CN108746574A - A kind of ladle baking method - Google Patents
A kind of ladle baking method Download PDFInfo
- Publication number
- CN108746574A CN108746574A CN201810828953.5A CN201810828953A CN108746574A CN 108746574 A CN108746574 A CN 108746574A CN 201810828953 A CN201810828953 A CN 201810828953A CN 108746574 A CN108746574 A CN 108746574A
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- China
- Prior art keywords
- ladle
- heat
- roasting
- temperature
- driving
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000005266 casting Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 66
- 238000012856 packing Methods 0.000 claims description 28
- 239000011810 insulating material Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011044 quartzite Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 150000004645 aluminates Chemical class 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 235000013312 flour Nutrition 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000007596 consolidation process Methods 0.000 description 10
- 239000004615 ingredient Substances 0.000 description 7
- 238000004321 preservation Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007605 air drying Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 125000005624 silicic acid group Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000002791 soaking Methods 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
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
-
- 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
-
- 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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- 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
- C04B2235/02—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
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Products (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of ladle baking methods, belong to casting field, its key points of the technical solution are that including（1）The roasting Bao Jing of setting,（2）Just heating,（3）Reheat,（4）Eventually heating and（5）It completes.The present invention solves the technical issues of refractory life reduces during ladle baking under the prior art, has achieved the effect that the service life that can extend refractory material, is applied in foundry.
Description
Technical field
The present invention relates to casting fields, more specifically, it is related to a kind of ladle baking method.
Background technology
Ladle be in foundry industry transport high temperature fluent metal utensil, inside have its used for refractory material packing material, by
Processing evaporation of water is not carried out in the ladle newly built by laying bricks or stones, integrated environment is moister, is connect at this time with high temperature metal liquid
The dangerous situations such as explosion, molten metal splashing, thermal current impact are will produce when tactile, so enabling the packing material of ladle in potroom
Roasting packet operation must be carried out before two-maing ladle after renovation, will be packaged in material inside ladle and be carried out sufficient dehydration, and then proceed to
Baking waits for that its consolidation, final high temperature baking make its sizing, can come into operation in the case where being completely dried.
Ladle toasts frequently with electrical heating Ladle-casting apparatus ramped thermal in enterprise in the prior art, however simple use
The mode of ramped thermal, which toasts ladle, can be such that the packing material in ladle is molded in the case of not complete consolidation, reduce
It is packaged the service life of material.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of ladle baking method, pass through（1）
The roasting Bao Jing of setting,（2）Just heating,（3）Reheat,（4）Heat eventually,（5）Complete and etc. realize and make bonding between packing material
More consolidation, to improve the service life for being packaged material.
To achieve the above object, the present invention provides following technical solutions：Include the following steps：
（1）Bao Jing is baked in setting：The Special roasting Bao Jing that baking ladle is built in place is poured in steel smelting, ladle is placed by driving a vehicle
Inside roasting Bao Jing, electrical heating Ladle-casting apparatus is placed on ladle by driving a vehicle, roasting Bao Jing is left in driving driving；
（2）Just heating：Control electrical heating Ladle-casting apparatus uniformly rises to 190 DEG C ~ 220 DEG C in 30 minutes from room temperature；
（3）It reheats：Control electrical heating Ladle-casting apparatus uniformly rises to 490 DEG C ~ 510 in 20 minutes from 190 DEG C ~ 220 DEG C
℃；
（4）Heating eventually：Control electrical heating Ladle-casting apparatus uniformly rises to 800 DEG C ~ 810 in 40 minutes from 390 DEG C ~ 410 DEG C
DEG C, keep the temperature five minutes；
（5）It completes：Baking terminates, and is hung out electrical heating Ladle-casting apparatus by driving a vehicle, and ladle is hung out and put into production by driving a vehicle,
It carries and new ladle to be baked is put by driving.
By using above-mentioned technical proposal, the method to be heated up using broken line, in first heating stepses, by ladle internal temperature
It is to be packaged the moisture discharge in material, and reduce the moisture being packaged in material to follow-up consolidation process to rise to 190 DEG C ~ 220 DEG C
It influences；In middle heating process, it is to make every ingredient consolidation of packing material that ladle internal temperature, which is risen to 390 DEG C ~ 410 DEG C,
Be bonded together, and will be packaged material inside residual moisture further dry；In whole heating process, by the temperature inside ladle
Degree rises to 800 DEG C ~ 810 DEG C, and keeps the temperature 5 minutes, has been molded this is because being packaged material at 800 DEG C ~ 810 DEG C, and inside it
Most moisture be discharged, and be packaged after high-temperature baking the every ingredient inside material consolidation be connected to
Together, it can come into operation, keep the temperature the difference that 5 minutes are the surface temperatures of internal temperature and packing material in order to reduce packing material,
The surface of packing material and internal structure is further set to be subjected to same high-temperature baking；In entirely heating baking process, just heat
Temperature curve slope be less than the slope of the temperature variation curve reheated, first heating process can in this way carried out more slow
Slowly, so that the moisture in packing material is more fully discharged, improve the service life of ladle；The temperature variation curve of reheating
Slope be more than the temperature curve slope that just heats and can make the bonding for capableing of rapidly consolidation in packing material between every ingredient
Together, make packing material more consolidation, packing material is made to be capable of providing the time lengthening of heat insulation；The temperature change heated eventually is bent
The slope of line is less than the slope of the temperature variation curve reheated, and needs heat preservation 5 minutes, this is for the inside for construction materials contract of fighting each other
Apply essentially identical high-temperature baking with surface, so that the temperature difference of the inside and surface that are packaged material after heating eventually is reduced, reach
Expect the internal and external purpose with same heat insulation after being subjected to same high-temperature baking to being packaged.
Preferably：The step（2）In when Ladle-casting apparatus is warming up to 200 DEG C, keep the temperature ten minutes.
By using above-mentioned technical proposal, it can further make the moisture in packing material that packing be discharged under high-temperature baking
The moisture being packaged inside material can be also discharged to the external world by material in soaking time, alleviated and steamed due to being packaged material internal moisture
The problem of material service life bottom is packaged caused by hair degree is insufficient.
Preferably：The step（3）In when Ladle-casting apparatus is warming up to 500 DEG C, keep the temperature 25 minutes.
By using above-mentioned technical proposal, every ingredient of the every ingredient and packing material surface inside packing material can be made
It is subjected to same high-temperature baking, is alleviated and is packaged material surface items ingredient consolidation bonding but is packaged the viscous of the inside items ingredient expected
The degree of connecing is weaker than the problem of surface, and then enhances and be packaged material internal consistency with surface variation during reheating, and carries
It is high to be packaged the service life of material, and then improve the service life of ladle.
Preferably：In the step（1）In bake the side wall of Bao Jing and bottom surface is laid with accumulated heat plate, accumulated heat plate is thick in 20mm
The heat-insulating material composition of 80mm thickness is covered on steel plate, heat-insulating material is located at steel plate back in the one side of roasting packet well side wall；
The formula of the heat-insulating material is：Aluminate chamotte 18wt%, ripe high-alumina fly 9wt%, light a fire mud 40wt% and water
33wt%；
The production method of the heat-insulating material is：By aluminate chamotte, ripe high-alumina fly, light a fire mud and water stirs evenly.
By using above-mentioned technical proposal, can by the accumulated heat plate with heat-insulating material to baking the internal insulation of Bao Jing,
Reduce temperature to the transmission outside roasting Bao Jing, and then the temperature difference between the outside of ladle and the inside of ladle is made to reduce, alleviates
Expect that surface cured effect gap is excessive with packing with the caused internal cured effect of packing material of external excessive temperature differentials inside ladle
Problem, and then the cured effect for being packaged material is improved, improve the service life for being packaged material.
Preferably：The step（1）In on the top of roasting Bao Jing place heat-insulating shield, heat-insulating shield be 10mm thickness insulation every
The two sides of hot cloud motherboard cover 40mm heat-insulating material constitute, opened up on heat-insulating shield a diameter of steel ladle opening diameter five/
One centre bore, centre bore runs through the heat-insulating shield and centre bore and ladle are coaxial.
Can be to be packaged the steam that material leaks out during being baked out of ladle to carry by using above-mentioned technical proposal
For channel, so that steam is passed through centre bore and be discharged to the external world, reduce moisture convergence inside ladle or inside roasting Bao Jing with packing
Pollution caused by material reduces steam after the completion of ladle baking and is cooled to be adhered to be packaged and expects surface to reduce cured effect
May, further improve the service life for being packaged material.
Preferably：The step（1）In after installation is complete for the accumulated heat plate in roasting Bao Jing, use 300 DEG C ~ 400 DEG C of silicon
Ingot inside roasting Bao Jing to being preheated to 200 DEG C ~ 230 DEG C.
By using above-mentioned technical proposal, preheating is carried out to roasting packet well and is to be able to subtract in the roasting packet procedures of ladle
Temperature difference between small packing material is inside and outside is to be packaged material one hot environment of creation to be convenient for entire baking process in advance
It carries out, and silicon ingot price is relatively low, needs the operating mode suitable degree of roasting packet high for a long time with foundry enterprise.
Preferably：The ladle includes shell and the packing material positioned at enclosure, and the packing material is by siccative and water
It mixes, each specifications of raw materials and weight proportion are respectively in the formula of siccative：The two level coke powder of 10 ~ 15 mesh, 30%；Silicic acid
Salt chamotte, 10%；Sodium metasilicate, 5%；The fire clay of 200 ~ 400 mesh, 10%；The purity quartzite of 6 ~ 7 mesh, 20%；15~45
Purpose purity quartzite, 20%；200 purposes refine silica flour, and 5%；The weight of the water accounts for the 20% of the siccative total weight.
By using above-mentioned technical proposal, the height for expecting that 1450 DEG C or more can be born is packaged made of above-mentioned raw material
Temperature can be used in commonly being packaged the founding that material is difficult to applicable 45M materials, if being packaged material using made of conventional former material, no
Only high rejection rate, and the service life for being packaged material can also drastically reduce, and be unfavorable for producing and processing.
Preferably：The ladle for being packaged material and making as needed, various raw materials are weighed up by the dry material proportion；It will be described
Each raw material of siccative is fully mixed even, then weight is accounted for the water of the siccative total weight 20% and is slowly poured into, side bevelling stirring, at uniform
It is adhered to after paste on the outer casing inner wall.
By using above-mentioned technical proposal, packing material to be baked is made after the every former material for being packaged material capable of being mixed.
In conclusion the present invention has the advantages that compared with the prior art：1. can pass through（1）The roasting packet of setting
Well,（2）Just heating,（3）Reheat,（4）Heat eventually,（5）Complete and etc. realize and make bonding more consolidation between packing material,
To improve the service life for being packaged material.
Specific implementation mode
Embodiment one：A kind of ladle baking method, specific method and step are as follows：
（1）Bao Jing is baked in setting：The Special roasting Bao Jing that baking ladle is built in place is poured in steel smelting, by the aluminate fire of 18wt%
Mud, the ripe high-alumina fly of 9wt%, 40wt% the water uniform stirring of light a fire mud and 33wt% pasta heat-insulating material is made.?
The heat-insulating material of the two sides uniform fold 40mm of the insulated heat micarex of 10mm thickness simultaneously makes heat-insulating material natural air drying be formed absolutely
Hot plate.On the steel plate of 20mm thickness the heat-insulating material of uniform fold 80mm thickness and accumulated heat is formed after making heat-insulating material natural air drying
Plate.It is laid with accumulated heat plate in the side wall of roasting Bao Jing and bottom surface, so that accumulated heat plate is covered the side wall of roasting Bao Jing and bottom surface, heat insulating material material position
In steel plate back in the one side of roasting packet well side wall.After installation is complete for the accumulated heat plate in roasting Bao Jing, using 350 DEG C of silicon ingots to roasting
It is preheated to 220 DEG C inside Bao Jing, and so that the inside of roasting Bao Jing is protected under conditions of 220 DEG C by replacing 350 DEG C of silicon ingot repeatedly
Wen Sanshi minutes.Ladle is placed on by driving inside roasting Bao Jing, electrical heating Ladle-casting apparatus is placed on ladle by driving a vehicle,
Roasting Bao Jing is left in driving driving；The center of a diameter of steel ladle opening diameter 1/5th is opened up in the center position of heat-insulating shield
Hole, center vertical direction hole run through heat-insulating shield, heat-insulating shield are placed on to the top of roasting Bao Jing, and keep centre bore coaxial with ladle.
（2）Just heating：Control electrical heating Ladle-casting apparatus uniformly rises to 200 DEG C in 30 minutes from room temperature；Heat preservation is very
Clock.
（3）It reheats：Control electrical heating Ladle-casting apparatus is uniformly heated to 500 DEG C in 20 minutes from 200 DEG C；Heat preservation
25 minutes.
（4）Heating eventually：Control electrical heating Ladle-casting apparatus uniformly rises to 800 DEG C in 40 minutes from 500 DEG C, heat preservation five
Minute；
（5）It completes：Baking terminates, and is hung out electrical heating Ladle-casting apparatus by driving a vehicle, and ladle is hung out and put into production by driving a vehicle,
Before being put into new ladle to be baked by driving, the silicon ingot for reusing 350 DEG C makes to being preheated in roasting Bao Jing inside roasting Bao Jing
Temperature rise to 220 DEG C after, be put into new ladle.
Ladle is formed by shell and positioned at the packing material of enclosure, and shell is welded by boiler plate, be packaged material by
Siccative and water mix.The formula of siccative is：The two level coke powder of 10 ~ 15 mesh, 30%；Silicate chamotte, 10%；Sodium metasilicate,
5%；The fire clay of 200 ~ 400 mesh, 10%；The purity quartzite of 6 ~ 7 mesh, 20%；The purity quartzite of 15 ~ 45 mesh, 20%；
200 purposes refine silica flour, and 5%；The weight of water accounts for the 20% of siccative total weight.Now every raw material is fully mixed it is even, then by water
It pours into, is stirred in pouring, ultimately form paste, be then adhered on the inner wall of shell.
Embodiment two：A kind of ladle baking method, its step are as follows：
Using a kind of content operation of roasting packet method disclosed in embodiment one.
The ladle heating means of one steel Foundry Works in certain city are transformed, the single ladle of original of the Foundry Works
Roasting be bundled into originally is 780.5 yuans, and the service life of raw steel packet is each ladle can use twice just needs after repair
It replaces and is packaged material, rejection rate is 30% when to 45M materials'uses.Using a kind of roasting packet method disclosed in embodiment one to ladle
Baking.It tries out after stablizing, long-term use data show that roasting be bundled into of single ladle is originally reduced to 27.3 yuans, when a steel
Packet can after simplified overhauling using reused by larger repair after six times just need replacing twice packing material, to 45M
Rejection rate is 2% when materials'use, and the service life for being packaged material is improved significantly, and toasts cost and dropped significantly
It is low, while the rejection rate of ladle is also reduced when to 45M materials'uses.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of ladle baking method, it is characterised in that：Include the following steps：
（1）Bao Jing is baked in setting：The Special roasting Bao Jing that baking ladle is built in place is poured in steel smelting, ladle is placed by driving a vehicle
Inside roasting Bao Jing, electrical heating Ladle-casting apparatus is placed on ladle by driving a vehicle, roasting Bao Jing is left in driving driving；
（2）Just heating：Control electrical heating Ladle-casting apparatus uniformly rises to 190 DEG C ~ 220 DEG C in 30 minutes from room temperature；
（3）It reheats：Control electrical heating Ladle-casting apparatus uniformly rises to 490 DEG C ~ 510 in 20 minutes from 190 DEG C ~ 220 DEG C
℃；
（4）Heating eventually：Control electrical heating Ladle-casting apparatus uniformly rises to 800 DEG C ~ 810 in 40 minutes from 390 DEG C ~ 410 DEG C
DEG C, keep the temperature five minutes；
（5）It completes：Baking terminates, and is hung out electrical heating Ladle-casting apparatus by driving a vehicle, and ladle is hung out and put into production by driving a vehicle,
It carries and new ladle to be baked is put by driving.
2. a kind of ladle baking method according to claim 1, it is characterised in that：The step（2）In when Ladle-casting apparatus liter
When temperature is to 200 DEG C, ten minutes are kept the temperature.
3. a kind of ladle baking method according to claim 1, it is characterised in that：The step（3）In when Ladle-casting apparatus liter
When temperature is to 500 DEG C, 25 minutes are kept the temperature.
4. a kind of ladle baking method according to claim 1, it is characterised in that：In the step（1）In bake Bao Jing
Side wall and bottom surface are laid with accumulated heat plate, and accumulated heat plate is the heat-insulating material composition that 80mm thickness is covered on the steel plate of 20mm thickness, heat insulating material
Material position is in steel plate back in the one side of roasting packet well side wall；
The formula of the heat-insulating material is：Aluminate chamotte 18wt%, ripe high-alumina fly 9wt%, light a fire mud 40wt% and water
33wt%；
The production method of the heat-insulating material is：By aluminate chamotte, ripe high-alumina fly, light a fire mud and water stirs evenly.
5. a kind of ladle baking method according to claim 4, it is characterised in that：The step（1）In roasting Bao Jing's
Heat-insulating shield is placed on top, and heat-insulating shield is to cover the heat-insulating material structure of 40mm on the two sides of the insulated heat micarex of 10mm thickness
At, open up the centre bore of a diameter of steel ladle opening diameter 1/5th on heat-insulating shield, centre bore through the heat-insulating shield and in
Heart hole and ladle are coaxial.
6. a kind of ladle baking method according to claim 1, it is characterised in that：The step（1）In when in roasting Bao Jing
Accumulated heat plate after installation is complete, using 300 DEG C ~ 400 DEG C of silicon ingots to being preheated to 200 DEG C ~ 230 DEG C inside roasting Bao Jing.
7. a kind of ladle baking method according to claim 1, it is characterised in that：The ladle includes shell and is located at
The packing material of enclosure, the packing material are mixed by siccative and water, each specifications of raw materials and weight in the formula of siccative
Proportioning is respectively：The two level coke powder of 10 ~ 15 mesh, 30%；Silicate chamotte, 10%；Sodium metasilicate, 5%；The fire resisting of 200 ~ 400 mesh
Clay, 10%；The purity quartzite of 6 ~ 7 mesh, 20%；The purity quartzite of 15 ~ 45 mesh, 20%；200 purposes refine silica flour,
5%；The weight of the water accounts for the 20% of the siccative total weight.
8. a kind of ladle baking method according to claim 7, it is characterised in that：It is described to be packaged what material was made as needed
Ladle weighs up various raw materials by the proportioning of the siccative；Each raw material of the siccative is fully mixed even, then weight is accounted for into the siccative
The water of total weight 20% slowly pours into, side bevelling stirring, at being adhered on the inner wall of the shell after uniform paste.
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| EP0081692A3 (en) * | 1981-12-14 | 1984-02-01 | Dr. C. Otto & Comp. Gesellschaft Mit Beschrankter Haftung | Process for preparing unburned refractory bricks |
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