CN105339315B - Float tank top component, float sheet glass manufacturing apparatus and float flat glass manufacture method using it - Google Patents
Float tank top component, float sheet glass manufacturing apparatus and float flat glass manufacture method using it Download PDFInfo
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- CN105339315B CN105339315B CN201480022193.9A CN201480022193A CN105339315B CN 105339315 B CN105339315 B CN 105339315B CN 201480022193 A CN201480022193 A CN 201480022193A CN 105339315 B CN105339315 B CN 105339315B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/16—Construction of the float tank; Use of material for the float tank; Coating or protection of the tank wall
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B35/16—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 silicates other than clay
- C04B35/18—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 silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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- 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
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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- 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
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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- 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
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
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- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
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Abstract
Float tank top component, the float sheet glass manufacturing apparatus and float flat glass manufacture method using it of deformation of creep when inhibiting use are provided.A kind of float tank top component, wherein, the top component includes alumina silica base sintered body, more than the 90 mass % of each crystalline phase are mullite phase in the alumina silica base sintered body and sodium oxide molybdena, potassium oxide, titanium oxide, total content of iron oxide are below 2 mass %, it is made up of the average grain size D50 coarse grain for being more than 1.0mm and average grain size the D50 particulate for being below 0.1mm, the mass ratio of the coarse grain and particulate is 85~60 mass % and 15~40 mass %.
Description
Technical field
The present invention relates to float tank top component, use its float sheet glass manufacturing apparatus and float flat glass
Manufacture method.
Background technology
A kind of method as manufacture plate glass, it is known that float glass process.In the float glass process, float tank is being referred to as by (1)
Receiving molten tin bath in import melten glass, (2) continuously transported from upstream towards downstream in molten tin melten glass,
(3) melten glass is cooled down while it is discharged from float tank, thus manufactures plate glass.
Generally, the top plate portion for being referred to as float tank top cover is provided with the top of float tank.The float tank top cover is under
The refractory brick that side (side i.e. relative with float tank) engages with multiple suspension brackets is formed, i.e., float tank top cover is overhung construction (ginseng
See patent document 1~2).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 6-239631 publications
Patent document 2：Japanese Unexamined Patent Publication 2001-139336 publications
The content of the invention
Invent problem to be solved
For the refractory brick used in float tank top cover, it is lighter, and having can be at up to 1000 DEG C or so
At a high temperature of long-term use of heat resistance, the evaporant for the defects of manufactured glass can be become during due to using at high temperature
Amount it is few etc., therefore aluminum oxide (Al can be used2O3)-silica (SiO2) base refractory brick, wherein, because sillimanite base is resistance to
Firebrick can apply various forming methods, and can be shaped to variously-shaped etc., therefore can use.
In cold process repairing of float tank etc., the deformation of creep is found in the refractory brick for forming float tank top cover sometimes.Structure
Refractory brick into float tank top cover is formed as the overhung construction engaged with suspension bracket, so if the deformation of creep development of refractory brick
Words, it is likely that depart from from suspension bracket and fall.In addition, during deformation of creep excessive development, it is also possible to produced on refractory brick
Crackle.
For the deformation of creep of refractory brick, temperature is higher, and development is faster, therefore is molded by the higher glass of viscosity
Although for tabular when or be shaped to form the identical but plate glass of thinner thickness when, be shaped to preferred 0.7mm with
Under, the plate glass of more preferably below 0.5mm, further preferred below 0.3mm thinner thickness when, in rise float tank
During atmosphere temperature, it is believed that problem can be more notable.
In addition, retention time of the deformation of creep amount in hot environment elapses and increased over time, therefore make for a long time
Problem then can be especially produced with float tank.
Inhibited it is an object of the invention to provide one kind in order to solve above-mentioned problem of the prior art in hot environment
The float tank top cover component of deformation of creep during lower use, float sheet glass manufacturing apparatus and float glass process flat board using it
Glass-making processes.
The means used to solve the problem
To achieve these goals, the present invention provides a kind of float tank top component, wherein, the top component includes oxygen
Change aluminium-titanium dioxide silicon substrate sintered body, more than the 90 mass % of each crystalline phase is do not come in the alumina silica base sintered body
Shi Xiang and sodium oxide molybdena, potassium oxide, titanium oxide, total content of iron oxide are below 2 mass %, the float tank top component
It is made up of the average grain size D50 coarse grain for being more than 1.0mm and average grain size the D50 particulate for being below 0.1mm, this is thick
The mass ratio of grain and particulate is 85~60 mass % and 15~40 mass %.
For the float tank top component in the mode of the present invention, preferably with 25mm × 15mm × 100mm's
Creep speed in the bending creep test (1300 DEG C, load 3.5MPa) that sample size is carried out is 1 × 10-8/ below s.
In addition, for the present invention a mode in float tank top component for, preferably with 25mm × 15mm ×
1000 hours creep strengths in the bending creep test (1300 DEG C) that 100mm sample size is carried out are more than 6MPa.
In addition, for the float tank top component in the mode of the present invention, preferably described coarse grain and particulate contain
There is mullite particle, the mullite particle is electrofused mullite particle.
In addition, for the float tank top component in the mode of the present invention, preferably in the crystalline phase, Mo Lai
Crystalline phase beyond stone phase, i.e. the containing ratio of corundum and cristobalite is 10 relative to the crystalline phase of alumina silica base sintered body
Below quality %.
In addition, for the float tank top component in the mode of the present invention, beyond preferably described mullite phase
Crystalline phase be any phase of corundum and cristobalite, Liang Zhezhong, the content ratio of corundum is high.
Additionally, it is provided a kind of float sheet glass manufacturing apparatus, for the float glass process flat board glass in the scheme of the present invention
For glass manufacture device, it has the float tank for internally accommodating the float tank of molten tin and being arranged at the top of the float tank
Top cover, it is characterised in that the float tank top cover is made up of the float tank top component of the present invention.
Moreover, the mode of the present invention provides a kind of float flat glass manufacture method, it is included using the present invention's
The float sheet glass manufacturing apparatus of one mode makes float flat glass.
In addition, for the float flat glass manufacture method in the mode of the present invention, preferably described float glass process is put down
Glass sheet is display float glass, and the thickness of the float glass is below 0.7mm.
Invention effect
The float tank top component of the present invention inhibits deformation of creep when using in high temperature environments.
Therefore, in the manufacture of plate glass, the possibility that float tank top component departs from and fallen from suspension bracket is reduced
Property, on float tank top component occur crackle possibility.
In addition, according to this feature, it is suitable for picture and uses during the high glass manufacture plate glass of the viscosity such as alkali-free glass, manufactures
Such manufacture for requiring to improve the float flat glass of the atmosphere temperature in float tank during sheet glass.
In addition, according to this feature, suitable for the manufacture method of the float flat glass of long-term use of float tank.
Brief description of the drawings
Fig. 1 is the curve map of load and the relation of rupture time in expression bending creep test.
Embodiment
Hereinafter, dress is manufactured to the float tank top component in the mode of the present invention and using its float flat glass
Put and illustrate.
Float tank top component in the mode of the present invention includes alumina silica base sintered body, such as patent
Refractory brick in document 1,2 is the same, is supported on the top of float tank by suspension bracket with suspension status to form float tank top cover.It is logical
Often, multiple float tank top components are arranged on the top of float tank and forms float tank top cover.Therefore, need to use on the component
In the insertion section supported with suspension status using suspension bracket or combination section with other components, it is desirable to good mouldability.
The float tank top component of the present invention includes alumina silica base sintered body, the alumina silica
More than the 90 mass % of each crystalline phase are mullite phase in base sintered body, and sodium oxide molybdena, potassium oxide, titanium oxide, iron oxide is total
Content is below 2 mass %, is 0.1mm by the average grain size D50 coarse grain for being more than 1.0mm and average grain size D50
Following particulate is formed, and the mass ratio of the coarse grain and particulate is 85~60 mass % and 15~40 mass %.
As described above, in the past, as float tank top component, in the sintered body of alumina silica base, mainly make
With the sintered body of sillimanite base.The sintered body of so-called sillimanite base, burnt using the high oxidation aluminum of the higher raw material of purity
One kind of brick is tied, as crystalline phase, mullite, corundum, cristobalite are mixed.
In the crystalline phase of alumina silica base sintered body, high temperature ring of the corundum more than 1200 DEG C as aluminum oxide
In use, can gradually be plastically deformed under border.On the other hand, phase transfer (phase can be caused at temperature of the cristobalite below 1400 DEG C
Become) and be changed into tridymite, induce because of Volume Changes and caused by rupture.Therefore, the largely sintered body meeting containing these crystalline phases
The deformation of creep is produced due to the generation for being plastically deformed, rupturing.
On the other hand, mullite uses under more than 1200 DEG C of hot environment, will not also cause plastic deformation, phase
Shift (phase transformation).Therefore, more than the 90 mass % of the crystalline phase of alumina silica base sintered body are the present invention of mullite phase
Float tank top component, used under more than 1200 DEG C of hot environment, be also less likely to occur because plastic deformation, phase turn
Move the rupture caused by Volume Changes caused by (phase transformation).Therefore, the deformation of creep is few.
It should be noted that detailed content is as described later, float tank top component of the invention is by average grain size
Two kinds of different alumina silica base sintered bodies (coarse grain, particulate) are formed.Both alumina silica bases sinter
More than the 90 mass % of the respective crystalline phase of body are mullite phase.
If mullite phase ratio shared in the crystalline phase of alumina silica base sintered body is less than 90 mass %,
The plastic deformation due to the crystalline phase (corundum, cristobalite) beyond mullite phase, body caused by phase transfer (phase in version) can then occur
Rupture caused by product change, so as to which the deformation of creep becomes big.
The present invention float tank top component can be containing alumina silica base sintered body the mass % of crystalline phase 10 with
Under mullite phase beyond crystalline phase, i.e. corundum and cristobalite.In this case, the crystalline phase beyond mullite phase can be
Any crystalline phase in corundum and cristobalite.But in both, within the temperature range of corundum is more than 1200 DEG C in use,
The deformation of creep will not occur, therefore in both, the content ratio of preferably corundum is high.
In float tank top component in the mode of the present invention, mullite mutually burns in alumina silica base
Shared ratio is more preferably more than 95 mass % in the crystalline phase of knot body, more preferably more than 97 mass %.
In addition, when alumina silica base sintered body contains sodium oxide molybdena, potassium oxide, titanium oxide, iron oxide, at 900 DEG C
Silica (SiO when being used under hot environment above and in sintered body2) react and form glass phase.Glass as formation
During glass phase, sintered body softening, therefore the deformation of creep becomes big.Therefore, the alumina-silica used in float tank top component
In silicon substrate sintered body, the content of preferably these compositions is low.
The present invention a mode in float tank top component alumina silica base sintered body in sodium oxide molybdena,
Potassium oxide, titanium oxide, total content of iron oxide are below 2 mass %, therefore under more than 1200 DEG C of hot environment
In use, sintered body does not also soften, the deformation of creep is few.
As described above, the float tank top component of the present invention is by two kinds of different alumina-silicas of average grain size
Silicon substrate sintered body (coarse grain, particulate) is formed.Both the respective sodium oxide molybdena of alumina silica base sintered body, potassium oxide, oxygen
Change titanium, total content of iron oxide is below 2 mass %.
The present invention a mode in float tank top component alumina silica base sintered body in sodium oxide molybdena,
Potassium oxide, titanium oxide, total content of iron oxide are more preferably below 1.5 mass %, more preferably below 1 mass %.
The float tank top component of the present invention is by each self-contained alumina silica base sintered body, average crystal grain chi
The particulate that the coarse grain and average grain size D50 that very little D50 is more than 1.0mm are below 0.1mm is formed.
Manufacture float tank top component as block alumina silica base sintered body when, due to sintering when
Size changing rate is difficult to produce the reasons such as anisotropy, therefore in the raw material of sintered body, it is few usually using size distribution,
That is, particle diameter particle uniform to a certain degree.As a result, form manufactured block alumina silica base sintered body
The size distribution of crystal grain is few, i.e. crystallite dimension is uniform to a certain degree.
But the size distribution for forming the crystal grain of block alumina silica base sintered body is few, i.e. crystallite dimension one
Determine degree it is uniform when, the problem of following be present.
Form the crystal grain of block alumina silica base sintered body whole crystallite dimensions it is all larger when, in intercrystalline
Produce space.As a result, the mutual combination of crystal grain becomes insufficient, the deformation of creep of alumina silica base sintered body
Become big.In addition, the creep strength of alumina silica base sintered body reduces.
On the other hand, form the crystal grain of block alumina silica base sintered body whole crystallite dimensions it is all smaller when,
Deformation, contraction when not producing space in intercrystalline, but sintering become big.As a result, produced inside sintered body potential
Rupture, it is possible to occur when in use damaged.
For the float tank top component of the present invention, the crystal grain of alumina silica base sintered body is formed by putting down
The particulate that the coarse grain and average grain size D50 that equal crystallite dimension D50 is more than 1.0mm are below 0.1mm is formed, therefore, solution
Above mentioned problem in the alumina silica base sintered body for having determined conventional.That is, by containing coarse grain, deformation during sintering, receive
Contracting will not become big, will not occur potentially to rupture inside sintered body.Thus, damaged possibility occurs when eliminating use.
On the other hand, particulate is filled with the space between coarse grain, therefore crystalline particle is bonded to each other strongly.Thus,
The deformation of creep of sintered body diminishes.In addition, the creep strength of sintered body improves.
But, in order to obtain the effect above, the ratio of coarse grain and particulate in alumina silica base sintered body needs
Meet particular range as described below.
In the float tank top component of the present invention, the quality of coarse grain and particulate in alumina silica base sintered body
Than being respectively 85~60 mass % and 15~40 mass %.
More than 40 mass %, (mass ratio of coarse grain is few to the mass ratio of particulate in alumina silica base sintered body
In 60 mass %) when, deformation during sintering, shrink and become big, yield rate during manufacture reduces.In addition, occur inside sintered body
Potential rupture, it is possible to damaged when in use.
On the other hand, the mass ratio of the particulate in alumina silica base sintered body is less than the 15 mass % (matter of coarse grain
Ratio is measured more than 85 mass %) when, the mutual combination of crystal grain is insufficient, and the deformation of creep of alumina silica base sintered body becomes
Greatly.In addition, the creep strength of alumina silica base sintered body reduces.
In float tank top component in the mode of the present invention, the coarse grain in alumina silica base sintered body
And the mass ratio of particulate is preferably respectively 75~70 mass % and 25~30 mass %.
The mass ratio of coarse grain and particulate meets that the alumina silica base sintered body of above range can be according to following
Order manufactures.
The mullite particle A and average grain diameter D50 that preparation average grain diameter D50 is more than 1.0mm are not coming for below 0.1mm
Stone particle B.Mullite A, B sodium oxide molybdena, potassium oxide, titanium oxide, total content of iron oxide are below 2 mass %.
Coordinate mullite particle A and mullite particle B, it is 85~60 mass % and 15~40 matter to make their mass ratio
Measure %.Obtained complex is filled into the mould of the regulation shape consistent with the shape of float tank top component, is heated to
Such as more than 1500 DEG C of defined temperature is sintered.
As mullite particle A, B, preferably using electrofused mullite particle, because sodium oxide molybdena, potassium oxide, titanium oxide, oxygen
The content for changing the impurity such as iron is low.So-called electrofused mullite particle, it is that electrofused mullite is crushed to obtained from defined size
Particle.
Float tank top component in the mode of the present invention inhibits deformation of creep when using in high temperature environments.
In this manual, the index of the deformation of creep is used as using the creep speed in bending creep test.Specifically, described later
The creep speed in bending creep test (1300 DEG C, load 3.5MPa) described in embodiment is preferably 1 × 10-8/ below s,
More preferably 0.5 × 10-8/ below s, more preferably 0.1 × 10-8/ below s.
In addition, the creep when float tank top component in an embodiment of the invention uses in high temperature environments is strong
Degree is high.Specifically, 1000 hours creep strengths in the bending creep test (1300 DEG C) described in embodiment described later
Preferably more than 6MPa, more preferably more than 8MPa, more preferably more than 10MPa.
The maximum stress on float tank top component is applied to during use according to its use condition, the design of peripheral member and
Difference, it is about 0.1~about 1.0MPa.Therefore the float tank top component in the mode of the present invention during use for being applied
Stress there is enough creep strengths.
The size and shape of float tank top component in the mode of the present invention can be according to each in float tank top cover
Configuration of part etc. is suitably adjusted.Under enumerating one for example：Long 30cm or so, wide 5~8cm, high 6~10cm cuboid
Shape.At the both ends of float tank top component, the groove for engaging with suspension bracket is provided with.
Next, illustrated for the float sheet glass manufacturing apparatus in the mode of the present invention.
Float sheet glass manufacturing apparatus in the mode of the present invention has：Internally accommodate the float tank of molten tin
With the float tank top cover set on the top of the float tank.The float tank top cover is made up of the float tank top component of the present invention.
As described above, the float tank top component of the present invention inhibits deformation of creep when using in high temperature environments, and
And creep strength when using in high temperature environments is high.
Therefore, the worry that no float tank top component departs from and fallen from suspension bracket, can be long-term use of.
In addition, the above-mentioned characteristic of the float tank top component of the present invention, i.e. inhibit compacted when using in high temperature environments
Creep strength when deforming, and using in high temperature environments is high, and this is in the case where improving the atmosphere temperature in float tank
More effectively.
Therefore, the float sheet glass manufacturing apparatus in a mode of the invention is more preferably used for situations below：Make
During glass manufacture plate glass higher with viscosity, although or manufacture when forming the glass of identical thinner thickness.
As the former concrete example, can enumerate in the production process for including the process for being exposed to high temperature using being supplied in
The situation of the high glass manufacture plate glass of the viscosity such as high-precision display glass.
As the concrete example of the latter, can enumerate：Manufacture thickness is below 0.7mm, more preferably below 0.5mm, enters one
Step is preferably the situation of below 0.3mm plate glass.
The present invention a mode in float flat glass manufacture method be：It is being referred to as the receiving molten tin of float tank
Bath in import melten glass, melten glass is continuously transported from upstream towards downstream in molten tin, while it is molten to cool down this
Melt tin, while it is discharged from float tank, thus manufacture plate glass.Float flat glass in the mode of the present invention
Manufacture method in, due to using the present invention above-mentioned float tank top component, so can for a long time and stably manufacture.
Embodiment
Hereinafter, the present invention is described in detail according to embodiment, but the present invention is not limited to these embodiments.
(embodiment 1, comparative example 1,2)
As the sample of bending creep test, prepare the alumina silica base sintered body formed shown in following table.Examination
It is 25mm × 15mm × 100mm to test with the size of sample.
It should be noted that alumina silica base sintered body is not to come average grain diameter D50 for more than 1.0mm
Stone particle A and average grain diameter D50 is that the material that below 0.1mm mullite particle B is coordinated with defined mixing ratio is heated to
More than 1500 DEG C are sintered and obtain.Mullite particle A, B be by electrofused mullite it is broken and according to its particle diameter be divided into not come
Stone A, B.Therefore, form alumina silica base sintered body coarse grain (average grain size D50 be more than 1.0mm) and carefully
Grain (average grain size D50 is below 0.1mm) and the ratio of the mullite phase in crystalline phase and the content of impurity are identical number
Value.It should be noted that the impurity content in table is sodium oxide molybdena, potassium oxide, titanium oxide, total content of iron oxide.
Table 1
In bending creep test, load is set as 2.5MPa, 3.5MPa, creep speed is determined at 1300 DEG C of temperature
(/s).Show the result in following table.
Table 2
| Load | 2.5MPa | 3.5MPa |
| Embodiment 1 | 1.3×10-10 | 3.7×10-9 |
| Comparative example 1 | 1.1×10-7 | 1.4×10-6 |
| Comparative example 2 | 1.0×10-6 | Immediately fracture |
In addition, in bending creep test, the relation of load and rupture time is evaluated.Show the result in Fig. 1.
From the result of table 2 it has been confirmed that the oxygen for the embodiment 1 that the ratio of the mullite phase in crystalline phase is more than 90 mass %
Change aluminium-silica sintered body, with the aluminum oxide of the comparative example 1,2 of the ratio of the mullite phase in crystalline phase less than 90 mass %-
Silica sintered body is compared, and creep speed is low, and the deformation of creep is few.In addition, from Fig. 1 result it has been confirmed that the oxygen of embodiment 1
Change aluminium-silica sintered body, with the aluminum oxide of the comparative example 1,2 of the ratio of the mullite phase in crystalline phase less than 90 mass %-
Silica sintered body is compared, and creep speed is low, and the deformation of creep is few.In addition, from Fig. 1 result it has been confirmed that the oxygen of embodiment
Change aluminium-silica sintered body, compared with the alumina silica sintered body of comparative example 1,2, creep strength is high.
(embodiment 2, comparative example 3)
In example 2, float tank top is made using the alumina silica sintered body formed similarly to Example 1
The lid component.It is disposed on existing float tank top cover.In addition, as comparative example 3, conventional sillimanite base refractory brick is set
As float tank top component.The size and shape of float tank top component is as previously described.In addition, using when be applied to float tank
Maximum stress on top component is as previously described.Atmosphere temperature in float tank is set as 1300 DEG C, can after 4 weeks
Confirm that the central part of the refractory brick of comparative example 3 is bent downwardly by visual observation, there occurs the deformation of creep.In addition, at the bottom of refractory brick
Many crackles are produced on face.On the other hand, in the float tank top component of embodiment 2, be not found the deformation of creep and
The generation of crackle.
The application is used as with reference to simultaneously based on Japanese patent application 2013-087224 filed in 18 days April in 2013, its content
Enter herein.
Claims (9)
1. a kind of float tank top component, wherein,
The top component includes alumina silica base sintered body, each crystalline substance in the alumina silica base sintered body
More than the 90 mass % of phase be mullite phase and sodium oxide molybdena, potassium oxide, titanium oxide, total content of iron oxide be 2 mass % with
Under,
The float tank top component is by the average grain size D50 coarse grain for being more than 1.0mm and average grain size D50
Below 0.1mm particulate is formed, and the coarse grain and the respective mass ratio of the particulate are 85~60 mass % and 15~40 matter
Measure %.
2. float tank top component as claimed in claim 1, wherein,
Tried with 25mm × 15mm × 100mm sample size, the bending creep carried out under conditions of 1300 DEG C, load 3.5MPa
Creep speed in testing is 1 × 10-8/ below s.
3. float tank top component as claimed in claim 1 or 2, wherein,
With 1000 in 25mm × 15mm × 100mm sample size, the bending creep test carried out under conditions of 1300 DEG C
Hour creep strength is more than 6MPa.
4. float tank top component as claimed in claim 1 or 2, wherein,
The coarse grain and particulate contain mullite particle, and the mullite particle is electrofused mullite particle.
5. float tank top component as claimed in claim 1 or 2, wherein,
In the crystalline phase, the containing ratio of the crystalline phase beyond mullite phase, i.e. corundum and cristobalite is relative to alumina-silica
The crystalline phase of silicon substrate sintered body is below 10 mass %.
6. float tank top component as claimed in claim 1 or 2, wherein,
Crystalline phase beyond the mullite phase is any crystalline phase of corundum and cristobalite, Liang Zhezhong, and the content ratio of corundum is high.
7. a kind of float sheet glass manufacturing apparatus, it, which has, internally accommodates the float tank of molten tin and is arranged at the floating throwing
The float tank top cover on the top of kiln, it is characterised in that
The float tank top cover is made up of float tank top component according to any one of claims 1 to 6.
8. a kind of float flat glass manufacture method, it includes the float sheet glass manufacturing apparatus described in usage right requirement 7
Make float flat glass.
9. float flat glass manufacture method as claimed in claim 8, wherein,
The float flat glass is display float glass, and the thickness of the float glass is below 0.7mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-087224 | 2013-04-18 | ||
| JP2013087224A JP2016117595A (en) | 2013-04-18 | 2013-04-18 | Float bath roof member and apparatus for manufacturing float glass plate using the same |
| PCT/JP2014/060738 WO2014171459A1 (en) | 2013-04-18 | 2014-04-15 | Float bath roof member, float plate glass production device using same, and method for producing float plate glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105339315A CN105339315A (en) | 2016-02-17 |
| CN105339315B true CN105339315B (en) | 2017-12-01 |
Family
ID=51731397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480022193.9A Expired - Fee Related CN105339315B (en) | 2013-04-18 | 2014-04-15 | Float tank top component, float sheet glass manufacturing apparatus and float flat glass manufacture method using it |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2016117595A (en) |
| KR (1) | KR20160002774A (en) |
| CN (1) | CN105339315B (en) |
| WO (1) | WO2014171459A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201943674A (en) * | 2018-04-06 | 2019-11-16 | 美商康寧公司 | Purified aluminosilicate refractory compositions |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3217177B2 (en) | 1993-02-12 | 2001-10-09 | 旭硝子株式会社 | Float glass manufacturing equipment |
| JP2001139336A (en) | 1999-11-08 | 2001-05-22 | Nippon Sheet Glass Co Ltd | Floating bath roof and hanging brick for the same |
| EP1702894A4 (en) * | 2003-12-25 | 2009-08-26 | Asahi Glass Co Ltd | Float bath and float manufacturing process |
| CN101056827B (en) * | 2004-11-09 | 2010-05-05 | 旭硝子株式会社 | Float bath bottom refractory brick and process for its production |
| CN102596850B (en) * | 2009-11-06 | 2014-04-09 | 三井金属矿业株式会社 | Mullite ceramic and method for producing same |
| KR101377542B1 (en) * | 2010-06-01 | 2014-03-26 | 주식회사 엘지화학 | Float bath for manufacturing glass and float glass forming method |
-
2013
- 2013-04-18 JP JP2013087224A patent/JP2016117595A/en active Pending
-
2014
- 2014-04-15 CN CN201480022193.9A patent/CN105339315B/en not_active Expired - Fee Related
- 2014-04-15 WO PCT/JP2014/060738 patent/WO2014171459A1/en active Application Filing
- 2014-04-15 KR KR1020157029617A patent/KR20160002774A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016117595A (en) | 2016-06-30 |
| KR20160002774A (en) | 2016-01-08 |
| WO2014171459A1 (en) | 2014-10-23 |
| CN105339315A (en) | 2016-02-17 |
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