CN203265623U - Improved liquid steel feeding opening for continuous casting tundish - Google Patents
Improved liquid steel feeding opening for continuous casting tundish Download PDFInfo
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- CN203265623U CN203265623U CN 201320238018 CN201320238018U CN203265623U CN 203265623 U CN203265623 U CN 203265623U CN 201320238018 CN201320238018 CN 201320238018 CN 201320238018 U CN201320238018 U CN 201320238018U CN 203265623 U CN203265623 U CN 203265623U
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- brick
- continuous casting
- upper nozzle
- cone
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Abstract
The utility model discloses an improved liquid steel feeding opening for a continuous casting tundish. According to the improved feeding opening, an upper nozzle brick and an intermediate nozzle brick are coordinately mounted in a through hole of a seating brick; the through hole of the seating brick is shrunk in the middle and formed by two conical holes which are connected into a whole; the diameter of the upper opening of the inverted upper conical hole is greater that of the lower opening of the upright lower conical hole. The upper nozzle brick is structurally characterized in that cylinders arranged at the upper end and the lower end of the upper nozzle brick are respectively and coaxially connected with a cone between the cylinders; a through hole is formed in the axis of the upper nozzle brick; the outer diameter of the upper cylinder is in clearance fit with the diameter of the upper opening of the inverted conical hole of the through hole of the seating brick; the outer diameter of the lower cylinder is in clearance fit with the diameter of the lower opening of the inverted conical hole of the through hole of the seating brick. The intermediate nozzle brick is structurally characterized in that a combination body with a though hole, which is composed by a cylinder and a cone, is arranged on a disk seat, wherein the through hole is formed in the axis of the combination body; the cone and the cylinder of the intermediate nozzle brick are in clearance fit with the upright conical hole of the seating brick. The improved liquid steel feeding opening has the advantages that the service lives of both the feeding opening and the continuous casting tundish are prolonged, the productivity of a continuous casting machine is improved, the accident rate is reduced, and the operating strength is reduced.
Description
Technical field
The utility model belongs to the improvement, particularly a kind of improved continuous casting tundish upper nozzle of steel plant continuous casting workshop tundish upper nozzle structure.
Background technology
The Main Function of continuous casting tundish upper nozzle is that the molten steel water conservancy diversion is entered crystallizer, is anti-section product crucial in continuous casting production process.The former prediction scheme of some steel plant continuous casting tundish is filling pipe end and the lower mouth of a river, such design has caused that this tundish upper nozzle wall is thinner and size tundish can't be changed, and may stop because the filling pipe end seriously corroded of anti-the material causes producing when this design is applied in actual production.Also production time, operating rate are had a significant impact simultaneously, directly affect output and benefit.
The former design of continuous casting tundish upper nozzle is as a whole, filling pipe end is mounted in bottom tundish, and molten steel is from filling pipe end person who lives in exile crystallizer, because molten steel temperature in tundish is very high, corrosion meeting to the filling pipe end inner lining refractory is more serious, and service time, following problem appearred in long meeting:
1, the filling pipe end seriously corroded of anti-the material causes middle free clothing.
2, bore change in the mouth of a river causes greatly the beam amount large, and beam can't accurately be controlled.
Come off after the mouth of a river is corroded and cause the strand foreign impurity to increase.
Summary of the invention
The purpose of this utility model is to provide a kind of improved continuous casting tundish upper nozzle, and it is rational in infrastructure, can improve the service life of filling pipe end, increase the service time of tundish, improve the production capacity of conticaster, the incidence of minimizing accident reduces workman's operation intensity.
The purpose of this utility model is achieved in that a kind of improved continuous casting tundish upper nozzle, coordinate in the through hole of brick cup upper nozzle brick and middle nozzle brick are installed, the conical bores that middle part two of undergauge is connected as a single entity that are shaped as of brick cup through hole consist of, and wherein: the back cut diameter of superposed rounding taper hole is larger than the lower port diameter in the normal cone hole that is positioned at the bottom; The structure of upper nozzle brick is that the cylinder that upper and lower end arranges respectively is connected with the footpath with the cone that is positioned at the middle part respectively, the axle center of upper nozzle brick is arranging through hole, wherein: the rounding taper hole back cut diameter matched in clearance of upper cylindrical external diameter and brick cup through hole, the rounding taper hole lower port diameter matched in clearance of lower cylindrical external diameter and brick cup through hole; The structure of middle nozzle brick consists of the assembly with axis through-hole for arranging by cylinder and cone on disc seat, the cone of middle nozzle brick and cylinder coordinate with the normal cone interporal lacuna of brick cup.
The utility model is divided into two original monoblock type filling pipe end, becomes filling pipe end and the middle mouth of a river, the therefrom installation up and down of bag respectively, and bonding with the beautiful material of resistant to elevated temperatures chromium steel, thus complete tundish upper nozzle formed.
Former filling pipe end wall is thinner, can't satisfy long-time molten steel corrodes, therefore the utility model is divided into filling pipe end and the middle mouth of a river with filling pipe end, and the filling pipe end wall is thickeied, in the situation that do not affect the filling pipe end bore, lengthened the service time of filling pipe end, and we with the size thickening of filling pipe end brick cup, change new High-Alumina brick cup into by former brick cup pattern simultaneously.Such design makes the regional temperature drop of tundish upper nozzle slow down, thereby strengthens the insulating power of tundish.
Through the trial edition utility model, following advantage is arranged:
1, the mouth of a river is easy to use in installation process, as long as filling pipe end and the middle mouth of a river can be used after bonding.Be convenient to installation and removal, for sizing cast in the mouth of a river provides condition.
2, due to the thickness of having thickeied the filling pipe end wall, make filling pipe end in use more anti-molten steel and slag erosion and wash away, thereby make increase to 16 hours by original 8 hours the service life of filling pipe end, can effectively realize the purpose of cost efficiency.
3, tundish lengthens service life, and the conticaster operating rate can be increased to 90%, and the unit production capacity increases.
4, can effectively reduce accident rate and reduce the operation intensity of continuous casting work.
The utility model is rational in infrastructure, has improved the service life of filling pipe end, has increased the service time of tundish, has improved the production capacity of conticaster, has reduced the incidence of accident, has reduced workman's operation intensity.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is further described, Fig. 1 is sectional structure schematic diagram of the present utility model.
The specific embodiment
A kind of improved continuous casting tundish upper nozzle, as shown in Figure 1, coordinate in the through hole of brick cup 1 upper nozzle brick 2 and middle nozzle brick 3 are installed, the conical bores that middle part two of undergauge is connected as a single entity that are shaped as of brick cup 1 through hole consist of, and wherein: the back cut diameter of superposed rounding taper hole is larger than the lower port diameter in the normal cone hole that is positioned at the bottom; The structure of upper nozzle brick 2 is that the cylinder that upper and lower end arranges respectively is connected with the footpath with the cone that is positioned at the middle part respectively, the axle center of upper nozzle brick 2 is arranging through hole, wherein: the rounding taper hole back cut diameter matched in clearance of upper cylindrical external diameter and brick cup 1 through hole, the rounding taper hole lower port diameter matched in clearance of lower cylindrical external diameter and brick cup through hole; The structure of middle nozzle brick 3 consists of the assembly with axis through-hole for arranging by cylinder and cone on disc seat, the cone of middle nozzle brick 3 and cylinder coordinate with the normal cone interporal lacuna of brick cup 1.On upper nozzle brick 2 through holes suitable for reading, conical concave stage is being set, is coordinating the water inlet that is made of the beautiful material of chromium steel is installed on conical concave stage.The refractory tube 5 that is made of the beautiful material of chromium steel in turning 3 axis through-hole, the middle mouth of a river is being set.Brick cup 1 is made of high alumina refractories.
Claims (4)
1. improved continuous casting tundish upper nozzle, it is characterized in that: coordinate upper nozzle brick (2) and middle nozzle brick (3) are installed in the through hole of brick cup (1), the conical bores that middle part two of undergauge is connected as a single entity that are shaped as of brick cup (1) through hole consist of, and wherein: the back cut diameter of superposed rounding taper hole is larger than the lower port diameter in the normal cone hole that is positioned at the bottom; The structure of upper nozzle brick (2) is that the cylinder that upper and lower end arranges respectively is connected with the footpath with the cone that is positioned at the middle part respectively, the axle center of upper nozzle brick (2) is arranging through hole, wherein: the rounding taper hole back cut diameter matched in clearance of upper cylindrical external diameter and brick cup (1) through hole, the rounding taper hole lower port diameter matched in clearance of lower cylindrical external diameter and brick cup through hole; The structure of middle nozzle brick (3) consists of the assembly with axis through-hole for arranging by cylinder and cone on disc seat, the cone of middle nozzle brick (3) and cylinder coordinate (4) with the normal cone interporal lacuna of brick cup (1).
2. a kind of improved continuous casting tundish upper nozzle according to claim 1 is characterized in that: on upper nozzle brick (2) through hole suitable for reading, conical concave stage is being set, is coordinating the water inlet (4) that is made of the beautiful material of chromium steel is installed on conical concave stage.
3. a kind of improved continuous casting tundish upper nozzle according to claim 1 is characterized in that: in the middle mouth of a river turns the axis through-hole of (3), the refractory tube (5) that is made of the beautiful material of chromium steel is being set.
4. a kind of improved continuous casting tundish upper nozzle according to claim 1, it is characterized in that: brick cup (1) is made of high alumina refractories.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238018 CN203265623U (en) | 2013-05-06 | 2013-05-06 | Improved liquid steel feeding opening for continuous casting tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320238018 CN203265623U (en) | 2013-05-06 | 2013-05-06 | Improved liquid steel feeding opening for continuous casting tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265623U true CN203265623U (en) | 2013-11-06 |
Family
ID=49496116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320238018 Expired - Fee Related CN203265623U (en) | 2013-05-06 | 2013-05-06 | Improved liquid steel feeding opening for continuous casting tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203265623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750535A (en) * | 2015-12-10 | 2016-07-13 | 安徽东升精密铸钢件有限公司 | Nozzle device for casting molten steel |
| CN110961614A (en) * | 2019-12-04 | 2020-04-07 | 莱芜钢铁集团新兴液气有限公司 | Brick cup for tundish and continuous casting tundish with same |
-
2013
- 2013-05-06 CN CN 201320238018 patent/CN203265623U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105750535A (en) * | 2015-12-10 | 2016-07-13 | 安徽东升精密铸钢件有限公司 | Nozzle device for casting molten steel |
| CN110961614A (en) * | 2019-12-04 | 2020-04-07 | 莱芜钢铁集团新兴液气有限公司 | Brick cup for tundish and continuous casting tundish with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140506 |