CN201198030Y - Flat immersion water inlet for continuous casting of special-shaped billet - Google Patents
Flat immersion water inlet for continuous casting of special-shaped billet Download PDFInfo
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- CN201198030Y CN201198030Y CNU2008200221057U CN200820022105U CN201198030Y CN 201198030 Y CN201198030 Y CN 201198030Y CN U2008200221057 U CNU2008200221057 U CN U2008200221057U CN 200820022105 U CN200820022105 U CN 200820022105U CN 201198030 Y CN201198030 Y CN 201198030Y
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Abstract
The utility model relates to a flat structure submerged nozzle for the continuous casting of allotypic blank, which belongs to the technical field of metallurgical continuous casting equipment. The flat structure submerged nozzle comprises a molten steel inlet end, a molten steel outlet end and a connecting part which are connected into an integer, wherein, the molten steel outlet end is provided with two slot molten steel discharge holes which are symmetrically arranged left and right, and the section of each slot molten steel discharge hole is of a structure which retracts gradually from inside to outside; a horizontal diversion inclination angle Alpha at 10-20 degrees is arranged between the linear section horizontal directions of the lower edges of the molten steel discharge holes of the molten steel outlet end; the outer height s of the molten steel outlet end is between 70 mm and 90 mm; the largest size L of the nozzle width direction of the molten steel outlet end is between 130 mm and 140 mm, and the largest size T of the thickness direction is between 50 mm and 60 mm; and the wall thickness of the molten steel outlet end is between 15 mm and 20 mm. The utility model has the structural advantages that a molten pool high temperature area of a crystallizer can be moved up relatively fully, the fluctuation of liquid level is effectively controlled and the actual production requirement for the continuous casting of the allotypic blank can be satisfied.
Description
Technical field
The utility model relates to a kind of flat structure submersed nozzle that is used for casting for shaped blank continuous, belongs to the metallurgical continuous casting equipment technical field.
Background technology
Continuous casting steel machine (abbreviation continuous casting) is the technology that molten steel is condensed into continuously strand, wherein the water-cooled copper molding jig is called crystallizer, the mouth of a river that refractory material is made forms connection between tundish and crystallizer, molten steel is continuously injected crystallizer by the mouth of a river and accepts cooling and solidify processing.The molten steel outflow end at the mouth of a river will have the good control effect of certain given shape to realize that molten steel flows in the crystallizer usually, the molten steel that is connected with tundish flows into end and is generally tubular, and what connect inflow end and outflow end is the cylindrical body of a smooth continuous transition of cross sectional shape.In some cases, cylindrical body is blocked makes the mouth of a river form upper and lower two parts, and the latter half (being called the mouth of a river down) that has mouth of a river molten steel outflow end can be replaced in watering steel production continuously.
Different with conventional sheet billet continuous casting, billet continuous casting and round billet continuous casting, the crystallizer of casting for shaped blank continuous is H type (Fig. 1), and its strand is used to produce H shaped steel, has typical near-net-shape process characteristic.On the submersed nozzle problem, casting for shaped blank continuous is main at present to adopt two circular mouths of a river to carry out semi-open-type casting (Fig. 1,2) at web and junction, the edge of a wing.The drawback of semi-open-type casting is to realize the whole process protection of molten steel, and adopts two mouths of a river to carry out the stable control that totally-enclosed casting can not realize molten steel flow well.Adopt single the mouth of a river to carry out the whole process protection casting in the web centre of casting for shaped blank continuous crystallizer and have theoretic feasibility (Fig. 3); the control of crystallizer bath surface is widely applied in the continuous casting of other form is produced with the interlock of control stream stopper, has been proved to be effective.But generally between 90～120mm, working end, mouth of a river inner flow passage, mouth of a river wall thickness and mouth of a river outer wall exist serious conflict and contradiction to the thickness of special-shaped billet continuous casting machine crystallizer web between parameters such as copper coin distance.Even the molten steel outflow end at the mouth of a river is processed into flat pattern, promptly want obviously greater than size the metallurgical effect that working end, mouth of a river structure is brought and mainly by service life of mouth of a river wall thickness decision etc. all facing huge challenge because of the restriction of bulk along thickness direction along the size of crystallizer web width direction.
As a kind of protective agent that prevents the molten steel oxidation with reduce the lubricant of the resistance of motion between solidified shell and the copper plate of crystallizer, the solid particle covering slag that adds on the crystallizer molten steel bath surface need be provided heat and melted by high-temperature molten steel.Quality between covering slag melting conditions and feeding copper plate of crystallizer and the solidified shell has appreciable impact to continuous casting process direct motion and cc billet surface quality; this just requires to concentrate on top, crystallizer molten bath relatively from the high-temperature molten steel of submersed nozzle, especially will guarantee the active of bath surface between submersed nozzle and the copper plate of crystallizer.Molten steel bath surface space, special-shaped billet continuous casting machine crystallizer web place has been subjected to the restriction from web thickness and submersed nozzle, therefore, be used to seem particularly important from the high-temperature molten steel assurance and promotion the active of bath surface of submersed nozzle, mouth of a river molten steel outflow end structure will play an important role at this.But enliven the crystallizer molten steel bath surface also to control proper, undue active can the fluctuating and fluctuation by the aggravation bath surface, and then cause the volume slag and cause slab quality and the technological operation accident.
Based on above-mentioned several respects reason, realization casting for shaped blank continuous whole process protection casts in mouth of a river design and the exploitation and mainly faces following four aspect problems.At first, adopting single flat structure submersed nozzle in crystallizer web center is unique feasible and effective choice; Secondly, mouth of a river molten steel outflow end will satisfy the requirement of the logical steel ability of casting blank section and pulling rate decision, logical steel scarce capacity will cause mouth of a river effluxvelocity excessive and and then cause the generation of bath surface big ups and downs, volume slag and bonding steel leakage accident; The 3rd, must guarantee the useful space between mouth of a river outer wall and the copper coin, insufficient space is with the interpolation of deterioration covering slag, fusing and feeding condition, and the generation of surface longitudinal crack of slab is relevant therewith; The 4th, mouth of a river molten steel outflow end wall thickness will be taken into full account under crystallizer web bulk condition of limited, and it has determined the service life at the mouth of a river and watering continuously the steel time of can satisfying to a certain extent.
Summary of the invention
For overcoming the deficiencies in the prior art, the flat structure submersed nozzle that is used for casting for shaped blank continuous that the utility model provides is a kind of reasonable in design, simple in structure, easy to manufacture, result of use is good.
Main technical schemes of the present utility model is as follows:
A kind of flat submersed nozzle that is used for special-shaped billet continuous casting machine H type crystallizer comprises that molten steel flows into end, molten steel outflow end and coupling part, and above-mentioned three parts connect and compose an integral body; The molten steel outflow end is provided with two symmetrical long and narrow molten steel hole that spues, this molten steel structure of cross section, hole for shrinking gradually from inside to outside that spue.
Described molten steel flows into end and is tube-shaped structure, and the molten steel outflow end is the flat structure, and the coupling part is that inner surface is smooth, the cylindrical body of internal diameter continuous transition.
The molten steel of described molten steel outflow end spues has one 10～20 ° horizontal water conservancy diversion inclination alpha between the straightway of hole lower edge and the horizontal direction; S is between 70～90mm for molten steel outflow end outside height; Molten steel outflow end mouth of a river width full-size L is between 130～140mm, and T is between 50～60mm for thickness direction full-size; The wall thickness of molten steel outflow end is between 15～20mm.
The utility model is used for the submersed nozzle of casting for shaped blank continuous whole process protection casting, and it can make on the high-temperature region, crystallizer molten bath and move and control pool level fluctuation, and has good performance on the time watering steel continuously.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is A-A cut-away view of Fig. 1.
Wherein, 1, molten steel flows into end, 2, the coupling part, 3, molten steel outflow end, 4, the molten steel hole that spues, 5, molten steel outflow end bottom surface, α is the spue horizontal water conservancy diversion inclination angle of hole lower edge of molten steel, s is the spue outside height in hole of molten steel, and L is the width of molten steel outflow end, and T is the wall thickness of molten steel outflow end.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Embodiment 1:
A kind of flat submersed nozzle that is used for special-shaped billet continuous casting machine H type crystallizer comprises that molten steel flows into end 1, molten steel outflow end 3 and coupling part 2, and above-mentioned three parts connect and compose an integral body; Molten steel outflow end 3 is provided with two symmetrical long and narrow molten steel hole 5 that spues, this molten steel structure of cross section, hole for shrinking gradually from inside to outside that spue.
It is tube-shaped structure that described molten steel flows into end 1, and molten steel outflow end 3 is the flat structure, and the coupling part is that inner surface is smooth, the cylindrical body of internal diameter continuous transition.
The molten steel of described molten steel outflow end spues has a horizontal water conservancy diversion inclination alpha between the straightway horizontal direction of hole lower edge, α is 10 °, molten steel outflow end outside height s is 90mm, and the width of molten steel outflow end 3 and thickness direction size L and T are respectively 130mm and 50mm.
Embodiment 2:
Structure is identical in embodiment 1, and difference is, the spue horizontal water conservancy diversion inclination alpha of hole 4 lower edges of two molten steel is 20 °, molten steel outflow end outside height 90mm, and molten steel outflow end 3 width and thickness direction size L and T are respectively 140mm and 50mm.
Embodiment 3:
Structure is identical in embodiment 1, and difference is, the spue horizontal water conservancy diversion inclination alpha of hole 4 lower edges of two molten steel is 15 °, molten steel outflow end outside height 85mm, and molten steel outflow end 3 width and thickness direction size L and T are respectively 140mm and 60mm.
Claims (3)
1. a flat structure submersed nozzle that is used for casting for shaped blank continuous comprises that molten steel flows into end, molten steel outflow end and coupling part, and above-mentioned three parts connect and compose an integral body; It is characterized in that the molten steel outflow end is provided with two symmetrical long and narrow molten steel hole that spues, this molten steel structure of cross section, hole that spue for shrinking gradually from inside to outside.
2. a kind of flat structure submersed nozzle that is used for casting for shaped blank continuous as claimed in claim 1, it is characterized in that, described molten steel flows into end and is tube-shaped structure, and the molten steel outflow end is the flat structure, and the coupling part is that inner surface is smooth, the cylindrical body of internal diameter continuous transition.
3. a kind of flat structure submersed nozzle that is used for casting for shaped blank continuous as claimed in claim 1 is characterized in that, the molten steel of described molten steel outflow end spues has one 10～20 ° horizontal water conservancy diversion inclination alpha between the straightway horizontal direction of hole lower edge; S is between 70～90mm for molten steel outflow end outside height; Molten steel outflow end mouth of a river width full-size L is between 130～140mm, and T is between 50～60mm for thickness direction full-size; The wall thickness of molten steel outflow end is between 15～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221057U CN201198030Y (en) | 2008-05-09 | 2008-05-09 | Flat immersion water inlet for continuous casting of special-shaped billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200221057U CN201198030Y (en) | 2008-05-09 | 2008-05-09 | Flat immersion water inlet for continuous casting of special-shaped billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198030Y true CN201198030Y (en) | 2009-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200221057U Expired - Fee Related CN201198030Y (en) | 2008-05-09 | 2008-05-09 | Flat immersion water inlet for continuous casting of special-shaped billet |
Country Status (1)
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| CN (1) | CN201198030Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212682A (en) * | 2013-04-25 | 2013-07-24 | 沈阳东大新冶金技术有限公司 | Submersed nozzle for plate blank electromagnetic rotational flow continuous casting |
| CN103357828A (en) * | 2013-07-29 | 2013-10-23 | 东北大学 | Casting system used for twin-roll thin strip continuous casting and use method thereof |
| CN107914001A (en) * | 2017-11-16 | 2018-04-17 | 辽宁科技大学 | Molding helical flow path reflects nozzle brick |
-
2008
- 2008-05-09 CN CNU2008200221057U patent/CN201198030Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212682A (en) * | 2013-04-25 | 2013-07-24 | 沈阳东大新冶金技术有限公司 | Submersed nozzle for plate blank electromagnetic rotational flow continuous casting |
| CN103212682B (en) * | 2013-04-25 | 2015-02-25 | 沈阳东大新冶金技术有限公司 | Submersed nozzle for plate blank electromagnetic rotational flow continuous casting |
| CN103357828A (en) * | 2013-07-29 | 2013-10-23 | 东北大学 | Casting system used for twin-roll thin strip continuous casting and use method thereof |
| CN103357828B (en) * | 2013-07-29 | 2015-03-04 | 东北大学 | Casting system used for twin-roll thin strip continuous casting and use method thereof |
| CN107914001A (en) * | 2017-11-16 | 2018-04-17 | 辽宁科技大学 | Molding helical flow path reflects nozzle brick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JINAN IRON AND STEEL CO LTD Free format text: FORMER OWNER: LAIWU IRON CO., LTD. Effective date: 20120316 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 271104 LAIWU, SHANDONG PROVINCE TO: 250101 JINAN, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120316 Address after: 250101 Ji'nan Industrial Road, Shandong, No. 21 Patentee after: Jinan Iron and Steel Co., Ltd. Address before: 271104, Xinxing Road, Gangcheng District, Shandong, Laiwu, 21 Patentee before: Laiwu Iron Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG IRON + STEEL CO., LTD. Free format text: FORMER NAME: JINAN IRON AND STEEL CO LTD |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 250101 Ji'nan Industrial Road, Shandong, No. 21 Patentee after: Shandong Iron & Steel Group Co., Ltd. Address before: 250101 Ji'nan Industrial Road, Shandong, No. 21 Patentee before: Jinan Iron and Steel Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20160509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |