CN109622934A - A method of mitigating submersed nozzle heat dissipation - Google Patents
A method of mitigating submersed nozzle heat dissipation Download PDFInfo
- Publication number
- CN109622934A CN109622934A CN201910027240.3A CN201910027240A CN109622934A CN 109622934 A CN109622934 A CN 109622934A CN 201910027240 A CN201910027240 A CN 201910027240A CN 109622934 A CN109622934 A CN 109622934A
- Authority
- CN
- China
- Prior art keywords
- submersed nozzle
- heat dissipation
- mitigating
- insulation layer
- thermal insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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)
- Treatment Of Steel In Its Molten State (AREA)
- Continuous Casting (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
It is that thermal insulation layer is wrapped up to submersed nozzle outer wall in casting process the invention discloses a kind of method of mitigation submersed nozzle heat dissipation.Method of the invention is reliable and stable, easy to operate, low in cost, and submersed nozzle inner wall temperature can be improved, and reduces the absorption of inner wall field trash, further mitigates wadding steel incidence, reduces production cost.
Description
Technical field
The present invention relates to a kind of methods of mitigation submersed nozzle heat dissipation.
Background technique
In continuous casting process, molten steel is easy wadding extremely in submersed nozzle and interrupts casting, not only makes to retain steel in tundish
Liquid and the resistance to material of tundish cancel, when having an effect on production about, cause upstream process increased costs.Cause submersed nozzle wadding steel at
Because there are many, including molten steel temperature is too low, molten steel inclusion is too many and the factors such as submersed nozzle inner wall temperature is low.Wherein soak
Enter low molten steel and the field trash of will cause of formula mouth of a river inner wall temperature in inner wall absorption, condensation, this is the master of submersed nozzle wadding steel
Want the origin cause of formation.In the case where molten steel condition is constant, submersed nozzle inner wall temperature is improved, mitigates condensation and steel of the molten steel in inner wall
The absorption of liquid inclusion reduces the incidence of submersed nozzle wadding steel.
For producing casting process, current research do not refer to by improve submersed nozzle temperature steps come
Reduce the generation of wadding steel.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide it is a kind of mitigation submersed nozzle heat dissipation method,
This method is reliable and stable, easy to operate, low in cost, and submersed nozzle inner wall temperature can be improved, and reduces inner wall field trash
Absorption further mitigates wadding steel incidence, reduces production cost.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A method of mitigating submersed nozzle heat dissipation, in casting process, wraps up thermal insulation layer in submersed nozzle peripheral wall.
Further, the part that thermal insulation layer is wrapped up on the peripheral wall is that submersed nozzle is wrapped in end to crystallizer from centre
Middle section more than molten steel face.
Further, the thermal insulation layer is changeable type material.
Further, the changeable type material is heat insulation foam.
Further, the thermal insulation layer is basalt fibre.
Further, the thermal insulation layer is in rectangle, and length is equal to the circumferential length of submersed nozzle, will be described heat-insulated
Layer is fixed after the submersed nozzle peripheral wall one circle by heat-resisting elastic ring.
Further, it is fixed by three elastic rings.
Compared with prior art, advantageous effects of the invention:
Method of the present invention by wrapping up thermal insulation layer in submersed nozzle peripheral wall, effective mitigate flow through in submersed nozzle
Molten steel heat loss, reduce molten steel submersed nozzle inner wall condensation and molten steel inclusion submersed nozzle inner wall adsorb,
To mitigate wadding steel incidence.
Detailed description of the invention
Thermal insulation layer setting structure schematic diagram Fig. 1 of the invention.
Description of symbols: 1- submersed nozzle ontology, 2- heat insulation foam.
Specific embodiment
Before casting slab, round billet etc., the fuel gas such as natural gas is taken to heat submersed nozzle, heating process first
When, one layer of heat insulation foam 2 is wrapped up in submersed nozzle outside, sees Fig. 1.
In casting, remove the heat insulation foam 2 of submersed nozzle bottom, the amount removed does not influence molten steel, then opens and pour.
It usually opens after pouring, the molten steel flowed through in submersed nozzle can be by submersed nozzle wall surface dissipated heat, and submersed nozzle is all
Wall surface is ambient air, and temperature is relatively low, and heat loss is very fast.After method of the invention, the temperature of submersed nozzle peripheral wall
Less by heat insulation foam dispersed heat, temperature gradient is reduced, and improves the temperature of peripheral wall, and then improve molten steel inner wall temperature,
Mitigate molten steel because inner wall temperature is low, the hair of condensation and molten steel inclusion the submersed nozzle wadding steel caused by inner wall absorption occurs
It is raw.
In another embodiment: the thermal insulation layer is in rectangle, and length is equal to the circumferential length of submersed nozzle, will be described
Thermal insulation layer is fixed after the submersed nozzle peripheral wall one circle by three heat-resisting elastic rings, fixes both ends and centre respectively.
Disassembly and installation is convenient in this way.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
Claims (7)
1. a kind of method for mitigating submersed nozzle heat dissipation, it is characterised in that: in casting process, in submersed nozzle peripheral wall packet
Wrap up in thermal insulation layer.
2. it is according to claim 1 mitigate submersed nozzle heat dissipation method, it is characterised in that: on the peripheral wall package every
The part of thermosphere is submersed nozzle from intermediate end of wrapping to middle section more than Mold face.
3. the method according to claim 1 for mitigating submersed nozzle heat dissipation, it is characterised in that: the thermal insulation layer is variable
Profile material.
4. the method according to claim 3 for mitigating submersed nozzle heat dissipation, it is characterised in that: the changeable type material is
Heat insulation foam.
5. the method according to claim 1 for mitigating submersed nozzle heat dissipation, it is characterised in that: the thermal insulation layer is the Black Warrior
Rock fiber.
6. the method according to claim 1 for mitigating submersed nozzle heat dissipation, it is characterised in that: the thermal insulation layer is in square
Shape, and length be equal to submersed nozzle circumferential length, by the thermal insulation layer around the submersed nozzle peripheral wall one circle after by
Heat-resisting elastic ring is fixed.
7. the method according to claim 6 for mitigating submersed nozzle heat dissipation, it is characterised in that: consolidated by three elastic rings
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027240.3A CN109622934A (en) | 2019-01-11 | 2019-01-11 | A method of mitigating submersed nozzle heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027240.3A CN109622934A (en) | 2019-01-11 | 2019-01-11 | A method of mitigating submersed nozzle heat dissipation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109622934A true CN109622934A (en) | 2019-04-16 |
Family
ID=66061783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910027240.3A Pending CN109622934A (en) | 2019-01-11 | 2019-01-11 | A method of mitigating submersed nozzle heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109622934A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126951A (en) * | 1984-11-22 | 1986-06-14 | Kurosaki Refract Co Ltd | Preheating method of nozzle for continuous casting |
| JPH04178250A (en) * | 1990-11-09 | 1992-06-25 | Toshiba Ceramics Co Ltd | Continuous casting nozzle |
| EP0539666A2 (en) * | 1991-10-31 | 1993-05-05 | Inland Steel Company | Electromagnetic metering of molten metal |
| JPH0751818A (en) * | 1993-08-10 | 1995-02-28 | Kurosaki Refract Co Ltd | Carbon containing nozzle for casting |
| JP2001096344A (en) * | 1999-09-28 | 2001-04-10 | Toshiba Ceramics Co Ltd | Immersion nozzle |
| CN1072536C (en) * | 1997-03-24 | 2001-10-10 | 北美耐火材料公司 | Refractory pour tube with cast plate |
| CN1537689A (en) * | 2003-04-18 | 2004-10-20 | 上海彭浦特种耐火材料厂 | Carbonless composite long sproue pouring shaping manufacturing method |
| CN2649224Y (en) * | 2003-08-16 | 2004-10-20 | 青岛双鹰耐火材料有限公司 | Agglomeration-proofing immersion water gap for square billet continuous casting |
| JP2006205179A (en) * | 2005-01-25 | 2006-08-10 | Nippon Steel Corp | Continuous casting method of molten steel |
| JP2008105042A (en) * | 2006-10-24 | 2008-05-08 | Nippon Steel Corp | Method for preheating nozzle for pouring molten steel |
| JP2009107012A (en) * | 2007-11-01 | 2009-05-21 | Akechi Ceramics Co Ltd | Enclosure heater for nozzle for continuous casting |
| CN201960102U (en) * | 2011-03-03 | 2011-09-07 | 莱芜钢铁股份有限公司 | Long nozzle for continuously casting pouring tundish |
| CN203621484U (en) * | 2013-11-18 | 2014-06-04 | 华耐国际（宜兴）高级陶瓷有限公司 | Submerged nozzle with insulating layer |
| JP2014208375A (en) * | 2013-03-28 | 2014-11-06 | Ｊｆｅスチール株式会社 | Nozzle for high-temperature molten material and casting method using the same |
| CN106475552A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | A kind of submersed nozzle eliminating wadding stream and using method |
| CN207547622U (en) * | 2017-12-13 | 2018-06-29 | 浙江铁狮高温材料有限公司 | The special-shaped double-side-hole submersed nozzle of slab |
-
2019
- 2019-01-11 CN CN201910027240.3A patent/CN109622934A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61126951A (en) * | 1984-11-22 | 1986-06-14 | Kurosaki Refract Co Ltd | Preheating method of nozzle for continuous casting |
| JPH04178250A (en) * | 1990-11-09 | 1992-06-25 | Toshiba Ceramics Co Ltd | Continuous casting nozzle |
| EP0539666A2 (en) * | 1991-10-31 | 1993-05-05 | Inland Steel Company | Electromagnetic metering of molten metal |
| JPH0751818A (en) * | 1993-08-10 | 1995-02-28 | Kurosaki Refract Co Ltd | Carbon containing nozzle for casting |
| CN1072536C (en) * | 1997-03-24 | 2001-10-10 | 北美耐火材料公司 | Refractory pour tube with cast plate |
| JP2001096344A (en) * | 1999-09-28 | 2001-04-10 | Toshiba Ceramics Co Ltd | Immersion nozzle |
| CN1537689A (en) * | 2003-04-18 | 2004-10-20 | 上海彭浦特种耐火材料厂 | Carbonless composite long sproue pouring shaping manufacturing method |
| CN2649224Y (en) * | 2003-08-16 | 2004-10-20 | 青岛双鹰耐火材料有限公司 | Agglomeration-proofing immersion water gap for square billet continuous casting |
| JP2006205179A (en) * | 2005-01-25 | 2006-08-10 | Nippon Steel Corp | Continuous casting method of molten steel |
| JP2008105042A (en) * | 2006-10-24 | 2008-05-08 | Nippon Steel Corp | Method for preheating nozzle for pouring molten steel |
| JP2009107012A (en) * | 2007-11-01 | 2009-05-21 | Akechi Ceramics Co Ltd | Enclosure heater for nozzle for continuous casting |
| CN201960102U (en) * | 2011-03-03 | 2011-09-07 | 莱芜钢铁股份有限公司 | Long nozzle for continuously casting pouring tundish |
| JP2014208375A (en) * | 2013-03-28 | 2014-11-06 | Ｊｆｅスチール株式会社 | Nozzle for high-temperature molten material and casting method using the same |
| CN203621484U (en) * | 2013-11-18 | 2014-06-04 | 华耐国际（宜兴）高级陶瓷有限公司 | Submerged nozzle with insulating layer |
| CN106475552A (en) * | 2015-08-31 | 2017-03-08 | 鞍钢股份有限公司 | A kind of submersed nozzle eliminating wadding stream and using method |
| CN207547622U (en) * | 2017-12-13 | 2018-06-29 | 浙江铁狮高温材料有限公司 | The special-shaped double-side-hole submersed nozzle of slab |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |