects.
Description
Technical field
The utility model belongs to steelmaking technical field, more particularly, relates to the swing-groove for continuous casting tundish in continuous casting metering nozzle pouring technology.
Background technology
Continuous small-billet casting generally adopts metering nozzle pouring technology, because metering nozzle can not effectively be controlled molten steel beam, conventionally carrys out the molten steel amount in crystallization control device with pendulum slot device.Open and water when starting at continuous casting, general adopt pendulum groove repeatedly the mode of drainage reduce the molten steel influx in crystallizer, to guarantee fully solidifying of strand in crystallizer, and with dummy bar head strong bonded.If there is the accident such as bleed-out, excessive steel in casting process time, pendulum groove can be put to the steel side of flowing down, allow molten steel flow in slag basin through pendulum slot device, avoid molten steel to water the injury that crystallizer cover plate causes device damage or operating personnel.
Traditional pendulum slot device adopts Plate Welding grooving shape framework, chamber pours into certain thickness castable or builds pendulum groove brick by laying bricks or stones therein again, use is just damaged once or several times conventionally in production and application process, to put slot device, and its damage type is mainly that been provided with internal refractories is damaged and is forced to roll off the production line.Because continuous casting pendulum groove is wear-and-tear parts, a lot of enterprises have all adopted diverse ways to reduce material consumption, as adopt steel mill's waste refractory materials to make pendulum groove, although the method can reduce pendulum groove production cost preferably, but the quantity consumed of pendulum groove fails effectively to reduce, and the service life of each pendulum groove is still very low; And for example adopt combined type pendulum groove, the part device damaging by replacing reaches and improves the pendulum groove object in service life, but the pendulum groove in actual production is subject to the impact of molten steel with gap, variations in temperature is very large, the casing deformation of pendulum groove is larger, there is gap in the pendulum groove junction of section displacing, thereby has larger potential safety hazard.
Utility model content
For deficiency of the prior art, one or more during the purpose of this utility model is to solve the problems of the technologies described above.
The purpose of this utility model is to provide one can save material cost, alleviates pendulum groove weight, the light and thin type swing-groove for continuous casting tundish that can increase the service life again.
To achieve these goals, the utility model provides a kind of light and thin type swing-groove for continuous casting tundish, described pendulum groove comprises semi-cylindrical shaped shell, end face baffle plate and refractory material internal layer, described end face baffle plate is arranged on regularly one end of described semi-cylindrical shaped shell and seals one end of described semi-cylindrical shaped shell, described refractory material internal layer is arranged on the whole internal face of described semi-cylindrical shaped shell, and described refractory material internal layer has the progressive thickness being increased gradually to centre by edge.
According to light and thin type swing-groove for continuous casting tundish of the present utility model embodiment, described pendulum groove also comprises anticracking metal mesh sheet, and described anticracking metal mesh sheet is arranged at centre and the close described end face baffle plate of described refractory material internal layer.
According to light and thin type swing-groove for continuous casting tundish of the present utility model embodiment, the external diameter of described semi-cylindrical shaped shell is that 250～325mm, wall thickness are that 3～6mm, length are 2～25m.
According to light and thin type swing-groove for continuous casting tundish of the present utility model embodiment, the edge thickness of described refractory material internal layer is 1～3mm, and the centre thickness of described refractory material internal layer is 16～20mm.
According to light and thin type swing-groove for continuous casting tundish of the present utility model embodiment, the length of described anticracking metal mesh sheet is 300～500mm.
Light and thin type swing-groove for continuous casting tundish of the present utility model is simple in structure, uses consumption of materials low, can effectively save material cost, alleviate pendulum groove weight, can increase the service life preferably again, has obtained good technique effect.
Brief description of the drawings
Fig. 1 is the main TV structure schematic diagram of the light and thin type swing-groove for continuous casting tundish of the utility model exemplary embodiment.
Fig. 2 is the plan structure schematic diagram of the light and thin type swing-groove for continuous casting tundish of the utility model exemplary embodiment.
Description of reference numerals:
1-semi-cylindrical shaped shell, 2-end face baffle plate, 3-refractory material internal layer, 4-anticracking metal mesh sheet.
Detailed description of the invention
Hereinafter, describe with reference to the accompanying drawings exemplary embodiment of the present utility model in detail.
Fig. 1 is the main TV structure schematic diagram of the light and thin type swing-groove for continuous casting tundish of the utility model exemplary embodiment, and Fig. 2 is the plan structure schematic diagram of the light and thin type swing-groove for continuous casting tundish of the utility model exemplary embodiment.
As depicted in figs. 1 and 2, according to exemplary embodiment of the present utility model, described light and thin type swing-groove for continuous casting tundish comprises semi-cylindrical shaped shell 1, end face baffle plate 2 and refractory material internal layer 3.
Wherein, pendulum groove shell is as the critical piece of accepting and shift molten iron, and it should have enough intensity and capacity, and its width and length must meet continuous casting process requirement, and its wall thickness should be guaranteed intensity.Existing pendulum groove shell mostly adopts rectangle or dovetail groove, and because arc-shaped slot has less sectional area compared with rectangle or dovetail groove, therefore can save steel, weight reduction, therefore the utility model selects semi-cylindrical shaped shell 1 as pendulum groove shell.Preferably, selection external diameter be 250～325mm, wall thickness be 3～6mm, the length normal carbon welded still pipe that is 2～25m or seamless steel pipe to the semi-cylindrical shaped steel pipe that cuts open rear gained as semi-cylindrical shaped shell 1 of the present utility model, to reduce weight and the production cost of pendulum groove, but the utility model is not limited to this.
The molten steel that must limit in pendulum groove due to pendulum groove flows towards a direction, therefore one end of pendulum groove should seal and stop molten steel to flow out, the utility model also comprises end face baffle plate 2, and this end face baffle plate 2 is arranged on regularly one end of semi-cylindrical shaped shell 1 and seals one end of this semi-cylindrical shaped shell 1.Particularly, it is that the steel plate of 3～6mm cuts into semicircle and is welded on an end face of semi-cylindrical shaped shell 1 that the utility model is selected thickness, but the utility model is not limited to this.
Wherein, refractory material internal layer 3 is arranged on the whole internal face of semi-cylindrical shaped shell 1, and refractory material internal layer 3 has the progressive thickness being increased gradually to centre by edge.In order to extend the service life of pendulum groove, conventionally need in pendulum groove, refractory components be set, in prior art, conventionally adopt castable or build pendulum groove brick by laying bricks or stones, but molten steel and castable or build pendulum groove brick by laying bricks or stones bonding occurs is one of pendulum groove life reason on the low side, if use refractory brick material, in the time clearing up the residual steel boning on refractory brick, be easy to damage brick body, and the bad repairing of damaged location.Therefore, the utility model adopts aluminium matter castable and magnesia to mix and ties a knot to be shaped and forms refractory material internal layer 3, even if molten steel bonding is damaged local knotting layer, after the compound that also need only form in damage location partial smearing, can normally use, increased substantially the service life of putting groove.Preferably, in the described refractory material being mixed by aluminium matter castable and magnesia, Al
2o
3proportioning be 25～45%, the proportioning of MgO is 55～75%.
From economic angle, the thickness of the attenuate refractory material internal layer of should trying one's best, but from the angle of safety, the thickness of refractory material internal layer should suitably thicken.Because the pendulum groove center position (or pendulum trench bottom) except guiding MOLTEN STEEL FLOW must be born the high temperature of molten steel, the radiant heat of molten steel is mainly born at pendulum groove edge position (or pendulum groove top), therefore the progressive thickness that the utility model becomes to be increased gradually to centre by edge by the Thickness Design of the refractory material internal layer 3 in pendulum groove, be that the thickness of refractory material internal layer 3 is from the top of pendulum groove to the bottom progressive additive of putting groove, both saved material cost, alleviate again pendulum groove weight, the service life that can also ensure to put groove simultaneously.According to an embodiment of the present utility model, the edge thickness of refractory material internal layer 3 is 1～3mm, and the centre thickness of refractory material internal layer 3 is 16～20mm, but the utility model is not limited to this.
According to another embodiment of the present utility model, pendulum groove also comprises anticracking metal mesh sheet 4, and this anticracking metal mesh sheet is arranged at centre and the close end face baffle plate 2 of refractory material internal layer 3.Adopting after refractory material internal layer of the present utility model, it is that local refractory material internal layer in pendulum groove peels off and produce breach that inventor finds to cause putting Another reason that groove damages, and the phenomenon of this shelling of refractory, generation breach mainly occurs in molten steel and washes away district, i.e. the position of close end face baffle plate 2.Therefore, in order to prevent peeling off and breach generation etc. of this region, the utility model has adopted and the mode that metal mesh sheet carries out partial thickening is set has alleviated washing away of molten steel washing away part, district near the molten steel of end face baffle plate 2, not only obtain good effect, and very little to weight and the cost impact of pendulum groove.Particularly, the length of the anticracking metal mesh sheet 4 that the utility model is selected is 300～500mm, and width is as the criterion can put into pendulum groove, but the utility model is not limited to this.
To describe the process of making light and thin type swing-groove for continuous casting tundish of the present utility model in detail below, specifically comprise the following steps:
1, be that 250～325mm, wall thickness are that normal carbon welded still pipe or the seamless steel pipe that 3～6mm, length are 2～25m cut into 2 half slots open by external diameter, wherein any one half slot is the semi-cylindrical shaped shell of making pendulum groove.
2, one end of semi-cylindrical shaped shell is sealed with Plate Welding, the other end is uncovered.
3, at inwall bottom integrated knotting one deck refractory material of semi-cylindrical shaped shell, and build in length range, the thickness of bottom refractory masses is about 8～10mm.
4, wash away refractory material upper berth one deck anticracking metal mesh sheet at district (near sealing steel plate place) at the molten steel of pendulum groove, the width of this anticracking metal mesh sheet is advisable can put into pendulum groove, the length of this anticracking metal mesh sheet is 300～500mm, and the diameter wiry of this anticracking metal mesh sheet is 0.2～0.5mm.
5 and then entirety knotting one deck refractory material thereon, and build in length range, now the gross thickness of bottom refractory masses is about 16～20mm(and comprises primary knotting thickness).
6, finally start to smear refractory material from the edge of semi-cylindrical shaped shell, and make refractory material layer thickness from edge to centre progressive additive, wherein, the refractory material layer thickness of edge (pendulum groove top) is 1～3mm, the thickness of the refractory masses in centre (pendulum trench bottom) is 16～20mm, has formed thus refractory material internal layer.Wherein, refractory masses all requires to smear level and smooth.The initial stage that has now completed pendulum groove makes.
7, by the pendulum groove of making natural drying 24～48h at normal temperatures, then in the baking oven of 150～200 DEG C, dry, baking time is 24～36h, obtains putting groove finished product.
Above-described refractory material is mixed and is formed by aluminium matter castable and magnesia, wherein Al
2o
3proportioning be 25～45%, the proportioning of MgO is 55～75%.
The concrete example of last combination further illustrates the utility model.
example 1:
Be that 273mm, wall thickness are that the normal carbon welded still pipe that 3.5mm, length are 2m is cut into 2 half slots open by external diameter, wherein any one half slot is the semi-cylindrical shaped shell of making pendulum groove.
One end of semi-cylindrical shaped shell is sealed with Plate Welding, and the other end is uncovered.
At inwall bottom integrated knotting one deck refractory material of semi-cylindrical shaped shell, and build in length range, the thickness of bottom refractory masses is about 8.2mm.
Wash away refractory material upper berth one deck anticracking wire netting sheet at district (near sealing steel plate place) at the molten steel of pendulum groove, the width of this anticracking wire netting sheet is advisable can put into pendulum groove, the length of this anticracking wire netting sheet is 300mm, and the diameter of the iron wire of this anticracking wire netting sheet is 0.3mm.
And then the one deck of entirety knotting thereon refractory material, and build in length range, now the gross thickness of bottom refractory masses is about 17mm(and comprises primary knotting thickness).
Finally start to smear refractory material from the edge of semi-cylindrical shaped shell, and make refractory material layer thickness from edge to centre progressive additive, wherein, the refractory material layer thickness of edge (pendulum groove top) is 1mm, the thickness of the refractory masses in centre (pendulum trench bottom) is 17mm, has formed thus refractory material internal layer.Wherein, refractory masses all requires to smear level and smooth.
By the pendulum groove of making natural drying 27h at normal temperatures, then in the baking oven of 160 DEG C, to dry, baking time is 30h, obtains putting groove finished product.
The continuous casting pendulum groove finished product that this example is obtained drops into on-the-spot use, has used altogether 10 to water time, has improved than before 8 times service life.
example 2:
Be that 325mm, wall thickness are that the seamless steel pipe that 5mm, length are 2.1m is cut into 2 half slots open by external diameter, wherein any one half slot is the semi-cylindrical shaped shell of making pendulum groove.
One end of semi-cylindrical shaped shell is sealed with Plate Welding, and the other end is uncovered.
At inwall bottom integrated knotting one deck refractory material of semi-cylindrical shaped shell, and build in length range, the thickness of bottom refractory masses is about 9.4mm.
Wash away refractory material upper berth one deck anticracking steel fabric sheet at district (near sealing steel plate place) at the molten steel of pendulum groove, the width of this anticracking steel fabric sheet is advisable can put into pendulum groove, the length of this anticracking steel fabric sheet is 450mm, and the diameter of the iron wire of this anticracking steel fabric sheet is 0.3mm.
And then the one deck of entirety knotting thereon refractory material, and build in length range, now the gross thickness of bottom refractory masses is about 19mm(and comprises primary knotting thickness).
Finally start to smear refractory material from the edge of semi-cylindrical shaped shell, and make refractory material layer thickness from edge to centre progressive additive, wherein, the refractory material layer thickness of edge (pendulum groove top) is 1.5mm, the thickness of the refractory masses in centre (pendulum trench bottom) is 19mm, has formed thus refractory material internal layer.Wherein, refractory masses all requires to smear level and smooth.
By the pendulum groove of making natural drying 42h at normal temperatures, then in the baking oven of 180 DEG C, to dry, baking time is 36h, obtains putting groove finished product.
The continuous casting pendulum groove finished product that this example is obtained drops into on-the-spot use, has used altogether 9 to water time, has improved than before 7.2 times service life.
In sum, adopt light and thin type swing-groove for continuous casting tundish of the present utility model compared with existing pendulum groove, weight saving approximately 20%, improves 5～10 times service life, and ton steel use cost reduces by 30～40%, and has alleviated on-the-spot labour intensity.
The utility model is not limited to above-described embodiment, in the situation that not departing from the utility model scope, can carry out various changes and modifications.
Claims (5)
1. a light and thin type swing-groove for continuous casting tundish, it is characterized in that, described pendulum groove comprises semi-cylindrical shaped shell, end face baffle plate and refractory material internal layer, described end face baffle plate is arranged on regularly one end of described semi-cylindrical shaped shell and seals one end of described semi-cylindrical shaped shell, described refractory material internal layer is arranged on the whole internal face of described semi-cylindrical shaped shell, and described refractory material internal layer has the progressive thickness being increased gradually to centre by edge.
2. light and thin type swing-groove for continuous casting tundish according to claim 1, is characterized in that, described pendulum groove also comprises anticracking metal mesh sheet, and described anticracking metal mesh sheet is arranged at centre and the close described end face baffle plate of described refractory material internal layer.
3. light and thin type swing-groove for continuous casting tundish according to claim 1, is characterized in that, the external diameter of described semi-cylindrical shaped shell is that 250～325mm, wall thickness are that 3～6mm, length are 2～2.5m.
4. light and thin type swing-groove for continuous casting tundish according to claim 1, is characterized in that, the edge thickness of described refractory material internal layer is 1～3mm, and the centre thickness of described refractory material internal layer is 16～20mm.
5. light and thin type swing-groove for continuous casting tundish according to claim 2, is characterized in that, the length of described anticracking metal mesh sheet is 300～500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075358.6U CN203764919U (en) | 2014-02-21 | 2014-02-21 | Swing groove for light and thin continuous casting tundish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075358.6U CN203764919U (en) | 2014-02-21 | 2014-02-21 | Swing groove for light and thin continuous casting tundish |
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| CN203764919U true CN203764919U (en) | 2014-08-13 |
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| CN201420075358.6U Expired - Fee Related CN203764919U (en) | 2014-02-21 | 2014-02-21 | Swing groove for light and thin continuous casting tundish |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785803A (en) * | 2014-02-21 | 2014-05-14 | 攀钢集团成都钢钒有限公司 | Swinging groove for light thin continuous casting tundish and manufacturing method thereof |
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2014
- 2014-02-21 CN CN201420075358.6U patent/CN203764919U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785803A (en) * | 2014-02-21 | 2014-05-14 | 攀钢集团成都钢钒有限公司 | Swinging groove for light thin continuous casting tundish and manufacturing method thereof |
| CN103785803B (en) * | 2014-02-21 | 2016-03-02 | 攀钢集团成都钢钒有限公司 | A kind of light and thin type swing-groove for continuous casting tundish and preparation method thereof |
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| 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: 20140813 Termination date: 20170221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |