CN105665689A - Steel ladle capable of preventing steel slag from entering casting mold during pouring - Google Patents
Steel ladle capable of preventing steel slag from entering casting mold during pouring Download PDFInfo
- Publication number
- CN105665689A CN105665689A CN201610240953.4A CN201610240953A CN105665689A CN 105665689 A CN105665689 A CN 105665689A CN 201610240953 A CN201610240953 A CN 201610240953A CN 105665689 A CN105665689 A CN 105665689A
- Authority
- CN
- China
- Prior art keywords
- ladle
- bag
- slide gate
- gate nozzle
- pit
- 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
Links
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
- B22D41/02—Linings
-
- 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
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
Abstract
A steel ladle capable of preventing steel slag from entering a casting mold during pouring comprises a ladle wall and a ladle bottom, wherein the ladle bottom comprises a housing, a permanent layer and a working layer from the outside in; the working layer of the ladle bottom comprises insulating bricks and pocket blocks; a sliding gate nozzle allowing molten steel to flow out is formed in each pocket block; the pocket blocks are lower than the insulating bricks of the ladle bottom, so that the pocket blocks around the sliding gate nozzles form concave pits relative to the insulating bricks, and accordingly, the distance between the liquid level of molten steel in the steel ladle and the sliding gate nozzles is increased. As the concave pits are formed at the bottom of the steel ladle, and the sliding gate nozzles are arranged on the concave pits, the distance between the molten steel and the sliding gate nozzles is increased by increasing the distance between the molten steel and the bottoms of the concave pits while the molten steel capacity of the steel ladle is almost not changed. The steel ladle provided by the invention is novel in design, simple in structure and good in practical effect.
Description
Technical field
The invention belongs to metal casting casting equipment technical field, particularly relate to a kind of prevent pour into a mould time slag enter casting mold ladle.
Background technology
During for prevention steel-casting cast, slag enters into casting mold affects casting quality, must leave the remaining steel of abundance, it is ensured that be poured rear slag and will not enter in casting mold during cast. Considering cost factor, ordinary circumstance, remaining steel weight all controls at about 5t.
But along with the development of science and technology, the testing requirement of casting quality is also more and more higher, reflect in foundry goods have slag successively. Find by analyzing, these slags are all poured into a mould the later stage and are rolled in casting mold by molten steel, slag is once be directly entered foundry goods body, casting quality impact is very big, the energy that follow-up needs cost a lot of money goes to excavate and repair welding defect, and the saving of production cost and the raising of production efficiency is very unfavorable.
Prior art also has the slag reducing molten steel by changing ladle bottom structure, such as application number is in the application for a patent for invention of 201410611773.3, a kind of ladle method for designing placing molten steel slag is disclosed, it is will be designed as half height at the bottom of the bag of ladle, half is low in step-like, the height when difference in height of step is equal to molten steel slag, ladle nozzle position is arranged on the side that Ladle Bottom horizontal plane is low, in this technical scheme, step-like by being designed as at the bottom of whole bag, although the distance at the molten steel distance mouth of a river can be increased, but the volume of this ladle is obviously reduced, the appearance molten steel amount of ladle also greatly reduces, when needing to hold same molten steel, the ladle needing bigger specification realizes, cause the wasting of resources, cost increases.
Summary of the invention
Be necessary propose a kind of more save cost, again can increase molten steel distance slide gate nozzle distance prevent pour into a mould time slag enter casting mold ladle.
A kind of prevent pour into a mould time slag enter casting mold ladle include at the bottom of containment wall and bag, described containment wall includes shell from outside to inside, permanent layer, heat-insulation layer, working lining four-layer structure, shell from outside to inside is included at the bottom of described bag, permanent layer, working lining three-decker, working lining at the bottom of described bag includes insulating brick and pocket block, described pocket block is offered the slide gate nozzle flowed out for the molten steel in ladle, the height of described pocket block is lower than the height of the insulating brick at the bottom of described bag, so that the pocket block around slide gate nozzle forms pit relative to insulating brick, and then the distance of the molten steel liquid level distance slide gate nozzle in increase ladle.
The present invention by forming a pit in the bottom of ladle, slide gate nozzle is arranged on this pit, and then the distance of molten steel distance slide gate nozzle is realized increasing by increasing the distance of the bottom of molten steel distance pit, and the appearance molten steel amount of ladle is also basically unchanged, novel in design, simple in construction, practical function is better.
Accompanying drawing explanation
When Fig. 1 is prevent from pouring into a mould, slag enters the structural representation at the bag end of the ladle of casting mold.
Fig. 2 is the vertical section structure schematic diagram at the bag end in Fig. 1.
Fig. 3 is the structural representation at the bag end of the commonly used ladle of steel mill.
Fig. 4 is the vertical section structure schematic diagram at the bag end in Fig. 3.
In figure: the bag end 1, insulating brick 11, pocket block 12, pit 13, slide gate nozzle 14.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme and implementation result thereof are described further.
Referring to Fig. 1, Fig. 2, above-mentioned when preventing from pouring into a mould slag enter the ladle of casting mold and include at the bottom of containment wall and bag 1, containment wall includes shell from outside to inside, permanent layer, heat-insulation layer, working lining four-layer structure, the bag end 1, includes shell from outside to inside, permanent layer, working lining three-decker, the working lining at the bag end 1 includes insulating brick 11 and pocket block 12, pocket block 12 is offered the slide gate nozzle 14 flowed out for the molten steel in ladle, the height of pocket block 12 is lower than the height of the insulating brick 11 at the bag end 1, so that the pocket block 12 around slide gate nozzle 14 forms pit 13 relative to insulating brick 11, and then the distance of the molten steel liquid level distance slide gate nozzle 14 in increase ladle.
The technical program is also reduce the slag of molten steel by changing bottom of steel ladle 1 structure.
Generally in casting process, along with the decline of cast later stage liquid steel level, molten steel produces to conflux whirlpool, promotes slag steel emulsifying, and slag flows to casting mold along with molten steel. In container drainage process, liquid is first vertical to decline, and when dropping to certain altitude, liquid just starts to collect to slide gate nozzle 14 center line, and forms whirlpool on slag blanket surface, and liquid level at this moment is called critical whirlpool height H. Along with molten steel face declines further, recessed whirlpool is more and more obvious, and swirl velocity is also increasing, until the through mouth of a river, liquid level at this moment is called through height, and now a large amount of bits come into the mouth of a river. Liquid level continues to decline, originally to going out the fluid particle that head piece centrage confluxes, owing to the effect of centrifugal force produces tangential velocity, its movement locus increasingly Off-Radial is made to develop into the rotational flow around centrage, finally develop into have strong swabbing action through go out head piece funnel-form whirlpool, cause whirlpool slag and under.
Bottom of steel ladle 1 structure that general steel mill adopts is as shown in Figure 3, Figure 4, including argon brick cup, porous plug, pocket block 12, slide gate nozzle 14, the resistance to material of bottom of steel ladle 1, wherein pocket block 12, argon brick cup are in same plane with the resistance to material of bottom of steel ladle 1, when molten steel is poured into later stage residue about 5t, molten steel face above slide gate nozzle 14 initially forms whirlpool, and increasingly severe, last slag is rolled in casting mold, has a strong impact on surface quality of continuous castings.
And the present invention is one pit 13 of design at the bottom of the bag of ladle 1, again slide gate nozzle 14 is opened on pit 13, and then increase the height at molten steel liquid level distance pit 13 and the mouth of a river, so, molten steel height in pit 13 is more than the molten steel height in ladle, it is compared to the bag end when being plane, the Yu Gangliang of 5t has reached critical whirlpool height H, such as 500mm, initially form whirlpool, start slag, if to prevent existing ladle from molten steel slag situation occurring, Yu Gangliang increased to 8t～9t, so virtually to add smelting cost.And in the design, part molten steel enters pit 13, due to the degree of depth of pit 13, make molten steel liquid level to the distance L of the bottom of pit 13 still above 500mm, namely more than critical whirlpool height H so that the molten steel at slide gate nozzle 14 place is not easily formed whirlpool, without forming slag.
Further, insulating brick 11 is cuboid, including length, pocket block 12 is cuboid, by vertically arranged for the insulating brick 11 at the bag end 1, insulating brick 11 horizontally set of pocket block 12, referring to Fig. 2, so that the height of the insulating brick 11 of pocket block 12 is lower than the height of the insulating brick 11 at the bag end 1, to form pit 13. The program is to form pit 13 by changing the layout of putting of the insulating brick 11 of at the bottom of former bag 1, not only strictly controls cost, and adopts such structure to build stove, and bottom of furnace body is tight, solid.
Further, the degree of depth of pit 13 is the 1/2～2/3 of the height of the insulating brick 11 at the bag end 1. The degree of depth of pit 13 is more deep, and the Yu Gangliang of equivalent still has higher molten steel height in pit 13, and molten steel height is still above the critical whirlpool height H within ladle so that the molten steel at slide gate nozzle 14 place is not easily formed eddy current, and it is also more late that slag forms the time.
Further, the relational expression of critical whirlpool height H and mouth of a river diameter d and position, mouth of a river ε is as follows:
H=65.2766+1.427d-76.778ε
Wherein, ε is the position of slide gate nozzle 14, is usually fixing, and when slide gate nozzle 14 is two, ε is the distance between two slide gate nozzles 14, and d is the diameter of slide gate nozzle 14.
So when remaining steel weight is constant, the distance reduced between the diameter of slide gate nozzle 14, two slide gate nozzles 14 of increase can reduce critical whirlpool height H, and then prevents slag situation from occurring.
According to above-mentioned formula, slide gate nozzle 14 is circular, and pit 13 is square, and the diameter of slide gate nozzle 14 is the 1/3～1 of the length of side of pocket block 12. Pocket block 12 is square, then pit 13 is also square. Wherein, the diameter of slide gate nozzle 14 is preferably the 1/2 of the length of side of pit 13. If slide gate nozzle 14 diameter is too little, the molten steel rate of outflow is slow, and rate of cooling is fast, and molten steel temperature declines very fast, and casting mold is unfavorable, if slide gate nozzle 14 diameter is too big, the heat waste of pocket block 12 is more serious, so most preferably being 1/2.
Further, the center of the position deviation pit 13 of slide gate nozzle 14. Namely slide gate nozzle 14 is not at the center of pocket block 12, due to the eddy centre that liquid is easily formed in center, so, relative to the center that slide gate nozzle 14 is arranged on pit 13, slide gate nozzle 14 avoids the center of pit 13 when arranging, and then reduces the risk that whirlpool is formed.
Further, according to produced on-site demand and above-mentioned formula, some ladles need to arrange two slide gate nozzles 14, pour into a mould to meet simultaneously, so arranging two pocket blocks 12 on the working lining at the bag end 1, to form two pits 13, two pits 13 offer slide gate nozzle 14 respectively, two pits 13 are arranged at the bottom of the identical semicircle bag at the bag end 1 on 1, and the distance between two pits 13 is not less than the radius at the bag end 1.
The present invention also proposes further improvement opportunity scheme, the such as bag end 1 is to tilt, incline direction is downward-sloping to arranging at the bottom of the semicircle bag of pocket block 12 1 by being not provided with at the bottom of the semicircle bag of pocket block 12 1, and then increases the distance of slide gate nozzle 14 in the molten steel liquid level distance pit 13 in ladle.
Further, also setting up slide mechanism at the bag end 1, slide mechanism coordinates with slide gate nozzle 14, so that slide gate nozzle 14 is opened or to be blocked.
Claims (9)
1. one kind prevent pour into a mould time slag enter casting mold ladle, it is characterized in that: include at the bottom of containment wall and bag, described containment wall includes shell from outside to inside, permanent layer, heat-insulation layer, working lining four-layer structure, shell from outside to inside is included at the bottom of described bag, permanent layer, working lining three-decker, working lining at the bottom of described bag includes insulating brick and pocket block, described pocket block is offered the slide gate nozzle flowed out for the molten steel in ladle, the height of described pocket block is lower than the height of the insulating brick at the bottom of described bag, so that the pocket block around slide gate nozzle forms pit relative to insulating brick, and then the distance of the molten steel liquid level distance slide gate nozzle in increase ladle.
2. when preventing from as claimed in claim 1 pouring into a mould, slag enters the ladle of casting mold, it is characterized in that: described insulating brick is cuboid, by vertically arranged for the insulating brick at the bag end, the insulating brick horizontally set of described pocket block, so that the height of the insulating brick of pocket block is lower than the height of the insulating brick at the bag end, to form pit.
3. when preventing from as claimed in claim 2 pouring into a mould, slag enters the ladle of casting mold, it is characterised in that: the degree of depth of described pit is the 1/2～2/3 of the height of the insulating brick at the bag end.
4. when preventing from as claimed in claim 2 pouring into a mould, slag enters the ladle of casting mold, it is characterised in that: described slide gate nozzle is circular, and described pit is square, and the diameter of slide gate nozzle is the 1/3～1 of the length of side of pocket block.
5. when preventing from as claimed in claim 4 pouring into a mould, slag enters the ladle of casting mold, it is characterised in that: the diameter of described slide gate nozzle is the 1/2 of the length of side of pit.
6. when preventing from as claimed in claim 5 pouring into a mould, slag enters the ladle of casting mold, it is characterised in that: the center of the position deviation pit of described slide gate nozzle.
7. when preventing from as claimed in claim 6 pouring into a mould, slag enters the ladle of casting mold, it is characterized in that: two described pocket blocks are set on the working lining at the bottom of described bag, to form two pits, two described pits offer described slide gate nozzle respectively, said two pit is arranged at the bottom of the identical semicircle bag wrapping the end, and the distance between said two pit is not less than the radius at the bottom of described bag.
8. when preventing from as claimed in claim 7 pouring into a mould, slag enters the ladle of casting mold, it is characterized in that: be tilt at the bottom of described bag, incline direction is downward-sloping to arranging at the bottom of the semicircle bag of pocket block by being not provided with at the bottom of the semicircle bag of pocket block, and then increases the distance of slide gate nozzle in the molten steel liquid level distance pit in ladle.
9. when preventing from as claimed in claim 8 pouring into a mould, slag enters the ladle of casting mold, it is characterised in that: also setting up slide mechanism at the bag end, described slide mechanism coordinates with slide gate nozzle, to be opened by slide gate nozzle or to block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240953.4A CN105665689A (en) | 2016-04-19 | 2016-04-19 | Steel ladle capable of preventing steel slag from entering casting mold during pouring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240953.4A CN105665689A (en) | 2016-04-19 | 2016-04-19 | Steel ladle capable of preventing steel slag from entering casting mold during pouring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105665689A true CN105665689A (en) | 2016-06-15 |
Family
ID=56309871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610240953.4A Pending CN105665689A (en) | 2016-04-19 | 2016-04-19 | Steel ladle capable of preventing steel slag from entering casting mold during pouring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105665689A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102748A (en) * | 2019-05-06 | 2019-08-09 | 共享铸钢有限公司 | A method of improving steel-casting casting quality |
| CN110614350A (en) * | 2019-10-11 | 2019-12-27 | 马鞍山钢铁股份有限公司 | Method for reducing casting residue of tundish of 2-machine 2-flow slab continuous casting machine |
| CN110961610A (en) * | 2019-12-23 | 2020-04-07 | 承德建龙特殊钢有限公司 | Steel ladle and construction method thereof |
| CN113042725A (en) * | 2021-03-11 | 2021-06-29 | 马鞍山钢铁股份有限公司 | Slag entrapment prevention dam blocking control method for ladle nozzle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02225369A (en) * | 1989-02-23 | 1990-09-07 | Kobe Steel Ltd | Highly corrosion resistant brick for ladle |
| CN201136050Y (en) * | 2007-12-29 | 2008-10-22 | 中冶东方工程技术有限公司上海分公司 | Ladle |
| CN101513669A (en) * | 2008-02-18 | 2009-08-26 | 北美耐火砖公司 | High Yield Ladle Bottoms |
| CN201807729U (en) * | 2010-09-26 | 2011-04-27 | 舞阳钢铁有限责任公司 | Continuous casting tundish for reducing steel remaining quantity |
| CN203197232U (en) * | 2013-04-28 | 2013-09-18 | 浙江自立股份有限公司 | Steel ladle bottom structure capable of effectively reducing amount of residual molten steel of steel ladle |
| CN205587643U (en) * | 2016-04-19 | 2016-09-21 | 共享铸钢有限公司 | Slag gets into ladle of casting mould when preventing to pour into a mould |
-
2016
- 2016-04-19 CN CN201610240953.4A patent/CN105665689A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02225369A (en) * | 1989-02-23 | 1990-09-07 | Kobe Steel Ltd | Highly corrosion resistant brick for ladle |
| CN201136050Y (en) * | 2007-12-29 | 2008-10-22 | 中冶东方工程技术有限公司上海分公司 | Ladle |
| CN101513669A (en) * | 2008-02-18 | 2009-08-26 | 北美耐火砖公司 | High Yield Ladle Bottoms |
| CN201807729U (en) * | 2010-09-26 | 2011-04-27 | 舞阳钢铁有限责任公司 | Continuous casting tundish for reducing steel remaining quantity |
| CN203197232U (en) * | 2013-04-28 | 2013-09-18 | 浙江自立股份有限公司 | Steel ladle bottom structure capable of effectively reducing amount of residual molten steel of steel ladle |
| CN205587643U (en) * | 2016-04-19 | 2016-09-21 | 共享铸钢有限公司 | Slag gets into ladle of casting mould when preventing to pour into a mould |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102748A (en) * | 2019-05-06 | 2019-08-09 | 共享铸钢有限公司 | A method of improving steel-casting casting quality |
| CN110614350A (en) * | 2019-10-11 | 2019-12-27 | 马鞍山钢铁股份有限公司 | Method for reducing casting residue of tundish of 2-machine 2-flow slab continuous casting machine |
| CN110961610A (en) * | 2019-12-23 | 2020-04-07 | 承德建龙特殊钢有限公司 | Steel ladle and construction method thereof |
| CN113042725A (en) * | 2021-03-11 | 2021-06-29 | 马鞍山钢铁股份有限公司 | Slag entrapment prevention dam blocking control method for ladle nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102626771B (en) | Water-cooling casting method and device of hollow pipe blank | |
| CN101274356B (en) | Dead-melted steel ingot | |
| CN206622605U (en) | A kind of three machines three stream slab CC tundish | |
| CN105665689A (en) | Steel ladle capable of preventing steel slag from entering casting mold during pouring | |
| CN103862000B (en) | A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique | |
| CN101293273A (en) | Process for manufacturing low-aliquation large-scale hollow steel ingot | |
| CN106978519A (en) | A kind of method that blowing argon gas prevent whirlpool slag in ladle tapping process | |
| CN102371345A (en) | Method for casting ductile iron casting of air-conditioning compressor | |
| CN101342586B (en) | Equipment and process for casting multi-branch steel ingot with vacuum spill method and liquid steel | |
| CN103962517B (en) | A kind of apparatus for pouring of die casting electrode bar and pouring procedure thereof | |
| CN107363252A (en) | The flow control device and method of Cleanliness of Molten Steel in a kind of raising casting process | |
| CN106270406A (en) | The cavity structure of wind power generating set rear box foundry goods and method | |
| CN104647570A (en) | Blast furnace front refractory casting mold and casting method | |
| CN205587643U (en) | Slag gets into ladle of casting mould when preventing to pour into a mould | |
| CN206974161U (en) | Combined zinc alloy production metallurgical furnace | |
| CN102274932A (en) | Two-ladle combined casting device and method for steel ingot | |
| CN208276173U (en) | Ladle pours remaining oxygen gas direct-recycling device | |
| CN201058370Y (en) | Low pressure casting rising liquid pipe | |
| CN110744008A (en) | Mold for casting millstone tile and process for casting millstone tile | |
| CN206799675U (en) | A kind of blow prevents the device of whirlpool slag phenomenon in ladle tapping process | |
| CN103170609A (en) | Ferroalloy casting modeling device and ferroalloy casting modeling process in front of furnace | |
| CN106834762B (en) | A kind of vacuum melting device of intermetallic Ni-Al compound | |
| CN202741684U (en) | Novel tangential brick for ingates in cast steel pouring system | |
| CN108637235A (en) | Ladle draining method | |
| CN104117662B (en) | The closed tundish of Ni-based ultrafine powder vacuum melting horizontal continuous casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20160615 |