CN103014366B - Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof - Google Patents
Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof Download PDFInfo
- Publication number
- CN103014366B CN103014366B CN201110280063.3A CN201110280063A CN103014366B CN 103014366 B CN103014366 B CN 103014366B CN 201110280063 A CN201110280063 A CN 201110280063A CN 103014366 B CN103014366 B CN 103014366B
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- steel ingot
- cooling
- lobe
- electroslag remelting
- 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
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a large-scale electroslag remelting steel ingot enhancement cooling apparatus and a method thereof. The apparatus comprises a crystallizer having a layered and section-separated structure, wherein the outer part of each section of the crystallizer is provided with a hanging device and a curved rotation supporting device, the bottom of the curved rotation supporting device is fixedly supported through a trolley, the trolley is provided with a bottom water tank, and the outer side of each section of the crystallizer is provided with an independent cooling spraying device. The enhancement cooling method by using the apparatus comprises: during an electroslag remelting process, independently opening the wall of the section type crystallizer on the lower end solid steel ingot position in a layered manner along with constant increase of a steel ingot solidification shell height, and adopting the nozzle to directly spray cooling water onto the surface of the solidification shell so as to achieve an enhancement cooling effect, such that the steel ingot achieves effects of directional solidification and axial crystallization. In addition, the crystallizer having the layered and section-separated structure has characteristics of simple structure, and easy assembly and disassembly so as to effectively improve on-site operation efficiency.
Description
Technical field
The invention belongs to electric dreg remelting technology field, particularly a kind of large-scale electroslag remelting steel ingot strengthening refrigerating unit and method.
Background technology
Crystallizer is the heart in esr equipment, and the solidifying of Mold, conducting heat has material impact to ingot quality.In electroslag remelting crystalizer, the process of setting of steel ingot is typical directional freeze process, has a side and heats the cooling heat compensator conducting property of a side, the defect such as segregation and shrinkage porosite that this directional freeze structure can basically eliminate electroslag remelting steel ingot.Electroslag remelting steel ingot is in the process of whole condensation, due to the reason of expanding with heat and contract with cold, between steel ingot and crystallizer wall, can form air gap, the existence of air gap declines heat-conductive characteristic between steel ingot and crystallizer wall, the speed that steel ingot outwards conducts heat is affected, and makes crystallizer derive heat flow density and reduces, and ingot solidification speed declines, along with the maximization of steel ingot, this phenomenon is more serious.And being created in conventional crystallizer of air gap is inevitable phenomenon, so, strengthen Cooling Heat Transfer process by the structure of change crystallizer and there is vital role to improving ingot quality.
While adopting traditional crystallizer esr large-scale steel ingot, after the interior ingot solidification of crystallizer, between steel ingot and crystallizer wall, there is air gap to produce, thereby reduce the cooling performance of steel ingot, thereby the column crystal of large-scale steel ingot inner orientation consolidated structure can not extend to steel ingot centre, steel ingot centre process of setting is similar to traditional die casting, easily produces some mass defects that occur in die casting, as segregation and shrinkage porosite etc.In esr process, liquid metal solidifies the discharged heat overwhelming majority and is taken away by water coolant in crystallizer.But at present in the design process of crystallizer, while relating to the problem of water-cooling system, can only see about parameters such as cooling water flow, flow velocity, the import and export temperature difference, and for water coolant the concrete flow process in crystallizer, comprise the technical study such as velocity flow profile, temperature distribution of water coolant in crystallizer.And crystallizer was all the transformation of flow velocity, watercooling jacket and crystallizer wall structure to water coolant for the adjusting major part of cooling performance in the past.At present, design about large-scale electroslag remelting crystalizer structure aspects only has layered structure, and for example, 120 tons of crystallizer for electroslag furnace of Chinese the first heavy-duty machinery group are to be made up of upper and lower double-layer structure, but just considering for dismounting aspect, is not to design from cooling angle.Existing electroslag remelting technique does not solve air gap, crystallizer wall and incrustation scale all the time well on heat conducting impact, and this just makes the production efficiency of esr and the raising of ingot quality be subject to certain restriction, has also caused certain wasting of resources simultaneously.
Summary of the invention
For improving crystallization direction, the crystal grain thinning of large-scale electroslag remelting steel ingot, improve the mechanical property of steel ingot, the invention provides a kind of large-scale electroslag remelting steel ingot strengthening refrigerating unit and method.
For achieving the above object, the technical solution used in the present invention is: a kind of large-scale electroslag remelting steel ingot strengthening refrigerating unit, comprise crystallizer, described crystallizer wall is layering split-type structure, the each lobe external body of crystallizer wall is equipped with erecting by overhang and can curves bracing or strutting arrangement, bracing or strutting arrangement be can curve and mechanical type or fluid pressure type structure adopted, can curve support means bottom portion by chassis fixed support, on chassis, be provided with end water tank, the external side of each crystallizer lobe is provided with independently cool water shower device.
The upper and lower import and export of the cooling water seam in described crystallizer wall between copper parietal layer and steel parietal layer are connected respectively water-in and the water outlet of the water-cooled tube configuring on lobe formula crystallizer wall, simultaneously all built-in independently cooling water recirculation systems of every lobe crystallizer wall.
A kind of large-scale electroslag remelting steel ingot strengthening method of cooling, be applied to above-mentioned large-scale electroslag remelting steel ingot strengthening refrigerating unit, in the time of esr large-scale steel ingot, by successively open crystallizer wall to the steel ingot solidifying spray strengthening cooling, to increase the directional freeze thermograde of steel ingot inside, promote large-scale steel ingot directional freeze structure to extend to steel ingot center; Concrete steps are as follows:
(1) before founding starts, first water coolant is passed into respectively in each lobe body of layering split-type crystallizer from cooling water intake, then put into electrode slag charge or directly adopt fritting slag charge in the crystallizer of closure state;
(2) consumable electrode is immersed in the slag bath of crystallizer, then make its fusing to consumable electrode energising;
(3) in the time that the height of ingot solidification shell exceedes lowest layer lobe height, control can curve bracing frame and open lowest layer lobe body, and steel ingot is come out, and opens cool water shower device and it is strengthened cooling;
(4) along with the height of electroslag remelting steel ingot solidified shell continues to raise, progressively open upper strata lobe formula crystallizer wall strengthen cooling, but topmost one deck crystallizer lobe body until open again when de-ingot;
(5) said process lasts till that comsumable melt finishes, and stops consumable electrode energising, proposes residue consumable electrode, and cooling water recirculation system continues operation until steel ingot is complete closes when cooling.
The invention has the beneficial effects as follows:
(1) crystallizer provided by the invention can be with the increasing of ingot solidification base shell, and progressively open the lobe formula crystallizer wall of one, two layers of lower ends, and water coolant directly sprays surface of steel ingot, has avoided the impact on steel ingot directional freeze process of air gap and crystallizer wall;
(2) in crystallizer wall, be provided with independently water-cooling system, in more existing crystallizer, water coolant effective stroke shortens greatly, can make water coolant keep lesser temps always, regulate respectively the cooling water flow of each lobe crystallizer wall according to actual founding situation, thereby reach good strengthening cooling performance;
(3) can curve the design of bracing or strutting arrangement, can in fusion-casting process, open easily at any time, operate lobe formula crystallizer wall, be the cooling condition that provides of follow-up strengthening;
(4) successively open lobe formula crystallizer wall, adopt cool water shower mode surface of steel ingot to be strengthened cooling, the flow of water coolant reduces greatly, thereby reduce production costs, force the type of cooling that steel ingot can evenly be solidified rapidly simultaneously, and reach the effect of directional freeze and the axial crystallization of centre portions, guarantee that steel ingot is without surface, internal fissure, without center segregation phenomenon.
Accompanying drawing explanation
Fig. 1 is 3 layer of 3 lobe electroslag remelting crystalizer open mode structural representation of strengthening refrigerating unit of the embodiment of the present invention;
Fig. 2 is 3 layer of 3 lobe electroslag remelting crystalizer closure state structural representation of strengthening refrigerating unit of the embodiment of the present invention;
Fig. 3 is 3 layer of 3 lobe electroslag remelting crystalizer closure state diagrammatic cross-section of strengthening refrigerating unit of the embodiment of the present invention;
In figure: 1 dummy electrode, 2 consumable electrodes, 3 conductive cross arms, 4 crystallizer walls, 5 can curve bracing or strutting arrangement, 6 water outlets, 7 water-ins, 8 chassis, 9 slag baths, 10 metal pools, 11 steel ingots, 12 ingot solidification shells, 13 cooling water seams, 14 nozzles, 15 air gaps, 16 erectings by overhang, 17 bronze medal parietal layers, 18 steel parietal layers, 19 slag crusts.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Large-scale electroslag remelting steel ingot strengthening refrigerating unit provided by the invention, comprise crystallizer, crystallizer wall 4 adopts 3 layer of 3 lobe formula structure, the each lobe external body of crystallizer wall 4 is equipped with the curved bracing or strutting arrangement 5 of erecting by overhang 16 and folding crystallizer wall lobe body, can curve bracing or strutting arrangement 5 and adopt fluid pressure type structure, can curve bracing or strutting arrangement 5 bottoms by chassis 8 fixed supports, on chassis 8, be provided with end water tank, the external side of each crystallizer lobe is provided with independently cool water shower device, each cool water shower device is provided with independent nozzle 14, nozzle 14 connects water-cooled tube and water supply circulatory system.
The upper and lower import and export of the cooling water seam 13 in described crystallizer wall 4 between copper parietal layer 17 and steel parietal layer 18 are connected respectively water-in 7 and the water outlet 6 of the water-cooled tube configuring on lobe formula crystallizer wall, simultaneously all built-in independently cooling water recirculation systems of every lobe crystallizer wall 4.
Application said apparatus, large-scale electroslag remelting steel ingot strengthening method of cooling provided by the invention, in the time of esr large-scale steel ingot, when ingot solidification height exceedes after steel ingot diameter, open lower floor's wall of the electroslag remelting crystalizer of the many valve structures of multilayer, directly, to the lower part spraying cooling that solidifies steel ingot, to increase the directional freeze thermograde of steel ingot inside, promote large-scale steel ingot directional freeze structure to extend to steel ingot center; Concrete process for cooling process is as follows:
(1) before founding starts, first water coolant is passed in crystallizer from cooling water intake 7, now lobe formula crystallizer is in closure state, in the slag bath 9 of crystallizer, put into thickness and be the electrode slag charge of 120～250 millimeters, consumable electrode 2 is immersed to 20～50 mm depths in slag bath 9, then consumable electrode 2 is switched on, electric current imports in slag charge by consumable electrode 2, slag charge, because self-resistance is compared with being heated greatly, starts esr process;
(2) along with the lasting rising of slag charge temperature, consumable electrode 2 also starts slowly to melt, formation molten steel drips and drops in slag bath 9, because molten steel density is greater than slag charge, molten steel drips and can flow in metal pool 10 through slag bath 9, the molten steel of pressing close to crystallizer wall in crystallizer wall under the cooling effect of water coolant solidifies rapidly, along with the further fusing of consumable electrode 2 and the peripheral molten steel of metal pool 10 further solidify, slag bath 9 the superiors and metal pool 10 interfaces form meniscus, and metal pool 10 lower interior part are the solid-liquid mixing steel ingots 11 that are about to solidify, steel ingot 11 peripheries have been solidified and have been formed ingot solidification shell 12, at this moment between the steel ingot beginning to take shape and crystallizer wall, start to form slag crust 19 and air gap 15, thermal conduction resistance starts to increase, heat conducting effect starts to decline,
(3) in the time that the height of ingot solidification shell 12 exceedes lowest layer lobe formula crystallizer wall, by to the control that can curve bracing or strutting arrangement 5, lowest layer lobe formula crystallizer wall is opened, steel ingot 11 is exposed, now open the nozzle 14 of cool water shower device and it is strengthened cooling; The inner rapid solidification of steel ingot 11, reach the effect of directional freeze and the axial crystallization of centre portions, steel ingot 11 upper sections still adopt in lobe formula crystallizer wall independently cooling system to carry out cooling, in each lobe formula crystallizer wall, be provided with independently cooling water recirculation system, each system is not communicated with mutually, according to the surface cool situation of exposing steel ingot 11, the cooling water flow of each lobe formula crystallizer wall of not opening above it is regulated respectively, to reach the evenly cooling of steel ingot 11;
(4) along with the carrying out of esr process, the height of ingot solidification shell 12 continues to raise, and progressively opens upper strata lobe formula crystallizer wall and strengthens cooling;
(5) said process lasts till that consumable electrode 2 fusings finish, and stops consumable electrode 2 to switch on, and proposes to remain out consumable electrode 2, and cooling system continues operation, treat that steel ingot 11 solidifies completely, until the complete cooling water recirculation system of closing when cooling of steel ingot 11 is taken out steel ingot 11.
Claims (2)
1. one kind large-scale electroslag remelting steel ingot strengthening refrigerating unit, comprise crystallizer, it is characterized in that: the crystallizer wall of described crystallizer is layering split-type structure, cooling water seam in crystallizer wall between copper parietal layer and steel parietal layer upper, lower import and export connect respectively water-in and the water outlet of the water-cooled tube of lobe formula crystallizer wall configuration, each lobe external surface of crystallizer wall is all fixedly connected with erecting by overhang and can curves bracing or strutting arrangement, can curve the bottom of bracing or strutting arrangement by chassis fixed support, on chassis, be provided with end water tank, the external side of each crystallizer lobe is provided with independently cool water shower device, every lobe crystallizer wall is built-in independently cooling water recirculation system all.
2. one kind large-scale electroslag remelting steel ingot strengthening method of cooling, application rights requires the large-scale electroslag remelting steel ingot strengthening refrigerating unit described in 1, it is characterized in that: in the time of esr large-scale steel ingot, by successively open crystallizer wall to the steel ingot solidifying spray strengthening cooling, to increase the directional freeze thermograde of steel ingot inside, promote large-scale steel ingot directional freeze structure to extend to steel ingot center, concrete steps are as follows:
(1) before founding starts, first water coolant is passed into respectively in each lobe body of layering split-type crystallizer, then put into electrode slag charge or directly adopt fritting slag charge in the crystallizer of closure state;
(2) consumable electrode is immersed in the slag bath of crystallizer, then make its fusing to consumable electrode energising;
(3) in the time that the height of ingot solidification shell exceedes lowest layer lobe height, control can curve bracing frame and open lowest layer lobe body, and steel ingot is come out, and opens cool water shower device and it is strengthened cooling;
(4) along with the height of electroslag remelting steel ingot solidified shell continues to raise, progressively open upper strata lobe formula crystallizer wall and strengthen coolingly, topmost one deck crystallizer lobe body is until open when de-ingot again;
(5) said process lasts till that comsumable melt finishes, and stops consumable electrode energising, proposes residue consumable electrode, and cooling water recirculation system continues operation until steel ingot is complete closes when cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280063.3A CN103014366B (en) | 2011-09-20 | 2011-09-20 | Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110280063.3A CN103014366B (en) | 2011-09-20 | 2011-09-20 | Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103014366A CN103014366A (en) | 2013-04-03 |
| CN103014366B true CN103014366B (en) | 2014-05-14 |
Family
ID=47963476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110280063.3A Expired - Fee Related CN103014366B (en) | 2011-09-20 | 2011-09-20 | Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103014366B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436709B (en) * | 2013-08-27 | 2014-10-01 | 东北大学 | Device and method for preparing electroslag remelting ingot employing tubular electrode additional consumable blender |
| CN109047685B (en) * | 2018-09-07 | 2020-06-02 | 乌克兰国家科学院E.O.巴顿电焊接研究所 | Method for preparing steel ingot |
| CN111154985B (en) * | 2020-02-25 | 2023-11-28 | 钢铁研究总院 | Large electroslag furnace high-strength cooling directional solidification crystallizer and solidification process |
| CN114438337B (en) * | 2022-01-28 | 2023-08-15 | 苏州大学 | Method for carrying out electroslag remelting by single-inlet multi-outlet type water-cooling crystallizer electroslag remelting device |
| CN114700481B (en) * | 2022-04-06 | 2023-05-12 | 苏州大学 | Device and method for refining ingot tissue and improving surface quality of ingot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187399A (en) * | 1997-01-07 | 1998-07-15 | 攀枝花钢铁（集团）公司钢铁研究院 | Mould for continuous casting |
| EP0909597A1 (en) * | 1997-10-14 | 1999-04-21 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Crystalliser for the continuous casting of thin slabs |
| CN2551373Y (en) * | 2002-06-28 | 2003-05-21 | 宝山钢铁股份有限公司 | Flexible contact electromagnetic continuous casting mould |
| CN102069163A (en) * | 2010-12-24 | 2011-05-25 | 中冶京诚工程技术有限公司 | Crystallizer, device and method for producing casting blank, casting blank and casting blank with super-large section |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4822893B1 (en) * | 1968-08-08 | 1973-07-10 | ||
| JPH0822893A (en) * | 1994-07-07 | 1996-01-23 | Canon Inc | Fluorescent lamp dimmer |
-
2011
- 2011-09-20 CN CN201110280063.3A patent/CN103014366B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187399A (en) * | 1997-01-07 | 1998-07-15 | 攀枝花钢铁（集团）公司钢铁研究院 | Mould for continuous casting |
| EP0909597A1 (en) * | 1997-10-14 | 1999-04-21 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Crystalliser for the continuous casting of thin slabs |
| CN2551373Y (en) * | 2002-06-28 | 2003-05-21 | 宝山钢铁股份有限公司 | Flexible contact electromagnetic continuous casting mould |
| CN102069163A (en) * | 2010-12-24 | 2011-05-25 | 中冶京诚工程技术有限公司 | Crystallizer, device and method for producing casting blank, casting blank and casting blank with super-large section |
Non-Patent Citations (1)
| Title |
|---|
| JP特公昭48-22893 1973.07.10 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103014366A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103014366B (en) | Large-scale electroslag remelting steel ingot enhancement cooling apparatus and method thereof | |
| CN105734369B (en) | The heat top casting technique of φ 784mm 7xxx 7 series extra super duralumin alloy poles | |
| CN101745611B (en) | Method and apparatus for producing high-strength aluminum slabs | |
| CN102380588B (en) | Intermediate-frequency induction and directional solidification ingot casting process and equipment utilizing same | |
| CN106890985B (en) | It is a kind of to be used to manufacture the method that the casting device without shrinkage cavity casting is cast | |
| WO2020237866A1 (en) | Electromagnetic semi-continuous casting method for non-ferrous metal and alloy thereof | |
| WO2021035602A1 (en) | Electromagnetic semi-continuous casting device and method with cooling process capable of being accurately matched and adjusted | |
| CN109663892B (en) | Progressive solidification forming device for large cast ingot or casting blank | |
| CN204474736U (en) | A kind of acceleration condensation crystallizer | |
| CN106925735A (en) | A kind of device and method for preparing big specification high-quality aluminium alloy cast ingot | |
| CN104259413A (en) | Continuous casting system and process producing large-specification elliptical billets | |
| CN104493112B (en) | Steel ingot casting mold and casting method | |
| CN112692272B (en) | Two-dimensional casting forming device and method for metal cast ingot | |
| CN102069163A (en) | Crystallizer, device and method for producing casting blank, casting blank and casting blank with super-large section | |
| CN202945301U (en) | Cooling device of electroslag remelting crystallizer | |
| WO2021035604A1 (en) | Low-cold electromagnetic semi-continuous casting device and method | |
| WO2020237865A1 (en) | Electromagnetic semi-continuous casting device for nonferrous metals and alloys thereof | |
| CN102554191B (en) | Aluminum-magnesium alloy composite casting device | |
| CN211848096U (en) | High-purity purification and high-homogenization casting system for magnesium alloy and magnesium-lithium alloy ingot blank | |
| CN203411593U (en) | Electroslag remelting crystallizer | |
| CN110315041B (en) | Method for preparing large-specification 7XXX series aluminum alloy round ingot by multi-source ultrasonic-assisted semi-continuous casting | |
| CN204975244U (en) | Compound layer circle base electromagnetism casting machine of bimetal | |
| CN101298092B (en) | Method for producing movable core low segregation large-sized hollow steel ingot | |
| CN204209084U (en) | A kind of continuous casting system producing the oval base of large gauge | |
| CN109128103B (en) | Device and method for preparing composite roller/composite steel ingot by electroslag casting method |
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 |
Granted publication date: 20140514 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |