CN104057078A - Long nozzle and continuous casting method - Google Patents
Long nozzle and continuous casting method Download PDFInfo
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- CN104057078A CN104057078A CN201310589323.4A CN201310589323A CN104057078A CN 104057078 A CN104057078 A CN 104057078A CN 201310589323 A CN201310589323 A CN 201310589323A CN 104057078 A CN104057078 A CN 104057078A
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- long nozzle
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- river
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Abstract
The invention discloses a long nozzle and a continuous casting method. The long nozzle comprises a durable material (1) and a steel sleeve (2) arranged outside the durable material in a sleeving way, wherein a hollow part (3) is arranged in the durable material; the durable material is sequentially provided with a gas inlet (4), an annular gas chamber (5) and a vent groove (6), which are communicated with one another, in the thickness direction; the vent groove extends in the thickness direction of the durable material to be communicated with the hollow part; a plurality of gas gaps are formed between the upper surface of the durable material and the steel sleeve, and are communicated with the top of the hollow part and the gas inlet respectively. According to the long nozzle, a double-sealing mode is adopted, a lower nozzle of a large ladle is primarily sealed through the gas inlet, the annular gas chamber and the vent groove by gas, and meanwhile, the combination part of the long nozzle and the lower nozzle of the large ladle can be secondarily sealed through the gas gaps formed by a plurality of bumps which are distributed on the upper surface of the durable material at intervals by the gas, so that double sealing effects are achieved, the sealing performance is high, the nitrogen increase of molten steel from the large ladle to a medium ladle can be effectively reduced, and the nitrogen increase of the molten steel in a continuous casting process can be controlled within 3ppm.
Description
Technical field
The invention belongs to metallurgical technology field, particularly, relate to a kind of long nozzle and continuous cast method.
Background technology
For most of steel grades, nitrogen is harmful element, and the nitrogen content in steel is larger on the mechanical performance impact of steel, and while especially producing for the mild steel under deep-draw condition, ultra-low-carbon steel, the adverse effect of nitrogen is obvious especially.Therefore,, in the time producing high-level, high added value low nitrogen steel, in molten steel, nitrogen content is more low better.In modern steel-smelting production process flow process, often finally realize the production of low nitrogen steel by making steel the control of each operation nitrogen content.
The continuous casting process of molten steel is the process of nitrogen pick-up; especially molten steel from large bag to the mobile process of bag; conventionally adopt long nozzle to protect cast; the lower mouth of a river of the upper end of long nozzle and ladle slide gate in billet joins; in its lower end Cha Renzhong Baogang water, if long nozzle sealing effectiveness is bad, can cause molten steel nitrogen pick-up serious.At present, conventionally long water gap bowl part make argon-blowing device seal control molten steel from large bag to the nitrogen pick-up of bag.But traditional long nozzle is single sealing, and the unreasonable long nozzle that causes of long nozzle Argon parameter control is not good with the lower mouth of a river of large bag sealing effectiveness, molten steel nitrogen pick-up severity.
Therefore in the urgent need to a kind of can molten steel from large bag to the mobile process of bag, effectively control the device and method of nitrogen pick-up content.
Summary of the invention
The object of this invention is to provide a kind of long nozzle, this long nozzle has stronger sealing property, the nitrogen pick-up of casting process molten steel is controlled in 3ppm, thereby improves steel quality.
To achieve these goals, the invention provides a kind of long nozzle, comprise resistance to material and be set in the steel bushing outside described resistance to material, described resistance to material inside has hollow bulb, described resistance to material is provided with the air inlet, ring-shaped air chamber and the air channel that are interconnected successively along its thickness direction, described air channel extends to described hollow bulb and is communicated with along the thickness direction of described resistance to material; Between the upper surface of described resistance to material and described steel bushing, be provided with multiple air clefts, multiple described air clefts are communicated with top and the air inlet of described hollow bulb respectively.
Preferably, the upper surface of described resistance to material is annular, and the described upper surface of resistance to material is provided with circumferentially multiple projections spaced apart of multiple upper surfaces along described resistance to material, between adjacent two projections, forms along the radially-arranged described air cleft of the described upper surface of resistance to material.
Preferably, described hollow bulb has the first inclined-plane and the second inclined-plane that is positioned at described the first below, inclined-plane and is connected with the first inclined-plane, the gradient on the first inclined-plane is greater than the gradient on the second inclined-plane, and the gradient on described the second inclined-plane is identical with the gradient at the mouth of a river under described large bag.
Preferably, described air channel is multiple, multiple described air channels being circumferentially evenly arranged along described ring-shaped air chamber.
Preferably, the height of described projection is 1mm-3mm.
Preferably, described air inlet is communicated with source of the gas by pipeline.
Preferably, described source of the gas is argon gas source of the gas.
Preferably, described pipeline is provided with flowmeter and valve.
The present invention also provides a kind of continuous cast method, and the method is used and pours into a mould according to long nozzle of the present invention.
Preferably, the method comprises the steps:
S1. after finishing, middle bag baking utilize argon gas centering bag to clean;
S2. before cast, add seal washer in the upper end of described long nozzle, and be enclosed within large bag on the mouth of a river, the upper end of long nozzle and the lower mouth of a river of large bag are closely assembled;
S3. by the lower end of described long nozzle with in wrap into mouth of a river assembling;
S4. open long nozzle Argon valve, and to regulate long nozzle argon blowing rate be 40m
3/ h～60m
3/ h.
S5. open mouth of a river slide plate under large bag, make molten steel bag from large bag flows to.
Long nozzle provided by the invention is double containment, gas carries out first sealing by air inlet, ring-shaped air chamber and air channel to the mouth of a river under large bag, gas also can be by carrying out second sealing by the upper surface of resistance to material multiple air clefts that convex to form spaced apart to long nozzle and the lower mouth of a river of large bag binding site simultaneously, realize the effect of dual-seal, sealing property is better, can effectively reduce molten steel from large bag to the nitrogen increased amount of bag, the nitrogen pick-up of casting process molten steel can be controlled in 3ppm, thereby raising steel quality, and provide technical support for the production of low nitrogen steel.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the front view of the long nozzle of embodiment of the present invention;
Fig. 2 is the cutaway view intercepting along A-A line in Fig. 1.
Description of reference numerals
1, resistance to material; 2, steel bushing; 3, hollow bulb; 4, air inlet; 5, ring-shaped air chamber; 6, air channel; 7, projection; 31, the first inclined-plane; 32 second inclined-planes.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, detailed description of the invention described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings as " upper and lower, left and right "; " inside and outside " refers to inside and outside with respect to the profile of each parts itself.In addition, term " gradient " refers to the acute angle becoming with horizontal direction with reference to inclined-plane in accompanying drawing (comprising the first inclined-plane and the second inclined-plane).
According to an aspect of the present invention, a kind of long nozzle is provided, as depicted in figs. 1 and 2, this long nozzle comprises resistance to material 1 and is set in the steel bushing 2 outside described resistance to material 1, described resistance to material 1 inside has hollow bulb 3, described resistance to material 1 is provided with the air inlet 4, ring-shaped air chamber 5 and the air channel 6 that are interconnected successively along its thickness direction, described air channel 6 extends to described hollow bulb 3 and is communicated with along the thickness direction of described resistance to material 1; Between the upper surface of described resistance to material 1 and described steel bushing 2, be provided with multiple air clefts, multiple described air clefts are communicated with top and the air inlet 4 of described hollow bulb 3 respectively.Wherein, between the sidewall of resistance to material 1 and described steel bushing 2, have minim gap, this minim gap forms an annular gas passage; The a part of gas entering by air inlet 4 enters hollow bulb 3 by ring-shaped air chamber 5 and air channel 6, as shown by the arrows in Figure 1, another part gas can enter by the passage being shaped by this minim gap the upper surface of resistance to material 1, and enters in hollow bulb 3 by air cleft.
Long nozzle provided by the invention is double containment, gas is by air inlet 4, ring-shaped air chamber 5 and air channel 6 carry out first sealing to the mouth of a river under large bag, gas also can be by carrying out second sealing by resistance to material 1 upper surface multiple protruding 7 air clefts that form spaced apart to long nozzle and the lower mouth of a river of large bag binding site simultaneously, realize the effect of dual-seal, sealing property is better, can effectively reduce molten steel from large bag to the nitrogen increased amount of bag, the nitrogen pick-up of casting process molten steel can be controlled in 3ppm, thereby raising steel quality, and provide technical support for the production of low nitrogen steel.
Wherein, the material of long nozzle can adopt vitreous silica matter or aluminium carbonaceous, and vitreous silica long nozzle adopts the moulding of slurry casting method, is characterized in that thermal-shock resistance is good, has higher mechanical strength and acid resistance scouring, and chemical stability is good.Aluminum-carbon long runner has good thermal shock resistance, to the strong adaptability of steel grade.Oxidized in baking and use for preventing the carbon on long nozzle surface, scribble inoxidzable coating on long nozzle surface.
Preferably, the upper surface of described resistance to material 1 is annular, and described resistance to material 1 upper surface to be provided with multiple upper surfaces along described resistance to material 1 circumferentially spaced apart multiple protruding 7, between adjacent two projections 7, form along the radially-arranged described air cleft of described resistance to material 1 upper surface.Preferably air cleft is evenly arranged, and under large bag, mouth of a river place is uniformly distributed ringwise like this, and the sealing effectiveness at the lower mouth of a river of large bag place is even.
Further, hollow bulb 3 has the first inclined-plane 31 and the second inclined-plane 32 that is positioned at 31 belows, described the first inclined-plane and is connected with the first inclined-plane 31, preferably the first inclined-plane 31 and the second inclined-plane 32 are conical inclined surface, certainly, the shape on the first inclined-plane 31 and the second inclined-plane 32 also can be arranged to other be suitable for large bag under the shape of mouth of a river sealing combination, wherein the gradient on the first inclined-plane 31 is greater than the gradient on the second inclined-plane 32, in other words, ratio the second inclined-plane 32 that is exactly the first inclined-plane 31 is steeper, wherein, air channel 6 extends on the first inclined-plane 31.Preferably, the gradient on the second inclined-plane is identical with the gradient at the mouth of a river under described large bag, this second inclined-plane 32 makes long water gap bowl part be contacted and be changed into taper seat contact by original line with the lower mouth of a river of large bag contact position, can realize the mouth of a river under large bag and be combined more closely with long nozzle, to strengthen the sealing property between long nozzle and the lower mouth of a river of large bag.
Wherein, described air channel 6 is multiple, multiple described air channels 6 being circumferentially evenly arranged along described ring-shaped air chamber 5.Multiple air channels 6 distribute radially, all lead to the hollow bulb 3 of long nozzle, to seal long nozzle and the lower mouth of a river of large bag binding site.
Preferably, described protruding 7 height is 1mm-3mm, is preferably 2mm, and air cleft height is also 2mm, neither fast nor slow to ensure the flow velocity of gas, realizes best sealing effectiveness.
Wherein, described air inlet 4 is communicated with source of the gas by pipeline, and source of the gas can be helium, argon gas, neon etc., and preferably, described source of the gas is argon gas source of the gas.
Preferably, described pipeline is provided with flowmeter and valve, and flowmeter is for detection of the flow of gas to control the flow velocity of gas, and described valve is for being communicated with or disconnecting source of the gas.
While building, argon gas enters through ring-shaped air chamber 5 from air inlet 4, and ring-shaped air chamber 5 is communicated with 8 air channels 6, and while passing into argon gas, 8 air channels 6 blow out argon gas and enter the hollow bulb 3 of long nozzle, plays the effect of long nozzle middle part and the lower mouth of a river sealing of large bag; Simultaneously, the argon gas being blown into by air inlet 4 also can enter long nozzle upper surface by the gap between resistance to material 1 steel bushing 2, owing to there being 20 high 2mm spaced protruding 7 between resistance to material 1 upper surface and steel bushing 2, between projection 7, form air cleft, when air blowing, 20 air clefts of the rim of a bowl are blown into argon gas and enter the hollow bulb 3 of long nozzle, and long nozzle top is sealed.
Use the method for this long nozzle protection cast to be; middle bag baking finishes rear employing argon gas centering bag and cleans; air in bag in eliminating; molten steel from large bag to bag decline before long nozzle with wrap greatly under add seal washer the mouth of a river; and control long nozzle argon blowing rate at 40～60m3/h; its objective is that air amount causes absorption of nitrogen by steel in order to prevent that in the liquid inflow of large Baogang, packet procedures forms negative pressure.If the too small meeting of long nozzle argon blowing rate causes molten steel, packet procedures from great Bao drops to forms negative pressure, and air amount makes molten steel nitrogen pick-up; If argon blowing rate is excessive, can cause temperature drop excessive, and the long water gap bowl part molten steel that very easily bonds cause the lower mouth of a river of large bag to be combined tight and air amount nitrogen pick-up with long nozzle.
According to another aspect of the present invention, also provide a kind of continuous cast method, the method is used and pours into a mould according to long nozzle of the present invention.
Preferably, the method comprises the steps:
S1. after finishing, middle bag baking utilize argon gas centering bag to clean;
S2. before cast, add seal washer in the upper end of described long nozzle, and be enclosed within large bag on the mouth of a river, the upper end of described long nozzle and the lower mouth of a river of large bag are closely assembled;
S3. by the lower end of described long nozzle with in wrap into mouth of a river assembling;
S4. open long nozzle Argon valve, and to regulate long nozzle argon blowing rate be 40m
3/ h-60m
3/ h.
S5. open mouth of a river slide plate under large bag, make molten steel bag from large bag flows to.
The present invention is by adopting long nozzle protection of the present invention to build, and by rationally controlling long nozzle Argon parameter, argon blowing rate is 40m
3/ h-60m
3/ h, can ensure that long nozzle and the lower mouth of a river of large bag have best sealing effectiveness, can by molten steel in casting process from large bag to stable being controlled in 3ppm of nitrogen increased amount of bag decline process, ensure steel quality.
Embodiment 1:
Adopt long nozzle of the present invention to carry out the method for continuous casting, after finishing, middle bag baking utilize argon gas centering bag to clean, and molten steel from large bag to bag decline before long nozzle with wrap greatly under add seal washer the mouth of a river, open long nozzle Argon valve, and to regulate long nozzle argon blowing rate be 40m
3/ h, now opens mouth of a river slide plate under large bag, makes molten steel bag from large bag flows to.Large bag is got steel sample chemical examination in large bag before hanging on panoramic table, and molten steel nitrogen content is 36ppm, and until going steel sample to chemically examine in middle bag after bag during molten steel flows into, molten steel nitrogen content is 39ppm, and wrapping is greatly 3ppm to the liquid nitrogen pick-up of middle Baogang.
Embodiment 2:
Adopt long nozzle of the present invention to carry out the method for continuous casting, after finishing, middle bag baking utilize argon gas centering bag to clean, and molten steel from large bag to bag decline before long nozzle with wrap greatly under add seal washer the mouth of a river, open long nozzle Argon valve, and to regulate long nozzle argon blowing rate be 50m
3/ h, now opens mouth of a river slide plate under large bag, makes molten steel bag from large bag flows to.Large bag is got steel sample chemical examination in large bag before hanging on panoramic table, and molten steel nitrogen content is 25ppm, and until going steel sample to chemically examine in middle bag after bag during molten steel flows into, molten steel nitrogen content is 27ppm, and wrapping is greatly 2ppm to the liquid nitrogen pick-up of middle Baogang.
Embodiment 3:
Adopt long nozzle of the present invention to carry out the method for continuous casting, after finishing, middle bag baking utilize argon gas centering bag to clean, and molten steel from large bag to bag decline before long nozzle with wrap greatly under add seal washer the mouth of a river, open the Argon valve on long nozzle pipeline, and to regulate long nozzle argon blowing rate be 60m
3/ h, now opens mouth of a river slide plate under large bag, makes molten steel bag from large bag flows to.Large bag is got steel sample chemical examination in large bag before hanging on panoramic table, and molten steel nitrogen content is 29ppm, and until going steel sample to chemically examine in middle bag after bag during molten steel flows into, molten steel nitrogen content is 30ppm, and wrapping is greatly 1ppm to the liquid nitrogen pick-up of middle Baogang.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned detailed description of the invention, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a long nozzle, it is characterized in that, comprise resistance to material (1) and be set in the outer steel bushing (2) of described resistance to material (1), described resistance to material (1) inside has hollow bulb (3), described resistance to material (1) is provided with the air inlet (4), ring-shaped air chamber (5) and the air channel (6) that are interconnected successively along its thickness direction, described air channel (6) extends to described hollow bulb (3) and is communicated with along the thickness direction of described resistance to material (1); Between the upper surface of described resistance to material (1) and described steel bushing (2), be provided with multiple air clefts, multiple described air clefts are communicated with top and the air inlet (4) of described hollow bulb (3) respectively.
2. long nozzle according to claim 1, it is characterized in that, the upper surface of described resistance to material (1) is annular, and described resistance to material (1) upper surface is provided with the circumferentially multiple projections (7) spaced apart of upper surface along described resistance to material (1), between adjacent two projections (7), forms along the radially-arranged described air cleft of described resistance to material (1) upper surface.
3. long nozzle according to claim 2, it is characterized in that, described hollow bulb (3) has the first inclined-plane (31) and the second inclined-plane (32) that is positioned at below, described the first inclined-plane (31) and is connected with the first inclined-plane (31), the gradient on the first inclined-plane (31) is greater than the gradient of the second inclined-plane (32), and the gradient on described the second inclined-plane (32) is identical with the gradient at the mouth of a river under described large bag.
4. long nozzle according to claim 3, is characterized in that, described air channel (6) is multiple, multiple described air channels (6) being circumferentially evenly arranged along described ring-like gas chamber (5).
5. long nozzle according to claim 4, is characterized in that, the height of described projection (7) is 1mm-3mm.
6. according to the long nozzle described in any one in claim 1-5, it is characterized in that, described air inlet is communicated with source of the gas by pipeline.
7. long nozzle according to claim 6, is characterized in that, described source of the gas is argon gas source of the gas.
8. long nozzle according to claim 6, is characterized in that, described pipeline is provided with flowmeter and valve.
9. a continuous cast method, is characterized in that, the method is used and pours into a mould according to the long nozzle described in any one in claim 1-8.
10. continuous cast method according to claim 9, is characterized in that, the method comprises the steps:
S1. after finishing, middle bag baking utilize argon gas centering bag to clean;
S2. before cast, add seal washer in the upper end of described long nozzle, and be enclosed within large bag on the mouth of a river, the upper end of long nozzle and the lower mouth of a river of large bag are closely assembled;
S3. by the lower end of described long nozzle with in wrap into mouth of a river assembling;
S4. open long nozzle Argon valve, and to regulate long nozzle argon blowing rate be 40m
3/ h～60m
3/ h.
S5. open mouth of a river slide plate under large bag, make molten steel bag from large bag flows to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589323.4A CN104057078A (en) | 2013-11-20 | 2013-11-20 | Long nozzle and continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589323.4A CN104057078A (en) | 2013-11-20 | 2013-11-20 | Long nozzle and continuous casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104057078A true CN104057078A (en) | 2014-09-24 |
Family
ID=51545173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310589323.4A Pending CN104057078A (en) | 2013-11-20 | 2013-11-20 | Long nozzle and continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104057078A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694866A (en) * | 2017-03-28 | 2017-05-24 | 马鞍山钢铁股份有限公司 | Steel ladle protective sleeve |
| CN109382506A (en) * | 2018-11-20 | 2019-02-26 | 山东钢铁股份有限公司 | A kind of method of molten steel nitrogen increased amount in reduction continuous casting process |
| CN113953503A (en) * | 2021-10-23 | 2022-01-21 | 宜兴市耐火材料有限公司 | Long nozzle for molten steel continuous casting production |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0112582B2 (en) * | 1985-12-02 | 1989-03-01 | Akechi Ceramics Kk | |
| JPH04270037A (en) * | 1991-01-07 | 1992-09-25 | Akechi Ceramics Kk | Nozzle for continuous casting |
| JPH0523808A (en) * | 1991-07-12 | 1993-02-02 | Tokyo Yogyo Co Ltd | Nozzle for continuous casting |
| JPH0531556A (en) * | 1991-07-29 | 1993-02-09 | Tokyo Yogyo Co Ltd | Nozzle for continuous casting |
| US5885473A (en) * | 1996-05-17 | 1999-03-23 | Akechi Ceramics Kabushiki Kaisha | Long nozzle for continuous casting |
| CN201320605Y (en) * | 2008-04-17 | 2009-10-07 | 首钢总公司 | Long water gap combined argon blowing airproof device for continuous casting |
| CN201807713U (en) * | 2010-09-17 | 2011-04-27 | 济南麦哈勃冶金技术开发有限公司 | Immersion type nozzle for gas protection |
| CN202224651U (en) * | 2011-09-15 | 2012-05-23 | 华耐国际（宜兴）高级陶瓷有限公司 | Steel shell for long ladle nozzle |
| CN202291396U (en) * | 2011-10-27 | 2012-07-04 | 周汉全 | Air seal submersed nozzle |
| CN202824650U (en) * | 2012-08-13 | 2013-03-27 | 马鞍山市益江高温陶瓷制造有限公司 | Argon blowing and long nozzle |
| CN202824647U (en) * | 2012-08-28 | 2013-03-27 | 石家庄钢铁有限责任公司 | Continuous casting bale protecting and pouring sealing gasket |
| CN103008639A (en) * | 2011-09-21 | 2013-04-03 | 山西太钢不锈钢股份有限公司 | Continuous casting protection pouring method for austenitic stainless steel |
| CN203003138U (en) * | 2012-12-26 | 2013-06-19 | 安阳钢铁股份有限公司 | Free cleanup steel ladle long nozzle used for continuous casting |
-
2013
- 2013-11-20 CN CN201310589323.4A patent/CN104057078A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0112582B2 (en) * | 1985-12-02 | 1989-03-01 | Akechi Ceramics Kk | |
| JPH04270037A (en) * | 1991-01-07 | 1992-09-25 | Akechi Ceramics Kk | Nozzle for continuous casting |
| JPH0523808A (en) * | 1991-07-12 | 1993-02-02 | Tokyo Yogyo Co Ltd | Nozzle for continuous casting |
| JPH0531556A (en) * | 1991-07-29 | 1993-02-09 | Tokyo Yogyo Co Ltd | Nozzle for continuous casting |
| US5885473A (en) * | 1996-05-17 | 1999-03-23 | Akechi Ceramics Kabushiki Kaisha | Long nozzle for continuous casting |
| CN201320605Y (en) * | 2008-04-17 | 2009-10-07 | 首钢总公司 | Long water gap combined argon blowing airproof device for continuous casting |
| CN201807713U (en) * | 2010-09-17 | 2011-04-27 | 济南麦哈勃冶金技术开发有限公司 | Immersion type nozzle for gas protection |
| CN202224651U (en) * | 2011-09-15 | 2012-05-23 | 华耐国际（宜兴）高级陶瓷有限公司 | Steel shell for long ladle nozzle |
| CN103008639A (en) * | 2011-09-21 | 2013-04-03 | 山西太钢不锈钢股份有限公司 | Continuous casting protection pouring method for austenitic stainless steel |
| CN202291396U (en) * | 2011-10-27 | 2012-07-04 | 周汉全 | Air seal submersed nozzle |
| CN202824650U (en) * | 2012-08-13 | 2013-03-27 | 马鞍山市益江高温陶瓷制造有限公司 | Argon blowing and long nozzle |
| CN202824647U (en) * | 2012-08-28 | 2013-03-27 | 石家庄钢铁有限责任公司 | Continuous casting bale protecting and pouring sealing gasket |
| CN203003138U (en) * | 2012-12-26 | 2013-06-19 | 安阳钢铁股份有限公司 | Free cleanup steel ladle long nozzle used for continuous casting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694866A (en) * | 2017-03-28 | 2017-05-24 | 马鞍山钢铁股份有限公司 | Steel ladle protective sleeve |
| CN109382506A (en) * | 2018-11-20 | 2019-02-26 | 山东钢铁股份有限公司 | A kind of method of molten steel nitrogen increased amount in reduction continuous casting process |
| CN113953503A (en) * | 2021-10-23 | 2022-01-21 | 宜兴市耐火材料有限公司 | Long nozzle for molten steel continuous casting production |
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Application publication date: 20140924 |