CN101524752A - Sheet billet submerged nozzle - Google Patents
Sheet billet submerged nozzle Download PDFInfo
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- CN101524752A CN101524752A CN200910026394A CN200910026394A CN101524752A CN 101524752 A CN101524752 A CN 101524752A CN 200910026394 A CN200910026394 A CN 200910026394A CN 200910026394 A CN200910026394 A CN 200910026394A CN 101524752 A CN101524752 A CN 101524752A
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- deflector
- river
- mouth
- sheet billet
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Abstract
The invention relates to a sheet billet submerged nozzle which is characterized by being internally provided with at least one group of outer guide plates and at least one group of inner guide plates so as to enable a steel-tapping hole of the sheet billet submerged nozzle to be divided into a plurality of independent passages, and guide blocks are arranged the inner bottom surfaces of the submerged nozzle arranged at the lower part among the inner guide plates; the guide surfaces of the outer guide plates are combined surfaces of curved surfaces or a section of flat surface or a plurality of sections of flat surfaces or curved surfaces and flat surfaces, and the groups of outer guide plates are mutually symmetrically arranged; the guide surfaces of the inner guide plates are combined surfaces of curved surfaces or a section of flat surface or a plurality of sections of flat surfaces or curved surfaces and flat surfaces, and the groups of inner guide plates are mutually symmetrically arranged. The invention can more personally divide molten steel into multi-ply sheet billet submerged nozzles to enable the molten steel to flow into a crystallizer according to a production needed way so as to ensure the liquid level of the crystallizer to be stable at a high pulling speed, thereby effectively reducing the fluctuation of the liquid level inside the crystallizer during high pulling speed, more effectively restraining the dynamic unbalance of the liquid level of the sheet billet crystallizer, preventing slag entrapment and restraining cracks of casting blanks.
Description
Technical field
The present invention relates to sheet billet technical field like a chain of pearls or a string of beads, provide a kind of and can guarantee the stable Submersed nozzle of sheet billet of liquid steel level in the thin slab mold.
Background technology
Sheet blank continuous casting is the newer technology of steel casting, because the particularity of crystallizer, in the steel pouring process, molten steel portion within it very easily produces big fluctuation, thereby causes the volume slag, steel billet is mingled with scraps, and steel billet is cracked because of inhomogeneous cooling is even.Had a lot of people to go in for the study and development between the several years in past, design is applicable to the mouth of a river in this field.
Publication number be CN1075968C patent disclosure a kind of mouth of a river with diamond internal geometry, original submersed nozzle is optimized, original two tapping holes are divided into four, the molten steel that flows in the crystallizer is divided into four stream thighs, improve the flow field of molten steel in crystallizer to a certain extent, reduced the fluctuation of mold liquid level.
Yet, raising along with the conticaster pulling rate, original design can not have been satisfied the requirement of production, strand is mingled with seminess and still happens occasionally, for this reason, need a kind of Submersed nozzle of sheet billet that molten steel can be divided into more artificially multiply badly, make molten steel flow into crystallizer according to producing the mode that needs more, thereby make mold liquid level under high pulling rate, also can guarantee to stablize.
Summary of the invention
The objective of the invention is to address the aforementioned drawbacks, provide a kind of and molten steel can be subdivided into six or six Submersed nozzle of sheet billet, the fluctuation of liquid level in the crystallizer when reaching the high pulling rate of effective minimizing with the upper reaches thigh.
Technical scheme of the present invention is:
A kind of Submersed nozzle of sheet billet is provided with at least one group of outer deflector and at least one group of interior deflector in the mouth of a river, make the tapping hole at the mouth of a river be divided into a plurality of autonomous channels, and the mouth of a river inner bottom surface of bottom is provided with baffle between the interior deflector.
The guide face of described outer deflector is curved surface or one section plane or plurality of sections plane or curved surface and planar combination face, and every group of outer deflector is symmetrically set, and the angle or the curvature of outer deflector two guide faces separately are identical or different.
The guide face of deflector is curved surface or one section plane or plurality of sections plane or curved surface and planar combination face in described, and every group of interior deflector is symmetrically set, and the angle or the curvature of interior deflector two guide faces separately are identical or different.
The center of deflector and outer deflector is centered close to sustained height or differing heights place in the mouth of a river in described.
The length of the length of deflector and outer deflector is identical or different in described.
The guide face of described outer deflector is the plane, the deflection angle of this guide face be 0 spend to 30 the degree.
The guide face of deflector is the plane in described, and the deflection angle of this guide face is 0 to spend to 30 degree.
The distance of bottom, the centre distance mouth of a river of deflector is less than or equal to 300 millimeters in described; The distance of the bottom, the centre distance mouth of a river of outer deflector is less than or equal to 300 millimeters; The spacing of outer deflector and leptoprosopy limit, mouth of a river wall is 10 millimeters to 100 millimeters; Interior deflector is 10 millimeters to 100 millimeters with the spacing of outer deflector.
The guide face of described baffle is that mutual angle is that 5 to spend to two planes of 20 degree or the guide face of baffle be curved surface, and the height of baffle is 10 millimeters to 300 millimeters.
The angle of described mouth of a river leptoprosopy limit wall and vertical direction is that 10 degree are to 135 degree.
Inside and outside deflector, mouth of a river leptoprosopy limit wall and baffle constitute steel stream together and flow to controller.
The invention has the beneficial effects as follows:
The present invention can be divided into molten steel the Submersed nozzle of sheet billet of multiply more artificially, make molten steel flow into crystallizer according to producing the mode that needs more, thereby make mold liquid level under high pulling rate, also can guarantee to stablize, the fluctuation of liquid level in the crystallizer when reaching the high pulling rate of effective minimizing.
The present invention also can be according to operating mode, height and the angle of adjusting deflector and baffle flow to artificial control steel stream, to allow molten steel more smoothly, stably flow out, many group deflectors also can be set, steel stream by being divided into a plurality of streams thighs in the mouth of a river and entering crystallizer with different angles, is fully guaranteed the stability of molten steel in mold liquid level.Can more effectively suppress the dynamic buckling of thin slab mold liquid level, prevent to roll up slag, suppress the generation of strand crackle.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of embodiments of the invention one.
Fig. 2 is the sectional structure schematic diagram of embodiments of the invention two.
Fig. 3 is the sectional structure schematic diagram of embodiments of the invention three.
Fig. 4 is the sectional structure schematic diagram of embodiments of the invention four.
Fig. 5 is the velocity variations rule schematic diagram of the steel flow velocity degree of embodiments of the invention one and embodiment two and traditional design in the crystallizer short transverse.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
A kind of Submersed nozzle of sheet billet, be provided with at least one group of outer deflector 1,10 and at least one group of interior deflector 2,20 in the mouth of a river 5, make the tapping hole at the mouth of a river 5 be divided at least six autonomous channels, the mouth of a river 5 inner bottom surfaces of bottom are provided with baffle 4 between the interior deflector 2,20.
The guide face of outer deflector 1,10 is one section plane, and every group of outer deflector 1,10 is symmetrically set.
The guide face of interior deflector 2,20 is one section plane, and every group of interior deflector 2,20 is symmetrically set.
The center of interior deflector 2,20 and outer deflector 1,10 be centered close to sustained height place in the mouth of a river 5.The length of interior deflector 2,20 is identical with the length of outer deflector 1,10, is N.The distance of 5 bottoms, the centre distance mouth of a river of deflector 2,20 was L in the distance of 5 bottoms, the centre distance mouth of a river of outer deflector 1,10 equaled.
Among this embodiment, the length of the length of interior deflector 2,20 and outer deflector 1,10 can be 84 millimeters, and the spacing O of interior deflector 2,20 and outer deflector 1,10 can be 49 millimeters.Distance P between the interior deflector 2,20 can be 87 millimeters.The height M of baffle 4 can be 50 millimeters, and the width Q of baffle 4 can be 36 millimeters.
The angle α of outer deflector 1,10 and vertical direction and α ' can be 20 degree.The angle β of interior deflector 2,20 and vertical direction and β ' can be 10 degree.
The guide face 40,41 of baffle 4 can be 10 degree with the angle γ of vertical direction and γ ' respectively.The angle ω of leptoprosopy limit, mouth of a river wall 3,30 and vertical direction and ω ' can be 24 degree.
Embodiment two.
A kind of Submersed nozzle of sheet billet, be provided with at least one group of outer deflector 1,10 and at least one group of interior deflector 2,20 in the mouth of a river 5, make the tapping hole at the mouth of a river 5 be divided at least four autonomous channels, the mouth of a river 5 inner bottom surfaces of bottom are provided with baffle 4 between the interior deflector 2,20.
The guide face of outer deflector 1,10 is one section plane, and every group of outer deflector 1,10 is symmetrically set.
The guide face of interior deflector 2,20 is one section plane, and every group of interior deflector 2,20 is symmetrically set.
The center of interior deflector 2,20 and outer deflector 1,10 be centered close to differing heights place in the mouth of a river 5.The distance L of 5 bottoms, the centre distance mouth of a river of outer deflector 1,10 is greater than the distance R of 5 bottoms, the centre distance mouth of a river of interior deflector 2,20.
The length of interior deflector 2,20 and the length difference of outer deflector 1,10, the length N of interior deflector 2,20 is greater than the length N of outer deflector 1,10 '. Interior deflector 2,20 and outer deflector 1,10 all extend to the bottom margin at the mouth of a river 5.
Embodiment three.
A kind of Submersed nozzle of sheet billet, be provided with at least one group of outer deflector 1,10 and at least one group of interior deflector 2,20 in the mouth of a river 5, make the tapping hole at the mouth of a river 5 be divided at least six autonomous channels, the mouth of a river 5 inner bottom surfaces of bottom are provided with baffle 4 between the interior deflector 2,20.
The guide face of outer deflector 1,10 is plane or curved surface, and every group of outer deflector 1,10 is symmetrically set.The guide face of interior deflector 2,20 is plane or curved surface, and every group of interior deflector 2,20 is symmetrically set.The center of interior deflector 2,20 and outer deflector 1,10 be centered close to sustained height place in the mouth of a river 5.The length of interior deflector 2,20 is identical with the length of outer deflector 1,10, is N.The distance of 5 bottoms, the centre distance mouth of a river of deflector 2,20 was L in the distance of 5 bottoms, the centre distance mouth of a river of outer deflector 1,10 equaled.
The guide face of outer deflector 1,10 can be two sections planes, the deflection angle of this guide face be 0 spend to 30 the degree.The guide face of interior deflector 2,20 can be two sections planes, the deflection angle of this guide face be 0 spend to 30 the degree.
Embodiment four.
A kind of Submersed nozzle of sheet billet, be provided with at least one group of outer deflector 1,10 and at least one group of interior deflector 2,20 in the mouth of a river 5, make the tapping hole at the mouth of a river 5 be divided at least four autonomous channels, the mouth of a river 5 inner bottom surfaces of bottom are provided with baffle 4 between the interior deflector 2,20.
The guide face of outer deflector 1,10 is plane or curved surface, and every group of outer deflector 1,10 is symmetrically set.The guide face of interior deflector 2,20 is plane or curved surface, and every group of interior deflector 2,20 is symmetrically set.The center of interior deflector 2,20 and outer deflector 1,10 be centered close to differing heights place in the mouth of a river 5.The distance L of 5 bottoms, the centre distance mouth of a river of outer deflector 1,10 is greater than the distance R of 5 bottoms, the centre distance mouth of a river of interior deflector 2,20.
The length of interior deflector 2,20 is different with the length of outer deflector 1,10, and the length N of interior deflector 2,20 is greater than the length N of outer deflector 1,10. Interior deflector 2,20 and outer deflector 1,10 all extend to the bottom margin at the mouth of a river 5.
The guide face of outer deflector 1,10 can be two sections planes, and the deflection angle of this guide face is 0 to 30 degree.The guide face of interior deflector 2,20 can be two sections planes, and the deflection angle of this guide face is 0 to 30 degree.
In above-mentioned four embodiment, the angle of leptoprosopy limit, mouth of a river wall 3,30 and vertical direction is ω and ω ', and the angle of ω and ω ' is that 10 degree are to 135 degree.
Among above-mentioned four embodiment, baffle 4 is positioned at 5 inside, the mouth of a river, and specifically the place, 5 bottom at the mouth of a river is advisable with the edge that does not exceed the mouth of a river 5.
The angle or the curvature of outer deflector 1,10 two guide faces separately can be for identical or different.
The angle or the curvature of interior deflector 2,20 two guide faces separately can be for identical or different.α and α ' are respectively the angle of outer deflector 1,10 and vertical direction, the angle of α and α ' be 5 spend to 50 the degree.The angle of deflector 2,20 and vertical direction in β and β ' are respectively, the angle of β and β ' are 5 to spend to 50 and spend.
The distance L of 5 bottoms, the centre distance mouth of a river of outer deflector 1,10 is 50 millimeters to 300 millimeters, and the distance R of 5 bottoms, the centre distance mouth of a river of interior deflector 2,20 is 50 millimeters to 300 millimeters; The spacing of outer deflector 1,10 and leptoprosopy limit, mouth of a river wall 3,30 is 10 millimeters to 100 millimeters; The spacing O of interior deflector 2,20 and outer deflector 1,10 is 10 millimeters to 200 millimeters.
Distance P between the interior deflector 2,20 is 30 millimeters to 300 millimeters.
The guide face 40,41 of baffle 4 is γ and γ ' with the angle of vertical direction respectively, and the angle of γ and γ ' is 0 to spend to 80 degree, and the height M of baffle 4 is 10 millimeters to 100 millimeters, and the width Q of baffle 4 is 20 millimeters to 200 millimeters. Interior deflector 2,20, outer deflector 1,10, leptoprosopy limit, mouth of a river wall 3,30 and baffle 4 constitute steel stream together and flow to controller.Deflector 2,20 or outer deflector 1,10 in many groups also can be set, and steel stream will be divided into the autonomous channel more than six like this.
As Fig. 5, be speed (axis of ordinates, unit m/s) the Changing Pattern schematic diagram of the steel flow velocity degree of embodiments of the invention one and embodiment two and traditional design at crystallizer short transverse (axis of abscissas, the mm of unit).Wherein, curve 1 is represented traditional design, and curve 2 and curve 3 are represented embodiments of the invention one and embodiment two respectively.As can be seen, the intersection point of curve 2 and curve 3 and axis of abscissas, i.e. the shock point of steel stream and crystallizer, in 700.5 millimeters to 840.5 millimeters intervals all under the intersection point of curve 1 and axis of abscissas, thereby liquid level fluctuation of crystallizer is reduced.
Among Fig. 5, under the identical situation of crystallizer height, embodiments of the invention one and embodiment two compare than traditional design, steel flow velocity degree is less, and then just little to the impact of crystallizer, shows that steel levelling current stabilization is moving, therefore, can more effectively suppress the dynamic buckling of thin slab mold liquid level, prevent to roll up slag, suppress the generation of strand crackle.
Claims (10)
1, a kind of Submersed nozzle of sheet billet, it is characterized in that being provided with in the mouth of a river [5] at least one group of outer deflector [1,10] and at least one group in deflector [2,20], make the tapping hole at the mouth of a river [5] be divided into a plurality of autonomous channels, the mouth of a river [5] inner bottom surface of bottom is provided with baffle [4] between the interior deflector [2,20].
2, Submersed nozzle of sheet billet according to claim 1, it is characterized in that described outer deflector [1,10] guide face is curved surface or one section plane or plurality of sections plane or curved surface and planar combination face, every group of outer deflector [1,10] be symmetrically set, the angle or the curvature of outer deflector [1,10] two guide faces separately are identical or different.
3, Submersed nozzle of sheet billet according to claim 1, it is characterized in that described interior deflector [2,20] guide face is curved surface or one section plane or plurality of sections plane or curved surface and planar combination face, deflector [2 in every group, 20] be symmetrically set, the angle or the curvature of interior deflector [2,20] two guide faces separately are identical or different.
4, Submersed nozzle of sheet billet according to claim 1, it is characterized in that described in the center of deflector [2,20] and outer deflector [1,10] be centered close to the mouth of a river [5] interior sustained height or differing heights place.
5, Submersed nozzle of sheet billet according to claim 1, it is characterized in that described in the length of the length of deflector [2,20] and outer deflector [1,10] identical or different.
6, Submersed nozzle of sheet billet according to claim 1 and 2, the guide face that it is characterized in that described outer deflector [1,10] is the plane, the deflection angle of this guide face be 0 spend to 30 the degree.
7, according to claim 1 or 3 described Submersed nozzle of sheet billet, it is characterized in that described in the guide face of deflector [2,20] be the plane, the deflection angle of this guide face is 0 to spend to 30 degree.
8, Submersed nozzle of sheet billet according to claim 1 is characterized in that the distance of the bottom, the centre distance mouth of a river [5] of described interior deflector [2,20] is less than or equal to 300 millimeters; The distance of the bottom, the centre distance mouth of a river [5] of outer deflector [1,10] is less than or equal to 300 millimeters; Outer deflector [1,10] is 10 millimeters to 100 millimeters with the spacing of leptoprosopy limit, mouth of a river wall [3,30]; Interior deflector [2,20] is 10 millimeters to 100 millimeters with the spacing of outer deflector [1,10].
9, Submersed nozzle of sheet billet according to claim 1, the guide face [40 that it is characterized in that described baffle [4], 41] for mutual angle is that 5 to spend to two planes of 20 degree or the guide face [40,41] of baffle [4] be curved surface, the height of baffle [4] is 10 millimeters to 300 millimeters.
10, Submersed nozzle of sheet billet according to claim 8 is characterized in that the described mouth of a river leptoprosopy limit wall [3,30] and the angle of vertical direction are that 10 degree are to 135 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100263947A CN101524752B (en) | 2009-04-22 | 2009-04-22 | Sheet billet submerged nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100263947A CN101524752B (en) | 2009-04-22 | 2009-04-22 | Sheet billet submerged nozzle |
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| CN101524752A true CN101524752A (en) | 2009-09-09 |
| CN101524752B CN101524752B (en) | 2011-02-02 |
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| CN2009100263947A Active CN101524752B (en) | 2009-04-22 | 2009-04-22 | Sheet billet submerged nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103608137A (en) * | 2011-07-06 | 2014-02-26 | 里弗雷克特里知识产权两合公司 | Nozzle for guiding metal melt |
| CN107716884A (en) * | 2017-11-14 | 2018-02-23 | 华耐国际（宜兴）高级陶瓷有限公司 | A kind of new thin strap continuous casting cloth flowing water mouth |
| CN108025352A (en) * | 2015-11-10 | 2018-05-11 | 黑崎播磨株式会社 | Dipping spray nozzle |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
| US10478890B1 (en) | 2016-06-21 | 2019-11-19 | Nucor Corporation | Methods of billet casting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| UA51734C2 (en) * | 1996-10-03 | 2002-12-16 | Візувіус Крусібл Компані | Immersed cup for liquid metal passing and method for letting liquid metal to path through it |
| IT1290931B1 (en) * | 1997-02-14 | 1998-12-14 | Acciai Speciali Terni Spa | FEEDER OF MELTED METAL FOR INGOT MACHINES OF CONTINUOUS CASTING MACHINES. |
| CN201385125Y (en) * | 2009-04-22 | 2010-01-20 | 华耐国际（宜兴）高级陶瓷有限公司 | Sheet billet immersion-type water port |
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2009
- 2009-04-22 CN CN2009100263947A patent/CN101524752B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103608137A (en) * | 2011-07-06 | 2014-02-26 | 里弗雷克特里知识产权两合公司 | Nozzle for guiding metal melt |
| CN103608137B (en) * | 2011-07-06 | 2016-09-28 | 里弗雷克特里知识产权两合公司 | For guiding the nozzle of metal bath |
| CN108025352A (en) * | 2015-11-10 | 2018-05-11 | 黑崎播磨株式会社 | Dipping spray nozzle |
| US10478890B1 (en) | 2016-06-21 | 2019-11-19 | Nucor Corporation | Methods of billet casting |
| US11148192B2 (en) | 2016-06-21 | 2021-10-19 | Nucor Corporation | Shroud for billet casting |
| CN107716884A (en) * | 2017-11-14 | 2018-02-23 | 华耐国际（宜兴）高级陶瓷有限公司 | A kind of new thin strap continuous casting cloth flowing water mouth |
| CN110369683A (en) * | 2019-08-09 | 2019-10-25 | 大连理工大学 | A kind of bearing bush antifriction layer copper alloy fills type device and a kind of preparation method of bearing shell double metallic composite material |
| CN110369683B (en) * | 2019-08-09 | 2020-06-02 | 大连理工大学 | Bearing bush antifriction layer copper alloy mold filling device and preparation method of bearing bush bimetal composite material |
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| Publication number | Publication date |
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| CN101524752B (en) | 2011-02-02 |
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