CN106513655A - Manufacturing method for ladle filler sand and filling method for filling land filler sand into steel ladle - Google Patents
Manufacturing method for ladle filler sand and filling method for filling land filler sand into steel ladle Download PDFInfo
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- CN106513655A CN106513655A CN201610976979.5A CN201610976979A CN106513655A CN 106513655 A CN106513655 A CN 106513655A CN 201610976979 A CN201610976979 A CN 201610976979A CN 106513655 A CN106513655 A CN 106513655A
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- sand
- stuffing sand
- stuffing
- hole
- mixture
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- 239000004576 sand Substances 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000011049 filling Methods 0.000 title claims abstract description 16
- 239000000945 filler Substances 0.000 title abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 35
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 15
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 192
- 238000011068 loading method Methods 0.000 claims description 24
- 239000006004 Quartz sand Substances 0.000 claims description 23
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 6
- 229910052804 chromium Inorganic materials 0.000 abstract description 5
- 239000011651 chromium Substances 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract description 3
- 238000005266 casting Methods 0.000 description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 239000011449 brick Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 5
- 238000009847 ladle furnace Methods 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/482—Refractories from grain sized mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention provides a manufacturing method for ladle filler sand and a filling method for filling land filler sand into a steel ladle, wherein the manufacturing method for the land filler sand comprises the following steps: step S10: mixing and stirring zircon sand, chromium ore sand and quart sand to form a mixture; step S20: roasting the mixture; and step S40: cooling the mixture. By applying the technical scheme adopted by the invention, the problem that an automatic pouring rate for the steel ladle in the prior art in the prior art is low can be effectively solved.
Description
Technical field
The present invention relates to casting field, manufacture method in particular to a kind of stuffing sand and loading in ladle is drawn
The loading method of quicksand.
Background technology
At present, high-end railway freight-car Steel Castings are typically smelted using eccentric-bottom electric arc furnaces+LF ladle refining furnaces.Due to
Below 1 ton, the cast of slide gate nozzle formula can not meet the technological requirement of many case cast to foundry goods majority, can only adopt rod type at present
Cast, just can guarantee that cast gate on-off times at 80-100 time.Rod type cast technological process be：Ladle furnace stopper rod cold charge, fill out
Dress stuffing sand → stopper rod hangs out furnace molten steel at the beginning of baking, ladle furnace are toasted → connect → LF refining → line feeding → stopper rod hot charging → open and pour
Drainage.Wherein load stuffing sand, open the key for pouring that drainage is that realization is smoothly poured into a mould.And the quality and filling technique of stuffing sand are into
Work(drainage, the core smoothly poured into a mould.Traditional ladle draining sand is based on slide gate nozzle cast exploitation and applies, Technical comparing
Maturation, but be applied to steel-casting rod type cast ladle have following shortcoming.Firstth, the ladle of steel-casting rod type cast
Less, the static pressure of the molten steel in ladle is little, so as to the active force to stuffing sand sinter layer is little, causes automatic casting ratio relatively low.
Secondth, refining time is long, and temperature is high, causes drainage sinter layer thicker, is also unfavorable for automatic casting.
At present, the stuffing sand applied in prior art generally comprises following several：
The first, siliceous stuffing sand, siliceous stuffing sand is mainly by sea sand or the mixing of quartz sand, potassium feldspar and additive
Made by drying.But this quartziferous stuffing sand can undergo phase transition at 1200 DEG C and cause larger volumetric expansion, cause back-up sand
Increase with mouth of a river inwall adhesive force, have a strong impact on the mobility of stuffing sand, be unfavorable for the free-falling of stuffing sand.In addition, artificial
Quartz sand surface corner angle after processing are more, irregular, cause stuffing sand poor fluidity, easily cause " taut material " easily affect ladle from
Dynamic opening is poured.
Secondth, magnesia stuffing sand, magnesia stuffing sand mainly with forsterite and magnesia as main material, add quartz sand and
Chrome ore control sintering.But, the refractoriness of magnesia stuffing sand is relatively low, is 1650-1710 DEG C, relatively low from flow rate, generally 75-
95%.
The third, chromium matter stuffing sand, chromium matter stuffing sand mainly with chromite sand, quartz sand as primary raw material, add carbonaceous
Bonding agent mixing post-drying is made.But, the refractoriness of chromium matter stuffing sand is low, is 1730-1750 DEG C, relatively low from flow rate, and one
As be 85-99%.Not only price is higher, also pollutes environment.
Several stuffing sands are respectively provided with from the low problem of flow rate above, are unfavorable for automatic casting.
The content of the invention
Present invention is primarily targeted at providing a kind of manufacture method of stuffing sand and filling out for stuffing sand being loaded in ladle
Dress method is low with the automatic casting ratio for solving the problems, such as ladle of the prior art.
To achieve these goals, according to an aspect of the invention, there is provided a kind of manufacture method of stuffing sand, manufacture
Method is comprised the following steps：Step S10：Zircon sand, chrome ore and quartz sand is made to be mixed and stirred for forming mixture；Step
S20：Baking mixture；Step S40：Cool down mixture.
Further, the percentage by weight of zircon sand is 30%-50%, and the percentage by weight of chrome ore is 10%-20%,
The percentage by weight of quartz sand is 10%-26%.
Further, mixture also includes iron oxide, and the percentage by weight of iron oxide is 10%-25%.
Further, mixture also includes：Powdered graphite, the percentage by weight of powdered graphite is 2%-6%.
Further, the granularity of mixture is between 0.05-2mm.
Further, between step S20 and step S40, manufacture method is comprised the following steps：Step S30：Inspection mixing
The moisture of thing, execution step S40 if when moisture is less than 0.4%, if moisture is more than or equal to 0.4%
Then repeat step S20.
Further, after the step s 40, manufacture method is comprised the following steps：Step S50：Protection against the tide is carried out to mixture
Process.
According to a further aspect in the invention, there is provided a kind of loading method for loading stuffing sand in ladle, ladle
Bottom be provided with through hole, the molten steel in ladle can be flowed out by through hole, and loading method includes：Step S100：Closure through hole
Bottom；Step S400：First stuffing sand is inserted to through hole, the first stuffing sand is above-mentioned stuffing sand.
Further, the interior of ladle is provided with stopper rod, and stopper rod is attached to the top of through hole, the first stuffing sand after filling
The edge of upper surface is less than the position that the chock plug of stopper rod is contacted with the hole wall of through hole.
Further, before step S400, loading method includes：Step S300：Second stuffing sand is inserted in through hole.
Further, 1/2-3/4 of the height that the second stuffing sand is inserted for through hole length.
Further, before step S300, loading method includes：Step S200：Toast the first stuffing sand and second
Stuffing sand.
Using technical scheme, stuffing sand is mixed by zircon sand, chrome ore and quartz sand.Due to drainage
Contain zircon sand in sand, therefore improve the refractoriness of stuffing sand.And the enhancing of refractoriness cause the anti-molten steel of stuffing sand (high temperature
Molten steel) corrode penetrating power reinforcement, it is to avoid and high-temperature molten steel is oozed out from stuffing sand, improves safety and stability.In addition,
Also contain chrome ore and quartz sand in stuffing sand.As chrome ore and quartz sand have the incipient sintering temperature for reducing stuffing sand
The effect of degree, therefore the good fluidity with chrome ore and the stuffing sand of quartz sand, will not occur excess agglomeration, thinning sintering
Layer.After stirring zircon sand, chrome ore and quartz sand form mixture said mixture is toasted to remove mixing
Moisture in thing, it is ensured that job safety.After baking is finished, its cooling is waited.Made by the technical scheme of application invention
The stuffing sand for going out has raising refractoriness, and thinning sinter layer improves the advantage from flow rate of stuffing sand.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
The flow chart that Fig. 1 shows the embodiment of the manufacture method of stuffing sand of the invention；
Fig. 2 shows the flow process for the embodiment of the loading method of filling stuffing sand in ladle of the invention
Figure；And
Fig. 3 shows the vertical profile structural representation of the embodiment of ladle of the invention.
Wherein, above-mentioned accompanying drawing includes that the following drawings is marked：
1st, ladle；2nd, containment wall；3rd, brick cup；4th, sprue brick；5th, bottom plug；10th, the first stuffing sand；20th, the second stuffing sand；30、
Stopper rod.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, which indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that the description and claims of this application and the term " first " in above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Term can exchange in the appropriate case, so that presently filed embodiment described herein for example can be with except here
Order beyond those of diagram or description is implemented.
Additionally, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive to be included, example
Such as, process, method, system, product or the equipment for containing series of steps or unit is not necessarily limited to those clearly listed
Step or unit, but may include it is clearly not listing or intrinsic for these processes, method, product or equipment other
Step or unit.
For the ease of description, space relative terms can be used here, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.
For example, if the device in accompanying drawing is squeezed, it is described as " above other devices or construction " or " in other devices
On part or construction " device after will be positioned as " below other devices or construction " or " in other devices or construct it
Under ".Thus, exemplary term " in ... top " can include " in ... top " and " in ... lower section " two kinds of orientation.Should
Device can also other different modes positioning (being rotated by 90 ° or in other orientation), it is and relative to space used herein above
Respective explanations are made in description.
As shown in figure 1, the manufacture method of the stuffing sand of the present embodiment is comprised the following steps：Step S10：Make zircon sand, chromium
Ore in sand form and quartz sand are mixed and stirred for forming mixture；Step S20：Baking mixture；Step S40：Cool down mixture.
Using the technical scheme of the present embodiment, stuffing sand is mixed by zircon sand, chrome ore and quartz sand.Due to drawing
Contain zircon sand in quicksand, therefore improve the refractoriness of stuffing sand and (refer to the temperature that specific softening degree is issued in high temperature action
Degree, characterizes the performance that material resists high temperature action).And the enhancing of refractoriness causes the anti-molten steel of stuffing sand (molten steel of high temperature) to corrode
Penetrating power is strengthened, it is to avoid high-temperature molten steel is oozed out from stuffing sand, improves safety and stability.In addition, in stuffing sand
Also contain chrome ore and quartz sand.As chrome ore and quartz sand have the work of the point of incipient sintering for reducing stuffing sand
With, therefore the good fluidity with chrome ore and the stuffing sand of quartz sand, excess agglomeration, thinning sinter layer will not occur.
Stirring zircon sand, chrome ore and quartz sand are toasted to remove in mixture to said mixture after forming mixture
Moisture, it is ensured that job safety.After baking is finished, its cooling is waited.Produced by the technical scheme of Application Example
Stuffing sand has raising refractoriness, and thinning sinter layer improves advantage of the stuffing sand from flow rate, so as to improve automatic casting ratio,
Solve the problems, such as that the automatic casting ratio of ladle of the prior art is low.
Preferably, in the present embodiment, the mixture that zircon sand, chrome ore and quartz sand are mixed is put into into cylinder
Toasted in baker.Mixture is constantly rolled baking by cylinder baker, mixture is further stirred,
So that mixing is better, on the other hand so that the moisture in mixture is easier to be removed.It is further preferred that stuffing sand
Need to toast 3 hours with 400-500 DEG C of temperature in cylinder baker, it is ensured that stuffing sand is by roasting saturating.
It should be noted that the casting of the present embodiment is high with the refractoriness of the stuffing sand of LF ladles, 1780- can be reached
1830 DEG C, ladle draining sand reaches 99.5% from flow rate.
In the present embodiment, the percentage by weight of zircon sand is 30%-50%, and the percentage by weight of quartz sand is 10%-
20%, the percentage by weight of quartz sand is 10%-26%.The weight proportion of rational zircon sand, chrome ore and quartz sand makes
Obtain its respective advantage to bring into play to the full extent.It is therefore, it is possible to further improve the refractoriness of stuffing sand, thinning
Sinter layer, improve stuffing sand from flow rate.
In the present embodiment, mixture also includes iron oxide, and the percentage by weight of iron oxide is 10%-25%.Iron oxide
Addition advantageously in sintering.
In the present embodiment, mixture also includes：Powdered graphite, the percentage by weight of powdered graphite is 2%-6%.Due to
The heat endurance of graphite is high, and the coefficient of expansion is little, and molten steel wellability is good, therefore can prevent molten steel to the infiltration in stuffing sand.
In addition, powdered graphite is also used as lubricant, the frictional force between stuffing sand particle is reduced, improve mobility, and then improve
Stuffing sand from flow rate.
In the present embodiment, the granularity of mixture is between 0.05-2mm.Said structure is caused between stuffing sand particle
Frictional force is further reduced, so as to improve mobility, further increase stuffing sand from flow rate.
As shown in figure 1, in the present embodiment, between step S20 and step S40, manufacture method is comprised the following steps：Step
Rapid S30：The moisture of test mixture, execution step S40 if when moisture is less than 0.4%, if moisture
Then repeat step S20 during more than or equal to 0.4%.As the temperature of molten steel is very high, in stuffing sand, moisture is heated and can be changed into vapor,
And volume acutely will expand after water is changed into vapor, when the moisture in stuffing sand is more than predetermined value, then be likely to
Generation is exploded, it is therefore desirable to the moisture of test mixture before cooling.Need to dry when moisture is not up to standard again
Bake till moisture is up to standard.Therefore above-mentioned steps improve the security using stuffing sand.
In order to ensure that the moisture in stuffing sand is within a predetermined range, it is ensured that using stuffing sand before stuffing sand is loaded
Security, as shown in figure 1, in the present embodiment, after the step s 40, manufacture method is comprised the following steps：Step S50：To mixed
Compound carries out damp-proof treatment.Within this period before the filling that completes, the stuffing sand after damp-proof treatment is in which
The moisture in portion is still ensured that within a predetermined range, so as to further increasing security.Preferably, in the present embodiment
In, after stuffing sand is cooled down in stove, which to be packed, the included film of packaging bag is carrying out damp-proof treatment.It is further preferred that
Every bag of stuffing sand is 5kg.
Present invention also provides a kind of loading method for loading stuffing sand in ladle, according to the filling side of the application
The embodiment of method, the bottom of ladle 1 are provided with through hole, and the molten steel in ladle 1 can be flowed out by through hole, as shown in Fig. 2 loading
Method includes：Step S100：The bottom of closure through hole；Step S400：First stuffing sand 10 is inserted to through hole, the first drainage
Sand 10 is above-mentioned stuffing sand.Refractoriness is improved as above-mentioned stuffing sand has, thinning sinter layer improves the gravity flow of stuffing sand
Rate, the high advantage of automatic casting ratio, therefore the ladle using the stuffing sand also has above-mentioned advantage.
Specifically, as shown in figure 3, in the present embodiment, the bottom of ladle 1 has containment wall 2, and avoidance is provided with containment wall 2
Mouthful.Ladle 1 is internally provided with brick cup 3, has installing hole on brick cup 3.Above-mentioned installing hole is corresponding with the avoidance mouth in containment wall 2 to be set
Put.The inside of ladle 1 is additionally provided with sprue brick 4, and sprue brick 4 has through hole.Sprue brick 4 is located in avoidance mouth and the installing hole
It is interior.Stuffing sand needs to be seated in above-mentioned through hole.Before filling stuffing sand, needs first block bottom plug 5 in the bottom of through hole,
Would not flow out from the bottom of through hole so when stuffing sand is filled in through hole.Bottom plug inserts stuffing sand after installing,
Complete the filling of stuffing sand.Sinter layer can be produced when molten steel is contacted with the stuffing sand on top, through hole is sintered layer and bottom plug 5
Closure is so that molten steel cannot be flowed out from through hole completely.When needing to be poured into a mould, by plant equipment by bottom plug 5 from via bottoms
Extract.After extracting bottom plug 5, cold air is entered in through hole and is contacted with the sinter layer of stuffing sand.The sinter layer of stuffing sand is in cold air
Flow out to reach the purpose of stuffing sand gravity flow with rapid rupture in the presence of the static pressure of molten steel and from through hole.Need explanation
That in the present embodiment, the stuffing sand for loading through hole includes the first stuffing sand, the first stuffing sand be filled to the top of through hole and with
Molten steel is contacted.As the first stuffing sand has the advantages that sinter layer is thin, good fluidity, therefore the first stuffing sand is easier from through hole
Middle outflow, so as to improve stuffing sand from flow rate.
It should be noted that the technological process of rod type cast is：Ladle furnace stopper rod cold charge, filling stuffing sand → stopper rod hang
Go out baking, ladle furnace and toast → connect just furnace molten steel → LF refining → line feeding → stopper rod hot charging → open and pour drainage.Carrying out molten steel
The step for carrying out hot-charging plug rod, stopper rod 30 is needed to be attached to the top of through hole after refining.When multiple workpiece are poured into a mould, need
Opened by stopper rod and block through hole to complete.Specifically, after stuffing sand is all flowed out from through hole, drive division drives stopper rod
30 move down until blocking the top of through hole.As through hole is blocked by stopper rod 30, the molten steel in ladle will be unable to flow out.When
When needing to pour into a mould workpiece, drive division drives stopper rod 30 to move up, and the chock plug of stopper rod 30 avoids the open top of through hole, molten steel from
The open top of through hole flows into through hole, and the final bottom from through hole is flowed out and poured into a mould.After being poured, drive division stopper rod
30 move down, and block the through hole of stopper rod 30.Such repetitive cycling said process, you can cast out multiple steel-castings.
It should be noted that, although the first stuffing sand can produce sinter layer when contacting with molten steel, after bottom plug 5 is pulled out,
First stuffing sand can be flowed out in the presence of molten steel static pressure and cold air from through hole.But, still might have few portion
The sinter for dividing is remained on the hole wall of through hole.If when stopper rod 30 were moved downward to the position of closure through hole, chock plug contact
To if the hole wall containing residual sinter, it is possible to chock plug and through hole closure imprecision (sealing is poor) can be caused, cause steel
Liquid is flowed out from through hole, causes security incident.In order to avoid above-mentioned situation occurs, in the present embodiment, first after filling is drawn
The edge of the upper surface of quicksand is less than the position that the chock plug of stopper rod is contacted with the hole wall of through hole.So enable chock plug all the time with
Smooth through hole hole wall contact (not contacting with the sintering residue on hole wall), it is ensured that stopper rod blocks the sealing of through hole, keeps away
Exempt from security incident generation.Preferably, the edge of the upper surface of the first stuffing sand after filling to be less than the chock plug and through hole of stopper rod
Hole wall contact position 1-2mm.
As shown in Fig. 2 in the present embodiment, before step S400, loading method includes：Step S300：Second is drawn
Quicksand is inserted in through hole.Specifically, above-mentioned stuffing sand includes the first stuffing sand and the second stuffing sand.Wherein, through hole bottom loads
Second stuffing sand (tapping hole filler or common quartz sand that just furnace is used), the top of through hole load the first stuffing sand.Lower floor
Material is not contacted with high-temperature molten steel, and only the first stuffing sand of top is played a supporting role, and using the relatively low common material of price, is reduced
The consumption of the first stuffing sand 10, so as to reduce production cost.Certainly, it will be appreciated by those skilled in the art that through hole bottom
Load the second stuffing sand can also be good fluidity, drying, cheap other materials, but the refractoriness of the material
Need to meet use requirement.
As shown in Figure 3, it is preferable that in the present embodiment, 1/2-3/ of the height that the second stuffing sand is inserted for through hole length
4.Preferably, in the present embodiment, the height that the second stuffing sand is inserted for through hole length 2/3, the height that the first stuffing sand is inserted
Spend 1/3 for through hole length.
As shown in Fig. 2 in the present embodiment, before step S300, loading method includes：Step S200：Baking first
Stuffing sand and the second stuffing sand.Before the first stuffing sand 10 and the second stuffing sand 20 is loaded needed to carry out secondary baking to which
It is roasting, so as to the moisture for ensureing stuffing sand is up to standard.Therefore above-mentioned steps further increase the security using stuffing sand.It is excellent
Selection of land, in the present embodiment, the first stuffing sand and the second stuffing sand will be toasted 2 hours at a temperature of 200 DEG C.Above-mentioned technique
Condition so that the moisture in the first stuffing sand and the second stuffing sand fully can be dried.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of manufacture method of stuffing sand, it is characterised in that the manufacture method is comprised the following steps：
Step S10：Zircon sand, chrome ore and quartz sand is made to be mixed and stirred for forming mixture；
Step S20：Toast the mixture；
Step S40：Make the mixture cooling.
2. the manufacture method of stuffing sand according to claim 1, it is characterised in that the percentage by weight of the zircon sand is
30%-50%, the percentage by weight of the chrome ore is 10%-20%, and the percentage by weight of the quartz sand is 10%-
26%.
3. the manufacture method of stuffing sand according to claim 1, it is characterised in that the mixture also includes iron oxide,
The percentage by weight of the iron oxide is 10%-25%.
4. the manufacture method of stuffing sand according to claim 1, it is characterised in that the mixture also includes：Powdery stone
Ink, the percentage by weight of the powdered graphite is 2%-6%.
5. the manufacture method of stuffing sand according to claim 1, it is characterised in that the granularity of the mixture is in 0.05-
Between 2mm.
6. the manufacture method of stuffing sand according to claim 1, it is characterised in that in step S20 and the step
Between S40, the manufacture method is comprised the following steps：
Step S30：The moisture of the mixture is checked, the execution step if when the moisture is less than 0.4%
S40, repeating said steps S20 if when the moisture is more than or equal to 0.4%.
7. the manufacture method of stuffing sand according to claim 6, it is characterised in that after step S40, the system
The method of making is comprised the following steps：
Step S50：Damp-proof treatment is carried out to the mixture.
8. it is a kind of in ladle load stuffing sand loading method, the bottom of the ladle (1) is provided with through hole, the steel
Molten steel in bag (1) can be flowed out by the through hole, it is characterised in that the loading method includes：
Step S100：Block the bottom of the through hole；
Step S400：First stuffing sand (10) is inserted to the through hole, first stuffing sand (10) for claim 1 to
Stuffing sand any one of 7.
9. it is according to claim 8 load stuffing sand loading method, it is characterised in that the interior setting of the ladle (1)
There is stopper rod (30), the stopper rod (30) is attached to the top of the through hole, the upper table of first stuffing sand (10) after filling
The edge in face is less than the position that the chock plug of the stopper rod (30) is contacted with the hole wall of the through hole.
10. it is according to claim 8 load stuffing sand loading method, it is characterised in that before step S400,
The loading method includes：
Step S300：Second stuffing sand (20) is inserted in the through hole.
11. loading methods for loading stuffing sand according to claim 10, it is characterised in that second stuffing sand (20)
The height inserted is the 1/2-3/4 of the through hole length.
12. it is according to claim 10 load stuffing sands loading methods, it is characterised in that step S300 it
Before, the loading method includes：
Step S200：Toast first stuffing sand (10) and second stuffing sand (20).
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| CN201610976979.5A CN106513655A (en) | 2016-11-07 | 2016-11-07 | Manufacturing method for ladle filler sand and filling method for filling land filler sand into steel ladle |
| CN201810155720.3A CN108405845A (en) | 2016-11-07 | 2016-11-07 | The loading method of stuffing sand is loaded into ladle |
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| CN201610976979.5A CN106513655A (en) | 2016-11-07 | 2016-11-07 | Manufacturing method for ladle filler sand and filling method for filling land filler sand into steel ladle |
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| CN201810155720.3A Pending CN108405845A (en) | 2016-11-07 | 2016-11-07 | The loading method of stuffing sand is loaded into ladle |
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| CN109202055A (en) * | 2018-11-27 | 2019-01-15 | 河南通宇冶材集团有限公司 | A kind of excellent special steel drainage agent and preparation method thereof |
| CN109249013A (en) * | 2018-09-11 | 2019-01-22 | 浙江自立高温科技有限公司 | A kind of stuffing sand interstitital texture and plus sand technique for refining ladle |
| CN109405415A (en) * | 2018-12-03 | 2019-03-01 | 钢城集团凉山瑞海实业有限公司 | Steel ladle drainage agent apparatus for baking |
| CN111253156A (en) * | 2020-01-20 | 2020-06-09 | 武汉重远炉窑工程技术服务有限公司 | Zirconium-aluminum amorphous pouring hot-patch refractory material |
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Application publication date: 20170322 |