CN201231312Y - Tundish cover - Google Patents
Tundish cover Download PDFInfo
- Publication number
- CN201231312Y CN201231312Y CNU2008200685507U CN200820068550U CN201231312Y CN 201231312 Y CN201231312 Y CN 201231312Y CN U2008200685507 U CNU2008200685507 U CN U2008200685507U CN 200820068550 U CN200820068550 U CN 200820068550U CN 201231312 Y CN201231312 Y CN 201231312Y
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- Prior art keywords
- side plate
- board
- working lining
- top board
- insulation layer
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Abstract
The utility model relates to a steelmaking continuous casting tundish cover which comprises a steel structure body, a thermal insulating layer and working layers. The tundish cover is characterized in that the steel structure body comprises a front board, a right board, a rear board, a left board and a cover board; the cover board is provided with 2-5 holes, the second working layer is poured around the hole at the lower end face of the cover board, the material of the second working layer adopts steel fiber porzite casting material; a first working layer cavity is enclosed by the second working layer, as well as the lower parts of the left board, the rear board, the right board and the front board and is arranged below the cover board, the first working layer is positioned in the first working layer cavity, and the material of the first working layer adopts zirconic ceramic fiber; a thermal insulating layer cavity is enclosed by the upper parts of the left board, the rear board, the right board, the front board and is arranged above the cover board, the thermal insulating layer is poured in the thermal insulating layer cavity and leaves holes at the holes of the cover board, and the material of the thermal insulating layer adopts high alumina cement casting material. The utility model has the advantages of good thermal insulating effect and long service life.
Description
Technical field
The utility model belongs to casting fused mass field of containers, particularly a kind of steel-making continuous casting tundish clad.
Background technology
In recent years, along with the metallurgical function of tundish is constantly strengthened, tundish develops towards the multi-functional role relevant with quality from the role of original single molten steel distributor.Continuous casting tundish clad mainly plays molten steel in the isolated tundish bag and extraneous heat exchange, play insulation and guarantee the effects such as cleanliness factor of molten steel, also can play protection simultaneously and water the steel device and improve effect such as continuous casting execute-in-place environment.The quality of continuous casting tundish clad behaviour in service directly has influence on the output and the quality of continuous casting steel.
The continuous casting tundish clad of steel mill's use mainly contains following two kinds of forms at home at present: 1) full cast steel or full cast iron tundish clad form.Adopt full steel-casting to make the tundish clad, generally use several water time after, cover plate is except that surperficial vigorous oxidation, steel bonding, main is the whole gross distortion of cover plate, warpage, has so just weakened the heat insulation effect of clad, and influences operational movement about the stopper.Adopt the tundish clad of full steel-casting shorter its service life, not only the spare parts consumption amount is big, and the more important thing is has influenced the normal running of watering steel.The steel mill that has once used the heat-resisting spheroidal graphite cast-iron of too high silicon to make the tundish clad, because ironcasting fragility is big, only used a back shroud just to crack, whole immediately clad cover plate fracture.Therefore the material of the also uncomfortable cooperation tundish of heat-resisting cast iron clad is used.2) the tundish clad form of metal-castable refractory composite construction.The mainly damage form of tundish clad of metal-castable refractory composite construction has: (1) clad metal edge frame is ablated; (2) clad metal edge frame flexural deformation; (3) the castable refractory cover layer peels off.Wherein, the clad metal edge frame is ablated and the bending of clad frame is the main form of clad breakage, and is that association occurs.The clad castable refractory is tectal, and to peel off often with the frame localized delamination be starting point and constantly expansion, develops into finally that clad is large-area to be peeled off.The tectal large tracts of land of clad castable refractory is peeled off and is not only caused the clad heat-insulating property to descend and influence its insulation safeguard function, falls piece simultaneously and also can cause stopping up the casting mouth of a river and influence holding of continuous casting billet and water.
Summary of the invention
The purpose of this utility model is to provide that a kind of thermal and insulating performance is good, the tundish clad of long service life.
To achieve these goals, the technical solution of the utility model is: the tundish clad, and it comprises steel structure body, thermal insulation layer, working lining; It is characterized in that: steel structure body comprises preceding side plate, right side plate, back side plate, left side plate, top board; Weld on corresponding respectively front, the right, back, the left side with top board, the middle part of preceding side plate, right side plate, back side plate, left side plate, end is corresponding respectively about preceding side plate welds with left side plate, right side plate, and end is corresponding respectively about back side plate welds with left side plate, right side plate; Top board is provided with 2～5 holes, is cast with second working lining around the hole of the lower surface of top board, and the material of second working lining is the steel fibre mullite pouring material; The below of top board surrounds the first working lining chamber by the bottom and second working lining of preceding side plate, right side plate, back side plate, left side plate, and first working lining is positioned at the first working lining chamber, and the material of first working lining is for containing the zircon ceramic fiber; The top of top board surrounds the thermal insulation layer chamber by the top of preceding side plate, right side plate, back side plate, left side plate, and thermal insulation layer is cast in the thermal insulation layer chamber and place, the hole on top board leaves the hole, and the material of thermal insulation layer is low cement high alumina castable.
The beneficial effects of the utility model are:
1, steel structure body is in light weight, and good rigidly, thermal deformation resistant ability are strong, long service life, service life 〉=500 stove.Existing cast steel structure clad about 300 stoves average life, existing material feeding form clad about 100 stoves average life that water.
2, arcuate structure is adopted in the upper end of main gusset, preceding side plate, right side plate, back side plate, left side plate, has offset the long-term bearing down that produces because of the gravity effect that uses in clad middle part.
3, the top board upper surface is welded with main gusset, secondary gusset constitutes " well " font combination beam, has strengthened the stability between the steel construction.
4, adopted and contained the zircon ceramic fiber, thereby make the heat preservation and insulation of clad good, both improve on-the-spot operating environment, reduced the tundish radiation loss, simultaneously, because it is good to contain zircon ceramic fiber thermal shock resistance, can not peel off during use, fall piece, thereby can not produce the clad Chang Yin that generally waters the material feeding form material feeding that falls and fall piece and cause stopping up the casting mouth of a river, cause to open and water failure or connect the generation of watering the interruption accident.
5, the hole of the lower surface of top board (stopper hole, baking hole, long nozzle hole, peep hole etc.) around be cast with second working lining, material is the steel fibre mullite pouring material; Good, the anti-rapid heat cycle ability of anti-scour property is strong.
6, the material of thermal insulation layer adopts low cement high alumina castable, hangs down cement high alumina castable intensity height, can improve the bulk strength of clad, slows down the oxide etch of top board and " well " font combination beam.
7, good seal performance, heat preservation and insulation is strong, long service life, comprehensive price ratio height has improved production scene operating environment (clad upper surface operating temperature≤200 ℃), has reduced labor intensity.
8, safe and reliable, can not cause the clad that generally waters the material feeding form to cause holding the generation of watering failure or even watering the interruption accident because of falling piece.
Description of drawings
Fig. 1 is plan structure figure of the present utility model;
Fig. 2 is the cutaway view of Fig. 1 along A-A;
Fig. 3 is the cutaway view of Fig. 1 along B-B;
Fig. 4 is the plan structure figure of steel structure body of the present utility model;
Fig. 5 is the cutaway view of Fig. 4 along C-C;
Fig. 6 is the cutaway view of Fig. 4 along D-D;
Fig. 7 is moulding process first step figure of the present utility model;
Fig. 8 is moulding process second block diagram of the present utility model;
Fig. 9 is moulding process third step figure of the present utility model;
Figure 10 is moulding process the 4th block diagram of the present utility model;
Among the figure: the 1-steel structure body, 2-hangs down cement high alumina castable, 3-peep hole, 4-stopper hole, 5-contains the zircon ceramic fiber, 6-steel fibre mullite pouring material (or claiming mullite steel fiber castable), side plate before the 7-, the secondary gusset of 8-, the 9-main gusset, 10-right side plate, side plate behind the 11-, 12-left side plate, 13-top board, 14-hanger, 15-Y type anchoring piece, 16-thermal insulation layer chamber, the 17-first working lining chamber, the outer bed die of 18-, the 19-second working lining chamber, 20-mold.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the tundish clad, it comprises steel structure body, thermal insulation layer, working lining; Steel structure body 1 comprises preceding side plate 7, right side plate 10, back side plate 11, left side plate 12, top board 13, hanger 14, secondary gusset 8, main gusset 9; Before the middle part of side plate 7, right side plate 10, back side plate 11, left side plate 12 corresponding respectively with top board 13 front, the right, back, (left side is the left side among Fig. 4 in left side welding, the right side is the right, go up and be the front, be down the back), end is corresponding respectively about preceding side plate 7 welds with left side plate 12, right side plate 10, and end is corresponding respectively about back side plate 11 welds with left side plate 12, right side plate 10; Top board 13 is provided with 2～5 holes, and (a plurality of holes constitute holes such as corresponding stopper hole, baking hole, long nozzle hole, peep hole; Be 2 holes in the present embodiment, be respectively stopper hole 4, peep hole 3), be cast with second working lining around the hole of the lower surface of top board 13, the material of second working lining is a steel fibre mullite pouring material (or claiming mullite steel fiber castable) 6; The below of top board 13 surrounds the first working lining chamber, 17, the first working linings by the bottom of preceding side plate 7, right side plate 10, back side plate 11, left side plate 12 and second working lining and is positioned at the material of the first working lining chamber, 17, the first working linings for containing zircon ceramic fiber 5; The top of top board 13 surrounds thermal insulation layer chamber 16 by the top of preceding side plate 7, right side plate 10, back side plate 11, left side plate 12, and thermal insulation layer is cast in the thermal insulation layer chamber 16 and place, the hole on top board 13 leaves the hole, and the material of thermal insulation layer is low cement high alumina castable 2.
The upper end of side plate 7, right side plate 10, back side plate 11, left side plate 12 is arc before described.
Described top board 13 upper surfaces are welded with main gusset 9 (among Fig. 4, Fig. 5 being 3), secondary gusset 8 constitutes " well " font combination beam, and the upper end of main gusset 9 is an arc.
Inboard upper surface, the lower surface, place, hole of described top board 13 is welded with Y type anchoring piece 15 respectively.
Be welded with hanger 14 (being 4 altogether among Fig. 4) respectively on side plate 7, the back side plate 11 before described.
The thickness of described thermal insulation layer (promptly low cement high alumina castable) is 30～50mm.
The thickness of described first working lining (promptly containing the zircon ceramic fiber), second working lining (being the steel fibre mullite pouring material) is 120～150mm.
The width of described second working lining is 100～120mm (being the thickness of steel fibre mullite pouring material).
Moulding process: as Fig. 7, Fig. 8, Fig. 9, shown in Figure 10, the utility model in the preparation should be at first welds the steel structure body of tundish clad, be welded with Y type anchoring piece 15 respectively in inboard upper surface, the lower surface, place, hole of top board 13 then, bed die, outer bed die 18 in install at face place, top board 13 lower end again, interior bed die, the outer bed die 18 formations second working lining chamber 19 (as shown in Figure 7); Cast steel fibre mullite pouring material (as: sky, Wuhan becomes furnace refractory stove engineering Co., Ltd to produce) in the second working lining chamber 19, steel fibre mullite pouring material natural curing demoulding after a day (as shown in Figure 8); What thick 120～150mm was installed in the first working lining chamber 17 then contains zircon ceramic fiber (form with module is installed, as: the sky, Wuhan becomes furnace refractory stove engineering Co., Ltd to produce) (as shown in Figure 9); After containing the zircon ceramic fiber and installing, with tundish clad steel construction turn-over, install mould 20 again at face place, top board 13 upper end (when the cement high alumina castable is hanged down in cast, leave the hole) (as shown in figure 10), the low cement high alumina castable of cast one deck (as: sky, Wuhan becomes furnace refractory stove engineering Co., Ltd to produce) in the space of cover top surface and combination beam formation, after the natural curing three days, can toast, water steel (as shown in Figure 2) with tundish.
Now illustrate: 1, adopt to contain the zircon ceramic fiber in conjunction with Fig. 2, has good thermal and insulating performance, not only can reduce the operating temperature of tundish clad steel construction effectively, reduce the metal edge frame deformation tendency, the more important thing is because it has good anti-thermal shock stability, fiber in use can not ftracture, peel off, and more can not go out phenomenon cast material and often fall piece like that and cause stopping up the mouth of a river and influence continuous casting production; And, further improve fibre strength and slag resistance containing the anti-slag coating of zircon ceramic fiber surface brushing one bed thickness 3～5mm.2, materials such as steel fibre mullite pouring material employing high-quality bauxite clinker and mullite are primary raw material, and it is the main mine phase that matrix is formed with corundum, mullite, and the hydration one cohesion coupling system of forming with pure calcium aluminate cement and compound ultra micro powder is a bond; Characteristics are that application property is good, intensity height, good thermal shock stability; As the through-hole structure of stopper hole, baking hole, long nozzle hole, peep hole, can avoid the middle clad of general type to cause the ablation of steel construction because of burning with anger at this position.
Claims (7)
1. tundish clad, it comprises steel structure body, thermal insulation layer, working lining; It is characterized in that: steel structure body (1) comprises preceding side plate (7), right side plate (10), back side plate (11), left side plate (12), top board (13); Weld on corresponding respectively front, the right, back, the left side with top board (13), the middle part of preceding side plate (7), right side plate (10), back side plate (11), left side plate (12), end is corresponding respectively about preceding side plate (7) welds with left side plate (12), right side plate (10), and end is corresponding respectively about back side plate (11) welds with left side plate (12), right side plate (10); Top board (13) is provided with 2～5 holes, is cast with second working lining around the hole of the lower surface of top board (13), and the material of second working lining is the steel fibre mullite pouring material; The below of top board (13) surrounds the first working lining chamber (17) by the bottom and second working lining of preceding side plate (7), right side plate (10), back side plate (11), left side plate (12), first working lining is positioned at the first working lining chamber (17), and the material of first working lining is for containing the zircon ceramic fiber; The top of top board (13) surrounds thermal insulation layer chamber (16) by the top of preceding side plate (7), right side plate (10), back side plate (11), left side plate (12), thermal insulation layer is cast in the thermal insulation layer chamber (16) and place, the hole on top board (13) leaves the hole, and the material of thermal insulation layer is low cement high alumina castable.
2. tundish clad according to claim 1 is characterized in that: the upper end of side plate (7), right side plate (10), back side plate (11), left side plate (12) is arc before described.
3. tundish clad according to claim 1 is characterized in that: described top board (13) upper surface is welded with main gusset (9), secondary gusset (8) constitutes " well " font combination beam, and the upper end of main gusset (9) is an arc.
4. tundish clad according to claim 1 is characterized in that: inboard upper surface, the lower surface, place, hole of described top board (13) is welded with Y type anchoring piece (15) respectively.
5. tundish clad according to claim 1 is characterized in that: the thickness of described thermal insulation layer is 30～50mm.
6. tundish clad according to claim 1 is characterized in that: the thickness of described first working lining, second working lining is 120～150mm.
7. tundish clad according to claim 1 is characterized in that: the width of described second working lining is 100～120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200685507U CN201231312Y (en) | 2008-07-18 | 2008-07-18 | Tundish cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200685507U CN201231312Y (en) | 2008-07-18 | 2008-07-18 | Tundish cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201231312Y true CN201231312Y (en) | 2009-05-06 |
Family
ID=40617687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200685507U Expired - Fee Related CN201231312Y (en) | 2008-07-18 | 2008-07-18 | Tundish cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201231312Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632229A (en) * | 2012-04-27 | 2012-08-15 | 宜兴市龙宸炉料有限公司 | Improved tundish cover |
| CN102672153A (en) * | 2012-04-26 | 2012-09-19 | 莱芜钢铁集团有限公司 | Burner seal cover and application thereof |
| CN106001525A (en) * | 2016-06-27 | 2016-10-12 | 宜兴市龙宸炉料有限公司 | Novel long-life heat-preservation continuous casting tundish cover |
| CN109396407A (en) * | 2018-12-28 | 2019-03-01 | 江苏嘉耐高温材料有限公司 | A kind of high life tundish cover |
| CN110064741A (en) * | 2019-06-10 | 2019-07-30 | 成渝钒钛科技有限公司 | Continuous cast crystallizer number lift technique in steel-making continuous casting |
-
2008
- 2008-07-18 CN CNU2008200685507U patent/CN201231312Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672153A (en) * | 2012-04-26 | 2012-09-19 | 莱芜钢铁集团有限公司 | Burner seal cover and application thereof |
| CN102632229A (en) * | 2012-04-27 | 2012-08-15 | 宜兴市龙宸炉料有限公司 | Improved tundish cover |
| CN106001525A (en) * | 2016-06-27 | 2016-10-12 | 宜兴市龙宸炉料有限公司 | Novel long-life heat-preservation continuous casting tundish cover |
| CN109396407A (en) * | 2018-12-28 | 2019-03-01 | 江苏嘉耐高温材料有限公司 | A kind of high life tundish cover |
| CN110064741A (en) * | 2019-06-10 | 2019-07-30 | 成渝钒钛科技有限公司 | Continuous cast crystallizer number lift technique in steel-making continuous casting |
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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: 20090506 |