CN104096812A - Thin billet plate fast-to-replace submerged nozzle - Google Patents
Thin billet plate fast-to-replace submerged nozzle Download PDFInfo
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- CN104096812A CN104096812A CN201310129054.3A CN201310129054A CN104096812A CN 104096812 A CN104096812 A CN 104096812A CN 201310129054 A CN201310129054 A CN 201310129054A CN 104096812 A CN104096812 A CN 104096812A
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- nozzle
- mouth
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- delivery port
- thin
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Abstract
The invention provides a thin billet plate fast-to-replace submerged nozzle, which comprises a nozzle body and a water outlet formed in the bottom of the nozzle body, wherein the nozzle body comprises a linear section arranged at the upper end and a horn section connected with the linear section, the upper end of the barrel diameter of the horn section is greater than the lower end of the barrel diameter of the horn section, in addition, the smooth transition is realized from the top to the bottom, and the water outlet is in a flat shape. Compared with the prior art, the thin billet plate fast-to-replace submerged nozzle has the advantages that the thin billet plate fast-to-replace submerged nozzle is applicable to the thin plate billet continuous casting of narrow crystallizers so that steel flow has better stability inside the nozzle and at the outlet part of the nozzle, molten steel can reasonably flow in the crystallizer, and the unstable state of the liquid level of the molten steel is reduced, so the quality of a steel billet is improved, better shock-resistant performance is realized, the service life of the submerged nozzle is prolonged, and the risk of casting interruption is reduced.
Description
Technical field
The present invention relates to the submersed nozzle of a kind of continuous casting thin stock plate quick-changing type.
Background technology
Continuous casting has become the major way of modernization iron and steel enterprise STEELMAKING PRODUCTION.In continuous casting technology, for improving slab quality, between tundish and crystallizer, be typically provided with submersed nozzle, its Main Function is: (1) prevents splashing of secondary oxidation of steel, nitrogenize and molten steel; (2) regulate MOLTEN STEEL FLOW state and injection rate; (3) non-metallic inclusion that prevents covering slag is involved in molten steel, the floating that promotes foreign substance in molten steel is played an important role simultaneously; (4) opposite side casting throwing lumber recovery and slab quality have decisive influence.
The modal configuration of existing quick-changing type submersed nozzle is a refractory material conical tube with zirconium matter slag line layer and the hole that spues, this conical tube shape be mainly used in slab, generous sheet billet continuous casting demand.As shown in Figure 1, staving 1 is the main part at the mouth of a river, and molten steel flows at bowl inner chamber 2 through staving 1, is finally flowed out by discharge opening 3.Although this structure has good practical function, and be not suitable for the narrow sheet blank continuous casting of crystallizer.
Summary of the invention
The object of the invention is to solve above-mentioned technical problem, a kind of thin stock plate quick-changing type submersed nozzle is provided.
Object of the present invention is achieved through the following technical solutions:
Thin stock plate quick change submersed nozzle, comprise mouth of a river body and be arranged on body bottom, mouth of a river delivery port, described mouth of a river body comprises the loudspeaker section composition that is arranged on the straightway of upper end and is connected in straightway, the inner chamber bore of described straightway is unanimous between the higher and lower levels, the bucket upper end, footpath of described loudspeaker section is greater than lower end, and be rounding off from top to bottom, described delivery port is pancake.
Preferably, the outer surface of described straightway is barrel-shaped, and the outer surface of described loudspeaker section is pancake, and cross section is tubaeform.
Preferably, described delivery port cross section is circle, quadrangle or ellipse.
Preferably, described delivery port be arranged on the side of mouth of a river body bottom or with mouth of a river inner chamber on same axis, described delivery port is at least provided with one.
Preferably, described straightway is arranged on the top of slag line layer.
Beneficial effect of the present invention is mainly reflected in: be applicable to the narrow sheet blank continuous casting of crystallizer, make steel stream have better stability in inside, the mouth of a river and exit, molten steel can reasonably be flowed in crystallizer, reduce the labile state of liquid steel level, thereby improve the quality of steel billet, there is good thermal shock resistance, extended the life-span of submersed nozzle, reduced and interrupted watering inferior risk.
Brief description of the drawings
Below in conjunction with accompanying drawing, technical solution of the present invention is described further:
Fig. 1: existing quick-changing type formula gate structure schematic diagram.
Fig. 2: quick-changing type formula gate structure schematic diagram of the present invention.
Fig. 3: the structural representation of delivery port in Fig. 2.
Fig. 4: another structural representation of delivery port in Fig. 2.
Fig. 5 a: structural representation again of delivery port in Fig. 2.
Detailed description of the invention
The present invention has disclosed a kind of thin stock plate quick change submersed nozzle, as shown in Figure 2, comprises mouth of a river body and is arranged on the delivery port 13 of mouth of a river body two bottom sides.
Certainly, the quantity of delivery port and position can arrange as required.Described delivery port 13 also can be provided with one, be only arranged on bottom, with mouth of a river chamber body on same axis.
Described mouth of a river body comprises that the loudspeaker section 12 that is arranged on the straightway 1 of upper end and is connected in straightway 1 forms.Inner chamber 11 bores of described straightway 1 are unanimous between the higher and lower levels, and outer surface is barrel-shaped.Such structure has well realized the effect of quick change.Concrete, described straightway 1 is arranged on the top of slag line layer, and the outer surface profile of described loudspeaker section 12 is pancake, and cross section is tubaeform.Structure of the present invention had both been suitable for the continuous casting of the narrow sheet billet of crystallizer, can engage with the tundish upper nozzle of various shapes or slide plate again, had enough mechanical strengths, can also carry out argon gas-sealed, and isolated air, improves the quality of products.
The bucket upper end, footpath of described loudspeaker section 12 is greater than lower end, and is rounding off from top to bottom, and the lumen openings in the mouth of a river is consistent with it, is also the tubaeform of rounding off.Described delivery port 13 is pancake.In conjunction with shown in Fig. 3 to Fig. 5, described delivery port 13 cross sections can arbitrarily arrange as required, can be chosen as circle, quadrangle or ellipse etc., make steel stream have better stability in inside, the mouth of a river and delivery port, molten steel can reasonably be flowed in crystallizer, reduce the labile state of liquid steel level, thereby improve the quality of steel billet, there is good thermal shock resistance, extended the life-span of submersed nozzle, reduced and interrupted watering inferior risk.
The present invention still has multiple concrete embodiment, and all employings are equal to replacement or equivalent transformation and all technical schemes of forming, within all dropping on the scope of protection of present invention.
Claims (5)
1. thin stock plate quick change submersed nozzle, comprise mouth of a river body and be arranged on body bottom, mouth of a river delivery port, it is characterized in that: described mouth of a river body comprises the loudspeaker section composition that is arranged on the straightway of upper end and is connected in straightway, the inner chamber bore of described straightway is unanimous between the higher and lower levels, the bucket upper end, footpath of described loudspeaker section is greater than lower end, and be rounding off from top to bottom, described delivery port is pancake.
2. thin stock plate quick change submersed nozzle according to claim 1, is characterized in that: the outer surface of described straightway is barrel-shaped, and the outer surface of described loudspeaker section is pancake, and cross section is tubaeform.
3. thin stock plate quick change submersed nozzle according to claim 2, is characterized in that: described delivery port cross section is circle, quadrangle or ellipse.
4. thin stock plate quick change submersed nozzle according to claim 3, is characterized in that: described delivery port be arranged on the side of mouth of a river body bottom or with mouth of a river inner chamber on same axis, described delivery port is at least provided with one.
5. thin stock plate quick change submersed nozzle according to claim 4, is characterized in that: described straightway is arranged on the top of slag line layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129054.3A CN104096812A (en) | 2013-04-15 | 2013-04-15 | Thin billet plate fast-to-replace submerged nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129054.3A CN104096812A (en) | 2013-04-15 | 2013-04-15 | Thin billet plate fast-to-replace submerged nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104096812A true CN104096812A (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310129054.3A Pending CN104096812A (en) | 2013-04-15 | 2013-04-15 | Thin billet plate fast-to-replace submerged nozzle |
Country Status (1)
| Country | Link |
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| CN (1) | CN104096812A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104796A (en) * | 1997-09-26 | 1999-04-20 | Nippon Steel Corp | Immersion nozzle for continuous casting thin and wide slab |
| KR20050021278A (en) * | 2003-08-27 | 2005-03-07 | 조선내화 주식회사 | submerged entry nozzle for continuous casting |
| KR100792733B1 (en) * | 2006-08-10 | 2008-01-08 | 조선내화 주식회사 | Submerged entry nozzle for continuous casting |
| CN201313176Y (en) * | 2008-11-27 | 2009-09-23 | 中钢集团洛阳耐火材料研究院有限公司 | Specially-shaped immersion type water opening provided for continuous casting of sheet billet |
| CN201470878U (en) * | 2009-07-13 | 2010-05-19 | 河北钢铁股份有限公司 | Thin-slab continuous casting tundish submerged nozzle |
| CN102398025A (en) * | 2011-12-12 | 2012-04-04 | 辽宁科技大学 | Double-hole immersed waterslot for flexible thin slab casting (FTSC) crystallizer |
| CN102834206A (en) * | 2010-01-18 | 2012-12-19 | 朝鲜耐火株式会社 | Immersed nozzle for casting and continuously casting apparatus including same |
| ES2397249T3 (en) * | 2006-06-01 | 2013-03-05 | Refractory Intellectual Property Gmbh & Co. Kg | Laundry diver |
| CN203253919U (en) * | 2013-04-15 | 2013-10-30 | 维苏威高级陶瓷(苏州)有限公司 | Sheet billet fast-replacing submerged nozzle |
-
2013
- 2013-04-15 CN CN201310129054.3A patent/CN104096812A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11104796A (en) * | 1997-09-26 | 1999-04-20 | Nippon Steel Corp | Immersion nozzle for continuous casting thin and wide slab |
| KR20050021278A (en) * | 2003-08-27 | 2005-03-07 | 조선내화 주식회사 | submerged entry nozzle for continuous casting |
| ES2397249T3 (en) * | 2006-06-01 | 2013-03-05 | Refractory Intellectual Property Gmbh & Co. Kg | Laundry diver |
| KR100792733B1 (en) * | 2006-08-10 | 2008-01-08 | 조선내화 주식회사 | Submerged entry nozzle for continuous casting |
| CN201313176Y (en) * | 2008-11-27 | 2009-09-23 | 中钢集团洛阳耐火材料研究院有限公司 | Specially-shaped immersion type water opening provided for continuous casting of sheet billet |
| CN201470878U (en) * | 2009-07-13 | 2010-05-19 | 河北钢铁股份有限公司 | Thin-slab continuous casting tundish submerged nozzle |
| CN102834206A (en) * | 2010-01-18 | 2012-12-19 | 朝鲜耐火株式会社 | Immersed nozzle for casting and continuously casting apparatus including same |
| CN102398025A (en) * | 2011-12-12 | 2012-04-04 | 辽宁科技大学 | Double-hole immersed waterslot for flexible thin slab casting (FTSC) crystallizer |
| CN203253919U (en) * | 2013-04-15 | 2013-10-30 | 维苏威高级陶瓷(苏州)有限公司 | Sheet billet fast-replacing submerged nozzle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |