CN105855529B - A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining - Google Patents
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining Download PDFInfo
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- CN105855529B CN105855529B CN201610400753.0A CN201610400753A CN105855529B CN 105855529 B CN105855529 B CN 105855529B CN 201610400753 A CN201610400753 A CN 201610400753A CN 105855529 B CN105855529 B CN 105855529B
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- 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
- B22D41/02—Linings
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Abstract
The present invention relates to a kind of air bricks of fine Argon Bubble of bottom blowing for tundish refining.Its technical solution is: being symmetrically provided with a row inclined-plane air hole (3) along the strip inclined-plane on refractory brick (1) top, inclined-plane air hole (3) is provided with the vertical air hole of a row (2) perpendicular to the strip inclined-plane, the upper plane of refractory brick (1)；It is provided in the lower part of refractory brick (1) for vent hole (4).It is communicated for vent hole (4) with each air hole in vertical air hole (2) and inclined-plane air hole (3), the center line of vertical air hole (2) and the center line of inclined-plane air hole (3) intersect with the center line for vent hole (4) respectively.For the centerline parallel for vent hole (4) in the long side of refractory brick (1), every number of rows amount of the inclined-plane air hole (3) is 2 ~ 10, and the quantity of the vertical air hole (2) is identical with every number of rows amount of inclined-plane air hole (3) or lacks 1.The present invention has the characteristics that structure is simple, convenient for safeguarding, the service life is long and using effect is good.
Description
Technical field
The air brick technical field that the invention belongs to refine for tundish.More particularly to it is a kind of for tundish refining
The air brick of the fine Argon Bubble of bottom blowing.
Background technique
Non-metallic inclusion content has significant shadow to the quality of steel in casting finished product, continuous casting semi-finished product or large-scale steel ingot
It rings.Therefore, the main task of iron and steel enterprise is to produce non-metallic inclusion (alumino-silicate, calcium aluminate and other complexity
Non-metallic inclusion) the alap finished product of content, to produce the requirement to ultrasonic examination or anti-hydrogen induced cracking
Increasing product, for shipbuilding, deepwater work metal platform, bridge construction, high altitude operation metal platform, petroleum and natural
The fields such as feed channel.
In metallurgical production process, ladle furnace is commonly used as purifier (such as RH, VD).Since tundish is as steel
The last one link during hydrometallurgy refining, in last decade, tundish metallurgy is had been a great concern.In smelting molten steel mistake
Cheng Zhong, rationally carrying out tundish metallurgy can be effectively removed non-metallic inclusion.Some researches show that by inside tundish
Barricade, dam and various filters are installed, or by blowing inert gas, non-metallic inclusion can be promoted to float to metal watch
Face is absorbed by the covering slag of metal surface.
In addition studies have shown that be blown into argon gas into molten steel, the gas of non-metallic inclusion, removal dissolution can be effectively removed
Body and reinforcing decarburization.Argon gas is blown into molten steel, the Argon Bubble of generation can be attached on non-metallic inclusion, and due to steel
There are pressure difference between liquid and bubble, this causes the non-metallic inclusion in molten steel that can float to the molten slag layer on molten steel surface.Molten steel
In small Argon Bubble can play the role of " small vacuum chamber ", the dissolved gas (H, N, O) in molten steel will be constantly passed in it, therewith
It floats and is discharged, to reduce the gas content in molten steel, improve steel quality.
" a kind of for removing the device of molten steel inclusion in continuous casting production " (CN203956070U) patented technology, passes through
With devices such as air curtain air brick, barricade and dams to reduce the inclusion content in continuous casting billet, air brick only plays air curtain
Effect, it is seldom to the contribution of refining effect, at the same need to be used cooperatively barricade and dam, structure is complicated, is unfavorable for safeguarding.
A kind of " steel-making tundish air brick " (CN204182900U) patented technology, is avoided by the design of self-cleaning device
The blocking of air hole virtually increases the structural complexity of equipment, it is difficult to production and maintenance.
Tundish Argon used at present is difficult to take into account easy structure and feature convenient for safeguarding with air brick.
Summary of the invention
The present invention is directed to overcome the deficiencies in the prior art, it is therefore an objective to provide that a kind of using effect is good, structure is simple, the service life is long
With the air brick of the fine Argon Bubble of bottom blowing for tundish refining convenient for safeguarding.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: the ontology of the air brick be cuboid fire resisting
Brick.Two long sides of plane are symmetrically equipped with strip inclined-plane along refractory brick, and two strip inclined-planes are symmetrically provided with a row inclined-plane
Air hole, the upper plane of refractory brick are provided with the vertical air hole of a row, and the vertical air hole of a row is located in two rows of inclined-planes air hole
Between at position.Be provided in the lower part of refractory brick for vent hole, it is described for vent hole in vertical air hole and inclined-plane air hole
Each air hole communicates.The center line of each vertical ventilative centerline hole and adjacent bevel surfaces air hole is located at same vertical guide, or
The center line of each vertical air hole and the perpendicular bisector of two adjacent inclined-plane air holes are located at same vertical guide.
The centerline parallel for vent hole in the long side of refractory brick, for vent hole center line away from refractory brick lower plane
Heighth=15 ~ 30mm is located on the perpendicular bisector of refractory brick broadside for the center of vent hole.
Every number of rows amount of the inclined-plane air hole is 2 ~ 10, and for inclined-plane air hole perpendicular to the strip inclined-plane, inclined-plane is saturating
The center line of stomata intersects with the center line for vent hole.
The quantity of the vertical air hole is identical as every number of rows amount of inclined-plane air hole or one few, in vertical air hole
Heart line intersects with the center line for vent hole.
The size of the refractory brick are as follows: lengthL=15~100mm；WidthB=65~95mm；HighlyH=85~115mm。
Height of the strip inclined-plane far from lower planeh 2 =60~90mm；Angle α=10 of the strip inclined-plane and upper plane ~
25°。
The diameter for vent holeD=10~20mm。
The diameter of the vertical air holed 1 =1.0~2.0mm；The pitch-row of vertical air holel 1 =(10 ~ 20)d 1 ；The inclined-plane
The diameter of air holed 2 =1.0 ~ 2.0mm, the pitch-row of inclined-plane air holel 2 =l 1 。
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art:
(1) it is logical to obtain 6 to 30 independent gases using two rows of inclined-plane air holes air hole vertical with a row by the present invention
Road can increase the surface area to interact between bubble and phase interface, and " gas can be formed on entire molten steel face when being blown argon gas
Body protective layer ", this is removal non-metallic inclusion (including the Miniature nonmetallic field trash less than 10 μm) most effective blowing side
Formula.
(2) present invention uses diameterd 1 The vertical air hole and diameter of=1.0 ~ 2.0mmd 2 The inclined-plane of=1.0 ~ 2.0mm is ventilative
Hole, and vertical air hole and inclined-plane air hole be in different directions distribution, can be blown out that range is wide and finely dispersed fine argon
Bubble, these Argon Bubbles are conducive to remove non-metallic inclusion, to reduce non-metallic inclusion in molten steel and gas
Content obtains the molten steel of high-cleanness, high, improves hot rolling and forges the mechanical property of steel, improves the conjunction of metal product ultrasonic inspection
Lattice rate improves the corrosion resistance of corrosion-resisting steel.
(3) main body of the invention is the refractory brick for being mounted on tundish bottom, and the air hole that refractory brick uses is circle
Hole, structure is simple, and easy to process, the easy to maintenance and service life is long.
Therefore, the present invention has the characteristics that structure is simple, convenient for safeguarding, the service life is long and using effect is good.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the left view schematic cross-sectional view of Fig. 1；
Fig. 3 is the schematic top plan view of Fig. 1；
Fig. 4 is another structural schematic diagram of the invention；
Fig. 5 is the schematic top plan view of Fig. 4.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and detailed description, not to the limit of its protection scope
System.
Embodiment 1
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.The ontology of the air brick is cuboid
Refractory brick (1).As shown in Figure 1, Figure 2 and Figure 3, two long sides of plane are symmetrically equipped with strip inclined-plane along refractory brick (1), and two
A strip inclined-plane is symmetrically provided with a row inclined-plane air hole (3), and the upper plane of refractory brick (1) is provided with the vertical air hole of a row (2),
The vertical air hole of one row (2) is located at the middle position of two rows of inclined-plane air holes (3).Gas supply is provided in the lower part of refractory brick (1)
Through-hole (4), it is described to be communicated for vent hole (4) with each air hole in vertical air hole (2) and inclined-plane air hole (3).Each
Vertical air hole (2) center line and the center line of adjacent bevel surfaces air hole (3) are located at same vertical guide.
As depicted in figs. 1 and 2, the centerline parallel for vent hole (4) is in the long side of refractory brick (1), for vent hole
(4) height of the center line away from refractory brick (1) lower planeh=18 ~ 22mm is located at refractory brick (1) width for the center of vent hole (4)
On the perpendicular bisector on side.
As shown in Figure 1, Figure 2 and Figure 3, every number of rows amount of the inclined-plane air hole (3) is 6, and inclined-plane air hole (3) is vertical
In the strip inclined-plane, the center line of inclined-plane air hole (3) intersects with the center line for vent hole (4).
As shown in Figure 1, Figure 2 and Figure 3, every number of rows amount phase of the quantity of the vertical air hole (2) and inclined-plane air hole (3)
Together, the center line of vertical air hole (2) intersects with the center line for vent hole (4).
As shown in Figure 1, Figure 2 and Figure 3, the size of the refractory brick (1) are as follows: lengthL=55~65mm；WidthB=75~85mm；
HighlyH=95~105mm。
As shown in Fig. 2, height of the strip inclined-plane far from lower planeh 2 =75~85mm；The strip inclined-plane and upper plane
Angle α=15 ~ 20 °.
As shown in Figure 1, the diameter for vent hole (4)D=14~18mm。
As shown in Figure 1, the diameter of the vertical air hole (2)d 1 =1.4~1.6mm；The pitch-row of vertical air hole (2)l 1 =
(14 ~ 16)d 1 ；The diameter of the inclined-plane air hole (3)d 2 =1.4 ~ 1.6mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Embodiment 2
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.In addition to following technical parameters, remaining is the same as real
Apply example 1:
For vent hole (4) center line away from the height of refractory brick (1) lower planeh=15~20mm。
Every number of rows amount of the inclined-plane air hole (3) is 2 ~ 5.
The size of the refractory brick (1) are as follows: lengthL=15~60mm；WidthB=65~80mm；HighlyH=85~100mm。
Height of the strip inclined-plane far from lower planeh 2 =60~75mm；Angle α=20 of the strip inclined-plane and upper plane ~
25°。
The diameter for vent hole (4)D=10~15mm。
The diameter of the vertical air hole (2)d 1 =1.0~1.4mm；The pitch-row of vertical air hole (2)l 1 =(10 ~ 14)d 1 ；Institute
State the diameter of inclined-plane air hole (3)d 2 =1.0 ~ 1.4mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Embodiment 3
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.In addition to following technical parameters, remaining is the same as real
Apply example 1:
For vent hole (4) center line away from the height of refractory brick (1) lower planeh=22~30mm。
Every number of rows amount of the inclined-plane air hole (3) is 7 ~ 10.
The size of the refractory brick (1) are as follows: lengthL=65~100mm；WidthB=85~95mm；HighlyH=105~115mm。
Height of the strip inclined-plane far from lower planeh 2 =82~90mm；Angle α=10 of the strip inclined-plane and upper plane ~
15°。
The diameter for vent hole (4)D=17~20mm。
The diameter of the vertical air hole (2)d 1 =1.6~2.0mm；The pitch-row of vertical air hole (2)l 1 =(16 ~ 20)d 1 ；Institute
State the diameter of inclined-plane air hole (3)d 2 =1.6 ~ 2.0mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Embodiment 4
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.The ontology of the air brick is cuboid
Refractory brick (1).As shown in Figure 4 and Figure 5, two long sides of plane are symmetrically equipped with strip inclined-plane, two items along refractory brick (1)
Shape inclined-plane is symmetrically provided with a row inclined-plane air hole (3), and the upper plane of refractory brick (1) is provided with the vertical air hole of a row (2), a row
Vertical air hole (2) is located at the middle position of two rows of inclined-plane air holes (3).It is provided in the lower part of refractory brick (1) for vent hole
(4), described to be communicated for vent hole (4) with each air hole in vertical air hole (2) and inclined-plane air hole (3).It is each vertical
The center line of air hole (2) and the perpendicular bisector of two adjacent inclined-plane air holes (3) are located at same vertical guide.
As shown in Figure 4 and Figure 5, the centerline parallel for vent hole (4) is in the long side of refractory brick (1), for vent hole
(4) height of the center line away from refractory brick (1) lower planeh=18 ~ 22mm is located at refractory brick (1) width for the center of vent hole (4)
On the perpendicular bisector on side.
As shown in Figure 4 and Figure 5, every number of rows amount of the inclined-plane air hole (3) is 7, and inclined-plane air hole (3) is perpendicular to institute
Strip inclined-plane is stated, the center line of inclined-plane air hole (3) intersects with the center line for vent hole (4).
As shown in Figure 4 and Figure 5, the quantity of the vertical air hole (2) and every number of rows amount of inclined-plane air hole (3) are 6,
The center line of vertical air hole (2) intersects with the center line for vent hole (4).
The size of the refractory brick (1) are as follows: lengthL=55~65mm；WidthB=75~85mm；HighlyH=95~105mm。
As shown in Fig. 2, height of the strip inclined-plane far from lower planeh 2 =75~85mm；The strip inclined-plane and upper plane
Angle α=15 ~ 20 °.
As shown in figure 4, the diameter for vent hole (4)D=14~18mm。
As shown in figure 4, the diameter of the vertical air hole (2)d 1 =1.4~1.6mm；The pitch-row of vertical air hole (2)l 1 =
(14 ~ 16)d 1 ；The diameter of the inclined-plane air hole (3)d 2 =1.4 ~ 1.6mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Embodiment 5
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.In addition to following technical parameters, remaining is the same as real
Apply example 4:
For vent hole (4) center line away from the height of refractory brick (1) lower planeh=15~20mm。
Every number of rows amount of the inclined-plane air hole (3) is 2 ~ 6；The every row inclined-plane of quantity ratio of vertical air hole (2) is ventilative
The quantity in hole (3) is 1 few.
The size of the refractory brick (1) are as follows: lengthL=15~60mm；WidthB=65~80mm；HighlyH=85~100mm。
Height of the strip inclined-plane far from lower planeh 2 =60~75mm；Angle α=20 of the strip inclined-plane and upper plane ~
25°。
The diameter for vent hole (4)D=10~15mm。
The diameter of the vertical air hole (2)d 1 =1.0~1.4mm；The pitch-row of vertical air hole (2)l 1 =(10 ~ 14)d 1 ；Institute
State the diameter of inclined-plane air hole (3)d 2 =1.0 ~ 1.4mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Embodiment 6
A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining.In addition to following technical parameters, remaining is the same as real
Apply example 4:
For vent hole (4) center line away from the height of refractory brick (1) lower planeh=22~30mm。
Every number of rows amount of the inclined-plane air hole (3) is 8 ~ 10；The every row inclined-plane of quantity ratio of vertical air hole (2) is ventilative
The quantity in hole (3) is 1 few.
The size of the refractory brick (1) are as follows: lengthL=65~100mm；WidthB=85~95mm；HighlyH=105~115mm。
Height of the strip inclined-plane far from lower planeh 2 =82~90mm；Angle α=10 of the strip inclined-plane and upper plane ~
15°。
The diameter for vent hole (4)D=17~20mm。
The diameter of the vertical air hole (2)d 1 =1.6~2.0mm；The pitch-row of vertical air hole (2)l 1 =(16 ~ 20)d 1 ；Institute
State the diameter of inclined-plane air hole (3)d 2 =1.6 ~ 2.0mm, the pitch-row of inclined-plane air hole (3)l 2 =l 1 。
Present embodiment has following good effect compared with prior art:
(1) present embodiment obtains 6 to 30 using two rows of inclined-plane air holes (3) air hole (2) vertical with a row
A independent gas passage can increase the surface area to interact between bubble and phase interface, can be entire when being blown argon gas
Form " gas blanket " on molten steel face, this is removal non-metallic inclusion (including the Miniature nonmetallic field trash less than 10 μm)
Most effective injection method.
(2) present embodiment uses diameterd 1 The vertical air hole (2) and diameter of=1.0 ~ 2.0mmd 2 =1.0~2.0mm
Inclined-plane air hole (3), and it is wide can be blown out range in different directions distribution for vertical air hole (2) and inclined-plane air hole (3)
And finely dispersed fine Argon Bubble, these Argon Bubbles are conducive to remove non-metallic inclusion, to reduce the non-gold in molten steel
The content for belonging to field trash and gas obtains the molten steel of high-cleanness, high, improves hot rolling and forges the mechanical property of steel, improves gold
The qualification rate of metal products ultrasonic inspection improves the corrosion resistance of corrosion-resisting steel.
(3) main body of present embodiment is the refractory brick (1) for being mounted on tundish bottom, what refractory brick (1) used
Air hole is round hole, and structure is simple, and easy to process, the easy to maintenance and service life is long.
Therefore, present embodiment has the characteristics that structure is simple, convenient for safeguarding, the service life is long and using effect is good.
Claims (4)
1. a kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining, it is characterised in that: the ontology of the air brick
For the refractory brick (1) of cuboid, two long sides of plane are symmetrically equipped with strip inclined-plane along refractory brick (1), and two strips are oblique
Face is symmetrically provided with a row inclined-plane air hole (3), and the upper plane of refractory brick (1) is provided with the vertical air hole of a row (2), and a row is vertical
Air hole (2) is located at the middle position of two rows of inclined-plane air holes (3)；It is provided in the lower part of refractory brick (1) for vent hole (4),
It is described to be communicated for vent hole (4) with each air hole in vertical air hole (2) and inclined-plane air hole (3)；It is each vertical ventilative
Hole (2) center line and the center line of adjacent bevel surfaces air hole (3) are located in same vertical guide, or each vertical air hole (2)
Heart line and the perpendicular bisector of two adjacent inclined-plane air holes (3) are located at same vertical guide；
The centerline parallel for vent hole (4) in the long side of refractory brick (1), for vent hole (4) center line away from refractory brick
(1) height h=15~30mm of lower plane is located on the perpendicular bisector of refractory brick (1) broadside for the center of vent hole (4)；
Every number of rows amount of the inclined-plane air hole (3) is 2~10, and inclined-plane air hole (3) is perpendicular to the strip inclined-plane, inclined-plane
The center line of air hole (3) intersects with the center line for vent hole (4)；
The quantity of the vertical air hole (2) and every number of rows amount of inclined-plane air hole (3) are identical or one few, vertical air hole
(2) center line intersects with the center line for vent hole (4)；
The height h of the strip inclined-plane far from lower plane2=60~90mm；Angle α=10 of the strip inclined-plane and upper plane~
25°。
2. the air brick of the bottom blowing fine Argon Bubble according to claim 1 for tundish refining, it is characterised in that institute
State the size of refractory brick (1) are as follows: length L=15~100mm；Width B=65~95mm；Height H=85~115mm.
3. the air brick of the bottom blowing fine Argon Bubble according to claim 1 for tundish refining, it is characterised in that institute
State diameter D=10~20mm for vent hole (4).
4. the air brick of the bottom blowing fine Argon Bubble according to claim 1 for tundish refining, it is characterised in that institute
State the diameter d of vertical air hole (2)1=1.0~2.0mm；The pitch-row l of vertical air hole (2)1=(10~20) d1；The inclined-plane
The diameter d of air hole (3)2=1.0~2.0mm, the pitch-row l of inclined-plane air hole (3)2=l1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400753.0A CN105855529B (en) | 2016-06-08 | 2016-06-08 | A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610400753.0A CN105855529B (en) | 2016-06-08 | 2016-06-08 | A kind of air brick of the fine Argon Bubble of bottom blowing for tundish refining |
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| Publication Number | Publication Date |
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| CN105855529A CN105855529A (en) | 2016-08-17 |
| CN105855529B true CN105855529B (en) | 2019-01-04 |
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Families Citing this family (1)
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| CN116604009B (en) * | 2023-07-17 | 2023-10-20 | 联峰钢铁（张家港）有限公司 | Device and method for rapidly opening flow after flow blocking of tundish |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01191735A (en) * | 1988-01-28 | 1989-08-01 | Nippon Steel Corp | Converter having bottom blowing nozzle to prevent oscillation |
| FR2642679B3 (en) * | 1988-12-22 | 1990-11-30 | Unimetall Sa | DEVICE FOR ELIMINATING NON-METALLIC INCLUSIONS IN A CONTINUOUS CASTING DISTRIBUTOR OF STEEL |
| CN201186338Y (en) * | 2008-03-14 | 2009-01-28 | 濮阳濮耐高温材料（集团）股份有限公司 | Gas curtain equipped with sloped gas blowing path |
| CN204159854U (en) * | 2014-10-13 | 2015-02-18 | 长兴正发热电耐火材料有限公司 | Tundish bottom blowing structure |
| CN204174227U (en) * | 2014-10-13 | 2015-02-25 | 长兴正发热电耐火材料有限公司 | Gas permeable brick |
| CN205684702U (en) * | 2016-06-08 | 2016-11-16 | 武汉科技大学 | A kind of bottom-blown air brick for tundish refine |
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Application publication date: 20160817 Assignee: Heimer robot (Huangshi) Co.,Ltd. Assignor: WUHAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021420000034 Denomination of invention: A breathable brick with bottom blowing fine argon bubbles for tundish refining Granted publication date: 20190104 License type: Common License Record date: 20211129 |
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Application publication date: 20160817 Assignee: Wuhan Hanwei Lida Technology Co.,Ltd. Assignor: WUHAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2022420000074 Denomination of invention: A breathable brick for bottom blowing fine argon bubbles for tundish refining Granted publication date: 20190104 License type: Common License Record date: 20220818 |
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