CN204470560U - A kind of casting for shaped blank continuous tundish turbulence controller - Google Patents
A kind of casting for shaped blank continuous tundish turbulence controller Download PDFInfo
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- CN204470560U CN204470560U CN201520153519.3U CN201520153519U CN204470560U CN 204470560 U CN204470560 U CN 204470560U CN 201520153519 U CN201520153519 U CN 201520153519U CN 204470560 U CN204470560 U CN 204470560U
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Abstract
The utility model relates to a kind of casting for shaped blank continuous tundish turbulence controller, comprise shell, base plate, cover core and pressure ring, shell is the cavity structure of upper end open, base plate is positioned at the bottom of cavity pocket of outer cover, the bottom of cover core is positioned on base plate, pressure ring is arranged on cover core upper end be positioned at cavity pocket of outer cover, and pressure ring and the cover longitudinal centre line of core overlap with the longitudinal centre line of shell inner cavity, in the enclosure at the bottom of chamber and base plate, arrange dilatation joint between outer casing inner wall and cover core.The utility model, by arranging pressure ring above cover core, solves the problem that cover core sidewall upper strata magnesia carbon brick comes off; When installing this turbulence inhibitor, same in same plane above pressure ring multiple pressure brick being circumferentially set, solving the overall flotation issue of turbulence inhibitor, improve the quality stability of turbulence inhibitor, achieve unforeseeable technique effect.
Description
Technical field
The utility model relates to a kind of casting for shaped blank continuous tundish turbulence controller, belongs to continuous casting production technology field.
Background technology
Near net shape beam blank continuous casting is because of the particularity of its section, and it is the Novel continuous casting technique integrating round base, square billet, slab, and tundish is designed to long and narrow trapezoidal bag, and each casting stream employing 2 metering nozzle cast, Tundish Flow Field is uneven.Turbulence inhibitor is set in tundish, the running route of molten steel in tundish can be changed, extend the time of staying, promote that the floating of field trash is got rid of, raising slab quality is played an important role.The combined type turbulence inhibitor that prior art is produced, comprise shell, base plate, cover core, dilatation joint, ORC, Problems existing and deficiency in the production application of near net shape beam blank continuous casting production: (1) combined type turbulence inhibitor quality stability is not enough, easily there is the problem of coming off in the upper strata magnesia carbon brick of preparation cover core sidewall, affects service life; (2) combined type turbulence inhibitor is provided with defect, easily occurs overall floating, causes that special-shaped billet continuous casting machine is unplanned stops the accident of watering.
Chinese patent literature CN203992297U discloses a kind of continuous casting production inward turning type turbulence inhibitor, this turbulence inhibitor comprises controller body and intrinsic hollow chamber, the upper end of hollow chamber is provided with opening, bottom hollow chamber, to be provided with rotation direction consistent for surrounding, not with the cube eddy flow catch of lateral vertical.Immediately below tundish long nozzle, the consistent cube eddy flow catch of rotation direction is set with bottom the hollow chamber that the long nozzle of cast is corresponding, the molten steel injected through tundish long nozzle is made to form the velocity field of an eddy flow, liquid fluctuating can be prevented excessive, stablize molten steel, reduce tubulence energy, the centrifugal force produced facilitates again the collision probability of non-metallic inclusion significantly, Collision coagulation better floats after growing up, and can more be conducive to removing, and finally reaches the object of cleaning molten steel.The main purpose of this turbulence inhibitor removes the impurity in molten steel, inapplicable near net shape beam blank continuous casting production, can not solve the problem existing for turbulence inhibitor near net shape beam blank continuous casting production.
Chinese patent literature CN203316714U describes a kind of continuous casting production self-rotary turbulence inhibitor, this turbulence inhibitor comprises spin chamber and is arranged on the tangential inlet bottom spin chamber, also comprise guiding gutter, this guiding gutter comprises interconnective tipper and level trough, described level trough is connected with the tangential inlet bottom spin chamber, and tipper is arranged on the below of the long nozzle of tundish.The utility model continuous casting production self-rotary turbulence inhibitor, by arranging guiding gutter, long nozzle does not need to be connected with spin chamber just can be made molten steel enter spin chamber to form eddy flow field, solves long nozzle in prior art and changes the technical problem of difficulty, and the better effects if of removal of inclusions.This turbulence inhibitor is mainly used to solve the technical problem that long nozzle changes difficulty, inapplicable near net shape beam blank continuous casting production, does not also solve the problem near net shape beam blank continuous casting production existing for turbulence inhibitor.
By retrieval, finding no the prior art of the technical problem solved existing near net shape beam blank turbulence controller for continuous casting middle ladle, also not finding the report of any technical problem about solving existing near net shape beam blank turbulence controller for continuous casting middle ladle.Therefore, the casting for shaped blank continuous tundish turbulence controller designing a kind of new structure is needed badly.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of casting for shaped blank continuous tundish turbulence controller.
The technical solution of the utility model is as follows:
A kind of casting for shaped blank continuous tundish turbulence controller, comprise shell, base plate, cover core and pressure ring, described shell is the cavity structure of upper end open, described base plate is positioned at the bottom of cavity pocket of outer cover, the bottom of described cover core is positioned on base plate, described pressure ring is arranged on cover core upper end and is positioned at cavity pocket of outer cover, described pressure ring and the cover longitudinal centre line of core overlap with the longitudinal centre line of shell inner cavity, in the enclosure at the bottom of chamber and base plate, between outer casing inner wall and cover core, dilatation joint is set, cover core and base plate exposed face are coated with ORC.
Preferably, described shell comprises the outer arc wall, side wall of outer shell and the housing inner end walls that connect as one successively.
Preferably, described outer arc wall is presented along large, lower along little semicircle, and described side wall of outer shell is presented along large, lower along little trapezoidal, and housing inner end walls is rectangular.
Preferably, described shell adopts magnesia spinel matter castable moulding by casting.
Preferably, described base plate adopts the magnesia carbon brick of mechanical pressing to build by laying bricks or stones.
Preferably, described base plate adopts that the length of magnesia carbon brick is 230 ~ 300mm, width is 115 ~ 150mm, thickness is 65 ~ 100mm.
Further preferred, described base plate adopts the length of magnesia carbon brick × wide × thick to be 300 × 150 × 100mm or 230 × 115 × 65mm.
Preferably, the material selection ovenstone cotton of described dilatation joint.
Preferably, the dilatation joint thickness between described outer casing inner wall and cover core is 1.0 ~ 1.5mm; Dilatation joint thickness at the bottom of described shell inner cavity and between base plate is 2.0 ~ 2.5mm.
Preferably, described cover core and pressure ring are annular column, the internal radius of described cover core and pressure ring is 380 ~ 420mm, and the annulus thickness of described cover core is 105 ~ 115mm, and the annulus thickness of described pressure ring is the cover annulus thickness of core and the thickness sum of dilatation joint.
Preferably, described cover core adopts arc magnesia carbon brick annular to build by laying bricks or stones, adopts high-temperature adhesives to combine between magnesia carbon brick.
Preferably, described magnesia carbon brick refers to the magnesia carbon brick of the resin-bonded for steelmaking converter, refining furnace, and its content of MgO is 69 ~ 85%, and C content is 14 ~ 18%, and bulk density is 2.87 ~ 3.15g/cm
3, cold crushing strength is 30 ~ 50MPa.
Preferably, described high-temperature adhesives, adopt normal temperature refractory brick adhesive strength>=11kg/cm
2and 1500 DEG C are burnt rear refractory brick adhesive strength>=54kg/cm
2adhesive.
Preferably, the annulus height of described pressure ring is 25 ~ 35mm, and pressure ring adopts magnesia spinel matter castable moulding by casting.
The installation process of this casting for shaped blank continuous tundish turbulence controller, comprises the following steps,
(1) adopt prior art, underwrite lining work dry materials of first constructing, thickness is 60 ~ 80mm; The bag wall working lining dry materials of constructing again beyond impact zone working lining, thickness is 70 ~ 80mm, then baking molding;
(2) located by turbulence inhibitor, its longitudinal centre line overlaps with the center line of ladle long nozzle, between turbulence inhibitor and permanent liner, adopts coating to tamp;
(3) fixing turbulence inhibitor, adopt and build impact zone working lining by laying bricks or stones by rear magnesia carbon brick wet method, wait build by laying bricks or stones turbulence inhibitor on along time, horizontal setting three pieces of pressure bricks, wherein one piece of pressure brick is placed on the longitudinal centre line of tundish impact area, another two pieces of pressure bricks and tundish impact area longitudinal centre line symmetrical placement, the angle of itself and horizontal direction is 60 ° ~ 90 °, and one end of pressure brick embeds in impact zone working lining, other end level presses through 1/3 ~ 1/2 of the pressure ring thickness of turbulence inhibitor, then continue to adopt to have built impact zone working lining by laying bricks or stones with rear magnesia carbon brick, finally smearing one deck coating with the outer surface of rear magnesia carbon brick, the thickness x of impact zone working lining is 50 ~ 70mm, the thickness y of coating is 15 ~ 25mm, so far the installation of casting for shaped blank continuous tundish turbulence controller is completed.
In step (3), describedly use rear magnesia carbon brick, refer to magnesia carbon brick use on steelmaking converter, refining furnace after, remove use rear magnesia carbon brick, and to form through selection, cleaning, brick-laying machine fixed length cutting, its cut lengths is equal with the thickness of impact zone working lining, is 50 ~ 70mm.
In step (1), described bag wall working lining dry materials and underwrite lining work dry materials, refer to the magnesia spinel matter dry materials for continuous casting tundish working lining that prior art is produced or secondary magnesium carbonaceous dry materials.
In step (3), described coating, refers to the magnesia coating for continuous casting tundish working lining that prior art is produced or regeneration magnesia chrome carbon coating.
The beneficial effects of the utility model are:
1, after the turbulence inhibitor that the utility model improves is applied on casting for shaped blank continuous tundish, the dilatation joint varied in size of the pressure ring that its top is set up and design, solve the problem that cover core sidewall upper strata magnesia carbon brick comes off, achieve unforeseeable technique effect.
2, the turbulence inhibitor after the utility model improvement, when casting for shaped blank continuous tundish is installed, set up three pieces of pressure bricks at an upper portion thereof and carry out the fixing of turbulence inhibitor, 3 determine a plane, thoroughly solve the overall flotation issue of turbulence inhibitor, improve the quality stability of turbulence inhibitor.
3, the utility model is while raising turbulence inhibitor quality stability, extend its service life, single Bao Lian time of watering brought up to 36 ~ 40 hours by 30 ~ 34 hours, improve more than 4 hours on year-on-year basis, solve that the special-shaped billet continuous casting machine caused because of turbulence inhibitor quality problems is unplanned stops the accident of watering in essence simultaneously, improve safety and reliability.
4, the installation method of the utility model turbulence inhibitor, wherein use the waste magnesia carbon brick after steelmaking converter, refining furnace use, after selection, cleaning, fixed length cutting, be directly used in and build casting for shaped blank continuous tundish impact area working lining by laying bricks or stones, reduce the liner in dundish cost of resistance to material 0.5 ~ 1.0 yuan on year-on-year basis, saved mineral resources simultaneously, decreased environmental pollution, made low-cost competition advantage to iron and steel enterprise, Resources for construction economizing type, environment-friendly enterprise have important strategic importance.
Accompanying drawing explanation
Fig. 1 is the front view of the utility model casting for shaped blank continuous tundish turbulence controller;
Fig. 2 is the top view of the utility model casting for shaped blank continuous tundish turbulence controller;
Top view when Fig. 3 is the installation of the utility model casting for shaped blank continuous tundish turbulence controller;
Fig. 4 is the sectional view in A-A direction in Fig. 3.
Wherein: 1, pressure ring, 2, shell, 3, cover core; 4, base plate, 5, dilatation joint A, 6, dilatation joint B, 7, outer arc wall, 8, side wall of outer shell, 9, housing inner end walls, 10, tundish permanent liner, 11, impact zone working lining, 12, pressure brick, 13, turbulence inhibitor, 14, coating, 15, bag wall working lining dry materials, 16, the mouth of a river, 17, underwrite lining work dry materials, 18, ladle long nozzle.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is described further below by embodiment, but is not limited thereto.
Embodiment 1:
The present embodiment provides a kind of casting for shaped blank continuous tundish turbulence controller 13, as depicted in figs. 1 and 2, this turbulence inhibitor 13 comprises shell 2, base plate 4, cover core 3 and pressure ring 1, shell 2 is the cavity structure of upper end open, base plate 4 is positioned at the bottom of cavity pocket of outer cover, the bottom of cover core 3 is positioned on base plate 4, pressure ring 1 is arranged on cover core 3 upper end and is positioned at cavity pocket of outer cover, pressure ring 1 and the cover longitudinal centre line of core 3 overlap with the longitudinal centre line of shell inner cavity, in the enclosure at the bottom of chamber with base plate 4, between outer casing inner wall and cover core 3, dilatation joint is set, cover core and base plate exposed face are coated with ORC.
Wherein, the profile of shell 2 is fan-shaped, and shell 2 comprises the outer arc wall 7, side wall of outer shell 8 and the housing inner end walls 9 that connect as one successively.The both sides connected with outer casing sidewall 8 of outer arc wall 7, the side wall of outer shell 8 of both sides is connected to form an internal cavities by housing inner end walls 9.Outer arc wall 7 is presented along large, lower along little semicircle, and it is in the same size to ensure that the gradient of outer arc wall 7 is arranged with the gradient of its installation outer tundish permanent liner 10 leaned on afterwards, and side wall of outer shell 8 is presented along large, lower along little trapezoidal, and housing inner end walls 9 is rectangular.
In material, shell 2 adopts magnesia spinel matter castable moulding by casting.Base plate 4 adopts the magnesia carbon brick of mechanical pressing to build by laying bricks or stones.Base plate 4 adopts the length of magnesia carbon brick × wide × thick to be 300 × 150 × 100mm.As the material selection ovenstone cotton of dilatation joint.Wherein, the dilatation joint A5 thickness between outer casing inner wall and cover core is 1.0mm; Dilatation joint B6 thickness at the bottom of shell inner cavity and between base plate is 2.0mm.
Cover core 3 and pressure ring 1 are all designed to annular column, the internal radius D of cover core 3 and pressure ring 1 is 380mm, the annulus thickness C of cover core 3 is 105mm, the annulus thickness of pressure ring 1 is the cover annulus thickness C of core and the thickness e sum of dilatation joint A5, the annulus height a of pressure ring 1 is 25mm, and pressure ring 1 adopts magnesia spinel matter castable moulding by casting.Cover core 3 adopts arc magnesia carbon brick annular to build by laying bricks or stones, adopts high-temperature adhesives to combine between magnesia carbon brick.
Magnesia carbon brick refers to the magnesia carbon brick of the resin-bonded for steelmaking converter, refining furnace, and its content of MgO is 69 ~ 85%, and C content is 14 ~ 18%, and bulk density is 2.87 ~ 3.15g/cm
3, cold crushing strength is 30 ~ 50MPa.
High-temperature adhesives, adopt normal temperature refractory brick adhesive strength>=11kg/cm
2and 1500 DEG C are burnt rear refractory brick adhesive strength>=54kg/cm
2adhesive.
The turbulence inhibitor that the present embodiment provides, pressure ring is set up above cover core, and in conjunction with the dilatation joint of appropriate design, the wherein thickness e of dilatation joint A and the thickness b of dilatation joint B, that those skilled in the art obtains through designing and calculating and practical exploration, make the utility model not only can eliminate magnesia spinel matter castable, the effect of magnesia carbon brick expanded by heating causes crackle quality problems, but also can solve because of dilatation joint arrange excessive cause cover core sidewall upper strata magnesia carbon brick loosens, come off problem.
Embodiment 2:
The present embodiment provides a kind of casting for shaped blank continuous tundish turbulence controller, and as described in Example 1, difference is structure: base plate 4 adopts the length of magnesia carbon brick × wide × thick to be 230 × 115 × 65mm.Dilatation joint A5 thickness between outer casing inner wall and cover core 3 is 1.5mm; Dilatation joint B6 thickness at the bottom of shell inner cavity and between base plate 4 is 2.5mm.
Cover core 3 and pressure ring 1 are all designed to annular column, the internal radius D of cover core 3 and pressure ring 1 is 420mm, the annulus thickness C of cover core 3 is 115mm, the annulus thickness of pressure ring 1 is the cover annulus thickness C of core and the thickness e sum of dilatation joint A5, the annulus height a of pressure ring 1 is 35mm, and pressure ring 1 adopts magnesia spinel matter castable moulding by casting.Cover core 3 adopts arc magnesia carbon brick annular to build by laying bricks or stones, adopts high-temperature adhesives to combine between magnesia carbon brick.
As shown in Figure 3 and Figure 4, the installation process of this casting for shaped blank continuous tundish turbulence controller is as follows:
(1) adopt prior art, underwrite lining work dry materials 17 of first constructing, thickness h is 80mm; The bag wall working lining dry materials 15, thickness z of constructing again beyond impact zone working lining is 80mm, then baking molding;
(2) located by turbulence inhibitor 13, its longitudinal centre line overlaps with the center line of ladle long nozzle 18, between turbulence inhibitor 13 and permanent liner 10, adopts coating to tamp;
(3) fixing turbulence inhibitor 13, adopt and build impact zone working lining 11 by laying bricks or stones by rear magnesia carbon brick wet method, wait build by laying bricks or stones turbulence inhibitor 13 on along time, horizontal setting three pieces of pressure bricks 12, wherein one piece of pressure brick is placed on the longitudinal centre line of tundish impact area, another two pieces of pressure bricks and tundish impact area longitudinal centre line symmetrical placement, the angle β of itself and horizontal direction is 90 °, and one end of pressure brick embeds in impact zone working lining 11, other end level presses through 1/2 of pressure ring 1 thickness of turbulence inhibitor 13, then continue to adopt to have built impact zone working lining 11 by laying bricks or stones with rear magnesia carbon brick, finally smearing one deck coating 14 with the outer surface of rear magnesia carbon brick, the thickness x of impact zone working lining 11 is 70mm, the thickness y of coating 14 is 25mm, so far the installation of casting for shaped blank continuous tundish turbulence controller is completed.
Wherein, what adopt in step (3) uses rear magnesia carbon brick, refer to magnesia carbon brick uses on steelmaking converter, refining furnace after, remove use rear magnesia carbon brick, and through selection, clear up, brick-laying machine fixed length cutting forms, its cut lengths is equal with the thickness of impact zone working lining, is 70mm.
In step (1), described bag wall working lining dry materials 15 and underwrite lining work dry materials 17, refer to the magnesia spinel matter dry materials for continuous casting tundish working lining that prior art is produced or secondary magnesium carbonaceous dry materials.
The coating 14 adopted in step (3) is the magnesia coating for continuous casting tundish working lining or the regeneration magnesia chrome carbon coating of prior art production.
Turbulence inhibitor after installation, a plan view is determined by 3, three pieces of pressure bricks are set in same plane above pressure ring, three pieces of pressure bricks effectively provide horizontal and vertical support force and pressure, the turbulence inhibitor made is more firm more stable in tundish, avoid the overall flotation issue of turbulence inhibitor, improve the quality stability of turbulence inhibitor.
Claims (8)
1. a casting for shaped blank continuous tundish turbulence controller, it is characterized in that, comprise shell, base plate, cover core and pressure ring, described shell is the cavity structure of upper end open, described base plate is positioned at the bottom of cavity pocket of outer cover, the bottom of described cover core is positioned on base plate, described pressure ring is arranged on cover core upper end and is positioned at cavity pocket of outer cover, described pressure ring and the cover longitudinal centre line of core overlap with the longitudinal centre line of shell inner cavity, in the enclosure at the bottom of chamber and base plate, between outer casing inner wall and cover core, dilatation joint is set, cover core and base plate exposed face are coated with ORC.
2. casting for shaped blank continuous tundish turbulence controller as claimed in claim 1, it is characterized in that, described shell comprises the outer arc wall, side wall of outer shell and the housing inner end walls that connect as one successively; Described outer arc wall is presented along large, lower along little semicircle, and described side wall of outer shell is presented along large, lower along little trapezoidal, and housing inner end walls is rectangular.
3. casting for shaped blank continuous tundish turbulence controller as claimed in claim 1 or 2, is characterized in that, described base plate adopts the magnesia carbon brick of mechanical pressing to build by laying bricks or stones; The length of described base plate employing magnesia carbon brick is 230 ~ 300mm, width is 115 ~ 150mm, thickness is 65 ~ 100mm.
4. casting for shaped blank continuous tundish turbulence controller as claimed in claim 3, is characterized in that, described base plate adopts the length of magnesia carbon brick × wide × thick to be 300 × 150 × 100mm or 230 × 115 × 65mm.
5. casting for shaped blank continuous tundish turbulence controller as claimed in claim 1, is characterized in that, the dilatation joint thickness between described outer casing inner wall and cover core is 1.0 ~ 1.5mm; Dilatation joint thickness at the bottom of described shell inner cavity and between base plate is 2.0 ~ 2.5mm.
6. casting for shaped blank continuous tundish turbulence controller as claimed in claim 1, it is characterized in that, described cover core and pressure ring are annular column, the internal radius of described cover core and pressure ring is 380 ~ 420mm, the annulus thickness of described cover core is 105 ~ 115mm, and the annulus thickness of described pressure ring is the cover annulus thickness of core and the thickness sum of dilatation joint.
7. casting for shaped blank continuous tundish turbulence controller as claimed in claim 1, is characterized in that, described cover core adopts arc magnesia carbon brick annular to build by laying bricks or stones, adopts high-temperature adhesives to combine between magnesia carbon brick.
8. casting for shaped blank continuous tundish turbulence controller as claimed in claim 6, it is characterized in that, the annulus height of described pressure ring is 25 ~ 35mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520153519.3U CN204470560U (en) | 2015-03-18 | 2015-03-18 | A kind of casting for shaped blank continuous tundish turbulence controller |
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| CN201520153519.3U CN204470560U (en) | 2015-03-18 | 2015-03-18 | A kind of casting for shaped blank continuous tundish turbulence controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707956A (en) * | 2015-03-18 | 2015-06-17 | 山东钢铁股份有限公司 | Beam blank continuous casting tundish turbulence controller and installation method thereof |
| CN105397075A (en) * | 2015-12-25 | 2016-03-16 | 山东钢铁股份有限公司 | Low-cost long-service-life turbulence inhibitor for continuous casting tundish and preparation method for low-cost long-service-life turbulence inhibitor |
| CN115194108A (en) * | 2022-06-16 | 2022-10-18 | 山东钢铁股份有限公司 | Continuous casting tundish turbulence controller with molten steel purification function and argon blowing method |
| CN116715530A (en) * | 2023-06-02 | 2023-09-08 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of spinel carbon material with low thermal expansion rate |
-
2015
- 2015-03-18 CN CN201520153519.3U patent/CN204470560U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707956A (en) * | 2015-03-18 | 2015-06-17 | 山东钢铁股份有限公司 | Beam blank continuous casting tundish turbulence controller and installation method thereof |
| CN105397075A (en) * | 2015-12-25 | 2016-03-16 | 山东钢铁股份有限公司 | Low-cost long-service-life turbulence inhibitor for continuous casting tundish and preparation method for low-cost long-service-life turbulence inhibitor |
| CN105397075B (en) * | 2015-12-25 | 2017-09-05 | 山东钢铁股份有限公司 | A kind of inexpensive long lifetime continuous casting tundish turbulence controller and preparation method thereof |
| CN115194108A (en) * | 2022-06-16 | 2022-10-18 | 山东钢铁股份有限公司 | Continuous casting tundish turbulence controller with molten steel purification function and argon blowing method |
| CN115194108B (en) * | 2022-06-16 | 2023-10-13 | 山东钢铁股份有限公司 | Continuous casting tundish turbulence controller with molten steel purification function and argon blowing method |
| CN116715530A (en) * | 2023-06-02 | 2023-09-08 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of spinel carbon material with low thermal expansion rate |
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