CN201807710U - Device for casting oversized fracture surface steel billets - Google Patents
Device for casting oversized fracture surface steel billets Download PDFInfo
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- CN201807710U CN201807710U CN2010205510741U CN201020551074U CN201807710U CN 201807710 U CN201807710 U CN 201807710U CN 2010205510741 U CN2010205510741 U CN 2010205510741U CN 201020551074 U CN201020551074 U CN 201020551074U CN 201807710 U CN201807710 U CN 201807710U
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Abstract
The utility model relates to the steel metallurgic industry, in particular to a device for casting oversized fracture surface steel billets, which comprises a steel ladle, an intermediate tank and a crystallizer, and is characterized in that the lower end of the steel ladle is fixed with a ladle pouring protective cased pipe the outlet end of which is provided with the intermediate tank; the lower part of the intermediate tank is fixed with a crystallizer submersed nozzle; the water outlet of the crystallizer submersed nozzle extends into the crystallizer; the lower end of the crystallizer is provided with a casting blank inducing device; a casting blank traction device is arranged in the casting blank inducing device; and a parent metal feed-in guiding system is arranged above the crystallizer. The utility model provides a device for casting oversized fracture surface steel billets, and the form tolerances and dimensional precision of the device can achieve the same technical indexes with those of the continuous casting slabs and the round slabs.
Description
Technical field
The utility model relates to iron and steel metallurgical industry, particularly a kind of device of the large section steel billet of casting.
Background technology
Along with of the lifting of industries such as machinery manufacturing industry, shipping industry, oil drilling platform, station boiler, extraordinary vehicular traffic, mould manufacturing to steel quality and specification requirement, super-thick steel plate, the demand of thickness 〉=200mm constantly increases, traditional processing technology adopts static ingot through flat-die forging, can obtain the steel plate of thickness requirement, but because forging press ability, smithing technological parameter are limit, the dimensions of steel plate is restricted, and the surface size precision of steel plate, roughness grade number are low.
And the available technology adopting static ingot requires milling train to have big billeting capacity by the split rolling method super-thick steel plate, because lumber recovery is not high due to shape of ingots and the removal end; Adopt the thickness of continuous casting steel billet Rolling Production steel plate, because compression ratio is limit, steel plate thickness is restricted by continuous casting steel billet thickness, and ripe at present sheet billet continuous casting production technology can provide the heavy slab of thickness 400mm, can be used for the rolling of the following steel plate of thickness 150mm; Similar with it, big section pipe material, axle class etc. also has demand to big section continuous cast round billets, and existing round billet continuous casting production technology only can provide the round base of diameter 600mm.
Summary of the invention
The purpose of this utility model provides a kind of thickness of producing can reach the plate slab of 1000mm or the round base that diameter can reach 1200mm, and the first, the cross dimensions of strand particularly thickness or diameter can to reach large-scale static ingot onesize, the second, the internal soundness of strand and surface quality, form tolerance and dimensional accuracy can reach the device of the casting large section steel billet of continuous casting steel billet, the same technical indicator of circle base.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of device of the large section steel billet of casting; which comprises at least steel ladle; pans; crystallizer; it is characterized in that: the lower end of steel ladle is fixed with ladle beam protective casing; the port of export of ladle beam protective casing is equipped with pans; the bottom of pans is fixed with the crystallizer submersed nozzle; the output mouth of a river of crystallizer submersed nozzle extends in the crystallizer; the lower end of crystallizer is equipped with the strand apparatus for deivation; the strand draw-gear places strand apparatus for deivation inside, and the crystallizer top also is equipped with mother metal and sends guidance system to.
Described mother just sends guidance system to and comprises feed mechanism and guiding mechanism two parts, and feed mechanism is made of electronic winding plant; Guiding mechanism is made of the guide roller of horizontal both direction.
The top of described strand draw-gear is connected with dummy ingot mechanism, and the position of the corresponding crystallizer lower ending opening of dummy ingot mechanism is provided with dummy bar head.
The bottom of described pans is fixed with 2-4 and props up the crystallizer submersed nozzle, and the output mouth of a river that 2-4 props up the crystallizer submersed nozzle all extends in the crystallizer.
The shape of described crystallizer is a rectangle or cylindrical, and the sidewall of crystallizer is a copper coin, and copper coin is fixed with primary cooling system outward, and primary cooling system is a cover water cooling body.
The outer upper of described strand apparatus for deivation is fixed with mould vibration device, and other position, the outside of strand apparatus for deivation is fixed with the strand secondary cooling system, strand apparatus for deivation and the interlaced arrangement of strand secondary cooling system.
Described strand secondary cooling system comprises the water supply unit and sprays cooling unit.
Be equipped with locomotive under the described strand secondary cooling system.
The utility model has the advantages that: increased mother metal and sent guidance system to, adopted mother metal and molten steel to pour into a mould simultaneously, molten steel solidifies inside and outside mother metal surface and copper plate of crystallizer surface simultaneously, shortened the solidification process of casting blank section, reduced the setting time of whole section, solved the difficult problem of mid portion solidification and heat transfer overlong time, and the process of setting between molten steel and the mother metal is called reverse solidification, and utilizing the reverse solidification principle is the feasible method that solves ultra-thick plate base or super-large diameter circle base casting.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the structural representation of the utility model embodiment equipment therefor.
Among the figure: 1, steel ladle; 2, ladle beam protective casing; 3, pans; 4, crystallizer submersed nozzle; 5, crystallizer; 6, mould vibration device; 7, dummy ingot mechanism; 8, strand apparatus for deivation; 9, strand secondary cooling system; 10, strand draw-gear; 11, locomotive; 12, strand; 13, mother metal is sent guidance system to; 14, dummy bar head.
The specific embodiment
Embodiment 1
Shown in the structural representation of Fig. 1 present embodiment equipment therefor, this device is mainly sent to guidance system 13 and is constituted by steel ladle 1, ladle beam protective casing 2, pans 3, crystallizer submersed nozzle 4, crystallizer 5, mould vibration device 6, dummy ingot mechanism 7, strand draw-gear 10, mother metal; Steel ladle 1, pans 3, crystallizer 5 are from top to bottom arranged successively, form vertical structure.
The lower end of steel ladle 1 is fixed with ladle beam protective casing 2; the port of export of ladle beam protective casing 2 is equipped with pans 3; the bottom of pans 3 is fixed with crystallizer submersed nozzle 4; the output mouth of a river of crystallizer submersed nozzle 4 extends in the crystallizer 5; the lower end of crystallizer 5 is equipped with strand apparatus for deivation 8; the upper outside of strand apparatus for deivation 8 is fixed with mould vibration device 6; strand draw-gear 10 places strand apparatus for deivation 8 inside; the top of strand draw-gear 10 is connected with dummy ingot mechanism 7; the position of dummy ingot mechanism 7 corresponding crystallizer 5 lower ending openings is provided with dummy bar head 14; strand draw-gear 10 can be realized lifting under the effect of its hydraulic jack; when dummy ingot mechanism 7 rises to peak under the hydraulic jack effect of lower end strand draw-gear 10; the dummy bar head 14 of dummy ingot mechanism 7 is with the complete shutoff of crystallizer 5 lower ending openings; when strand draw-gear 10 descended, dummy ingot mechanism 7 moved down along the strand apparatus for deivation 8 of crystallizer 5 lower ends.
The bottom of pans 3 is fixed with 2-4 and props up crystallizer submersed nozzle 4, and the output mouth of a river that 2-4 props up crystallizer submersed nozzle 4 all extends in the crystallizer 5.
Crystallizer 5 tops also are provided with mother metal and send guidance system 13 to, mother just sends guidance system 13 to and comprises feed mechanism and guiding mechanism two parts, feed mechanism is configured for making the reverse solidification mother metal by the same moved further of strand casting rate by electronic winding plant, both identical with the strand hauling speed, have speed regulation function; The mother metal guiding mechanism is made of the guide roller of horizontal both direction, the accurate fixing position of mother metal in crystallizer, and in sending process to, remain unchanged.
Embodiment 2
The shape of the described crystallizer 5 of the foregoing description is rectangles or cylindrical, and concrete shape decide according to the shape of concrete strand 12, uses the rectangle crystallizer during casting slab, and uses round crystallizer during the round base of casting.The upper end open of crystallizer 5 is connected with crystallizer submersed nozzle 4, the lower ending opening of crystallizer 5 is equipped with dummy ingot mechanism 7, the sidewall of crystallizer 5 is copper coins, copper coin is fixed with primary cooling system outward, primary cooling system is a cover water cooling body, water cooling body each field more all is widely used and does not describe in detail at this, and primary cooling system copper coin and crystallizer 5 shapes match and get final product.
Embodiment 3
Present embodiment and embodiment 1 structure are basic identical, difference is to have increased strand secondary cooling system 9, the outer upper of strand apparatus for deivation 8 is fixed with mould vibration device 6, other position, the outside of strand apparatus for deivation 8 is fixed with strand secondary cooling system 9, strand apparatus for deivation 8 and the 9 interlaced arrangements of strand secondary cooling system; Strand secondary cooling system 9 comprises the water supply unit and sprays cooling unit, the water supply unit provides strand secondary cooling water source, injection unit is to the cooling water of the surfaces externally and internally jet atomization of strand, crystallizer 5 outer field primary cooling systems are once cooled off strand, strand 12 solidifies formation base shell through once cooling off the rear surface, but inside still has part not solidify fully, realizes solidifying fully of strand 12 through the injection cooling back of secondary cooling system, forms slab or circle base.
Also be equipped with locomotive 11 under the strand secondary cooling system 9, slab or circle base with finished product after strand is finished lift to locomotive 11, and finally slab or the circle base integral body that will be solidified fully by locomotive 11 hangs out.
Embodiment 4
The main technique method of the foregoing description comprises the following steps:
(1) open the ladle beam protective casing 2 of steel ladle 1 lower end, molten steel flows into pans 3;
When (2) molten steel in the pans 3 is extremely normally poured into a mould liquid level, crystallizer 5 outer field primary cooling system cooling waters are open-minded, strand draw-gear 10 is rising under the effect of hydraulic jack below the crystallizer 5, by dummy ingot mechanism 7 shutoff crystallizers, 5 end openings, opening crystallizer submersed nozzle 4 imports molten steel in the crystallizer 5 by teeming speed, when molten steel contacts at the copper coin with crystallizer 5, condensed consolidating took place under the effect of primary cooling system became the base shell;
When (3) crystallizer submersed nozzle 4 imported crystallizer 5 with molten steel by teeming speed, mother metal was sent guidance system 13 to and is sent mother metal to synchronously in crystallizer 5 by teeming speed, and makes mother metal be in the positions of determining in the crystallizer 5.
(4) strand draw-gear 10 moves down with certain process speed, mould vibration device 6 moves by setup parameter when moving down, realize the vibration demoulding, strand 12 on the strand draw-gear 10 leaves crystallizer 5 outlets and moves down along strand apparatus for deivation 8, crystallizer submersed nozzle 4 continues to import molten steel in crystallizer 5, when strand 12 reaches technological requirement length, crystallizer submersed nozzle 4 is closed, mother metal is sent guidance system 13 to and is stopped to send mother metal in crystallizer 5, strand draw-gear 10 stopped to move downward when strand 12 broke away from crystallizer 5 end openings topmost fully, finished the strand cast;
(5) strand 12 enters secondary cooling system after going out crystallizer, the secondary cooling that strand 12 surfaces obtain spraying water by Temperature Control Model, and the base shell continues to thicken until solidifying fully, forms slab or circle base, and cast finishes;
(6) after cast finishes, can bind to slab or circle base top, and add hoisting ring, slab or circle base break away from haulage gear, and slab that will be solidified fully by locomotive 11 or round base integral body move to and hangs out the position, are hung out by shop traveller.
Above-mentioned mother metal is the cold conditions steel billet, and composition is identical with institute pour steel composition, and steel ladle 1 splendid attire is by electric furnace or converter and the double refining qualified molten steel by requirements such as composition, temperature supply;
The reverse solidification ratio juris is as parent with the cold conditions steel billet, pass crystallizer with certain speed, because the temperature of parent forms enough big degree of supercooling well below the temperature of molten steel in mold at the parent near surface, molten steel begins to solidify growth from the parent surface.The parent ecto-entad that is heated presents fusion trend, and the solid metallic that obtains when parent does not leave crystallizer together with the metal of crystallization newly before the fusing fully is the blank of reverse solidification moulding.
Inject molten steel during production around parent, be the parent of cold conditions this moment in the middle of the molten steel, and the shape chamber that is formed by copper plate of crystallizer limits all around, and copper plate of crystallizer is forced cooling by cooling water.Molten steel is in crystallizer like this, there is the parent super cooling effect centre, periphery has the copper coin super cooling effect, molten steel is at core and periphery while crystallization and freezing, reach enough thickness when supporting the pressure of molten steel at the base shell of periphery, just can leave crystallizer under external force and form strand, solidified the molten steel between strand core and the base shell this moment, continue cooling, crystallization by conducting heat, until solidifying fully, utilizing the reverse solidification principle is the feasible method that solves ultra-thick plate base or super-large diameter circle base casting.
The utility model utilizes metal reverse solidification mechanism, ultra-thick plate base or the cast of super-large diameter circle base are converted into molten steel in the normal cooled and solidified of the contacted periphery of copper plate of crystallizer, strand inside is along the combined process of mother metal periphery reverse solidification, make cast ultra-thick plate base or super-large diameter circle base become possibility, and possess industrial operability.
Owing to adopted mother metal and molten steel to pour into a mould simultaneously, molten steel solidifies inside and outside mother metal surface and copper plate of crystallizer surface simultaneously, shorten the solidification process of slab section, reduced the setting time of whole section, solved the difficult problem of mid portion solidification and heat transfer overlong time.Heat transfer, crystallization, the process of setting that molten steel contacts with the copper plate of crystallizer surface is that common metal heat transfer solidifies.And the process of setting between molten steel and the mother metal is called reverse solidification.
The pouring procedure of this ultra-thick plate base has solved two technical barriers.The one, its product is super thick, large section slab or super-large diameter circle base, rather than ingot casting, the geometry of strand and dimensional accuracy will reach the level of existing continuous casting billet, can or be used for pipe, axle class blank at insulation, the heating direct rolling super-thick steel plate in back, do not need to cut away end to end, recovery rate of iron improves; Secondly because strand inside is the reverse solidification process, absorbed the molten steel heat, the heat that transmits by casting billet surface reduces, and solidification process is accelerated, conventional solidification and heat transfer process core final set has been avoided and composition segregation, the tissue looseness's defective brought in strand inside, and slab quality improves.The problem that has run into when having solved casting super-large diameter circle base equally.
Claims (8)
1. device of large section steel billet of casting; which comprises at least steel ladle (1); pans (3); crystallizer (5); it is characterized in that: the lower end of steel ladle (1) is fixed with ladle beam protective casing (2); the port of export of ladle beam protective casing (2) is equipped with pans (3); the bottom of pans (3) is fixed with crystallizer submersed nozzle (4); the output mouth of a river of crystallizer submersed nozzle (4) extends in the crystallizer (5); the lower end of crystallizer (5) is equipped with strand apparatus for deivation (8); strand draw-gear (10) places strand apparatus for deivation (8) inside, and crystallizer (5) top also is equipped with mother metal and sends guidance system (13) to.
2. the device of a kind of large section steel billet of casting according to claim 1 is characterized in that: described mother metal is sent guidance system (13) to and is comprised feed mechanism and guiding mechanism, and feed mechanism is made of electronic winding plant; Guiding mechanism is made of the guide roller of horizontal both direction.
3. the device of a kind of large section steel billet of casting according to claim 1, it is characterized in that: the top of described strand draw-gear (10) is connected with dummy ingot mechanism (7), and the position of the corresponding crystallizer of dummy ingot mechanism (7) (5) lower ending opening is provided with dummy bar head (14).
4. the device of a kind of large section steel billet of casting according to claim 1, it is characterized in that: the bottom of described pans (3) is fixed with 2-4 and props up crystallizer submersed nozzle (4), and the output mouth of a river that 2-4 props up crystallizer submersed nozzle (4) all extends in the crystallizer (5).
5. the device of a kind of large section steel billet of casting according to claim 1, it is characterized in that: the shape of described crystallizer (5) is a rectangle or cylindrical, the sidewall of crystallizer (5) is a copper coin, and copper coin is fixed with primary cooling system outward, and primary cooling system is a cover water cooling body.
6. the device of a kind of large section steel billet of casting according to claim 1, it is characterized in that: the outer upper of described strand apparatus for deivation (8) is fixed with mould vibration device (6), other position, the outside of strand apparatus for deivation (8) is fixed with strand secondary cooling system (9), strand apparatus for deivation (8) and the interlaced arrangement of strand secondary cooling system (9).
7. the device of a kind of large section steel billet of casting according to claim 6 is characterized in that: described strand secondary cooling system (9) comprises the water supply unit and sprays cooling unit.
8. the device of a kind of large section steel billet of casting according to claim 6 is characterized in that: be equipped with locomotive (11) under the described strand secondary cooling system (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205510741U CN201807710U (en) | 2010-10-08 | 2010-10-08 | Device for casting oversized fracture surface steel billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205510741U CN201807710U (en) | 2010-10-08 | 2010-10-08 | Device for casting oversized fracture surface steel billets |
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| Publication Number | Publication Date |
|---|---|
| CN201807710U true CN201807710U (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205510741U Expired - Fee Related CN201807710U (en) | 2010-10-08 | 2010-10-08 | Device for casting oversized fracture surface steel billets |
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| CN (1) | CN201807710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941061A (en) * | 2010-10-08 | 2011-01-12 | 阎瑞河 | Method and device for casting extra large-section billet |
-
2010
- 2010-10-08 CN CN2010205510741U patent/CN201807710U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941061A (en) * | 2010-10-08 | 2011-01-12 | 阎瑞河 | Method and device for casting extra large-section billet |
| CN101941061B (en) * | 2010-10-08 | 2012-05-30 | 阎瑞河 | Method and device for casting extra large-section billet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110427 Termination date: 20141008 |
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| EXPY | Termination of patent right or utility model |