CN1412135A - Forming device of ultrathick float glass and its production process - Google Patents
Forming device of ultrathick float glass and its production process Download PDFInfo
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- CN1412135A CN1412135A CN 02152099 CN02152099A CN1412135A CN 1412135 A CN1412135 A CN 1412135A CN 02152099 CN02152099 CN 02152099 CN 02152099 A CN02152099 A CN 02152099A CN 1412135 A CN1412135 A CN 1412135A
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Abstract
The present invention relates to a forming equipment of superthick float glass and its production process. It is characterized by that in the high-temp. zone to tin tank of superthick foal glass forming equipment 6-12 pairs of edge-holding machines are set, and the distance interval of every pair of edge-holding machines is 1.0-3.0 m; when the superthick glass is produced, the angle range formed by axial moving direction of every edge-holding machine and vertical direction of axis of tin tank and heating power of every edge heating zone and subedge heating zone in the high-temp. zone can be regulated, so that the invented superthick foat glass whose thickness can be 19 mm and more than it can be produced, and thickness errors can be controlled in plus or minus 0.3 mm, and its finished product rate can be up to above 80%.
Description
Technical field:
The present invention relates to a kind of shaped device and production technique of producing the production unit and the production technique, particularly super thick float glass of float glass.
Background technology:
The forming principle of float glass, be that high temp glass liquid continuously flows into the metallic tin liquid level under the situation of feed glass flow quantity, glass metal is under the acting in conjunction of the buoyancy of gravity, surface tension, tin liquor and drawing gravitation, form the glass ribbon of certain equilibrium thickness, glass ribbon cools off gradually in traveling process, solidifies, pull out from the tin bath outlet end at last, enter annealing furnace then.For soda lime glass, this equilibrium thickness is about 6mm.Production is less than the thin glass of equilibrium thickness, generally be to adopt auxiliary direct drawing method, promptly by the edge machine of different quantities, under the situation that the annealing furnace pull speed improves, edge machine is adjusted into its axis to be compared with molten tin bath axis vertical line, sweptback slightly state, as shown in fig. 1, it is positive-angle, the edge machine head is rotated with the linear speed near glass ribbon speed on glass metal, glass ribbon is produced a kind of horizontal stroke, vertical drawing gravitation, thereby overcome the convergent force of glass ribbon, reach and make the thin and constant purpose of glass ribbon width of glass ribbon exhibition at width.
Production is adopted oppositely auxiliary direct drawing method or barricade method usually greater than the heavy sheet glass of equilibrium thickness.Oppositely auxiliary direct drawing method is opposite with auxiliary direct drawing method, the axis of edge machine turns forward slightly for the vertical line of molten tin bath axis, as shown in Figure 2, i.e. and negative angle, make the edge machine head produce a kind of horizontal compression power, thereby be piled into required thickness glass ribbon.In United States Patent (USP) 4157908 and the French Patent 2064454 this method there is certain description, but its master is stressed that edge machine head gear structure and places the effect of angle to float shaping thickness, parameters such as head speed of rotation have been ignored to the make thinner effect of directed control aspect of glass, and ulking thickness simply, thereby can not produce the standardized sheet glass of thickness difference.Therefore also just on gauge control, be restricted, can only be fit to the thick glass production of 8～12mm.
For greater than 12mm, particularly the production method of the super thick float glass of 19mm all uses the barricade method to produce now.The described barricade method of English Patent 1123223,1270933 and Chinese patent 1096770A is produced heavy sheet glass, exactly glass metal is forced to be limited in two graphite block scopes that are about the glass ribbon original plate width of being separated by, glass metal can not be spread out again, thereby reach the purpose that increases thickness.There is the barrier wall structure complexity in heavy sheet glass but the barricade method is produced 19mm, needs improve accordingly tin groove structure, increases a large amount of utility appliance, and tin liquor is polluted aggravation when barricade is installed, and the molten tin bath operating mode is destroyed serious, needs to reduce the drawing amount.Produce with this method simultaneously, glass edges of boards portion easily produces crystallization, and thickness difference is bigger than normal, and is wayward, and production cost increases substantially.The glass ware forming synoptic diagram of the use aforesaid method that it is concrete as shown in Figure 3.
Technology contents:
The object of the present invention is to provide a kind of technology simple, production cost is low, the super thick float glass shaped device of production that can make full use of existing installation with and production technique.
The object of the present invention is achieved like this:
The shaped device of super thick float glass of the present invention, the special quantity that is provided with in molten tin bath high-temperature zone 1 is 6～12 pairs edge machine 2; The distance of described every pair of edge machine is spaced apart 1.0～3.0m; The axis traffic direction of each edge machine and the vertical line direction of molten tin bath axis form scope-20 °～20 ° angle; And be provided with water coolant bag 4 after being provided with the edge machine of molten tin bath high-temperature zone described.
The production technique of super thick float glass involved in the present invention is as follows:
A: at first determine parameters such as wide, the clean plate of sheet glass raw sheet is wide, tooth distance, pull speed, glass metal inflow temperature;
B: quantity is set is 6～12 pairs edge machine in described molten tin bath high-temperature zone, the distance of every pair of edge machine is spaced apart 1.0～3.0m, and the vertical line direction of the axis direction of each edge machine and molten tin bath axis forms 0 degree or negative angle, and angular range is at 0～20 °
C: in the high-temperature zone, the heating power in limit portion electrically heated district manys 10-50 kilowatt than the secondary boundary region electrical heating power, and inferior limit portion electrical heating power manys 10-50 kilowatt than the heating power of central section; Many 10-40 kilowatt and add power than the intermediate zone at the attached near part electrical heating power of tin bath outlet.
The present invention has farthest utilized in the existing installation in the molten tin bath inherent miscellaneous equipment as electric boosting, water cooler, finishes and piles up and the make thinner thickness of sheet glass of control.Present device transformation and processing method are simple, and the super thick float glass planeness of producing is good, and surperficial thickness is even, and the thickness difference is controlled at ± 0.3mm, and yield rate reaches more than 80%.
Border figure explanation:
Accompanying drawing 1 is a thin glass production shaping schematic view of the prior art of the present invention
Accompanying drawing 2 is that heavy sheet glass of the prior art of the present invention is produced shaping schematic view
Accompanying drawing 3 is that the barricade method of super heavy sheet glass of the prior art of the present invention is produced shaping schematic view
Accompanying drawing 4 is that super heavy sheet glass of the present invention is produced shaping schematic view
Accompanying drawing 5 is the horizontal form synoptic diagram of sheet thickness of the present invention
Embodiment:
Be embodiments of the invention with accompanying drawing 4,5 below, the present invention be further detailed:
The concrete implementation step of the present invention is as follows: at first according to the corresponding construction of drawing amount and molten tin bath, determine important parameters such as wide, the clean plate of sheet glass raw sheet is wide, tooth distance, pull speed, glass metal inflow temperature, make thinner earlier according to the feed glass plate again and afterwards amass thick principle of making thinner again, total logarithm of designing the edge machine use reaches matching factor each other to edge machine speed, angle, compression distance with each, will carry out rational Process configuration to the quantity and the riding position of auxiliary electrically heated power distribution, water coolant bag simultaneously.On this basis from the foot couple edge machine, from after successively each speed to edge machine, angle, compression distance are carried out the adjustment of phase targets value forward, after each circulation, if any certain the parking stall being appearred in edge machine excessively stretches out etc., immediately it is adjusted to ideal position, carries out the next round circulation subsequently again and adjust.The principle that this adjustment is followed is slightly repeatedly, after circulation is adjusted through several times, is generally 2～3 times, various parameters can be adjusted to the super heavy sheet glass of 19mm by current state and produce required target component state.In the middle of production process, the same with the production normal glass, should do local fine setting as the case may be again, stable with what guarantee to produce.
Technical examples below in conjunction with adopting the present invention successfully to produce the super heavy sheet glass of 19mm at the 500T/D floatation glass production line is specified the present invention: 1, main technique technical indicator:
Drawing amount: 500 ± 3T/D
Pull speed: 1.92m/min
Raw sheet is wide: 3960mm
Interior tooth distance: 3560mm
Thickness: 19 ± 0.3mm2, electrically heated and water coolant job contract skill are arranged synoptic diagram, as shown in Figure 4: 3, edge machine parameter:
Adopt 11 pairs of edge machines, the spacing of edge machine is between 1.0---3m, and each is as follows to the parameter of edge machine:
| Plane No. | Speed (m/min) | Angle (°) | Parking stall (mm) |
| ????1# | ????12 | ????-9 | ????3210 |
| ????2# | ????10.5 | ????-11 | ????3260 |
| ????3# | ????9 | ????-12 | ????3300 |
| ????4# | ????7.5 | ????-14 | ????3360 |
| ????5# | ????6 | ????-16 | ????3450 |
| ????6# | ????4.8 | ????-13 | ????3430 |
| ????7# | ????3.8 | ????-10 | ????3380 |
| ????8# | ????3 | ????-6 | ????3310 |
| ????9# | ????2.4 | ????-2 | ????3240 |
| ????10# | ????2.1 | ????-1 | ????3210 |
| ????11# | ????1.9 | ????0 | ????3200 |
Demonstrate in the drawing district from being provided with of above-mentioned technical parameter, promptly to have the setting of very big difference, especially angle be antipodal for the configuration aspect of later edge machine angle of No. 9 edge machines and relevant temperature field and the long-pending product method of improving people's living condition of traditional edge machine.
By ascending, descending again setting is until 0 degree with the edge machine angle in the present invention, especially No. 9 later edge machines are set to Small angle, just broken traditional thick pattern of piling simply, reduced the long-pending thick effect of edge machine, especially to the long-pending thick effect at middle part in this zone; But, be unfavorable for the control that plate is wide if non-angular then makes strip be in the state of laterally making thinner freely fully.Long-pending thick in order to cooperate-as to make thinner-long-pending thicker technological process, and guarantee the smooth of final glass surface.In the molten tin bath high-temperature zone, usually the electrical heating power input in limit portion electrically heated district 7 is about 120KW, and the heating power in limit portion electrically heated district manys 10-50 kilowatt than secondary boundary region 5 electrical heating powers, and inferior limit portion electrical heating power manys 10-50 kilowatt than the heating power of central section 6; And near the central area 3 electrical heating power inputs tin bath outlet are generally 50KW, the electrically heated 8 of limit portion is added power 10-40 kilowatt than the centre, to satisfy the viscosity of sheet glass middle part viscosity, be beneficial to the intermediary purpose of speed of making thinner greater than the speed of making thinner of limit portion less than both sides portion.As shown in accompanying drawing 5, i.e. the h1 speed of making thinner at the place＞h2 place speed of making thinner＞h3 place speed of making thinner, thus having controlled the horizontal thickness difference Δ h of sheet glass to minimum, can reach ± 0.3mm.Therefore have only realized above-mentionedly making thinner earlier, long-pending thick, the technological process of making thinner again in back, the edge machine production of the super heavy sheet glass of 19mm just can overcome the thickness difference restriction of horizontal strip, the purpose of the production that hits pay dirk.
According to method of the present invention, as long as suitable adjusting process parameter can also be used to produce the super thick float glass greater than 19mm.
Claims (3)
1, a kind of shaped device of super thick float glass is characterized in that in molten tin bath high-temperature zone (1) quantity being set is 6～12 pairs edge machine (2); The distance of described every pair of edge machine is spaced apart 1.0～3.0m; Angle between the vertical line direction of the axis direction of each edge machine and molten tin bath axis can be between-20 °～20 °.
2, the shaped device of the super thick float glass described in claim 1 is characterized in that being provided with water coolant bag (4) described after being provided with the edge machine of molten tin bath high-temperature zone.
3, a kind of production technique of utilizing the super thick float glass of shaped device production described in the claim 1 is characterized in that:
A: determine at first that wide, the clean plate of sheet glass raw sheet is wide, tooth distance, pull speed, glass metal inflow temperature parameter;
B: quantity is set is 6～12 pairs edge machine in described molten tin bath high-temperature zone, the distance of every pair of edge machine is spaced apart 1.0～3.0m, and the vertical line direction of the axis direction of each edge machine and molten tin bath axis forms 0 degree or negative angle, and angular range is at 0～-20 °;
C: in the molten tin bath high-temperature zone, the heating power of limit portion electrically heated district (7) manys 10-50 kilowatt than the secondary boundary region electrical heating power, and the heating power in inferior portion electrically heated district, limit (5) manys 10-50 kilowatt than the heating power of central section (6); Many 10-40 kilowatt and add power than intermediate zone (3) at the attached near part of tin bath outlet (8) electrical heating power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02152099 CN1412135A (en) | 2002-11-29 | 2002-11-29 | Forming device of ultrathick float glass and its production process |
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| CN 02152099 CN1412135A (en) | 2002-11-29 | 2002-11-29 | Forming device of ultrathick float glass and its production process |
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| CN1412135A true CN1412135A (en) | 2003-04-23 |
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| CN 02152099 Pending CN1412135A (en) | 2002-11-29 | 2002-11-29 | Forming device of ultrathick float glass and its production process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435162A (en) * | 2010-08-27 | 2012-05-02 | 康宁股份有限公司 | Method and device for estimating under-zerogravity shape |
| CN1914125B (en) * | 2004-01-28 | 2013-09-25 | 法国圣戈班玻璃厂 | Fabrication of flat glass by the float method without any fixed point |
| CN105776825A (en) * | 2014-12-26 | 2016-07-20 | 吴江南玻玻璃有限公司 | Float glass production equipment |
| CN111470760A (en) * | 2020-06-02 | 2020-07-31 | 咸宁南玻玻璃有限公司 | Production method of 22 mm super-thick float glass |
| CN113816590A (en) * | 2021-10-28 | 2021-12-21 | 河南省中联玻璃有限责任公司 | Ultra-white glass based on float process and preparation method thereof |
| CN113816591A (en) * | 2021-10-28 | 2021-12-21 | 河南省中联玻璃有限责任公司 | Ultra-white and ultra-thick float glass and preparation method thereof |
| 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 |
| CN114702232A (en) * | 2022-04-19 | 2022-07-05 | 中国建筑材料科学研究总院有限公司 | Sheet glass, and method and apparatus for forming the same |
| CN115180804A (en) * | 2022-08-25 | 2022-10-14 | 咸宁南玻玻璃有限公司 | Control method of float glass ultra-thick plate |
-
2002
- 2002-11-29 CN CN 02152099 patent/CN1412135A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1914125B (en) * | 2004-01-28 | 2013-09-25 | 法国圣戈班玻璃厂 | Fabrication of flat glass by the float method without any fixed point |
| CN102435162A (en) * | 2010-08-27 | 2012-05-02 | 康宁股份有限公司 | Method and device for estimating under-zerogravity shape |
| CN102435162B (en) * | 2010-08-27 | 2015-02-04 | 康宁股份有限公司 | Method for estimating under-zerogravity shape of flexible object |
| CN105776825A (en) * | 2014-12-26 | 2016-07-20 | 吴江南玻玻璃有限公司 | Float glass production equipment |
| CN105776825B (en) * | 2014-12-26 | 2019-01-18 | 吴江南玻玻璃有限公司 | A kind of float glass equipment |
| CN111470760A (en) * | 2020-06-02 | 2020-07-31 | 咸宁南玻玻璃有限公司 | Production method of 22 mm super-thick float glass |
| CN113816590A (en) * | 2021-10-28 | 2021-12-21 | 河南省中联玻璃有限责任公司 | Ultra-white glass based on float process and preparation method thereof |
| CN113816591A (en) * | 2021-10-28 | 2021-12-21 | 河南省中联玻璃有限责任公司 | Ultra-white and ultra-thick float glass and preparation method thereof |
| 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 |
| CN114702232A (en) * | 2022-04-19 | 2022-07-05 | 中国建筑材料科学研究总院有限公司 | Sheet glass, and method and apparatus for forming the same |
| CN114702232B (en) * | 2022-04-19 | 2023-10-13 | 中国建筑材料科学研究总院有限公司 | Sheet glass and molding method and molding device thereof |
| CN115180804A (en) * | 2022-08-25 | 2022-10-14 | 咸宁南玻玻璃有限公司 | Control method of float glass ultra-thick plate |
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