CN104496155B - Float glass making process, float glass and its application - Google Patents
Float glass making process, float glass and its application Download PDFInfo
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- CN104496155B CN104496155B CN201410690267.8A CN201410690267A CN104496155B CN 104496155 B CN104496155 B CN 104496155B CN 201410690267 A CN201410690267 A CN 201410690267A CN 104496155 B CN104496155 B CN 104496155B
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- 239000005329 float glass Substances 0.000 title claims abstract description 51
- 238000005816 glass manufacturing process Methods 0.000 title claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 86
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 239000002184 metal Substances 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 8
- 230000006641 stabilisation Effects 0.000 claims description 4
- 238000011105 stabilization Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 238000006124 Pilkington process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- C03B18/04—Changing or regulating the dimensions of the molten glass ribbon
- C03B18/06—Changing or regulating the dimensions of the molten glass ribbon using mechanical means, e.g. restrictor bars, edge rollers
-
- 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
- C03B18/18—Controlling or regulating the temperature of the float bath; Composition or purification of the float bath
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Glass Compositions (AREA)
Abstract
The present invention discloses a kind of glass-making processes, glass and its application, more particularly to a kind of float glass making process, float glass and its application.The Mini types float glass making process is to use to carry out electrical heating in bath of molten metal slot space subregion, and different computer heating controls is carried out to different subregions.The application float glass making process is preparing the less glass of target thickness, such as can effectively control each part thickness difference of its glass to be evenly distributed during glass that target thickness is 0.7mm, and the difference range of maximum thickness and minimum value is 0mm to 0.04mm.
Description
Technical field
The present invention relates to a kind of glass-making processes, glass and its application, more particularly to a kind of float glass making process,
Float glass and its application.
Background technology
In float glass manufacturing process, certain temperature, the uniform melten glass liquid of composition are continuously fed and filled with
Molten metal liquid surface, using the surface tension collective effect of the gravity of glass metal, molten metal bath and glass to realize glass
Glass liquid shakeouts, then the effect by edge machine horizontal force, main transmission longitudinal direction thinness pulling force, to realize that the drawing of glass plate is thin.
In whole molten metal bath upper space, a number of Elema electric heater is installed glass is heated, control production
The required glass plate with one fixed width, thickness and thickness difference.
The content of the invention
The applicant has found by substantial amounts of research, is had a problem that in current such technical process, in recent years, right
Higher requirement is proposed in the thickness difference of the ultra-thin glass of float process.Problems be present in control sheet thickness difference；Glass
Glass plate is thinner to be more difficult to control thickness difference；In addition the edge machine logarithm that thinning process uses is more and more, makes glass in molten tin bath
Transverse temperature difference increases；Elema is certain in upper space installation number and the efficiency of heating surface is not fully utilized, and glass is being spread out
Put down, polish, drawing and can not control the transverse temperature of glass plate poor in thin, forming process very well.Therefore, floating process production is utilized
The generally existing problems with of ultra-thin flat glass：Thickness difference is larger, it is difficult to meets customer requirement.
In view of this, the present invention provides a kind of float glass making process, and the float glass making process is preparing mesh
Mark the less glass of thickness, such as target thickness be 0.7mm glass when can effectively control each part thickness difference of its glass
Cloth is uniform, and the difference range of maximum thickness and minimum value is 0mm to 0.04mm.
To solve above technical problem, the technical scheme of first aspect provided by the invention is a kind of ultrathin float glass
Manufacture method, comprise the following steps,
The melting flowed out from runner is continuously fed to the horizontal bath face for the molten metal bath for accommodating molten metal
Glass and form glass tape；Glass tape since contacting molten metal, and to leer direction flow during, glass band edge
Undergo along width and gradually expand, be gradually reduced to edge width stabilization, form preforming glass tape；
Glass tape flow direction is horizontal direction, and edge machine, first pair of edge machine placement location are provided with the both sides of glass tape
Region front end horizontal partition, blueline is labeled as D1；Last region rear end horizontal partition to edge machine placement location, point
Area's wire tag is D2；D1 lines are close to runner, and for D2 lines close to leer, molten metal bath region division is three with D2 lines by D1 lines
The thin area in individual region, respectively prestretching, La Bao areas and glass tape shaping cooling zone, the thin area of prestretching are cold close to runner, glass tape shaping
But area is close to leer；
Three regions are divided into the area of edge two and middle region in a longitudinal direction respectively；The area of edge two is located at middle part
Longitudinal both sides in area；The longitudinally wide 70%- longitudinally wide for molten metal bath region corresponding position of the middle region
90%.
Having heaters is set in the molten metal bath region, and the heater is apart from tin liquid level d：450mm>
d>250mm；The heating power W of the thin area's heater of prestretching is not more than 40Kw/m2；The heating power W of La Bao areas heater is not
More than 45Kw/m2；The heating power W of shaping cooling zone heater is not more than 20Kw/m2；Molten metal bath zone heater
Heating mean power W is not more than 38Kw/m2；
The heating power in the area of edge two in the thin area of prestretching is more than more than the 50% of the heating power of middle region；
Edge machine directly acts on the fringe region of glass tape in La Bao areas；
The heating power in the area of edge two in the La Bao areas is consistent with corresponding middle region heating power；The edge two in La Bao areas
The 40%-50% of the heating power of the middle region in the heating power Zhan Labao areas in area.
Preferably, the middle region in the La Bao areas is divided into different temperatures area by Transverse Temperature Gradient, and humidity province is at least 5
It is individual.
Preferably, the edge Liang Qu of the glass tape shaping cooling zone is consistent with the heating power of its middle region.
Preferably, having heaters is set in the molten metal bath region, and the heater is apart from tin liquid level d
For：400mm>d>300mm；The heating mean power W of the molten metal bath zone heater is not more than 38Kw/m2。
Preferably, the heating power in the area of edge two in the thin area of the prestretching be more than middle region heating power 60% with
On.
Preferably, the area of edge two in the La Bao areas is divided into two cells respectively, and the heating power of two cells is its middle part
The 50% of area.
Preferably, the difference range of gained float glass maximum thickness and minimum value is 0mm to 0.04mm.
The application also provides the technical scheme of second aspect, i.e., foregoing any described float glass making process is prepared into
The float glass arrived, the maximum thickness of the float glass and the difference range of minimum value are 0mm to 0.04mm, and glass
Thickness be 0.7mm to 1.1mm.
The application also provides the technical scheme of the third aspect, i.e., foregoing any described ultrathin float glass making process
Application on thin float glass is prepared, the thickness of the thin float glass is 0.7mm to 1.1mm.
Compared with prior art, its detailed description is as follows by the application：
Herein described ultrathin float glass making process mainly uses following steps：
The melting flowed out from runner is continuously fed to the horizontal bath face for the molten metal bath for accommodating molten metal
Glass and form glass tape；Glass tape since contacting molten metal, and to leer direction flow during, glass band edge
Undergo along width and gradually expand, be gradually reduced to edge width stabilization, form preforming glass tape；
Glass tape flow direction is horizontal direction, and edge machine, first pair of edge machine placement location are provided with the both sides of glass tape
Region front end horizontal partition, blueline is labeled as D1；Last region rear end horizontal partition to edge machine placement location, point
Area's wire tag is D2；D1 lines are close to runner, and for D2 lines close to leer, molten metal bath region division is three with D2 lines by D1 lines
The thin area in individual region, respectively prestretching, La Bao areas and glass tape shaping cooling zone, the thin area of prestretching are cold close to runner, glass tape shaping
But area is close to leer；
Three regions are divided into the area of edge two and middle region in a longitudinal direction respectively；The area of edge two is located at middle part
Longitudinal both sides in area；The longitudinally wide 70%- longitudinally wide for molten metal bath region corresponding position of the middle region
90%.
Having heaters is set in the molten metal bath region, and the heater is apart from tin liquid level d：450mm>
d>250mm；The heating power W of the thin area's heater of prestretching is not more than 40Kw/m2；The heating power W of La Bao areas heater is not
More than 45Kw/m2；The heating power W of shaping cooling zone heater is not more than 20Kw/m2；Molten metal bath zone heater
Heating mean power W is not more than 38Kw/m2；
The heating power in the area of edge two in the thin area of prestretching is more than more than the 50% of the heating power of middle region；
Edge machine directly acts on the fringe region of glass tape in La Bao areas；
The heating power in the area of edge two in the La Bao areas is consistent with corresponding middle region heating power；The edge two in La Bao areas
The 40%-50% of the heating power of the middle region in the heating power Zhan Labao areas in area.
The applicant, can be effectively to floating by using above-mentioned float glass making process by largely studying discovery
The temperature of glass tape control effectively in method Improving Glass Manufacturing Processes, so as to which the thickness of the effectively final gained glass tape of control divides
The difference range of cloth, i.e. maximum thickness and minimum value is can be controlled within 0mm to 0.04mm；Herein described float glass system
The method of making, which is particularly suitable for use in, manufactures thin float glass, and because the glass tape of float process is thinner, its thickness distribution is more difficult to control,
Therefore it finds particular application to the ultrathin float glass that productive target thickness is 0.7mm to 1.1mm.
Brief description of the drawings
Fig. 1 is the sectional view of molten metal bath in the application embodiment float glass making process；
Fig. 2 is the subregion schematic diagram in bath of molten metal face in the application embodiment float glass making process；
Fig. 3 is that the subregion of bath of molten metal face and glass tape is illustrated in the application embodiment float glass making process
Figure.
Embodiment
The application float glass making process, referring to accompanying drawing 1, Fig. 2, Fig. 3, comprise the following steps,
Continuously fed to the horizontal bath face for the molten metal bath 1 for accommodating molten metal 6 flowed out from runner it is molten
Melt glass and form glass tape 8；Glass tape 8 since contacting molten metal 6, and to leer direction flow during, glass
The edge width of glass band 8 experience gradually expands, and is gradually reduced to edge width stabilization, forms preforming glass tape；
The flow direction of glass tape 8 is horizontal direction, and edge machine 7 is provided with the both sides of glass tape 8, and first pair of edge machine places position
The region front end horizontal partition put, blueline are labeled as D1；Last region rear end horizontal partition to edge machine placement location,
Blueline is labeled as D2；Molten metal bath region division is by D1 lines with D2 lines close to leer, D1 lines close to runner, D2 lines
The thin area A in three regions, respectively prestretching, La Bao areas B and glass tape shaping cooling zone C, the thin area A of prestretching is close to runner, glass tape
Cooling zone C is molded close to leer；
Three regions are divided into the area of edge two and middle region in a longitudinal direction respectively；The area of edge two is located at middle part
Longitudinal both sides in area；The longitudinally wide 70%- longitudinally wide for molten metal bath region corresponding position of the middle region
90%.
Having heaters 5 is set in the molten metal bath region, and the heater 5 is apart from tin liquid level d：
450mm>d>250mm；The heating power W of the thin area A heaters of prestretching is not more than 40Kw/m2；The heating of La Bao areas B heaters
Power W is not more than 45Kw/m2；The heating power W of shaping cooling zone C heaters is not more than 20Kw/m2；Molten metal bath region
The heating mean power W of heater is not more than 38Kw/m2；
More than the 50% of heating power of the area A1 of edge two of the thin area A of the prestretching heating power more than middle region A2；
Edge machine 7 directly acts on the fringe region of glass tape in La Bao areas B；
The area B1 of edge two of La Bao areas B heating power is consistent with corresponding middle region B2 heating powers；La Bao areas B's
The 40%-50% of the area B1 of edge two heating power Zhan Labao area B middle region B2 heating power.
C1 shown in figure is the area of edge two that glass tape is molded cooling zone, and C2 is the middle region that glass tape is molded cooling zone.
In order that those skilled in the art more fully understands technical scheme, with reference to specific embodiment pair
The present invention is described in further detail.
Embodiment 1 --- the glass of manufacture different target thickness
The float glass of different target thickness is manufactured using foregoing float glass making process, and with using existing float glass process
Glass prepared by glass-making processes is compared, and determines each parameter, the thickness d of glass, the maximum thickness of glass everywhere
With the difference D of minimum value.
Existing float glass making process is control 1；Control 1 is that glass metal upper space is set in molten metal bath
Heater, the heater are evenly distributed, and each heater heating power is essentially identical.
Gained glass testing result see the table below.
Table 1 --- the determination data of different target thickness glass
Embodiment 2 --- manufacture same target thickness glass, the thin area's different heating power setting of prestretching
It is applied to the float glass for manufacturing same target thickness using foregoing the application float glass making process, target is thick
Angle value is respectively 0.7mm to 1.1mm；Different variables are the heating of the thin area's internal heater of prestretching described herein in manufacture method
The set-up mode of power, remaining method parameter use same range with foregoing the application float glass making process.
Gained glass testing result see the table below.
Table 2 --- different heating power setting in the thin area of prestretching
Embodiment 3 --- manufacture same target thickness glass, the different heating power setting of La Bao areas
It is applied to the float glass for manufacturing same target thickness using foregoing the application float glass making process, target is thick
Angle value is respectively 0.7mm to 1.1mm；Different variables are the heating work(of La Bao areas described herein internal heater in manufacture method
The set-up mode of rate, remaining method parameter use same range with foregoing the application float glass making process.
Gained glass testing result see the table below.
Table 3 --- different heating power setting in La Bao areas
Embodiment 4 --- same target thickness glass is manufactured, molten metal bath internal heater is different high apart from tin liquor face
The setting of degree and heating power
It is applied to the float glass for manufacturing same target thickness using foregoing the application float glass making process, target is thick
Angle value is respectively 0.7mm to 1.1mm；In manufacture method different variables be molten metal bath internal heater described herein away from
From tin liquor face different height and the set-up mode of heating power, remaining method parameter manufactures with foregoing the application float glass
Method uses same range.
Gained glass testing result see the table below.
Table 4 --- setting of the molten metal bath internal heater apart from tin liquid level and heating power
Analysis of experimental results：
1st, the ultra-thin float glass process of Mini types, glass tape make the thickness difference of glass improve in edge machine area edge electrical heating subdivision.
2nd, the ultra-thin float glass process of Mini types, molten metal bath installation Elema electrical heating away from glass plate distance should suitably from
Closely, it should be less than 450mm and be more than 250mm.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of ultrathin float glass making process, comprises the following steps,
The melten glass flowed out from runner is continuously fed to the horizontal bath face for the molten metal bath for accommodating molten metal
And form glass tape；Glass tape since contacting molten metal, and to leer direction flow during, glass band edge is wide
Degree experience gradually expands, and is gradually reduced to edge width stabilization, forms preforming glass tape；It is characterized in that：
Glass tape flow direction is horizontal direction, and edge machine, the area of first pair of edge machine placement location are provided with the both sides of glass tape
Domain front end horizontal partition, blueline are labeled as D1；Last region rear end horizontal partition to edge machine placement location, blueline
Labeled as D2；D1 lines are close to runner, and for D2 lines close to leer, molten metal bath region division is three areas with D2 lines by D1 lines
The thin area in domain, respectively prestretching, La Bao areas and glass tape shaping cooling zone, the thin area of prestretching is close to runner, glass tape shaping cooling zone
Close to leer；
Three regions are divided into the area of edge two and middle region in a longitudinal direction respectively；The area of edge two is located at middle region
Longitudinal both sides；The longitudinally wide 70%-90% longitudinally wide for molten metal bath region corresponding position of the middle region；
Having heaters is set in the molten metal bath region, and the heater is apart from tin liquid level d：450mm>d>
250mm；The heating power W of the thin area's heater of prestretching is not more than 40Kw/m2；The heating power W of La Bao areas heater is little
In 45Kw/m2；The heating power W of shaping cooling zone heater is not more than 20Kw/m2；Molten metal bath zone heater adds
Hot mean power W is not more than 38Kw/m2；
The heating power in the area of edge two in the thin area of prestretching is more than more than the 50% of the heating power of middle region；
Edge machine directly acts on the fringe region of glass tape in La Bao areas；
The heating power in the area of edge two in the La Bao areas is consistent with corresponding middle region heating power；The area of edge two in La Bao areas
The 40%-50% of the heating power of the middle region in heating power Zhan Labao areas.
2. float glass making process according to claim 1, it is characterised in that：The side of the glass tape shaping cooling zone
Bu Liang areas are consistent with the heating power of its middle region.
3. float glass making process according to claim 1, it is characterised in that：Set in the molten metal bath region
Heater is equipped with, the heater is apart from tin liquid level d：400mm>d>300mm.
4. float glass making process according to claim 1, it is characterised in that：The area of edge two in the thin area of prestretching
Heating power is more than more than the 60% of the heating power of middle region.
5. float glass making process according to claim 1, it is characterised in that：The area of edge two difference in the La Bao areas
Two cells are divided into, the heating power of two cells is the 50% of its middle region.
6. float glass making process according to claim 1, it is characterised in that：Gained float glass maximum thickness with
The difference range of minimum value is 0mm to 0.04mm.
7. the ultrathin float glass making process in claim 1-6 described in any claim is preparing thin float glass
On application, it is characterised in that the thickness of the thin float glass is 0.7mm to 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690267.8A CN104496155B (en) | 2014-11-25 | 2014-11-25 | Float glass making process, float glass and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690267.8A CN104496155B (en) | 2014-11-25 | 2014-11-25 | Float glass making process, float glass and its application |
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| Publication Number | Publication Date |
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| CN104496155A CN104496155A (en) | 2015-04-08 |
| CN104496155B true CN104496155B (en) | 2018-03-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108383359B (en) * | 2018-04-28 | 2024-07-30 | 秦皇岛玻璃工业研究设计院有限公司 | Flexible glass forming equipment and forming method |
| CN109052931A (en) * | 2018-09-11 | 2018-12-21 | 台玻安徽玻璃有限公司 | A kind of production method, glass and the application of highly endothermic thin float glass |
| CN110104940A (en) * | 2019-05-14 | 2019-08-09 | 中国建材国际工程集团有限公司 | A kind of tin groove structure |
| CN110304813A (en) * | 2019-07-09 | 2019-10-08 | 四川旭虹光电科技有限公司 | Float shaping automatic gauge control system and method |
| CN114031271A (en) * | 2021-11-09 | 2022-02-11 | 河南省中联玻璃有限责任公司 | Method for preparing ultra-thin automobile glass based on float production line |
| CN115745379A (en) * | 2022-12-29 | 2023-03-07 | 蚌埠中光电科技有限公司 | Method for laying high-end electric float glass tin bath electric heating device |
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| JP3217176B2 (en) * | 1993-02-05 | 2001-10-09 | 旭硝子株式会社 | Method and apparatus for manufacturing float glass |
| FI96764C (en) * | 1995-01-10 | 1996-08-26 | Tamglass Eng Oy | Method of heating hardenable or heat-reinforceable glass sheets |
| DE102004052568B4 (en) * | 2004-10-29 | 2012-02-02 | Schott Ag | Thin glass substrate and method of making thin glass |
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