CN210045989U - Immersion type water gap with argon blowing on inner wall - Google Patents
Immersion type water gap with argon blowing on inner wall Download PDFInfo
- Publication number
- CN210045989U CN210045989U CN201920416985.4U CN201920416985U CN210045989U CN 210045989 U CN210045989 U CN 210045989U CN 201920416985 U CN201920416985 U CN 201920416985U CN 210045989 U CN210045989 U CN 210045989U
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- CN
- China
- Prior art keywords
- nozzle
- wall
- argon blowing
- nozzle body
- argon
- Prior art date
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 57
- 238000007664 blowing Methods 0.000 title claims abstract description 50
- 238000007654 immersion Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 6
- 238000009749 continuous casting Methods 0.000 abstract description 7
- 238000005189 flocculation Methods 0.000 abstract description 7
- 230000016615 flocculation Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 4
- 239000008187 granular material Substances 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 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
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
Abstract
The utility model relates to an inner wall argon blowing immersion nozzle belongs to metallurgical industry steel continuous casting production technical field. The technical scheme is as follows: the material of the nozzle body (1) is aluminum carbon material, and the material of the nozzle inner wall (2) is ZrO
2And (2) an argon blowing channel (5) is arranged between the nozzle body (1) and the nozzle inner wall (2), the upper end of the nozzle body (1) is a nozzle inlet, the lower end of the nozzle body (1) is a nozzle outlet, an air inlet hole (6) is formed in the nozzle body (1), a plurality of argon blowing holes (4) are uniformly formed in the nozzle inner wall (2), and the nozzle outlet is two or four steel outlet holes (8) which are symmetrically arranged on the side surface of the nozzle body (1). The utility model has the advantages that: can effectively prevent the generation of impuritiesAttached to the mouth of a river inner wall, reduce the erosion of slag line position refractory material simultaneously, avoid the emergence of molten steel flocculation flow condition, do benefit to the large granule inclusion come-up simultaneously and get rid of, purify the molten steel and promote the cleanliness factor.
Description
Technical Field
The utility model relates to an inner wall argon blowing immersion nozzle belongs to metallurgical industry steel continuous casting production technical field.
Background
The problem that the nozzle is blocked in the continuous casting process is often caused when aluminum killed steel is cast. Alumina inclusions in molten steel adhere to, gather and grow on the inner wall of the nozzle, and when the alumina inclusions develop to a certain degree, the nozzle flocculation flow and even blockage can be caused, so that the control and normal production of inclusions in the molten steel are influenced to a certain extent.
In order to improve the casting performance of the molten steel, calcium wires and the like are added in the production process to carry out reforming treatment on the molten steel so as to convert alumina inclusions in the steel into calcium aluminate (7 Al)
2O
312CaO, etc.) to reduce the wetting angle between inclusions and molten steel, thereby reducing the interfacial tension driving the inclusions to move toward the inner wall of the nozzle, but calcium aluminate inclusions have a large size and are disadvantageous to the fatigue properties, impact toughness, etc. of steel products, and the calcium treatment of molten steel is prohibited by the steel grade standards for bearing steel, etc.
The optimization of the structure of the water gap is also an important way for improving the pouring performance of the molten steel. Patent number CN 202087823U proposes a middle package immersion argon blowing mouth of a river in continuous casting, is blowing the middle part internal perisporium of argon mouth of a river bowl portion structure department and is going up the level and is setting up an annular groove, is blowing argon mouth of a river bowl portion structural connection one and blowing the argon pipe, makes mouth of a river bowl portion form one deck argon gas protection film to purify the molten steel. The water gap can effectively reduce the problem of air suction, has the effect of purifying molten steel, and is difficult to solve the problem of flocculation flow at the water gap.
Patent number CN 1796028 provides a prevent stifled immersion nozzle, increases the stifled inside lining that prevents that the one deck does not contain carbon on traditional aluminium carbon mouth of a river basis, has prevented the reaction between mouth of a river refractory material and molten steel, has reduced mouth of a river inside lining and the reaction degree that contains the CaO inclusion, has alleviated mouth of a river blocking phenomenon to a certain extent, nevertheless to special steel grades such as bearing steel, it is general to prevent stifled effect.
Patent number CN 204381361U provides a novel immersion nozzle who blows argon structure, can play certain purification molten steel and prevent stifled effect, nevertheless because this patent realizes blowing argon on whole inner wall, be difficult to guarantee to stably generate even dispersed argon bubble at the mouth of a river inner wall when reducing the blowing argon volume, cause defects such as continuous casting billet surface foaming easily when improving the blowing argon volume, and it does not have special design to go out the steel hole, can't realize effectively getting rid of the especially large granule inclusion of molten steel inclusion, be difficult to obtain the molten steel of high cleanliness.
Patent No. CN 107127332A proposes a submerged nozzle for preventing flocculation and its manufacturing and using method, using Y
2O
3High temperature resistance and reduced ZrO when combined with MgO
2The method can prevent flocculation flow to a certain extent, but is difficult to solve the problem of molten steel flocculation flow fundamentally by the optimization of materials.
Patent No. CN 102481632B proposes an immersion nozzle for purifying molten steel, which can suppress entrainment of mold powder near an outlet by homogenizing and rectifying a molten steel flow flowing out of a discharge hole of the immersion nozzle, thereby achieving the purpose of reducing entrainment of refractory and purifying the molten steel, but this method cannot solve the problem of nozzle floc flow.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an argon immersion nozzle is blown to inner wall can prevent effectively that the molten steel wadding from flowing the emergence of the condition, does benefit to large granule inclusion come-up simultaneously and gets rid of, reaches the purpose that purifies the molten steel and promote the cleanliness factor, solves the problem that exists among the background art.
The technical scheme of the utility model is that:
the inner wall argon blowing submerged nozzle comprises a nozzle body, a nozzle inner wall, argon blowing holes, argon blowing channels, air inlet holes, a nozzle central line and steel outlet holes, wherein the nozzle body is made of aluminum-carbon materials, and the nozzle inner wall is made of ZrO
2And CaO-C, an argon blowing channel is arranged between the nozzle body and the inner wall of the nozzle, the upper end of the nozzle body is a nozzle inlet, the lower end of the nozzle body is a nozzle outlet, the nozzle body is provided with an air inlet communicated with the argon blowing channel, the inner wall of the nozzle is uniformly provided with a plurality of argon blowing holes communicated with the argon blowing channel, an included angle α between the central line of the argon blowing holes and the central line of the nozzle is 15-30 degrees, the nozzle outlet is two or four steel outlet holes which are symmetrically arranged on the side surface of the nozzle body, and an included angle β between the central line of the steel outlet holes and the central line of the nozzle is 72-75 degrees.
The argon blowing hole is arranged on the inner wall of the water gap at one third section of the upper part or one third section of the lower part of the water gap body.
And the air inlet on the water gap body is connected with an argon pipeline.
The utility model has the advantages that:
(1) the material of the nozzle body is aluminum carbon material, and the material of the inner wall of the nozzle is ZrO
2CaO-C, which can effectively prevent the chemical reaction between the nozzle refractory and the molten steel to generate inclusions attached to the inner wall of the nozzle to block the nozzle and reduce the erosion of the refractory at the slag line part;
(2) the argon blowing holes are formed in the inner wall of the water gap at one third of the upper part of the water gap body or one third of the lower part of the water gap body, two or four steel outlet holes are formed in the water gap outlet, the two or four steel outlet holes are symmetrically arranged on the side face of the water gap body, the flocculation condition of molten steel can be effectively prevented, large-particle impurities can be favorably floated and removed, and the purpose of purifying the molten steel and improving the cleanliness is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the drawing, a nozzle body 1, a nozzle inner wall 2, a nozzle slag line 3, an argon blowing hole 4, an argon blowing channel 5, an air inlet hole 6, a nozzle central line 7, a steel outlet hole 8, an included angle α between the argon blowing hole and the nozzle central line, and an included angle β between a tapping hole central line and the nozzle central line are shown.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
Referring to the attached drawing 1, the inner wall argon blowing submerged nozzle comprises a nozzle body 1, a nozzle inner wall 2, argon blowing holes 4, an argon blowing channel 5, air inlet holes 6, a nozzle central line 7 and a steel outlet hole 8, wherein the nozzle body 1 is made of aluminum carbon material, and the nozzle inner wall 2 is made of ZrO
2The nozzle comprises a nozzle body 1, a nozzle inner wall 2, a nozzle inlet, a nozzle outlet, an argon blowing channel 5, an air inlet 6 and two or four steel outlet holes 8, wherein the argon blowing channel 5 is arranged between the nozzle body 1 and the nozzle inner wall 2, the upper end of the nozzle body 1 is a nozzle inlet, the lower end of the nozzle body 1 is a nozzle outlet, the nozzle body 1 is provided with an air inlet 6 communicated with the argon blowing channel 5, the nozzle inner wall 2 is uniformly provided with a plurality of argon blowing holes 4 communicated with the argon blowing channel 5, an included angle α between the central line of the argon blowing holes 4 and the nozzle central line 7 is 15-30 degrees, the nozzle outlet is two or four steel outlet holes 8 which are symmetrically arranged on the side surface of the nozzle body 1, and the included angle β.
The specific embodiment is as follows:
in this embodiment, referring to fig. 1, the nozzle body 1 is made of aluminum carbon material, and the slag line portion 3 and the nozzle inner wall 2 are made of ZrO
2The nozzle is made of CaO-C, the thickness of the inner wall 2 of the nozzle is 5mm, an argon blowing channel 5 is arranged between the nozzle body 1 and the inner wall 2 of the nozzle, the width of the argon blowing channel is 3mm, the nozzle body 1 is provided with an air inlet 6 communicated with the argon blowing channel 5, and the air inlet 6 is used for connecting an argon pipeline;
a plurality of argon blowing holes 4 which are uniformly distributed are arranged on the inner wall 2 of the water gap at one third of the upper part or one third of the lower part of the water gap body 1, and the included angle α between the central line of the argon blowing holes 4 and the central line 7 of the water gap is 15-30 degrees;
the upper end of mouth of a river body 1 is mouth of a river entry, and the lower extreme of mouth of a river body 1 is mouth of a river export, and mouth of a river export includes two or four play steel holes 8, and two or four play steel holes 8 set up respectively in the side of mouth of a river body 1 and symmetrical arrangement, and the contained angle β between the central line of play steel hole 8 and the mouth of a river central line is 72 to 75.
The number of the continuous casting furnaces for the bearing steel produced by the utility model is greatly increased from 6 to 8 furnaces to 15 to 18 furnaces, wherein the number of the continuous casting furnaces for 10 casting times is 16 furnaces, the total oxygen content in the steel is reduced from 5.0 to 6.7ppm to 4.6 to 6.5ppm, and the average total oxygen content is reduced by 0.3 ppm.
Claims (3)
1. The utility model provides an inner wall blows argon immersion nozzle which characterized in that: comprises a nozzle body (1), a nozzle inner wall (2), an argon blowing hole (4), an argon blowing channel (5), an air inlet hole (6), a nozzle central line (7) and a steel outlet hole (8), wherein the nozzle body (1) is made of aluminum carbon material, and the nozzle inner wall (2) is made of ZrO
2The nozzle comprises a nozzle body (1), a nozzle inner wall (2), a nozzle inlet, a nozzle outlet, an argon blowing channel (5) and a nozzle outlet, wherein the upper end of the nozzle body (1) is a nozzle inlet, the lower end of the nozzle body (1) is a nozzle outlet, the nozzle body (1) is provided with an air inlet hole (6) communicated with the argon blowing channel (5), the nozzle inner wall (2) is uniformly provided with a plurality of argon blowing holes (4) communicated with the argon blowing channel (5), an included angle α between the central line of the argon blowing holes (4) and the nozzle central line (7) is 15-30 degrees, the nozzle outlet is two or four steel outlet holes (8) which are symmetrically arranged on the side surface of the nozzle body (1), and an included angle β between the central line of the steel outlet holes (8) and the nozzle central line is 72-75 degrees.
2. The inner wall argon blowing submerged entry nozzle of claim 1, wherein: the argon blowing hole (4) is arranged on the inner wall (2) of the water gap at one third section of the upper part or one third section of the lower part of the water gap body (1).
3. The inner wall argon blowing submerged entry nozzle of claim 1 or 2, wherein: and an air inlet (6) on the water gap body (1) is connected with an argon pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416985.4U CN210045989U (en) | 2019-03-29 | 2019-03-29 | Immersion type water gap with argon blowing on inner wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416985.4U CN210045989U (en) | 2019-03-29 | 2019-03-29 | Immersion type water gap with argon blowing on inner wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210045989U true CN210045989U (en) | 2020-02-11 |
Family
ID=69379893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920416985.4U Active CN210045989U (en) | 2019-03-29 | 2019-03-29 | Immersion type water gap with argon blowing on inner wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210045989U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404380A (en) * | 2020-10-29 | 2021-02-26 | 宝钢特钢韶关有限公司 | Method for reducing inclusions in bearing steel and continuous casting argon blowing control method |
| CN114309571A (en) * | 2021-12-01 | 2022-04-12 | 上海大学 | Method and device for inhibiting water gap blockage in rare earth steel continuous casting process |
-
2019
- 2019-03-29 CN CN201920416985.4U patent/CN210045989U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404380A (en) * | 2020-10-29 | 2021-02-26 | 宝钢特钢韶关有限公司 | Method for reducing inclusions in bearing steel and continuous casting argon blowing control method |
| CN112404380B (en) * | 2020-10-29 | 2021-12-10 | 宝钢特钢韶关有限公司 | Method for reducing inclusions in bearing steel and continuous casting argon blowing control method |
| CN114309571A (en) * | 2021-12-01 | 2022-04-12 | 上海大学 | Method and device for inhibiting water gap blockage in rare earth steel continuous casting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240826 Address after: Room 803, 8th Floor, Juteng Business Center, Weixian High tech Industrial Development Zone, Xingtai City, Hebei Province, 054799 Patentee after: Hebei Xinggang Technology Co.,Ltd. Country or region after: China Address before: 054027 No. 262 South Steel Road, Shiqiao West, Hebei, Xingtai Patentee before: XINGTAI IRON & STEEL Co.,Ltd. Country or region before: China |