CN203448667U - Double-roller immersive type flow distribution water opening for thin strip continuous casting - Google Patents
Double-roller immersive type flow distribution water opening for thin strip continuous casting Download PDFInfo
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- CN203448667U CN203448667U CN201320454773.8U CN201320454773U CN203448667U CN 203448667 U CN203448667 U CN 203448667U CN 201320454773 U CN201320454773 U CN 201320454773U CN 203448667 U CN203448667 U CN 203448667U
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Abstract
The utility model discloses a double-roller immersive type flow distribution water opening for thin strip continuous casting and belongs to the technical field of thin strip continuous casting. The double-roller immersive type flow distribution water opening comprises a flow-in section, a transition section and a flow-out section. The flow-out section is divided into a contraction section and an expanding section from top to bottom. The contraction rate of the cross section of the contraction section is 15%-30%. The expanding angle beta 1 between the width direction of the contraction section and a vertical face is 15-25 degrees. The contraction angle beta 2 between the length direction of the contraction section and the vertical face is between 2 degrees and 7 degrees. The expanding section is in a sector wedge-shaped flat type. The expanding angle gamma 1 between the width direction of the expanding section and the vertical face is 10-20 degrees. The contraction angle gamma 2 between the length direction and the vertical face is 2-5 degrees. A steel outlet is formed in the expanding section. The upper edge of the expanding section is lower than the upper edge of a flow distribution device. The expanding section, which is in a sector wedge-shaped flat type, of the immersive type flow distribution water opening is used for enabling steel liquid to flow into the flow distribution device and a molten pool stably, steel liquid level fluctuation is lowered, molten pool temperature is even, the cast rolling process can be smoothly carried out, and thin strip quality is guaranteed.
Description
Technical field
The utility model belongs to strip continuous casting technology field, particularly immersion cloth flowing water mouth for a kind of twin-roll thin strip continuous casting.
Background technology
Twin-roll thin strip continuous casting is that to take Casting Roller and the side seal board of one group of counter-rotating be crystallizer, with liquid molten steel, directly produces the new technology of 1 ~ 6mm thickness Thin Strip Steel; Compare advantages such as thering are flow process is short, production cost is low, energy-conserving and environment-protective with traditional continuous casting process; In addition because plastic deformation occurs liquid metal when solidifying, and within very short time, complete the transformation from liquid state to solid-state strip, thereby Cast Strip solidified structure is fine and close, has improved the mechanical property of Cast Strip.
Twin-roll thin strip continuous casting technique is the strip casting process that and traditional continuous casting have larger difference, its technical process is that liquid molten steel flows into distributor by tundish, by distributor, flow in current distribution device again, finally by current distribution device, flow in the molten bath between Casting Roller and side seal system, molten steel forms solidified shell gradually on the Casting Roller surface of two counter-rotatings, finally solidify, rolling, form the metal sheet band of certain thickness and width.
Application number is 200720012995.9 Patent Application Publication is applicable to the flat structure immersion cloth flowing water mouth of sheet blank continuous casting, this mouth of a river molten steel outflow end has five steel flow and portals, wherein tap under symmetrical two hole and bottom surface, mouth of a river center tapping hole is vertically downward larger, so this kind of mouth of a river is suitable for application in thin strap continuous casting casting; Application number is that the disclosed sheet blank continuous casting four holes abnormity immersion cloth flowing water mouths that are applicable to of 200520012263.0 patent application also have same characteristic.
Summary of the invention
The problems referred to above that the cloth flowing water mouth of using for existing twin-roll thin strip continuous casting exists, the utility model provides immersion cloth flowing water mouth for a kind of twin-roll thin strip continuous casting, adopt flat wedge shape immersion cloth flowing water mouth, make being flowed in current distribution device by mouth of a river tapping hole of molten steel uniform and stable, in current distribution device, cloth flows again, more evenly, steadily flows into casting molten bath by cloth discharge orifice.
Twin-roll thin strip continuous casting of the present utility model is comprised of inflow segment, changeover portion and outflow section with immersion cloth flowing water mouth; Flow out section and be divided into from top to bottom contraction section and expansion segment two parts, the shrinkage factor of contraction section cross-sectional area is 15 ~ 30%, the angle of flare of contraction section width and vertical plane
β 1be 15 ° ~ 25 °, the convergency of contraction section length direction and vertical plane
β 2between 2 ° ~ 7 °; Expansion segment is fan-shaped wedge shape flat, the angle of flare of expansion segment width and vertical plane
γ 1at 10 ° ~ 20 °, the convergent angle of expansion segment length direction and vertical plane
γ 2at 2 ° ~ 5 °; Expansion segment is provided with tapping hole, and the upper edge of expansion segment is lower than the upper edge of current distribution device.
On above-mentioned four sidewalls of expansion segment, be respectively provided with a tapping hole, or on two sidewalls of leptoprosopy, be respectively provided with a tapping hole and on base plate, be provided with a tapping hole; While being respectively provided with a tapping hole on four sidewalls, the upper edge of two tapping holes on wide is equal to or less than the upper edge of two tapping holes on leptoprosopy; Tapping hole cross-sectional area on each leptoprosopy sidewall
s 1cross-sectional area for contraction section bottom
s 350 ~ 75%, horizontal channelization angle
αbetween 150 ° ~ 180 °; Tapping hole cross-sectional area on each wide sidewall is the tapping hole cross-sectional area on each leptoprosopy sidewall
s 15 ~ 15%; While being respectively provided with a tapping hole on two leptoprosopy sidewalls and when base plate is provided with a tapping hole; Tapping hole cross-sectional area on each leptoprosopy sidewall
s 1cross-sectional area for contraction section bottom
s 350 ~ 75%, horizontal channelization angle
αbetween 150 ° ~ 180 °; The tapping hole cross-sectional area of bottom is the tapping hole cross-sectional area on each leptoprosopy sidewall
s 15 ~ 15%.
Current distribution device of the present utility model is divided into open-ended cavity epimere and wedge shape hypomere, and wedge shape hypomere bottom surface is circular arc type, on two wide of wedge shape hypomere, has 5 ~ 13 cloth discharge orifices, is respectively provided with at least one cloth discharge orifice on two leptoprosopy; Cloth discharge orifice on each wide is by middle part stepped distribution to both sides of wide, and the cross-sectional area of the cloth discharge orifice on each wide leniently reduces to both sides at the middle part of face gradually; The cross-sectional area of the cloth discharge orifice on leptoprosopy is less than the cross-sectional area of the minimum cloth discharge orifice on wide.
The cross section of above-mentioned cloth discharge orifice is rectangle, ellipse, key-way shape, and the axis of cloth discharge orifice and the angle between horizontal plane are between 0 ° ~ 30 °.
Above-mentioned wedge shape hypomere bottom is provided with two training dyke groups, each training dyke group is comprised of at least one training dyke, two groups of training dykes distribute in the bilateral symmetry at current distribution device center, the bottom of each training dyke is connected with current distribution device bottom surface, and two sides of each training dyke are connected with two wide of current distribution device respectively.
The top of above-mentioned training dyke is provided with projection or is not provided with projection, and bottom is provided with perforate or is not provided with perforate, and sidepiece is provided with perforate or is not provided with perforate.
The height of each above-mentioned training dyke is lower than the upper edge of the tapping hole on the leptoprosopy of immersion cloth flowing water mouth, higher than the upper edge of wide upper minimum cloth discharge orifice of current distribution device.
The end face of each above-mentioned training dyke is inner side near a side at current distribution device center, and opposite side is outside, and the height of outer point is greater than or equal to the height on summit, inner side, and the angle between end face and horizontal plane is 0 ° ~ 30 °.
When above-mentioned training dyke bottom or sidepiece are provided with perforate, the axis of perforate and the angle between horizontal plane are 0 ° ~ 30 °.
In two groups of above-mentioned training dykes, the distance between two training dykes that equate with current distribution device centre distance and the ratio of current distribution device overall length are between 0.25 ~ 0.75.
In above-mentioned current distribution device, the ratio of the cross-sectional area of the cross-sectional area of the cloth discharge orifice on leptoprosopy and wide upper minimum cloth discharge orifice is between 0.25 ~ 0.5; On wide, the ratio of the cross-sectional area of minimum cloth discharge orifice and the cross-sectional area of maximum cloth discharge orifice is between 0.25 ~ 0.75.
Above-mentioned training dyke thickness is between 15 ~ 40mm.
Above-mentioned cloth discharge orifice apart from the difference in height of current distribution device bottom between 10 ~ 40mm.
The inflow segment inner space of above-mentioned immersion cloth flowing water mouth is funnel type, and changeover portion inner space is column type.
The utility model has the advantage of by immersion cloth flowing water mouth, simplified thin strap continuous casting casting system structure, reduced transition bag, reduce strip casting process temperature drop, reduce tapping temperature; By expansion segment, slow down the flow velocity of molten steel in the mouth of a river, make molten steel flow out uniformly tapping hole; Utilize the fan-shaped wedge shape flat expansion segment of immersion cloth flowing water mouth that molten steel is flowed in current distribution device and molten bath stably, reduce molten steel liquid fluctuating, even bath temperature, guaranteed that casting-rolling technology carries out and strip quality smoothly.
Accompanying drawing explanation
Fig. 1 is the casting system structural representation of the twin-roll thin strip continuous casting in the utility model embodiment 1;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is immersion cloth flowing water mouth and the current distribution device structural representation in the utility model embodiment 1;
Fig. 4 is the immersion cloth flowing water mouth structure schematic diagram in the utility model embodiment 1;
Fig. 5 is that the A-A face of Fig. 4 cuts open figure;
Fig. 6 is the immersion cloth flowing water mouth structure schematic diagram in the utility model embodiment 2;
Fig. 7 is the current distribution device structural representation in the utility model embodiment 1;
Fig. 8 is the top view of Fig. 7;
Fig. 9 is the current distribution device structural representation in the utility model embodiment 2;
Figure 10 is the current distribution device structural representation in the utility model embodiment 3;
Figure 11 is the training dyke structural representation of the utility model embodiment 1;
Figure 12 is the training dyke structural representation of the utility model embodiment 3;
Figure 13 is the training dyke structural representation of the utility model embodiment 4;
Figure 14 is the training dyke structural representation of the utility model embodiment 4;
Figure 15 is the training dyke structural representation of the utility model embodiment 4;
Figure 16 is the training dyke structural representation of the utility model embodiment 5;
Figure 17 is the training dyke structural representation of the utility model embodiment 6;
Figure 18 is the training dyke structural representation of the utility model embodiment 7;
Figure 19 is the training dyke structural representation of the utility model embodiment 8;
In figure 1, tundish, 2, immersion cloth flowing water mouth, 3, current distribution device, 4, training dyke, 5, Casting Roller, 6, molten bath, 7, inflow segment, 8, changeover portion, 9, contraction section, 10, expansion segment, 11, leptoprosopy tapping hole, 12, wide tapping hole, 13, bottom tapping hole, 14, wide cloth discharge orifice, 15, leptoprosopy cloth discharge orifice
h, melt pool height,
h, current distribution device bottom surface and bath surface difference in height,
h 1, training dyke height,
l, current distribution device length,
l 1, symmetrical two training dykes distance,
k, under wide the cloth discharge orifice in current distribution device middle part along the difference in height with current distribution device inner bottom part,
k 1, under the cloth discharge orifice of wide of current distribution device end along the difference in height with current distribution device inner bottom part,
s 1, immersion cloth flowing water mouth expansion segment leptoprosopy sidewall on tapping hole cross-sectional area,
s 2, contraction section top cross-sectional area,
s 3, contraction section bottom cross-sectional area,
α, the tapping hole on sidewall horizontal channelization angle,
β 1, contraction section width and vertical plane the angle of flare,
β 2, contraction section length direction and vertical plane convergency,
γ 1, expansion segment width and vertical plane the angle of flare,
γ 2, expansion segment length direction and vertical plane the angle of flare.
The specific embodiment
The bandwidth of the Thin Strip Steel of the double roll strip casting mill casting adopting in this explanation embodiment is (width of Casting Roller is) 800 ~ 1300mm.
Little 160 ~ the 240mm of length of the Length Ratio Casting Roller of current distribution device in the utility model enforcement.
The difference in height of each cloth discharge orifice in the utility model embodiment on wide of current distribution device is between 10 ~ 50mm.
Cloth discharge orifice in the utility model embodiment on current distribution device leptoprosopy is lower than the highest cloth discharge orifice on wide, higher than wide upper minimum cloth discharge orifice.
In the utility model embodiment, water conservancy diversion dam thickness is 10 ~ 40mm.
In the utility model embodiment, contraction section height is 80 ~ 120mm; Expansion segment height is 120 ~ 180mm.
By casting system structure as shown in Figure 1, partial enlarged drawing as shown in Figure 2, comprises immersion cloth flowing water mouth 2 and current distribution device 3 to twin-roll thin strip continuous casting, and structure as shown in Figure 3; As shown in Figure 4, A-A face cuts open figure as shown in Figure 5 to immersion cloth flowing water mouth 3 structures, the outflow section of inflow segment 7, changeover portion 8 and flat, consists of; Flow out section and be divided into from top to bottom contraction section 9 and expansion segment 10 two parts;
The shrinkage factor of contraction section 9 cross-sectional areas is 30%, i.e. contraction section 9 bottom cross-sectional areas
s 3than contraction section 9 top cross-sectional areas
s 2little by 30%, the angle of flare of contraction section 9 widths and vertical plane
β 1be 15 °, the convergency of contraction section 9 length directions and vertical plane
β 2it is 7 °;
Expansion segment is respectively provided with a leptoprosopy tapping hole 11 and on base plate, is provided with a bottom tapping hole 13 on two sidewalls of leptoprosopy; Each leptoprosopy tapping hole 11 cross-sectional area
s 1cross-sectional area for contraction section 9 bottoms
s 375%, horizontal channelization angle
αit is 150 °; The cross-sectional area of bottom tapping hole 13 is the cross-sectional area of each leptoprosopy tapping hole 11
s 115%;
As shown in Figure 7, top view as shown in Figure 8, is divided into open-ended cavity epimere and wedge shape hypomere to current distribution device 3 structures, and wherein perforate cavity epimere inner space is cube; Wedge shape hypomere bottom surface is circular arc type, on two wide of wedge shape hypomere, has on 14, two leptoprosopy of 9 wide cloth discharge orifices and is respectively provided with 1 leptoprosopy cloth discharge orifice 15; Each wide cloth discharge orifice 14 is by middle part stepped distribution to both sides of wide of wedge shape hypomere, and level height reduces gradually; And the cross-sectional area of wide cloth discharge orifice 14 on each wide reduces to both sides gradually from the middle part of wide of wedge shape hypomere; The cross-sectional area of leptoprosopy cloth discharge orifice 15 is less than the cross-sectional area of wide minimum cloth discharge orifice 14;
The cross section of wide cloth discharge orifice 14 and leptoprosopy cloth discharge orifice 15 is rectangle, and the axis of each cloth discharge orifice and the angle between horizontal plane are 0 °;
Wedge shape hypomere bottom is provided with two training dyke groups, each training dyke group is comprised of 1 training dyke 4, two training dykes distribute in the bilateral symmetry at current distribution device 3 centers, the bottom of each training dyke 4 is connected with current distribution device 3 bottom surfaces, and two sides of each training dyke 4 are connected with two wide of the wedge shape hypomere of current distribution device 3 respectively;
Training dyke 4 structures as shown in figure 11; The height of each training dyke 4 is lower than the upper edge of the leptoprosopy tapping hole 11 of immersion cloth flowing water mouth 2, higher than the upper edge of wide upper wide minimum cloth discharge orifice 14 of current distribution device 3;
The end face of each training dyke 4 is inner side near a side at current distribution device 3 centers, and opposite side is outside, and the height of outer point equals the height on summit, inner side, and the angle between each training dyke 4 end faces and horizontal plane is 0 °;
Distance between two training dykes 4
l 1with the ratio of current distribution device 3 overall length L be 0.5;
The ratio of the cross-sectional area of current distribution device 3 cross-sectional areas of leptoprosopy cloth discharge orifice 15 and wide cloth discharge orifice 14 of minimum is 0.25; The ratio of the cross-sectional area of wide the cloth discharge orifice of cross-sectional area and maximum of minimum wide cloth discharge orifice is 0.25;
Each cloth discharge orifice is apart from the difference in height of current distribution device 3 bottoms |
k-k 1| be 20mm;
Twin-roll thin strip continuous casting by the using method of casting system is:
Immersion cloth flowing water mouth and current distribution device are arranged on to tundish below, and above between two Casting Rollers and side shield; From tundish, molten steel is flow into immersion cloth flowing water mouth, through flowing out section, from tapping hole, enter current distribution device, from the cloth discharge orifice of current distribution device, enter between two Casting Rollers, between Casting Roller and side shield, form molten bath; Start two Casting Rollers and press rightabout motion, melt pool height is
h, the difference in height of current distribution device bottom surface and bath surface is
h, training dyke height is
h 1, training dyke height
h 1 difference in height with current distribution device bottom surface and bath surface
hratio be 0.65, keep the height of bath surface higher than the upper edge of each tapping hole, and lower than the lower edge of contraction section, molten steel forms the Thin Strip Steel of 1 ~ 6mm thickness after Casting Roller casting.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 1, and difference is:
(1) expansion segment is respectively provided with a leptoprosopy tapping hole 11 on two sidewalls of leptoprosopy, is respectively provided with a wide tapping hole 12 on two sidewalls of wide; Structure as shown in Figure 6; The upper edge of wide tapping hole 12 is equal to or less than the upper edge of leptoprosopy tapping hole 11; Each leptoprosopy tapping hole cross-sectional area
s 1cross-sectional area for contraction section bottom
s 375%, horizontal channelization angle
αbetween 175 °; The cross-sectional area of each wide tapping hole is each leptoprosopy tapping hole cross-sectional area
s 115%;
(2) as shown in Figure 9, its each wide cloth discharge orifice 14 is by middle part stepped distribution to both sides of wide of wedge shape hypomere for current distribution device 3 structures, and level height raises gradually;
Twin-roll thin strip continuous casting uses the using method of casting system with embodiment 1.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 1, and difference is:
(1) shrinkage factor of contraction section cross-sectional area is 15%, and the angle of flare of contraction section width and vertical plane is 25 °, and the convergency of contraction section length direction and vertical plane is 2 °;
(2) angle of flare of expansion segment width and vertical plane is 10 °, and the convergent angle of length direction and vertical plane is 5 °;
(3) each leptoprosopy tapping hole cross-sectional area of expansion segment be contraction section bottom cross-sectional area 50%, horizontal channelization angle is 175 °; Bottom tapping hole cross-sectional area be leptoprosopy tapping hole cross-sectional area 5%;
(4) current distribution device structure as shown in figure 10, has 5 wide cloth discharge orifices on two wide of wedge shape hypomere, is respectively provided with 2 leptoprosopy cloth discharge orifices on two leptoprosopy; Each wide cloth discharge orifice is by middle part stepped distribution to both sides of wide of wedge shape hypomere, and level height reduces gradually; And the cross-sectional area of wide cloth discharge orifice on each wide reduces to both sides gradually from the middle part of wide of wedge shape hypomere; The cross-sectional area of leptoprosopy cloth discharge orifice is less than the cross-sectional area of wide minimum cloth discharge orifice;
(5) wedge shape hypomere bottom is provided with two training dyke groups, and each training dyke group is comprised of 2 training dykes, and two groups of training dykes bilateral symmetry at current distribution device center distributes;
(6) two symmetrical training dyke structures at close current distribution device center as shown in figure 12, a side near current distribution device center is inner side, opposite side is outside, and the height of outer point is higher than the height on summit, inner side, and the angle between each training dyke end face and horizontal plane is 30 °; Away from the height of the outer point of two of current distribution device center symmetrical training dykes, equal the height on summit, inner side, and the bottom of each training dyke is provided with perforate;
(7) two by the distance between 2 training dykes of paracentral symmetry
l 1with the ratio of current distribution device overall length L be 0.25; Distance between 2 training dykes of two deep symmetries
l 2with the ratio of current distribution device overall length L be 0.75;
(8) ratio of the cross-sectional area of the cross-sectional area of current distribution device leptoprosopy cloth discharge orifice and wide cloth discharge orifice of minimum is 0.5; The ratio of the cross-sectional area of wide the cloth discharge orifice of cross-sectional area and maximum of minimum wide cloth discharge orifice is 0.75;
(9) training dyke thickness is 20mm;
(10) each cloth discharge orifice is apart from the difference in height of current distribution device bottom |
k-k 1| be 40mm;
Twin-roll thin strip continuous casting is by the using method of casting system with embodiment 1, and difference is: (1) training dyke height
h 1 difference in height with current distribution device bottom surface and bath surface
hratio be 0.5; (2) molten steel forms the Thin Strip Steel of 1 ~ 6mm thickness after Casting Roller casting.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 1, and difference is:
(1) shrinkage factor of contraction section cross-sectional area is 20%, and the angle of flare of contraction section width and vertical plane is 20 °, and the convergency of contraction section length direction and vertical plane is 5 °;
(2) angle of flare of expansion segment width and vertical plane is 15 °, and the convergent angle of length direction and vertical plane is 3 °;
(3) expansion segment is respectively provided with a leptoprosopy tapping hole and on base plate, is provided with a bottom tapping hole on two sidewalls of leptoprosopy; Each leptoprosopy tapping hole cross-sectional area be contraction section bottom cross-sectional area 60%, horizontal channelization angle is 180 °; Bottom tapping hole cross-sectional area be leptoprosopy tapping hole cross-sectional area 10%;
(4) on two wide of the wedge shape hypomere of current distribution device, have 13 wide cloth discharge orifices, on two leptoprosopy, be respectively provided with 2 leptoprosopy cloth discharge orifices that cross-sectional area is equal;
(5) cross section of wide cloth discharge orifice and leptoprosopy cloth discharge orifice is oval, and the axis of each cloth discharge orifice and the angle between horizontal plane are 15 °;
(6) wedge shape hypomere bottom is provided with two training dyke groups, and each training dyke group is comprised of 3 training dykes, and two groups of training dykes bilateral symmetry at current distribution device center distributes;
(7) three of each group training dyke structures are respectively as shown in Figure 13,14 and 15; Being respectively top is that 30 ° of structures and top are provided with open-celled structure with projection and bottom with bulge-structure, top with projection and end face and horizontal plane angle;
In (8) two groups of training dykes, the distance between two the symmetrical training dykes that equate with current distribution device centre distance
l 1,
l 2with
l 3be respectively 0.25,0.5 and 0.75 with the ratio of current distribution device overall length L;
(9) ratio of the cross-sectional area of the cross-sectional area of current distribution device leptoprosopy cloth discharge orifice and wide cloth discharge orifice of minimum is 0.4; The ratio of the cross-sectional area of wide the cloth discharge orifice of cross-sectional area and maximum of minimum wide cloth discharge orifice is 0.5;
(10) training dyke thickness is 15mm;
Each cloth discharge orifice is apart from the difference in height of current distribution device bottom |
k-k 1| be 10mm;
Twin-roll thin strip continuous casting is by the using method of casting system with embodiment 1, and difference is: (1) training dyke height
h 1 difference in height with current distribution device bottom surface and bath surface
hratio be 0.35; (2) molten steel forms the Thin Strip Steel of 1 ~ 6mm thickness after Casting Roller casting.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 2, and difference is:
(1) each leptoprosopy tapping hole cross-sectional area of expansion segment be contraction section bottom cross-sectional area 50%, horizontal channelization angle
αit is 150 °; The cross-sectional area of each wide tapping hole is 5% of each leptoprosopy tapping hole cross-sectional area;
(2) each wide cloth discharge orifice of current distribution device is by middle part stepped distribution to both sides of wide of wedge shape hypomere, and level height reduces gradually;
(3) as shown in figure 16, top is provided with projection to training dyke structure, and bottom is provided with perforate, and the angle between end face and horizontal plane is 15 °; The axis of bottom opening and the angle between horizontal plane are 0 °;
Twin-roll thin strip continuous casting uses the using method of casting system with embodiment 2.
Embodiment 6
Twin-roll thin strip continuous casting is by casting system structure with embodiment 2, and difference is:
(1) each leptoprosopy tapping hole cross-sectional area of expansion segment be contraction section bottom cross-sectional area 60%, horizontal channelization angle
αit is 180 °; The cross-sectional area of each wide tapping hole is each leptoprosopy tapping hole cross-sectional area
s 110%;
(2) as shown in figure 17, top is provided with projection to training dyke structure, and bottom is provided with perforate, and the angle between end face and horizontal plane is 15 °, and the axis of bottom opening and the angle between horizontal plane are 30 °;
Twin-roll thin strip continuous casting uses the using method of casting system with embodiment 2.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 3, and difference is:
As shown in figure 18, top is provided with projection to training dyke structure, and sidepiece is provided with perforate, and the angle between end face and horizontal plane is 30 °, and the axis of sidepiece perforate and the angle between horizontal plane are 0 °;
Twin-roll thin strip continuous casting uses the using method of casting system with embodiment 3.
Twin-roll thin strip continuous casting is by casting system structure with embodiment 4, and difference is:
As shown in figure 19, top is provided with projection to training dyke structure, and sidepiece is provided with perforate, and the angle between end face and horizontal plane is 30 °, and the axis of sidepiece perforate and the angle between horizontal plane are 30 °;
Twin-roll thin strip continuous casting uses the using method of casting system with embodiment 4.
Claims (2)
1. an immersion cloth flowing water mouth for twin-roll thin strip continuous casting, is comprised of inflow segment, changeover portion and outflow section; It is characterized in that described outflow section is divided into contraction section and expansion segment two parts from top to bottom, the shrinkage factor of contraction section cross-sectional area is 15 ~ 30%, the angle of flare of contraction section width and vertical plane
β 1be 15 ° ~ 25 °, the convergency of contraction section length direction and vertical plane
β 2between 2 ° ~ 7 °; Expansion segment is fan-shaped wedge shape flat, the angle of flare of expansion segment width and vertical plane
γ 1at 10 ° ~ 20 °, the convergent angle of expansion segment length direction and vertical plane
γ 2at 2 ° ~ 5 °; Expansion segment is provided with tapping hole, and the upper edge of expansion segment is lower than the upper edge of current distribution device.
2. immersion cloth flowing water mouth for a kind of twin-roll thin strip continuous casting according to claim 1, it is characterized in that being respectively provided with a tapping hole on described four sidewalls of expansion segment, or on two sidewalls of leptoprosopy, be respectively provided with a tapping hole and on base plate, be provided with a tapping hole; While being respectively provided with a tapping hole on four sidewalls, the upper edge of two tapping holes on wide is equal to or less than the upper edge of two tapping holes on leptoprosopy; Tapping hole cross-sectional area on each leptoprosopy sidewall
s 1cross-sectional area for contraction section bottom
s 350 ~ 75%, horizontal channelization angle
αbetween 150 ° ~ 180 °; Tapping hole cross-sectional area on each wide sidewall is the tapping hole cross-sectional area on each leptoprosopy sidewall
s 15 ~ 15%; While being respectively provided with a tapping hole on two leptoprosopy sidewalls and when base plate is provided with a tapping hole; Tapping hole cross-sectional area on each leptoprosopy sidewall
s 1cross-sectional area for contraction section bottom
s 350 ~ 75%, horizontal channelization angle
αbetween 150 ° ~ 180 °; The tapping hole cross-sectional area of bottom is the tapping hole cross-sectional area on each leptoprosopy sidewall
s 15 ~ 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454773.8U CN203448667U (en) | 2013-07-29 | 2013-07-29 | Double-roller immersive type flow distribution water opening for thin strip continuous casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454773.8U CN203448667U (en) | 2013-07-29 | 2013-07-29 | Double-roller immersive type flow distribution water opening for thin strip continuous casting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057077A (en) * | 2014-07-08 | 2014-09-24 | 华耐国际（宜兴）高级陶瓷有限公司 | High-pulling-speed sheet billet immersion-type water opening |
| CN107552765A (en) * | 2017-08-11 | 2018-01-09 | 徐州东力锻压机械有限公司 | A kind of stalk for being used to cast |
| CN109570482A (en) * | 2018-12-06 | 2019-04-05 | 莱芜钢铁集团银山型钢有限公司 | A kind of crystallizer submersed nozzle and application method of the casting of Hot Metal in Beam Blank single-point unequal protection |
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2013
- 2013-07-29 CN CN201320454773.8U patent/CN203448667U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057077A (en) * | 2014-07-08 | 2014-09-24 | 华耐国际（宜兴）高级陶瓷有限公司 | High-pulling-speed sheet billet immersion-type water opening |
| CN107552765A (en) * | 2017-08-11 | 2018-01-09 | 徐州东力锻压机械有限公司 | A kind of stalk for being used to cast |
| CN107552765B (en) * | 2017-08-11 | 2020-07-28 | 徐州东力锻压机械有限公司 | Be used for as cast stalk |
| CN109570482A (en) * | 2018-12-06 | 2019-04-05 | 莱芜钢铁集团银山型钢有限公司 | A kind of crystallizer submersed nozzle and application method of the casting of Hot Metal in Beam Blank single-point unequal protection |
| CN109570482B (en) * | 2018-12-06 | 2021-04-13 | 莱芜钢铁集团银山型钢有限公司 | Crystallizer submerged nozzle for single-point non-equilibrium protection casting of beam blank and using method |
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