CN205587643U - Slag gets into ladle of casting mould when preventing to pour into a mould - Google Patents
Slag gets into ladle of casting mould when preventing to pour into a mould Download PDFInfo
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- CN205587643U CN205587643U CN201620325537.XU CN201620325537U CN205587643U CN 205587643 U CN205587643 U CN 205587643U CN 201620325537 U CN201620325537 U CN 201620325537U CN 205587643 U CN205587643 U CN 205587643U
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Abstract
The utility model provides a slag gets into ladle of casting mould when preventing to pour into a mould includes at the bottom of bao bi and the package, the package end includes by outer extremely interior shell, permanent layer, operational layer three layer construction, the operational layer at the package end includes insulating brick and pocket block set up the slide gate nozzle who is used for the interior molten steel of ladle to flow on the pocket block, highly being less than of pocket block the height of the insulating brick at the package end to make the pocket block around the slide gate nozzle form the pit for the insulating brick, and then increase molten steel liquid level in the ladle apart from slide gate nozzle's distance, the utility model discloses a forming a pit in the bottom of ladle, setting up slide gate nozzle on this pit, and then realize increasing the molten steel apart from slide gate nozzle's distance through increasing the molten steel apart from the distance of the bottom of pit, the appearance molten steel volume of ladle is also unchangeable basically moreover, the modern design, and simple structure, the practical function is better.
Description
Technical field
This utility model belongs to metal casting casting equipment technical field, particularly relate to a kind of prevent cast time slag enter casting mold ladle.
Background technology
Enter into casting mold for slag during prevention steel-casting cast and affect casting quality, the remaining steel of abundance must be left during cast, it is ensured that be poured rear slag and will not enter in casting mold.In view of cost factor, ordinary circumstance, remaining steel weight all controls at about 5t.
But along with the development of science and technology, more and more higher to the testing requirement of casting quality, reflect in foundry goods have slag successively.Found by analysis, these slags are all poured into a mould the later stage and are rolled in casting mold by molten steel, slag is once directly entered foundry goods body, the biggest on casting quality impact, follow-up needs spends the biggest energy to go to excavate and repair welding defect, the most unfavorable to the saving of production cost and the raising of production efficiency.
Prior art also has the slag reducing molten steel by changing ladle bottom structure, such as in the application for a patent for invention of Application No. 201410611773.3, a kind of ladle method for designing placing molten steel slag is disclosed, it is high by being designed as half at the bottom of the bag of ladle, half is low in step-like, the difference in height of step is equal to height during 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 accommodate same molten steel, the ladle needing bigger specification realizes, cause the wasting of resources, cost increases.
Summary of the invention
It is necessary to propose a kind of slag when preventing cast more cost-effective, distance that molten steel distance slide gate nozzle can be increased again and enters the ladle of casting mold.
A kind of prevent cast 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 that the molten steel in ladle flows out, the height of described pocket block is less 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.
Preferably, described insulating brick is cuboid, and 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 less than the height of the insulating brick at the bag end, to form pit.
Preferably, the degree of depth of described pit be bag the end insulating brick height 1/2～2/3.
Preferably, described slide gate nozzle is circular, and described pit is square, the 1/3～1 of the length of side of a diameter of pocket block of slide gate nozzle.
Preferably, the 1/2 of the length of side of a diameter of pit of described slide gate nozzle.
Preferably, the center of the position deviation pit of described slide gate nozzle.
Preferably, working lining at the bottom of described bag arranges two described pocket blocks, 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.
Preferably, being to tilt at the bottom of described bag, incline direction is by being not provided with to arranging the semicircle bag slanted floor of pocket block 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.
Preferably, 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.
This utility model by forming a pit in the bottom of ladle, slide gate nozzle is arranged on this pit, and then realize increasing the distance of molten steel distance slide gate nozzle by the distance increasing 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 preferable.
Accompanying drawing explanation
When Fig. 1 is to prevent cast, 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, the technical solution of the utility model and implementation result thereof are described further.
See Fig. 1, Fig. 2, above-mentioned when preventing cast 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 that the molten steel in ladle flows out, the height of pocket block 12 is less 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 to 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 the whirlpool that confluxes, and promotes slag steel emulsifying, and slag flows to casting mold along with molten steel.During container drainage, liquid is the most vertical to be declined, 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 referred to as critical whirlpool height H.Along with molten steel face declines further, recessed whirlpool is more and more obvious, and swirl velocity is the most increasing, until the through mouth of a river, liquid level at this moment is referred to as 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 universal steel mill uses 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 this utility model 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 molten steel liquid level distance pit 13 and the height at 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 wrap the 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, the most 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 distance L of the bottom of pit 13 still above 500mm, i.e. more than critical whirlpool height H so that the molten steel at slide gate nozzle 14 is not easily formed whirlpool, will not form slag yet.
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, see Fig. 2, so that the height of the insulating brick 11 of pocket block 12 is less 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 the layout of putting of the insulating brick 11 of 1 at the bottom of the former bag of change, the most strictly controls cost, and uses such structure to build stove, and bottom of furnace body is tight, solid.
Further, the degree of depth of pit 13 be bag the end 1 insulating brick 11 height 1/2～2/3.The degree of depth of pit 13 is the deepest, 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 is not easily formed eddy current, and it is the most late that slag forms the time.
Further, critical whirlpool height H is as follows with the relational expression of mouth of a river diameter d and position, mouth of a river ε:
H=65.2766+1.427d-76.778ε
Wherein, ε is the position of slide gate nozzle 14, the most fixing, 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 in the case of 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, the 1/3～1 of the length of side of a diameter of pocket block 12 of slide gate nozzle 14.Pocket block 12 is square, then pit 13 is also square.Wherein, the diameter of slide gate nozzle 14 be preferably pit 13 the length of side 1/2.If slide gate nozzle 14 diameter is the least, the molten steel rate of outflow is slow, and rate of cooling is fast, and molten steel temperature declines very fast, unfavorable to casting mold, if slide gate nozzle 14 diameter is too big, the heat waste of pocket block 12 is more serious, so most preferably 1/2.
Further, the center of the position deviation pit 13 of slide gate nozzle 14.I.e. slide gate nozzle 14 is not positioned at the center of pocket block 12, the eddy centre easily formed in center due to liquid, 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.
This utility model also proposes further to improve technical scheme, the such as bag end 1 is to tilt, incline direction is downward-sloping at the bottom of the semicircle bag arranging 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 cast 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 that the molten steel in ladle flows out, the height of described pocket block is less 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.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 1, 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 less than the height of the insulating brick at the bag end, to form pit.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 2, 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.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 2, it is characterised in that: described slide gate nozzle is circular, and described pit is square, the 1/3～1 of the length of side of a diameter of pocket block of slide gate nozzle.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 4, it is characterised in that: the 1/2 of the length of side of a diameter of pit of described slide gate nozzle.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 5, it is characterised in that: the center of the position deviation pit of described slide gate nozzle.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 6, 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.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 7, it is characterized in that: be to tilt at the bottom of described bag, incline direction is by being not provided with at the bottom of the semicircle bag of pocket block to downward-sloping at the bottom of the semicircle bag arranging pocket block, and then increases the distance of slide gate nozzle in the molten steel liquid level distance pit in ladle.
Prevent the ladle of slag entrance casting mold during cast the most as claimed in claim 8, 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 |
|---|---|---|---|
| CN201620325537.XU CN205587643U (en) | 2016-04-19 | 2016-04-19 | Slag gets into ladle of casting mould when preventing to pour into a mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325537.XU CN205587643U (en) | 2016-04-19 | 2016-04-19 | Slag gets into ladle of casting mould when preventing to pour into a mould |
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| CN205587643U true CN205587643U (en) | 2016-09-21 |
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| CN201620325537.XU Active CN205587643U (en) | 2016-04-19 | 2016-04-19 | Slag gets into ladle of casting mould when preventing to pour into a mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665689A (en) * | 2016-04-19 | 2016-06-15 | 共享铸钢有限公司 | Steel ladle capable of preventing steel slag from entering casting mold during pouring |
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2016
- 2016-04-19 CN CN201620325537.XU patent/CN205587643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105665689A (en) * | 2016-04-19 | 2016-06-15 | 共享铸钢有限公司 | Steel ladle capable of preventing steel slag from entering casting mold during pouring |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |