CN107399976A - One kind centrifuges large-scale rolled bar roller end lid refractory material and method for manufacturing end cover - Google Patents
One kind centrifuges large-scale rolled bar roller end lid refractory material and method for manufacturing end cover Download PDFInfo
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- CN107399976A CN107399976A CN201710482161.2A CN201710482161A CN107399976A CN 107399976 A CN107399976 A CN 107399976A CN 201710482161 A CN201710482161 A CN 201710482161A CN 107399976 A CN107399976 A CN 107399976A
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- bauxite
- refractory material
- end cap
- water
- roll
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/101—Moulds
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- 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
Abstract
Centrifuge large-scale rolled bar roller end lid refractory material and method for manufacturing end cover containing the refractory material the invention provides a kind of, in the refractory material each component by mass percentage, including：Bauxite 25 35%, zirconium English powder 8 10%, alumina cement 12 15%, silicon dioxide powder 35 45%, water 5 10%；Wherein, the bauxite is made up of following components proportioning：Granularity is that 3 8mm bauxite accounts for 10 15%, and granularity is that 1 3mm bauxite accounts for 15 25%.Roll end cap refractory material provided by the invention, possesses the characteristics of intensity is high, refractoriness is high, adhesive force between end cap is good, do not allow when cast centrifuges large-scale bar roll easy to fall off, it can ensure that end cap does not damage, molten iron is not run away, and effectively solves the problems, such as slag inclusion caused by roll recombination region, ensure that the security of production and the quality of product well.
Description
Technical field
The invention belongs to centrifugal roller technical field, and in particular to one kind centrifuges large-scale rolled bar roller end lid refractory material
And the manufacture method of the end cap.
Background technology
Roll is the important metallurgical equipment in Rolling production, and one of main consumption equipment, and roll consumption is about steel rolling
The 5-15% of production cost.In order to improve roll quality, roll production cost is reduced, existing roll enterprise both at home and abroad generally uses
The mode of centrifugal casting carries out roll production.Roll quality is not only related to Rolling production cost and milling train production efficiency, also exists
Largely influence the quality of stocking.With the continuous development of roll production technology, the wearability of existing roll, intensity and tough
Property has obtained larger raising.
The method of manufacture roll has two kinds of forging and casting, and centrifugal casting roll is especially cast because its advantage is notable
The characteristics of making bimetallic composite roll, peace has been set to turn into the main production of roll at this stage.Roll is produced in centrifugal casting
In the bad technique of hair, often an end cap is placed at the forward and backward both ends of mould so that shape between mould and former and later two end caps
First cast is placed on centrifugal casting machine into cavity, during cast, molten iron is injected in the die cavity of rotation, makes iron using centrifugal action
The outer layer hair that water forms roll in die cavity inner surface is bad, then removes cold mould, then pours into a mould core of the roll, obtains solid roller casting
Hair is bad.
Existing end cap is mostly the end cap of irony, usually makes thick resistance to of one layer of 50-500mm in the working face of end cap
Fiery cement layer, production and application is carried out after the drying of refractory cement layer.But this refractory cement layer possess intensity difference, refractoriness compared with
The defects of low, in the production process for centrifuging large-scale bar roll, the temperature of molten metal is typically up to more than 1200 DEG C of high temperature,
As high-speed rotation occurs under the influence of centrifugal force for molten metal so that abrasion and heat fatigue easily occur for refractory cement layer, resistance to
Elevated temperature strength and thermal shock resistance are inadequate, and the adhesive force between refractory cement layer and end cap is inadequate, and refractory cement layer is easy
Being come off after being impacted by high-temperature metal liquation, end cap molding sand is fragile, and interior metal liquation easily overflows, and causes potential safety hazard, and
So that there is the problem of slag inclusion in roll recombination region.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to provide one kind to centrifuge large-scale rolled bar roller end lid with resistance to
The preparation method of fiery material and the end cap, roll end cap refractory material provided by the invention, possess intensity height, refractoriness height,
Adhesive force between end cap is good, does not allow easy to fall off when cast centrifuges large-scale bar roll, can ensure that end cap does not damage, iron
Water is not run away, and effectively solve the problems, such as slag inclusion caused by roll recombination region, ensure that the security and product of production well
Quality.
In order to realize first purpose of the present invention, the technical solution adopted by the present invention is that one kind centrifuges large-scale rolled bar
Roller end lid refractory material, in the refractory material each component by mass percentage, including：Bauxite 25-35%, zirconium English powder
8-10%, alumina cement 12-15%, silicon dioxide powder 35-45%, water 5-10%；Wherein, the bauxite is matched somebody with somebody by following components
Than composition：The bauxite that granularity is 3-8mm accounts for 10-15%, and granularity is that 1-3mm bauxite accounts for 15-25%.
Refractory material provided by the invention, it is applied on roll end cap face, possesses the spies such as porosity is high, thermal conductivity factor is small
Point, it is ensured that refractory material has excellent thermal insulation and stores gas, and possesses that refractoriness is high, coefficient of thermal expansion is small, high temperature is steady
The features such as qualitative good, it can effectively strengthen the associativity between skin-material and primer and end cap, it is large-scale centrifuge
When bar roll is poured into a mould, end cap molding sand is hardly damaged, and can effectively prevent molten iron from overflowing and slag inclusion phenomenon.
As preferable technical scheme, the particle diameter of the zirconium English powder is 100-150 mesh.
As preferable technical scheme, the particle diameter of the silicon dioxide powder is 10-15um.
Second object of the present invention is to provide the large-scale rolled bar roller end lid of the centrifugation containing refractory material of the present invention
Manufacture method, comprise the following steps：
(1) total Water 30-40% is added in the bauxite for being first 3-8mm to granularity, mud is made in the water that temperature is 55-60 degree
Mud slurry uniform, is then layed in the surface of roll end cap, checks the flatness on surface, if irregularity degree is more than 5mm, enter by slurry
The smooth processing of row；
(2) zirconium English powder, silicon dioxide powder and alumina cement are sufficiently mixed, add total Water 25-35%, temperature 55-
60 degree of water is sufficiently humidified so as to and stirred in mixture, by mixture, is then layed in the mud surface of step (1), inspection
Table look-up the flatness in face, if irregularity degree is more than 3mm, carry out smooth processing；
(3) uniform ram-jolt is carried out to the surface of step (2) gains, pulp-water is gone out by surface and is defined, with ruler equating, by table
Face smoothing is untill without hole, bubble-free；
(4) water at room temperature of surplus is added into the bauxite that granularity is 1-3mm, is layed in after well mixed
Step (3) gains surface, moulding is carried out to end cap, then place 48h naturally and baked with enterprising kilning；
(5) the roll end cap that moulding finishes is obtained after toasting, carries out technic index detection.
As preferable technical scheme, the particle diameter of zirconium English powder described in step (2) is 100-150 mesh.
As preferable technical scheme, the particle diameter of silicon dioxide powder described in step (2) is 10-15 μm.
Present invention selection bauxite, zirconium English powder, alumina cement and silicon dioxide powder are as main fire-resistant base material.Due to zirconium English
The fusing point of powder is up to 1775 DEG C, and heat resistance is good, and linear expansion coefficient is small, good thermal shock stability, refractoriness are high, and in high temperature
To most of alloys not chemically reactive, but when making base-material with zirconium English powder merely, because its heat-insulating property is poor, casting mold is easily heated
Percussion, service life is shorter, and easily causes roller surface cracking, and the density of zirconium English powder is high, is applied as refractory material
Suspension is poor when being put on end cover surface.Silicon dioxide powder has a higher refractoriness, during 1350 DEG C of temperature ＜ structure substantially without
Change, remain to keep higher heat-insulating property, it is in refractory material to have application more.Alumina cement is a kind of hydraulicity gel material
Material, used in refractory material frequently as bonding agent, but alumina cement has seriously strong at a temperature of 900~1200 DEG C
Degree declines phenomenon so that molten metal refractory material in rotation process is centrifuged easily ftractures, come off, end cap molding sand rapid wear
Bad, interior metal liquation easily overflows.
The present invention is mixed by using zirconium English powder, silicon dioxide powder and alumina cement three, wherein the grain of zirconium English powder
Between 100-150 mesh, the particle diameter of titanium dioxide aluminium powder is 10-15 μm in footpath.Aquation occurs after being mixed by alumina cement with water
Reaction, being formed in end cover surface, there is crystallization grid structure to improve the intensity of material；And after silicon dioxide powder meets water
Also colloidal particle can be formed, when the electrostatic repulsion on colloidal particle surface is less than its gravitation, due to its intermolecular Van der Waals force
And make Coagulating binding occurs between colloidal particle, siloxane network can be formed and harden material, improve intensity；
And the crystallization grid structure and two of alumina cement formation can be effectively attached to high refractoriness and low-expansion zirconium English powder
Between the siloxane network that silica powder is formed, the defects of zirconium English powder density is big, suspension is poor, its energy are improved well
In enough closely embedded meshes, the density fireproof layer that fire resistance is good, high temperature strength is high, thermal shock resistance is strong is formed, and
Adhesive force is strong, and flame retardant coating is not easy to be impacted by high-temperature metal liquation and come off.By the particle diameter and titanium dioxide that select above-mentioned zirconium English powder
The particle diameter of silica flour, silicon dioxide powder is enabled to form stable network structure, and zirconium English powder both ends can be embedded in high alumina water simultaneously
Mud is crystallized in rack and silicon dioxide powder network structure, substantially improves the phenomenon that alumina cement is easy to crack and falls off.
The present invention is sent out by selecting varigrained bauxite as skin-material and primer, while with grid structure
Life is combined closely, between the bauxite granularity selection 1-3mm of end cap working face so that forms the thermal insulation of densification in end cover surface
Layer, the high temperature strength and thermal shock resistance of material are further increased, and wear-resistant and thermal fatigue resistance greatly enhances,
And primer selection granularity bonds for 3-8mm bauxite with end cap, possess the advantages of porosity is high, and thermal insulation is good, it is middle
The mixing high-strength refractory material that layer is formed by zirconium English powder, silicon dioxide powder and alumina cement, possess refractoriness height, the coefficient of expansion
It is small, and good thermal shock stability, use it on roll end cap, the intensity and refractoriness of centrifugal roller end cap can be greatly enhanced,
And the adhesive property between end cap is good, refractory masses will not be fallen off by the impact of high-temperature metal liquation, will not be damaged
Bad end cap type a widow, it can effectively solve the problem that slag inclusion problem caused by roll recombination region.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments to the present invention
It is specifically described, it is necessary to, it is noted that following examples are used only for that the present invention is explained and illustrated, be not used to
Limit the present invention.Some nonessential modifications and adaptations that those skilled in the art are made according to foregoing invention content, still belong to
In protection scope of the present invention.
Embodiment 1
One kind centrifuges large-scale rolled bar roller end lid refractory material, by mass percentage, including following components：Bauxite
25%th, zirconium English powder 10%, alumina cement 15%, silicon dioxide powder 40%, water 10%；Wherein, the bauxite is by following components
Proportioning composition：Granularity is that 3-8mm bauxite accounts for 10%, and granularity is that 1-3mm bauxite accounts for 15%；The particle diameter of the zirconium English powder
For 100-150 mesh, the particle diameter of the silicon dioxide powder is 10-15 μm.
The manufacture method of roll end cap with above-mentioned refractory material is as follows：
(1) mud is made in addition total Water 30%, the water that temperature is 55 DEG C in the bauxite for being first 3-8mm to granularity, so
Mud slurry uniform is layed in the surface of roll end cap afterwards, surface smoothness is checked, makes irregularity degree≤5mm；
(2) zirconium English powder, silicon dioxide powder and alumina cement are sufficiently mixed, add total Water 25%, temperature is 55 DEG C
Water is sufficiently humidified so as to and stirred in mixture, by mixture, is then layed in the mud surface of step (1), checks surface
Flatness, make irregularity degree≤5mm；
(3) uniform ram-jolt is carried out to the surface of step (2) gains, pulp-water is gone out by surface and is defined, with ruler equating, by table
Face smoothing is untill without hole, bubble-free；
(4) water at room temperature of surplus is added into the bauxite that granularity is 1-3mm, is layed in after well mixed
Step (3) gains surface, moulding is carried out to end cap, then place 48h naturally and baked with enterprising kilning；
(5) the roll end cap that moulding finishes is obtained after toasting, carries out technic index detection.
Above-mentioned end cap is used to centrifuge large-scale bar roll casting, refractory material intact at a high temperature of 1400 DEG C can make
With material surface does not destroy, and high temperature strength and thermal shock resistance are more excellent, and access times are up to more than 1000 times, material
Expect that surface is substantially unchanged, good with the contact surface of end cap, no obscission, end cap molding sand is not damaged during use,
Do not occur molten metal spillover, roll recombination region generates without slag inclusion.
Embodiment 2
One kind centrifuges large-scale rolled bar roller end lid refractory material, by mass percentage, including following components：Bauxite
35%th, zirconium English powder 8%, alumina cement 12%, silicon dioxide powder 45%, water 5%；Wherein, the bauxite is matched somebody with somebody by following components
Than composition：Granularity is that 3-8mm bauxite accounts for 15%, and granularity is that 1-3mm bauxite accounts for 20%；The particle diameter of the zirconium English powder is
100-150 mesh, the particle diameter of the silicon dioxide powder is 10-15 μm.
The manufacture method of roll end cap with above-mentioned refractory material is as follows：
(1) mud is made in addition total Water 40%, the water that temperature is 60 DEG C in the bauxite for being first 3-8mm to granularity, so
Mud slurry uniform is layed in the surface of roll end cap afterwards, surface smoothness is checked, makes irregularity degree≤5mm；
(2) zirconium English powder, silicon dioxide powder and alumina cement are sufficiently mixed, add total Water 35%, temperature is 60 DEG C
Water is sufficiently humidified so as to and stirred in mixture, by mixture, is then layed in the mud surface of step (1), checks surface
Flatness, make irregularity degree≤5mm；
(3) uniform ram-jolt is carried out to the surface of step (2) gains, pulp-water is gone out by surface and is defined, with ruler equating, by table
Face smoothing is untill without hole, bubble-free；
(4) water at room temperature of surplus is added into the bauxite that granularity is 1-3mm, is layed in after well mixed
Step (3) gains surface, moulding is carried out to end cap, then place 48h naturally and baked with enterprising kilning；
(5) the roll end cap that moulding finishes is obtained after toasting, carries out technic index detection.
Above-mentioned end cap is used to centrifuge large-scale bar roll casting, refractory material intact at a high temperature of 1500 DEG C can make
With material surface does not destroy, and high temperature strength and thermal shock resistance are more excellent, and access times are up to more than 1500 times, material
Expect that surface is substantially unchanged, good with the contact surface of end cap, no obscission, end cap molding sand is not damaged during use,
Do not occur molten metal spillover, roll recombination region generates without slag inclusion.
Embodiment 3
One kind centrifuges large-scale rolled bar roller end lid refractory material, by mass percentage, including following components：Bauxite
30%th, zirconium English powder 10%, alumina cement 14%, silicon dioxide powder 38%, water 8%；Wherein, the bauxite is matched somebody with somebody by following components
Than composition：Granularity is that 3-8mm bauxite accounts for 12%, and granularity is that 1-3mm bauxite accounts for 18%；The particle diameter of the zirconium English powder is
100-150 mesh, the particle diameter of the silicon dioxide powder is 10-15 μm.
The manufacture method of roll end cap with above-mentioned refractory material is as follows：
(1) mud is made in addition total Water 35%, the water that temperature is 58 DEG C in the bauxite for being first 3-8mm to granularity, so
Mud slurry uniform is layed in the surface of roll end cap afterwards, surface smoothness is checked, makes irregularity degree≤5mm；
(2) zirconium English powder, silicon dioxide powder and alumina cement are sufficiently mixed, add total Water 25%, temperature is 58 DEG C
Water is sufficiently humidified so as to and stirred in mixture, by mixture, is then layed in the mud surface of step (1), checks surface
Flatness, make irregularity degree≤5mm；
(3) uniform ram-jolt is carried out to the surface of step (2) gains, pulp-water is gone out by surface and is defined, with ruler equating, by table
Face smoothing is untill without hole, bubble-free；
(4) water at room temperature of surplus is added into the bauxite that granularity is 1-3mm, is layed in after well mixed
Step (3) gains surface, moulding is carried out to end cap, then place 48h naturally and baked with enterprising kilning；
(5) the roll end cap that moulding finishes is obtained after toasting, carries out technic index detection.
Above-mentioned end cap is used to centrifuge large-scale bar roll casting, refractory material intact at a high temperature of 1800 DEG C can make
With material surface does not destroy, and high temperature strength and thermal shock resistance are more excellent, and access times are up to more than 2000 times, material
Expect that surface is substantially unchanged, good with the contact surface of end cap, no obscission, end cap molding sand is not damaged during use,
Do not occur molten metal spillover, roll recombination region generates without slag inclusion.
Claims (6)
1. one kind centrifuges large-scale rolled bar roller end lid refractory material, it is characterised in that each component presses matter in the refractory material
Percentages are measured, including：Bauxite 25-35%, zirconium English powder 8-10%, alumina cement 12-15%, silicon dioxide powder 35-45%,
Water 5-10%；Wherein, the bauxite is made up of following components proportioning：Granularity is that 3-8mm bauxite accounts for 10-15%, granularity
15-25% is accounted for for 1-3mm bauxite.
2. the large-scale rolled bar roller end lid refractory material of centrifugation according to claim 1, it is characterised in that the zirconium English powder
Particle diameter be 100-150 mesh.
3. the large-scale rolled bar roller end lid refractory material of centrifugation according to claim 1, it is characterised in that the titanium dioxide
The particle diameter of silica flour is 10-15 μm.
4. the manufacture method of the large-scale rolled bar roller end lid of centrifugation containing refractory material as claimed in claim 1, it is characterised in that
Comprise the following steps：
(1) mud is made in the water that addition total Water 30-40%, temperature are 55-60 DEG C in the bauxite for being first 3-8mm to granularity,
Then mud slurry uniform is layed in the surface of roll end cap, check surface smoothness, make irregularity degree≤5mm；
(2) zirconium English powder, silicon dioxide powder and alumina cement are sufficiently mixed, add total Water 25-35%, temperature is 55-60 DEG C
Water in mixture, mixture is sufficiently humidified so as to and stirred, is then layed in the mud surface of step (1), checks table
Surface evenness, make irregularity degree≤5mm；
(3) uniform ram-jolt is carried out to the surface of step (2) gains, pulp-water is gone out by surface and is defined, with ruler equating, surface is repaiied
Light is untill without hole, bubble-free；
(4) water at room temperature of surplus is added into the bauxite that granularity is 1-3mm, step is layed in after well mixed
(3) gains surface, moulding is carried out to end cap, then places 48h naturally and baked with enterprising kilning；
(5) the roll end cap that moulding finishes is obtained after toasting, carries out technic index detection.
5. manufacture method according to claim 4, it is characterised in that the particle diameter of zirconium English powder described in step (2) is 100-
150 mesh.
6. manufacture method according to claim 4, it is characterised in that the particle diameter of silicon dioxide powder is described in step (2)
10-15μm。
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| CN201710482161.2A CN107399976B (en) | 2017-06-22 | 2017-06-22 | Refractory material for centrifugal large-scale bar roll end cover and end cover manufacturing method |
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| CN201710482161.2A CN107399976B (en) | 2017-06-22 | 2017-06-22 | Refractory material for centrifugal large-scale bar roll end cover and end cover manufacturing method |
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| CN107399976B CN107399976B (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110436858A (en) * | 2019-08-15 | 2019-11-12 | 成都三强轧辊股份有限公司 | A kind of large H-shaped steel collars end cap concrete and its application method |
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| CN101475390A (en) * | 2009-01-16 | 2009-07-08 | 张命荣 | Al2O3/ZrO2 refractory casting material and using method thereof |
| CN103880452A (en) * | 2014-03-31 | 2014-06-25 | 沈阳金安铸造材料有限公司 | Unshaped refractory material |
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| CN101475390A (en) * | 2009-01-16 | 2009-07-08 | 张命荣 | Al2O3/ZrO2 refractory casting material and using method thereof |
| CN103880452A (en) * | 2014-03-31 | 2014-06-25 | 沈阳金安铸造材料有限公司 | Unshaped refractory material |
| CN105110801A (en) * | 2015-07-20 | 2015-12-02 | 山东乐江建筑新材料有限公司 | Foamed lightweight refractory castable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436858A (en) * | 2019-08-15 | 2019-11-12 | 成都三强轧辊股份有限公司 | A kind of large H-shaped steel collars end cap concrete and its application method |
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| CN107399976B (en) | 2020-07-24 |
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