CN108480609A - A kind of continuous casting Anti-blocking immersion nozzle - Google Patents
A kind of continuous casting Anti-blocking immersion nozzle Download PDFInfo
- Publication number
- CN108480609A CN108480609A CN201810295473.7A CN201810295473A CN108480609A CN 108480609 A CN108480609 A CN 108480609A CN 201810295473 A CN201810295473 A CN 201810295473A CN 108480609 A CN108480609 A CN 108480609A
- Authority
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- China
- Prior art keywords
- side opening
- arc
- radius
- continuous casting
- submersed nozzle
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- 238000007654 immersion Methods 0.000 title claims abstract description 40
- 238000009749 continuous casting Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 abstract description 18
- 239000010959 steel Substances 0.000 abstract description 18
- 239000010813 municipal solid waste Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 206010028980 Neoplasm Diseases 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention belongs to high-temperature molten steel continuous-casting arts, are related to a kind of continuous casting Anti-blocking immersion nozzle, including ontology, main aperture and side opening；The main aperture is located at the inside of ontology, and the both sides that side opening is located at ontology are connected to main aperture；The side opening is no less than a pair.Side opening is designed to that two side is expanded outwardly using angle [alpha] or by the arc of radius of r, and the bottom of side opening is expanded downwards by the arc of radius of R, and the lower part side opening of submersed nozzle is constituted with the side opening top with downward angle b.The Novel anti-blockage submersed nozzle can make molten steel during flowing through submersed nozzle side opening, non-metallic inclusion particles in molten steel flow directly out the side opening of submersed nozzle, it avoids the non-metallic inclusion in molten steel and collides with the side wall of submersed nozzle side opening and contact, to prevent field trash to be adhered on the side wall of side opening, it is effectively prevent the dross and clogging of submersed nozzle side opening, ensures that continuous casting is smoothed out production.
Description
Technical field
The invention belongs to high-temperature molten steel continuous-casting arts, are related to a kind of continuous casting Anti-blocking immersion nozzle.
Background technology
In high-temperature molten steel continuous casting, especially the high steel of continuous casting carbon aluminium-killed steel, aluminium content, the steel containing rare earth and
When the molten steel of Ti-containing steel, since there are more non-metallic inclusions in molten steel, these contain small non-metallic inclusion
For molten steel from during continuous casting production enters crystallizer by submersed nozzle, the field trash in molten steel is adhered to immersion water
On the side wall of mouth lower part straight wall type side opening, with the progress that molten steel is cast, it is adhered to the side wall of submersed nozzle lower part side opening
The amount of inclusions gradually increases, and forms dross, the side opening sectional area of submersed nozzle is caused to reduce, and side opening is blocked plug thing when serious
It blocks.The dross of submersed nozzle and blocking can cause pulling speed of continuous casting to reduce, or even stop pouring, and influence continuous casting.Therefore, people
Have been devoted to solve the blockage problem of the submersed nozzle of Steel Melt for Continuous Casting, some is using changing submersed nozzle bottom knot
Anti-blocking inner wall is arranged in submersed nozzle inner wall of main hole in structure, some propositions, and some increases anti-blocking cord in submersed nozzle main aperture,
Some changes the internal structure of submersed nozzle main aperture.But above-mentioned technical solution can not solve conventional submersion mouth of a river side opening knot
Tumor and blocking problem.
Invention content
Submersed nozzle side opening dross when the invention aims to solve slab, bloom and large round billet molten steel continuous casting,
Choked technique problem avoids the non-metallic inclusion in molten steel from being adhered on the side opening side wall of submersed nozzle, forms mouth of a river knot
Tumor and blocking.
The technical scheme is that：
A kind of continuous casting Anti-blocking immersion nozzle, including ontology 1, main aperture 2 and side opening 3；The main aperture 2 is located at ontology 1
Inside, the both sides that side opening 3 is located at ontology 1 are connected to main aperture 2；The side opening 3 is no less than a pair.
The side opening bottom 4 is the bottom of side opening 3；The side opening top 7 is the upper bottom edge of side opening 3, arc-shaped side 5
With r it is to expand outwardly the arc-shaped side to be formed for the side wall of side opening 3；Straight flange 6 is that the side wall of side opening 3 expands outwardly to be formed with angle [alpha]
Straight flange；Wherein, α is the angle of flare of the side wall of side opening 3；R is the side wall arc radius of side opening 3；R is the arc of side opening bottom 4
Radius.
The two side walls of the side opening 3 are expanded outwardly with the straight flange 6 of angle [alpha], and side opening bottom 4 is using R as the arc of radius
Expansion downwards is constituted the lower part side opening of submersed nozzle with the side opening top 7 with downward angle b, wherein 0 °<α<60 °, 10mm<
R<500mm, 0 °<b<30°.
The two side walls of the side opening 3 are expanded outwardly by the arc-shaped side 5 of radius of r, and side opening bottom 4 is using R as radius
Arc is expanded downwards, the lower part side opening for being constituted submersed nozzle at the top of the side opening with downward angle b 7, wherein 10mm<r<
500mm, 10mm<R<500mm, 0 °<b<30°.
The side opening 3 is one kind in rectangular opening, slotted eye or quasi- slotted eye；The both sides of quasi- slotted eye are straight
Line.
When the side opening 3 is a pair of of rectangle, α=20 °, R=50mm, b=15 °.
When the side opening 3 is a pair of of rectangle, r=50mm, R=60mm, b=14 °.
When the side opening 3 is a pair of of slotted eye, α=30 °, R=40mm, b=15 °.
When the side opening 3 is a pair of of slotted eye, r=45mm, R=55mm, b=13 °.
When the side opening 3 is an alignment slotted eye, α=25 °, R=60mm, b=16 °.
When the side opening 3 is an alignment slotted eye, r=55mm, R=45mm, b=16 °.
When the side opening 3 is two pairs of rectangles, α=23 °, R=50mm, b=14 °.
When the side opening 3 is two pairs of rectangles, r=55mm, R=55mm, b=15 °.
When the side opening 3 is two pairs of slotted eyes, α=28 °, R=48mm, b=12 °.
When the side opening 3 is two pairs of slotted eyes, r=60mm, R=55mm, b=16 °.
When the side opening 3 is two alignment slotted eye, α=50 °, R=50mm, b=15 °.
When the side opening 3 is two alignment slotted eye, r=50mm, R=60mm, b=13 °.
The beneficial effects of the invention are as follows：By the side opening for being designed to gradually expand by the side opening of submersed nozzle lower part, make
Molten steel is during flowing through submersed nozzle side opening, and under the action of inertia force, the non-metallic inclusion particles in molten steel are straight
The side opening of outflow submersed nozzle is connect, can be occurred to avoid the side wall of non-metallic inclusion and submersed nozzle side opening in molten steel
Making contact effectively prevent dross and the blocking of submersed nozzle side opening to prevent field trash to be adhered on the side wall of side opening
Phenomenon.The submersed nozzle of this structure, it is simple in structure, it is easily fabricated, slab quality can be improved, ensures that continuous casting is smooth
It carries out.
Description of the drawings
Fig. 1 is that there are two the immersion type water nozzle structure schematic diagrames of side opening for conventional tool.
Fig. 2 is the A-A direction views of the submersed nozzle of Fig. 1.
Fig. 3 is the side view of the submersed nozzle of Fig. 1.
Fig. 4 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 1.
Fig. 5 is the side view of Fig. 4.
Fig. 6 is the A-A direction views of Fig. 4.
The submersed nozzle side opening that Fig. 7 is Fig. 4 is the A-A direction views of circular arc type side wall.
Fig. 8 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 2.
Fig. 9 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 3.
Figure 10 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 4.
Figure 11 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 5.
Figure 12 is the immersion type water nozzle structure schematic diagram of the embodiment of the present invention 6.
Figure 13 is the A-A direction views of Figure 10 to Figure 12.
Figure 14 is that the submersed nozzle side opening of Figure 10 to Figure 12 is the A-A direction views of circular arc type side wall.
In figure：1 ontology；2 main apertures；3 side openings；4 side opening bottoms；5 arc-shaped sides；6 straight flanges；At the top of 7 side openings；α is side opening side wall
The angle of flare；R is side opening side wall arc radius；R is side opening bottom arc radius.
Specific implementation mode
Specific embodiments of the present invention are described in detail with reference to technical solution and attached drawing.
Novel anti-blockage submersed nozzle for sheet billet continuous casting：
Embodiment 1
As shown in Fig. 4, Fig. 5, Fig. 6, two side openings 3 of Anti-blocking immersion nozzle of the invention are rectangle.The immersion
The mouth of a river is made of ontology 1, main aperture 2 and two rectangular openings 3 in ontology lower sidewall, the two side walls of rectangular opening with angle [alpha]=
20 ° of straight flange 6 expands outwardly, as shown in Figure 6.
Side opening bottom 4 is expanded downwards by the arc of radius of R=50mm, and at the top of the side opening of b=15 ° of downward angle 7
The lower part side opening of submersed nozzle is constituted, as shown in Figure 4.
Embodiment 2
As shown in Fig. 4, Fig. 5, Fig. 7, two side openings 3 of Anti-blocking immersion nozzle of the invention are rectangle.The immersion
The mouth of a river is made of ontology 1, main aperture 2 and two rectangle side openings 3 in ontology lower sidewall, and the two side walls of rectangular opening are with radius r
The arc-shaped side 5 (Fig. 7) of=50mm expands outwardly, and side opening bottom 4 (Fig. 4) expands downwards by the arc of radius of R=60mm, and with
7 (Fig. 4) constitute the lower part side opening of submersed nozzle at the top of the side opening of b=14 ° of downward angle.
Embodiment 3
As shown in Fig. 4, Fig. 8, Fig. 6, two side openings 3 of Anti-blocking immersion nozzle lower part of the invention are ellipse.It should
Submersed nozzle is made of ontology 1, main aperture 2 and two slotted eyes 3 in ontology lower sidewall, the two side walls of slotted eye
It being expanded outwardly with the straight flange 6 (Fig. 6) of angle [alpha]=30 °, side opening bottom 4 (Fig. 4) expands downwards by the arc of radius of R=40mm,
And the lower part side opening of submersed nozzle is constituted with 7 (Fig. 4) at the top of the side opening of b=15 ° of downward angle.
Embodiment 4
As shown in Fig. 4, Fig. 8, Fig. 7, two side openings 3 of Anti-blocking immersion nozzle lower part of the invention are ellipse.It should
Submersed nozzle is made of ontology 1, main aperture 2 and two slotted eyes 3 in ontology lower sidewall, the two side walls of slotted eye
It is expanded outwardly by the arc-shaped side 5 (Fig. 7) of radius of r=45mm, side opening bottom 4 (Fig. 4) is downward as the arc of radius using R=55mm
Expansion, and constitute with 7 (Fig. 4) at the top of the side opening of b=13 ° of downward angle the lower part side opening of submersed nozzle.
Embodiment 5
It is oval subject to two side openings 3 of Anti-blocking immersion nozzle of the invention as shown in Fig. 4, Fig. 9, Fig. 5, i.e., it is accurate
The both sides of ellipse are straight line, are up and down circular arc.The submersed nozzle is by ontology 1, main aperture 2 and two in ontology lower sidewall
Quasi- slotted eye 3 forms, and the two side walls of quasi- slotted eye are expanded outwardly with the straight flange 6 (Fig. 6) of angle [alpha]=25 °, side opening bottom
4 (Fig. 4) expand downwards by the arc of radius of R=60, and constitute and immerse with 7 (Fig. 4) at the top of the side opening of b=16 ° of downward angle
The lower part side opening at the formula mouth of a river.
Embodiment 6 is oval subject to two side openings 3 of Anti-blocking immersion nozzle of the invention as shown in Fig. 4, Fig. 9, Fig. 6
Shape, i.e., quasi-elliptic both sides are straight line, are up and down circular arc.The submersed nozzle is by ontology 1, main aperture 2 and under this body sidewall
Two quasi- slotted eyes 3 in portion form, and the two side walls of quasi- slotted eye are outside by the arc-shaped side 5 (Fig. 7) of radius of r=55mm
Expansion, side opening bottom 4 (Fig. 4) expands downwards by the arc of radius of R=45mm, and at the top of the side opening of b=16 ° of downward angle
7 (Fig. 4) constitute the lower part side opening of submersed nozzle.
For bloom or the Anti-blocking immersion nozzle of large round billet continuous casting：
Embodiment 7
As shown in Figure 10, Figure 13,4 side openings 3 of Anti-blocking immersion nozzle of the invention are rectangle.The submersed nozzle
It is made of ontology 1, main aperture 2 and 4 rectangular openings 3 in ontology lower sidewall, the two side walls of rectangular opening are with angle [alpha]=23 °
Straight flange 6 (Figure 13) expands outwardly, and side opening bottom 4 (Figure 10) expands downwards by the arc of radius of R=50mm, and and downward angle
7 (Figure 10) constitute the lower part side opening of submersed nozzle at the top of b=14 ° of side opening.
Embodiment 8
As shown in Figure 10, Figure 14,4 side openings 3 of Anti-blocking immersion nozzle of the invention are rectangle.The submersed nozzle
It is made of ontology 1, main aperture 2 and two rectangle side openings 3 in ontology lower sidewall, the two side walls of rectangular opening are with r=55mm
The arc-shaped side 5 (Figure 13) of radius expands outwardly, and side opening bottom 4 (Figure 10) expands downwards by the arc of radius of R=55mm, and with
7 (Figure 10) constitute the lower part side opening of submersed nozzle at the top of the side opening of b=15 ° of downward angle.
Embodiment 9
As shown in Figure 11, Figure 13,4 side openings 3 of Anti-blocking immersion nozzle of the invention are ellipse.The immersion water
Mouthful be made of ontology 1, main aperture 2 and 4 slotted eyes 3 in ontology lower sidewall, the two side walls of slotted eye with angle [alpha]=
28 ° of straight flange 6 (Figure 13) expands outwardly, and side opening bottom 4 (Figure 11) expands downwards by the arc of radius of R=48mm, and with to
7 (Figure 11) constitute the lower part side opening of submersed nozzle at the top of the side opening of b=12 ° of lower angle.
Embodiment 10
As shown in Figure 11, Figure 14,4 side openings 3 of Anti-blocking immersion nozzle of the invention are ellipse.The immersion water
It mouthful is formed by ontology 1, main aperture 2 and in 4 of ontology lower sidewall oval side openings 3, the two side walls of slotted eye are with r=
60mm is that the arc-shaped side 5 (Figure 14) of radius expands outwardly, and side opening bottom 4 (Figure 11) expands downwards by the arc of radius of R=55mm
, and constitute with 7 (Figure 11) at the top of the side opening of b=16 ° of downward angle the lower part side opening of submersed nozzle.
Embodiment 11
As shown in Figure 12 and Figure 13, oval subject to 4 side openings 3 of Anti-blocking immersion nozzle of the invention.The immersion
The mouth of a river is made of ontology 1, main aperture 2 and 4 slotted eyes 3 in ontology lower sidewall, and the two side walls of slotted eye are with angle [alpha]
=50 ° of straight flange 6 (Figure 13) expands outwardly, and side opening bottom 4 (Figure 12) expands downwards by the arc of radius of R=50mm, and with
7 (Figure 12) constitute the lower part side opening of submersed nozzle at the top of the side opening of b=15 ° of downward angle.
Embodiment 12
It is oval subject to 4 side openings 3 of Anti-blocking immersion nozzle of the invention as shown in Figure 12, Figure 14.The immersion
The mouth of a river is formed by ontology 1, main aperture 2 and in 4 of ontology lower sidewall oval side openings 3, and the two side walls of slotted eye are with r=
50mm is that the arc-shaped side 5 (Figure 14) of radius expands outwardly, and side opening bottom 4 (Figure 12) expands downwards by the arc of radius of R=60mm
, and constitute with 7 (Figure 12) at the top of the side opening of b=13 ° of downward angle the lower part side opening of submersed nozzle.
Claims (7)
1. a kind of continuous casting Anti-blocking immersion nozzle, which is characterized in that including ontology (1), main aperture (2) and side opening (3)；Described
Main aperture (2) is located at the inside of ontology (1), and the both sides that side opening (3) is located at ontology (1) are connected to main aperture (2)；The side opening (3)
It is no less than a pair of；
The side opening bottom (4) is the bottom of side opening (3)；(7) are the upper bottom edge of side opening (3), arc at the top of the side opening
Shape side (5) is that the side wall of side opening (3) with r is to expand outwardly the arc-shaped side to be formed；Straight flange (6) is the side wall of side opening (3) with angle [alpha]
Expand outwardly the straight flange to be formed；Wherein, α is the angle of flare of the side wall of side opening (3)；R is the side wall arc radius of side opening (3)；R is
The arc radius of side opening bottom (4)；
The side opening (3) is one kind in rectangular opening, slotted eye or quasi- slotted eye；
The two side walls of the side opening (3) are expanded outwardly or outside as the arc-shaped side (5) of radius using r using the straight flange (6) of angle [alpha]
Expansion, side opening bottom (4) are expanded downwards by the arc of radius of R, and (7) are constituted immersion at the top of the side opening with downward angle b
The lower part side opening at the mouth of a river.
2. continuous casting Anti-blocking immersion nozzle according to claim 1, which is characterized in that two of the side opening (3)
Side wall is expanded outwardly with the straight flange (6) of angle [alpha], and side opening bottom (4) are expanded downwards by the arc of radius of R, and with downward angle b
Side opening at the top of (7) constitute submersed nozzle lower part side opening, wherein 0 °<α<60 °, 10mm<R<500mm, 0 °<b<30°.
3. continuous casting Anti-blocking immersion nozzle according to claim 1, which is characterized in that two of the side opening (3)
Side wall is expanded outwardly by the arc-shaped side (5) of radius of r, and side opening bottom (4) are expanded downwards by the arc of radius of R, and with downward
(7) constitute the lower part side opening of submersed nozzle at the top of the side opening of angle b, wherein 10mm<r<500mm, 10mm<R<500mm, 0 °<
b<30°。
4. continuous casting Anti-blocking immersion nozzle according to claim 2, which is characterized in that when the side opening (3) is one
When to rectangle, α=20 °, R=50mm, b=15 °；When the side opening (3) is a pair of of slotted eye, α=30 °, R=
40mm, b=15 °；When the side opening (3) is an alignment slotted eye, α=25 °, R=60mm, b=16 °.
5. continuous casting Anti-blocking immersion nozzle according to claim 3, which is characterized in that when the side opening (3) is one
When to rectangle, r=50mm, R=60mm, b=14 °；When the side opening (3) is a pair of of slotted eye, r=45mm, R=
55mm, b=13 °；When the side opening (3) is an alignment slotted eye, r=55mm, R=45mm, b=16 °.
6. continuous casting Anti-blocking immersion nozzle according to claim 2, which is characterized in that when the side opening (3) is two
When to rectangle, α=23 °, R=50mm, b=14 °；When the side opening (3) is two pairs of slotted eyes, α=28 °, R=
48mm, b=12 °；When the side opening (3) is two alignment slotted eye, α=50 °, R=50mm, b=15 °.
7. continuous casting Anti-blocking immersion nozzle according to claim 3, which is characterized in that when the side opening (3) is two
When to rectangle, r=55mm, R=55mm, b=15 °；When the side opening (3) is two pairs of slotted eyes, r=60mm, R=
55mm, b=16 °；When the side opening (3) is two alignment slotted eye, r=50mm, R=60mm, b=13 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295473.7A CN108480609B (en) | 2018-03-30 | 2018-03-30 | Continuous casting prevents blockking up immersion nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295473.7A CN108480609B (en) | 2018-03-30 | 2018-03-30 | Continuous casting prevents blockking up immersion nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108480609A true CN108480609A (en) | 2018-09-04 |
| CN108480609B CN108480609B (en) | 2020-02-11 |
Family
ID=63318059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810295473.7A Expired - Fee Related CN108480609B (en) | 2018-03-30 | 2018-03-30 | Continuous casting prevents blockking up immersion nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108480609B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906266A (en) * | 2020-08-21 | 2020-11-10 | 北京科技大学 | Method for inhibiting rare earth molten steel pouring nozzle from being blocked by pulse current |
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|---|---|---|---|---|
| CN111906266A (en) * | 2020-08-21 | 2020-11-10 | 北京科技大学 | Method for inhibiting rare earth molten steel pouring nozzle from being blocked by pulse current |
| CN111906266B (en) * | 2020-08-21 | 2021-11-30 | 北京科技大学 | Method for inhibiting rare earth molten steel pouring nozzle from being blocked by pulse current |
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| Publication number | Publication date |
|---|---|
| CN108480609B (en) | 2020-02-11 |
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