CN203956075U - Be provided with the tundish of gear steel ring - Google Patents
Be provided with the tundish of gear steel ring Download PDFInfo
- Publication number
- CN203956075U CN203956075U CN201420395161.0U CN201420395161U CN203956075U CN 203956075 U CN203956075 U CN 203956075U CN 201420395161 U CN201420395161 U CN 201420395161U CN 203956075 U CN203956075 U CN 203956075U
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- filling pipe
- pipe end
- steel ring
- tundish
- gear steel
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Abstract
The utility model discloses a kind of tundish that is provided with gear steel ring, comprise filling pipe end and brick cup, also comprise gear steel ring, the profile of described gear steel ring is frustum, described frustum middle part has columniform through hole, and described through hole is communicated with upper plane and the lower plane of described frustum; Described gear steel ring is sleeved on described filling pipe end by through hole, and described lower plane is pressed on described brick cup; Space between described filling pipe end and described through hole is filled with fire clay; The outside of described frustum is surrounded by refractory material.The utility model can effectively avoid the stopper causing soon that filling pipe end upper end in casting cycle and near refractory material produce to coordinate the deterioration in accuracy of timing flow-controlling with filling pipe end, avoids causing the unsettled situation generation in the interior liquid level of crystallizer and flow field.
Description
Technical field
The utility model relates to a kind of continuous casting installation for casting, specifically, relates to a kind of tundish that is provided with gear steel ring.
Background technology
At casting machine, open in the process of watering, large Baogang water flow in tundish, usually can occur, because the roasting bag of tundish preheating is inhomogeneous or the degree of superheat of molten steel own is low, to cause molten steel to tie cold steel at tundish upper nozzle place, thereby cause the accident of watering unsuccessfully of opening; Or in refractory material drops bag in the roasting packet procedures of tundish preheating, there is molten steel the refractory material dropping is washed away and is collected to filling pipe end, cause that filling pipe end stops up, and waters unsuccessfully thereby cause opening.Dimension, a kind ofly unwraps filling pipe end while watering in the middle of effectively avoiding and ties filling pipe end protective device that cold steel and resistance to material stop up and will open and water success rate and guarantee that production stability plays vital effect simultaneously improving casting machine.
As shown in Figure 1, be the working state figure of continuous casting tundish in prior art.Open while watering the steel flow in steel ladle 11 through tundish 12, then by the interior filling pipe end 13 of tundish 12, flow into that crystallizers 14 are interior starts casting, by controlling stopper 15 and the distance between filling pipe end 13, control the steel-passing amount in tundish 12 inflow crystallizers 14.
As shown in Figure 2, be the connection status figure of filling pipe end and brick cup in prior art.The filling pipe end 13 of stopper 15 belows is fixed on brick cup 18, and brick cup 18 is fixed on the tundish steel construction 17 of bottom, and brick cup 18 is equipped with refractory material 16 around.
But there is following defect in the structure of now widely used tundish 12:
The upper end of filling pipe end 13 is not protected, and easily occurs because molten steel overheat is low or the roasting bag of tundish 12 preheatings is bad, and the refractory material 16 obstruction filling pipe ends 13 that cause filling pipe end 13 upper ends to tie cold steel or drop, cause to open and water unsuccessfully.In addition; due to the not protection of filling pipe end 13 upper ends; in normal casting cycle; filling pipe end 13 upper ends and near refractory material 16 are through washing away for a long time erosion; easily generating portion is fallen soon; cause stopper 15 to coordinate with it the deterioration in accuracy of timing flow-controlling, thereby the unsettled situation of the interior liquid level of crystallizer 14 and flow field that causes occur.
At present continuous casting needs a kind of protective device that can effectively avoid opening the filling pipe end 13 cold steel of knot and refractory material 16 obstructions while watering with tundish 12 in sum.
Utility model content
The technical problem that the utility model solves is to provide a kind of tundish that is provided with gear steel ring, can reduce the erosion degree of tundish upper nozzle upper end, guarantee the flow control precision between stopper and filling pipe end upper end, guarantee the stability in molten steel in mold liquid level and flow field.
Technical scheme is as follows:
A tundish that is provided with gear steel ring, comprises filling pipe end and brick cup, also comprises gear steel ring, and the profile of described gear steel ring is frustum, and described frustum middle part has columniform through hole, and described through hole is communicated with upper plane and the lower plane of described frustum; Described gear steel ring is sleeved on described filling pipe end by described through hole, and described lower plane is pressed on described brick cup; Space between described filling pipe end and described through hole is filled with fire clay; The outside of described frustum is surrounded by refractory material.
Further: described through-hole diameter is greater than the external diameter 20mm of described filling pipe end, described lower plane external diameter is identical with brick cup external diameter.
Further: described upper plane external diameter is than the little 50mm of described lower plane external diameter.
Further: described upper plane exceeds described refractory material 40mm.
Compared with prior art, the utility model technique effect comprises:
1, the utility model can supportingly be applicable to brick cup and the tundish upper nozzle structure of each style, and raising casting machine is opened and watered success rate, and molten steel in mold level stability while guaranteeing to produce, further to improve the surface quality of strand.
Open in the process of watering, molten steel that can 5-0 ℃ of degree of superheat of pouring temperature, unwraps filling pipe end while watering and ties cold steel and resistance to material and stop up the accident of watering unsuccessfully of opening that filling pipe end causes in the middle of effectively avoiding.In large bag, molten steel flows into tundish, if liquid steel temperature is low or the roasting bag of middle bag preheating is bad, will be at the cold steel of the outside knot of gear steel ring, and follow-up high-temperature molten steel arrives continuation to flow in filling pipe end, by the cold steel fusing producing, has avoided opening the accident of watering unsuccessfully above simultaneously.
2, the utility model can effectively avoid the stopper causing soon that filling pipe end upper end in casting cycle and near refractory material produce to coordinate the deterioration in accuracy of timing flow-controlling with filling pipe end, avoids causing the unsettled situation generation in the interior liquid level of crystallizer and flow field.
3, in normal casting cycle, molten steel constantly flows in filling pipe end through this device again, standing in the breach, what be washed erosion is gear steel ring device, reduced the erosion degree of molten steel to filling pipe end upper end, thereby guaranteed the flow control precision between stopper and filling pipe end upper end, guaranteed the stability in molten steel in mold liquid level and flow field.
Accompanying drawing explanation
Fig. 1 is the working state figure of continuous casting tundish in prior art;
Fig. 2 is the connection status figure of filling pipe end and brick cup in prior art;
Fig. 3 is the structure chart that keeps off steel ring in the utility model;
Fig. 4 is the use state diagram that keeps off steel ring in the utility model.
The specific embodiment
The utility model can supportingly be applicable to filling pipe end 13 structures of brick cup 18 with the tundish 12 of each style, be intended to prevent that casting machine from opening the filling pipe end 13 cold steel of knot of tundish 12 while watering or falling into foreign matter and cause opening the generation of watering failure scenarios, this device can effectively guarantee the stable casting of tundish 12 under molten steel low overheat, and greatly improves to open and water success rate.
Below with reference to accompanying drawing and preferred embodiment, technical solutions of the utility model are elaborated.
As shown in Figure 3, be the structure chart that keeps off steel ring in the utility model.
The profile of gear steel ring is frustum, and frustum middle part has columniform through hole 31, and through hole 31 is communicated with upper plane 32 and the lower plane 33 of frustum.
Through hole 31 diameters are greater than the external diameter 20mm (leave and smear fire clay gap) of filling pipe end 13, and lower plane 33 external diameters are identical with brick cup 18 external diameters, can supportingly be applicable to the brick cup 18 and filling pipe end 13 of various spline structure.Upper plane 32 external diameters are than the little 50mm of lower plane 33 external diameter, and the object that designs and produces into frustum is in installing and using, and bottom can be embedded in the refractory material 16 of tundish 12 better, strengthen stressedly, avoid keeping off steel ring in use procedure and float in molten steel.
Gear steel ring is pressed and is made by machine by magnesia and graphite, and its composition, according to weight percent meter, comprising: magnesium oxide particle 82%, graphite 14%, 4% adhesive.Adhesive is selected phenolic resins, Lauxite, epoxy resin, unsaturated polyester resin, ployisocyanate, the two fat of acrylic acid.
As shown in Figure 4, be the use state diagram that keeps off steel ring in the utility model.
In the utility model, the installation method of gear steel ring is as follows:
Step 1: after brick cup 18 and the filling pipe end 13 of tundish 12 are installed and finished, will smear fire clay along face and the filling pipe end outside that exceeds brick cup 18 height on through hole 31 inside, brick cup 18;
Step 2: the through hole 31 of gear steel ring is inserted in to filling pipe end 13, and lower plane 33 is pressed on brick cup 18, the space between filling pipe end 13 and through hole 31 is filled with fire clay and is floating;
Step 3: be filled into gear steel ring exterior circumferential with refractory material 16, reinforce solidly, the upper plane 32 of gear steel ring is higher than the height 40mm of refractory material 16.
Embodiment mono-
The tundish 12 of Wide and Thick Slab casting machine production line, before not using gear steel ring, is opened while watering and often because molten steel overheat is low, is caused filling pipe end 12 upper ends to tie cold steel, or the roasting refractory material 16 obstruction filling pipe ends 12 that come off that wrap of preheating, causes the accident of watering unsuccessfully of opening.After installing and using gear steel ring, casting machine open water per season success rate by before 96% rise to 99.5%, produced very considerable economic benefit.
Embodiment bis-
The normal direct casting of Wide and Thick Slab casting machine production line 20 hours, tundish 12 is not before being used gear steel ring, after often occurring to cast 10 hours, filling pipe end 13 upper end refractory materials 16 are because molten steel washes away erosion, cause that stopper 15 coordinates the situation of timing flow-controlling shakiness with filling pipe end 13, the interior level fluctuation of crystallizer 14 is by ± expand to gradually ± 6mm of 2mm; After installing and using gear steel ring, the interior level fluctuation of crystallizer 14 within all can be stabilized in ± 3mm, has reached internal class level of control in 20 hours casting times, has further promoted the quality of strand.
Claims (4)
1. a tundish that is provided with gear steel ring, comprises filling pipe end and brick cup, it is characterized in that: also comprise gear steel ring, the profile of described gear steel ring is frustum, and described frustum middle part has columniform through hole, and described through hole is communicated with upper plane and the lower plane of described frustum; Described gear steel ring is sleeved on described filling pipe end by described through hole, and described lower plane is pressed on described brick cup; Space between described filling pipe end and described through hole is filled with fire clay; The outside of described frustum is surrounded by refractory material.
2. the tundish that is provided with as claimed in claim 1 gear steel ring, is characterized in that: described through-hole diameter is greater than the external diameter 20mm of described filling pipe end, described lower plane external diameter is identical with brick cup external diameter.
3. the tundish that is provided with as claimed in claim 1 gear steel ring, is characterized in that: described upper plane external diameter is than the little 50mm of described lower plane external diameter.
4. the tundish that is provided with as claimed in claim 1 gear steel ring, is characterized in that: described upper plane exceeds described refractory material 40mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395161.0U CN203956075U (en) | 2014-07-17 | 2014-07-17 | Be provided with the tundish of gear steel ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395161.0U CN203956075U (en) | 2014-07-17 | 2014-07-17 | Be provided with the tundish of gear steel ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203956075U true CN203956075U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420395161.0U Active CN203956075U (en) | 2014-07-17 | 2014-07-17 | Be provided with the tundish of gear steel ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107907A (en) * | 2014-07-17 | 2014-10-22 | 内蒙古包钢钢联股份有限公司 | Molten steel baffle ring, tundish with same and installation method of tundish |
-
2014
- 2014-07-17 CN CN201420395161.0U patent/CN203956075U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107907A (en) * | 2014-07-17 | 2014-10-22 | 内蒙古包钢钢联股份有限公司 | Molten steel baffle ring, tundish with same and installation method of tundish |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |