CN100388993C - Method of regulating molten steel overheat and water cooling sprue gate device - Google Patents
Method of regulating molten steel overheat and water cooling sprue gate device Download PDFInfo
- Publication number
- CN100388993C CN100388993C CNB2005100440996A CN200510044099A CN100388993C CN 100388993 C CN100388993 C CN 100388993C CN B2005100440996 A CNB2005100440996 A CN B2005100440996A CN 200510044099 A CN200510044099 A CN 200510044099A CN 100388993 C CN100388993 C CN 100388993C
- Authority
- CN
- China
- Prior art keywords
- water
- molten steel
- mouth
- sprue gate
- water cooling
- 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.)
- Expired - Fee Related
Links
Landscapes
- Continuous Casting (AREA)
Abstract
The present invention discloses a method of regulating molten steel overheat and a water cooling sprue gate device, which belongs to the technical field of pouring devices of metallurgy. The present invention is characterized in that molten steel flows into a crystallizer by the water cooling sprue gate with a circulating water heat exchanger, and the superheat degree of the molten steel can be moderately reduced in the pouring process. The basic structure of the sprue gate with a circulating water heat exchanger is composed of five parts: a water gap wall, a water cooling sleeve, an upper and a lower end covers, and a pouring slide plate. The water gap wall which is arranged between the upper and the lower end covers forms a sealing chamber which receives cooling water with a water cooling sleeve; the water cooling sleeve is provided with a water inlet and a water outlet, and the cooling water forms a path. The present invention has the advantages that firstly, the superheat degree of the molten steel which enters the crystallizer can be moderately reduced; secondly, the water gap does not nodulate and make sleeve eyes blocked; cast strands are stable; thirdly, the present invention can be repeatedly used, and the service life is long.
Description
Technical field
The invention discloses a kind of method and water cooling sprue gate device of adjusting molten steel overheat.Belong to metallurgical casting equipment technical field.
Background technology
For the production of steel, two hope that people generally have, the one, the liquid steel temperature of wishing to enter crystallizer is as far as possible near the setting temperature of target steel grade, and the molten steel overheat that enters crystallizer in other words is as much as possible little.Because the low overheat cast had both helped improving the quality of products, also help enhancing productivity.But accurately control low overheat is very difficult; The 2nd, wish to have certain aluminium content in the low and steel that oxygen content in the steel tries one's best, to improve the quality of steel.People are for deoxidation and improve steel, the most effectively add aluminium in molten steel, so that obtain expected effect.But the molten steel that adds behind the aluminium is clamminess, and the aluminium deoxidation product that remains in the steel (mainly is Al
2O
3) can cause mouth of a river inwall dross cover eye, cause the passage at the mouth of a river to diminish or stop up.This is because Al
2O
3Fusing point exists with solid particle in molten steel up to 2050 ℃, has affinity with refractory material.When steel flow during through the refractory material mouth of a river, the Al in the steel
2O
3Field trash just is adsorbed on the inwall that is deposited on the mouth of a river, stops up when deposition is enriched to the dross cover eye that to a certain degree just causes the mouth of a river.Cast aluminum killed steel is especially obvious.For this reason, people have thought a lot of ways, as, change mouth of a river material, improve the class of anti-the material; The Argon air purge; Calcium processing etc.But all can not thoroughly effectively deal with problems,
Usually in the casting process of metallurgical production, the effect of sprue gate is that high-temp liquid is flowed out by the flow of wishing from container (as steel ladle, tundish), so that casting smoothly.Requirement to it is that the life-span is long, the beam flux stabilized, and beam is smooth and easy, and the stream thigh does not loose.
Because at present the mouth of a river of cast usefulness all is that refractory material is made, therefore, the deficiency of existence have following some: 1, can not reduce molten steel overheat; 2, can not reuse safely and effectively; 3, pour into a mould some steel grade and can cause mouth of a river cover eye to stop up, cause the replacing at the mouth of a river or be forced to stopping watering.
Summary of the invention
The present invention is directed to the deficiency of prior art, provide a kind of can reduce the process of molten steel overheat and can reduce molten steel overheat, be difficult for to stop up, can reusable safely and effectively water cooling sprue gate device.
This process that can reduce molten steel overheat that the present invention proposes is characterized in that allowing molten steel flow into crystallizer by the water cooling sprue gate with the recirculated water heat exchanger, can the appropriate degree of superheat that reduces molten steel in the casting process.
The basic structure of the sprue gate of band recirculated water heat exchanger by mouth of a river wall, water collar, up and down end cap, open and water slide plate five parts and form.Mouth of a river wall is installed in up and down and constitutes the airtight chamber that holds cooling water with water collar between the end cap, and water collar is provided with water inlet and delivery port, makes cooling water form passage.The effect of mouth of a river wall is when molten steel passes through, and under the cooling effect of cooling water, forms chill on the wall of the mouth of a river in water collar, and the effect at " the work mouth of a river ", the passage that provides molten steel to pass through in the mouth of a river are provided this chill.Because air gap causes chill to come off, and certain taper will be with in the top of mouth of a river wall, play the effect of hanging the chill cover in order to prevent.
Water inlet links to each other with feedwater piping by metal hose, and delivery port is connected with water return pipeline by metal hose.The effect of water collar is that the wall cooling of the formation mouth of a river is taken away the heat of mouth of a river wall surface with the circulation canal of cooling water, satisfies the cooling requirement.Its internal structure of water collar to satisfy continuous cooling water stable flow through mouth of a river wall surface, guarantee the water yield and the flow velocity that need to bear the pressure that needs.
Open and water the lower end that slide plate is installed in mouth of a river device, can slide along slideway and the bottom surface of being close to water cooling nozzle.Its effect is water cooling nozzle to be opened smoothly water, and forms chill fast, prevent to open water out of control.When needs stop to pour into a mould, open and water slide plate and can help to close beam.
Cooling water enters water collar by water inlet under the effect of water pump, enter cooling recirculation system by the outlet outflow behind the inner surface of the mouth of a river wall of flowing through.
In sum, this water cooling sprue gate device is characterized in that being connected respectively by the mouth of a river wall that can allow steel flow cross of hollow the interior edge of upper end cover, bottom end cover, and the outer of end cap and water collar are connected to form airtight chamber up and down; The top of water collar has water inlet to communicate with airtight chamber, and the bottom of water collar has delivery port to communicate with airtight chamber to constitute the water-cooled circulation canal; The following installation of bottom end cover is with opening of orifice to water slide plate.
Principle of the present invention: when high-temperature molten steel passes through water cooling nozzle, because the effect of cooling, can form certain thickness chill at the inwall of mouth of a river wall, this chill under certain condition, because the steel flow thigh is to the souring in the crystallization forward position of chill, suppress further thickening of chill, solidification front in chill forms the quick circulation of solidifying-washing away-solidifying-washing away in other words, make chill keep stable thickness, just form stable " the work mouth of a river ", molten steel can be stablized and pass through, and the part heat is also changed away.Certainly, it is improper to control, and also can coldly excessively cause to freeze eye pause and water, in order to prevent to freeze eye, need to detect associated temperature information, so that adjust intensity of cooling, because the varied in thickness that the Strength Changes of water-cooled can be regulated the controlled chilling layer is so " the work internal diameter " of water cooling nozzle is adjustable in certain limit.
Water cooling nozzle non-nodulating cover eye be because the composition of the chemical composition of chill and molten steel is identical and steel in field trash not affine, field trash has lost the implantation of bowing, so just can not stop up by adventitious deposit.
The key problem in technology of water cooling nozzle is the chill thickness that forms at the inner surface of mouth of a river wall during by mouth of a river wall by the water-cool control molten steel, stablizes the effect that chill thickness makes it to play " the work mouth of a river ".
Advantage of the present invention, the one, can appropriateness reduce the molten steel overheat that enters crystallizer.The 2nd, mouth of a river non-nodulating cover eye stops up, and casting stream is stable.The 3rd, can reuse, the life-span is long.
Description of drawings
Accompanying drawing is a structural representation of the present invention.Among the figure: 1-steel ladle filling pipe end, the 2-upper end cover, 3-mouth of a river wall, 4-water collar, 5-are opened and are watered slide plate, 6-bottom end cover, 7-delivery port, 8-water inlet.
The specific embodiment
A kind of water cooling sprue gate device is characterized in that the mouth of a river wall 3 that can allow steel flow cross of the hollow of being made by metal is connected to form airtight chamber with water collar 4; Water inlet 8 is arranged at the top of water collar, and airtight chamber and feedwater are communicated, and delivery port 7 is arranged at the bottom of water collar, and airtight chamber and backwater are communicated constitutes the water-cooled circulation canal; The following installation at the mouth of a river is with opening of orifice to water slide plate 5.
This specifically water cooling sprue gate device is characterized in that being connected respectively by the mouth of a river wall 3 that can allow steel flow cross of hollow the interior edge of upper end cover 2, bottom end cover 6, and the outer of end cap and water collar 4 are connected to form airtight chamber up and down; The top of water collar 4 has water inlet 8 to communicate with airtight chamber, and the bottom of water collar has delivery port 7 to communicate with airtight chamber to constitute the water-cooled circulation canal; The following installation of bottom end cover 6 is with opening of orifice to water slide plate 5.
Mouth of a river wall 3 adopts copper material or steel to make, and the vertical section geometry of inner chamber can be the segmentation tapering or the continuous tapering of up big and down small type.Cross-sectional geometry can be round, square, polygonal or other shapes as required.
Open and water slide plate 5 and adopt refractory materials to make.
Upper end cover 2, bottom end cover 6, water collar 4 adopt heat-resisting steels to make.
In order to improve cooling effect, airtight chamber has one laterally to cut off in the water collar, and two parts about it is divided into have two the part connections up and down of a tubular conduit around mouth of a river wall.
The enforcement of water cooling nozzle is example with the continuous casting tundish.According to relevant technological parameters such as steel grade, pulling rates, determine the internal diameter size of suitable mouth of a river wall, and intact with the water collar assembling, after hydrostatic test is qualified, can use.Water cooling nozzle is installed in the tundish upper nozzle below by installing mechanism, water cooling nozzle center line and filling pipe end central lines, the upper surface and the upper slide of water cooling nozzle are combined closely, and the below of water cooling nozzle is equipped with to open and is watered slide plate.Open the aperture of watering slide plate and determine, open to open before watering and water slide plate and be in closed condition according to the pulling rate needs.Water cooling nozzle is equipped with the drainage agent.The water inlet of water jacket is connected intact by the high-pressure metal flexible pipe with feedwater piping, is connected the delivery port of water jacket intact with water return pipeline by the high-pressure metal flexible pipe.Start cooling water circulating pump, cooling water is adjusted to flow and the pressure that needs.Check: the temperature detection instrument of molten steel is normal, and cooling water temperature detects and reports to the police normally, and it is normal that liquid steel temperature and cooling water temperature, flow, pressure signal and continuous casting pulling rate change response.Open when watering when needs, open to open and water slide plate, the drainage agent is flowed out, and realizes opening watering.When open water successfully after, open and water slide plate and can deactivate.
Claims (3)
1. method of adjusting molten steel overheat, it is characterized in that allowing molten steel flow into crystallizer by water cooling sprue gate with the recirculated water heat exchanger, the temperature adjustment of molten steel is reduced to setting temperature near the target steel grade, the water cooling sprue gate of band recirculated water heat exchanger is connected the interior edge of upper end cover (2), bottom end cover (6) respectively by the mouth of a river wall (3) that can allow steel flow cross of hollow, the outer of end cap and water collar (4) are connected to form airtight chamber up and down, the vertical section geometry of mouth of a river wall (3) inner chamber is the segmentation tapering of up big and down small type or continuous tapering; The top of water collar (4) has water inlet (8) to communicate with airtight chamber, and the bottom of water collar has delivery port (7) to communicate with airtight chamber to constitute the water-cooled circulation canal; The following installation of bottom end cover (6) is with opening of orifice to water slide plate (5).
2. water cooling sprue gate device is characterized in that being connected respectively by the mouth of a river wall (3) that can allow steel flow cross of hollow the interior edge of upper end cover (2), bottom end cover (6), and the outer of end cap and water collar (4) are connected to form airtight chamber up and down; The top of water collar (4) has water inlet (8) to communicate with airtight chamber, and the bottom of water collar has delivery port (7) to communicate with airtight chamber to constitute the water-cooled circulation canal; The following installation of bottom end cover (6) is with opening of orifice to water slide plate (5), mouth of a river wall (3) adopts copper material or steel to make, the vertical section geometry of inner chamber, can be the segmentation tapering or the continuous tapering of up big and down small type, cross-sectional geometry can be round, square, polygonal shape as required.
3. water cooling sprue gate device according to claim 2 is characterized in that opening and waters slide plate (5) and adopt refractory material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100440996A CN100388993C (en) | 2005-07-18 | 2005-07-18 | Method of regulating molten steel overheat and water cooling sprue gate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100440996A CN100388993C (en) | 2005-07-18 | 2005-07-18 | Method of regulating molten steel overheat and water cooling sprue gate device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1718327A CN1718327A (en) | 2006-01-11 |
| CN100388993C true CN100388993C (en) | 2008-05-21 |
Family
ID=35930346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100440996A Expired - Fee Related CN100388993C (en) | 2005-07-18 | 2005-07-18 | Method of regulating molten steel overheat and water cooling sprue gate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100388993C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716876A (en) * | 2017-10-17 | 2018-02-23 | 陈淑萍 | A kind of ceramic chip for being used to prepare water cooling inlet guide hole slot inner chamber |
| CN108326276B (en) * | 2018-05-17 | 2023-09-19 | 山东钢铁股份有限公司 | Can adapt to mouth of a river of middle package molten steel superheat degree |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191052Y (en) * | 1994-05-27 | 1995-03-08 | 陈峨 | Cooler for continuous casting |
| CN2200502Y (en) * | 1994-09-07 | 1995-06-14 | 冶金工业部钢铁研究总院 | Air washing cooling water immersion gate |
| CN1119569A (en) * | 1995-07-28 | 1996-04-03 | 冶金工业部钢铁研究总院 | Device for realizing semisolid casting |
| CN1221362A (en) * | 1996-06-07 | 1999-06-30 | 曼内斯曼股份公司 | Casting nozzle for thin strip casting plants |
| CN2452653Y (en) * | 2000-07-06 | 2001-10-10 | 郑州永通特钢有限责任公司 | Condenser and immersion type pour |
-
2005
- 2005-07-18 CN CNB2005100440996A patent/CN100388993C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191052Y (en) * | 1994-05-27 | 1995-03-08 | 陈峨 | Cooler for continuous casting |
| CN2200502Y (en) * | 1994-09-07 | 1995-06-14 | 冶金工业部钢铁研究总院 | Air washing cooling water immersion gate |
| CN1119569A (en) * | 1995-07-28 | 1996-04-03 | 冶金工业部钢铁研究总院 | Device for realizing semisolid casting |
| CN1221362A (en) * | 1996-06-07 | 1999-06-30 | 曼内斯曼股份公司 | Casting nozzle for thin strip casting plants |
| CN2452653Y (en) * | 2000-07-06 | 2001-10-10 | 郑州永通特钢有限责任公司 | Condenser and immersion type pour |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1718327A (en) | 2006-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2683965A1 (en) | Method for continuously casting billet with small cross section | |
| MX2014011691A (en) | Continuous casting equipment. | |
| CN111250672B (en) | Continuous casting ladle final pouring method based on steel passing amount comparison | |
| CN102398004A (en) | Sliding waterslot device capable of preventing vortex | |
| US4064925A (en) | Continuous casting method and apparatus | |
| US5716538A (en) | Discharge nozzle for continuous casting | |
| CN100388993C (en) | Method of regulating molten steel overheat and water cooling sprue gate device | |
| US5072779A (en) | Continuous casting machine of a reduced height with immersed teeming nozzle | |
| SU506273A3 (en) | The method of supplying molten metal on the installation of continuous casting of metal | |
| CN102319885A (en) | Continuous casting method and device for double-nozzle cast ultra-thick plate blank | |
| CN106141157A (en) | Anti-blocking immersion nozzle for molten steel water conservancy diversion | |
| JP4562347B2 (en) | Method and equipment for continuous casting of liquid steel | |
| CN108436071B (en) | Spin-flow long nozzle for continuous casting | |
| CN206535993U (en) | Continuous casting flow control molding casting siphon spout device | |
| CN205393530U (en) | Prevent opening watering to wad a quilt with cotton and flow device | |
| CN114619003A (en) | Small square billet continuous casting process for improving aluminum-containing steel nodulation | |
| CN109396409B (en) | Single-point non-equilibrium protection casting method for producing ultrathin large-size aluminum-containing steel special-shaped blank | |
| KR20230002935A (en) | Immersion nozzle with rotatable insert | |
| CN202270954U (en) | Continuous casting device of double-water-gap pouring extra thick slab | |
| CN113857434A (en) | Metal separation sheet pouring basin device | |
| JP7397499B2 (en) | Molten metal casting method using impact pad in tundish | |
| KR100530101B1 (en) | Dam for Suppression of Vortex in Ingot Steel | |
| WO2005042183A1 (en) | A method and a device for detecting slag | |
| KR20090105371A (en) | Shroud nozzle for continuous casting | |
| Szekeres | Review of strand casting factors affecting steel product cleanliness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20160718 |