CN104671660A - Super-white and super-thick float glass and preparation method thereof - Google Patents
Super-white and super-thick float glass and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the field of glass making and in particular relates to super-white and super-thick float glass and a preparation method thereof. A raw material formula of the super-white and super-thick float glass is designed, an edge roller control technology is adopted, from a first pair of edge controllers to the last pair of edge controllers, an inward component force produced by virtue of speed difference and negative angle of each pair of edge rollers is utilized for controlling the speed difference to be 15-50m/h; runner temperature is controlled to be (1100-1105)+/-1 DEG C; molten tin slot outlet temperature is controlled to be 625+/-5 DEG C; pulling amount of each edge roller is controlled to be 560-610t/d, plate width is controlled to be 4000-4100mm, inner teeth are 3580-3860mm wide, and Vmain is 135-165m/h; and the prepared glass is good in transmittance, high in whiteness, small in colour difference, ultraviolet-resistant and non-glare. Optical distortion angle is more than 55 degrees, the produced glass plate is wide, and thickness and inner teeth are stable.
Description
Technical field
The present invention relates to glass manufacturing area, be specifically related to a kind of ultrawhite super thick float glass and preparation method thereof.
Background technology
Along with the sharply minimizing of Nonrenewable energy resources on the earth, energy dilemma situation is increasingly severe, and the Development of Novel energy becomes a global problem already.Under such historical background, solar photovoltaic industry more and more receives people and pays close attention to widely.Ultra-clear glasses, as a kind of substrate material of solar photovoltaic industry, with the high transmission rate of its uniqueness, substantially increases photoelectric transformation efficiency, and the development for heliotechnics provides more wide development space.
Ultra-clear glasses in the past many ultrawhite calendaring line production by little tonnage is main, and increasing substantially along with ultra-clear glasses market demand, has also just expedited the emergence of large-tonnage ultra-white float glass production line and has constantly occurred.
Because the raw material iron-holder of producing " ultra-clear glasses " requires that very low, belt conveyor system deironing safeguard procedures require high, glass melting bubble technology for eliminating level is inadequate, and a series of technical barriers such as technical equipment such as super thick glass ware forming annealing cutting etc., bring difficult to manufacturing enterprise.Relevant ultrawhite super thick glass technology data is fewer at present, relevant report is also fewer, on December 8th, 1 prosperous in Air China 3 is reported, formally rolled off the production line by their the current ultrawhite super thick float glass sheet maximum in the world of independent research, the ultrawhite super thick float glass maximum in the world successfully producing 18m × 3.3m × 12mm is especially big former, achieves technological innovation achievement.
At present, along with the popularization of doing one's utmost of national environmental protection energy saving policy, particularly China builds solar energy photoelectric curtain wall production line, and numerous and confused ultra-clear glasses of selecting is applied on photovoltaic plant as the substrate of solar energy optical-thermal and opto-electronic conversion, immediately improves larger development space; Simultaneously because ultra-clear glasses iron-holder is low, optical throughput large, there is glittering and translucent, high-grade elegant speciality, be widely used in the technical fields such as building decoration (as door and window, partition, curtain wall).
Especially produce the ultrawhite super thick glass of thickness at the large gauge of more than 15mm, suitability for industrialized production difficulty is larger but the difficulty of current production ultra-clear glasses is large!
Therefore, this project solves glass " ultrawhite " composition of raw materials first technically, iron removal technology, furnace construction, batching fusing, temperature control, and will solve shaping, annealing and the technical barrier such as cutting of " super thick glass " simultaneously.
Summary of the invention
The object of the invention is the problem that there is difficulty in order to solve current ultrawhite super thick glass in preparation, a kind of ultrawhite super thick float glass and preparation method thereof are provided.
In order to reach foregoing invention object, the present invention by the following technical solutions:
A kind of ultrawhite super thick float glass, the raw materials by weight portion meter of described glass comprises following component: silica sand: 70-80 part, wherein, and the content≤100-120ppm of iron, particle diameter is ratio>=95% of 0.1-0.7mm, the ratio < 5% of particle diameter <0.1mm; Rhombspar: 5-10 part, wherein, content>=30% of calcium oxide, magnesian content>=20%; Wingdale: 10-15 part, wherein, content>=54.5% of calcium oxide, content≤0.105% of ferric oxide; Aluminum oxide powder: 0.1-1 part, wherein, Al
2o
3content>=99.5%, Fe
2o
3content≤0.01%; Heavy alkali: 20-25 part, wherein, Na
2cO
3content >99.5%, content≤0.5% of NaCl, Na
2sO
4content≤0.3%, Fe
2o
3content≤0.05%; Saltcake: 0.2-1 part, wherein, Na
2sO
4content>=99%; Powdered carbon: 0.1-0.5 part, wherein, the content >80% of C; Cerium oxide: 0.04-0.15 part; Cobalt oxide: 0.01-0.05 part.
As preferably, the raw materials by weight portion meter of described glass comprises following component: silica sand 70 parts, rhombspar 8 parts, 11 parts, Wingdale, aluminum oxide powder 0.2 part, 21 parts, heavy alkali, saltcake: 0.2 part, powdered carbon 0.2 part, cerium oxide 0.3 part, cobalt oxide 0.3 part, sodium pyroantimoniate 2 parts.
Sodium pyroantimoniate can improve stability and the ductility of glass.Thus improve the over-all properties of glass.
A preparation method for ultrawhite super thick float glass, comprises pre-treatment, fusing, shaping and aftertreatment, is specially:
(1) pre-treatment: by raw material and irony equipment blocking, employing adds liner plate, the mode of spary polymer paint arranges liner plate on equipment, the pollution that minimizing iron rust and iron filings bring; In batch turning storehouse, belt conveyer head wheel cover, lift housing, blanking scraper-trough conveyer, the activation key position such as hopper and weighing bucket, liner plate is set; By powder storehouse spraying interior polymer paint or lining plank; In conveyor, blanking scraper-trough conveyer, bin bottom outlet and region of interest, the tramp iron separator for removing mechanical impurity iron and metal locator are all set;
(2) melt: fusing hot(test)-spot temperature remains on l580-l600 DEG C, drawing amount is down to 580t/d by 680t/d, runner temperature-stable is controlled within the scope of ± 1 DEG C, melt melting furnaces used compared with simple glass, deepen 100-300mm at the bottom of pond, be provided with for the convection current of reinforced glass liquid and the multi-stage stairs controlling glass-melt return-flow at the bottom of pond; The technology of electric boosting implemented by melting furnaces, electric boosting total power 4000kw;
(3) shaping: mold temperature selects 880-830 DEG C, and control mold temperature by the cooling of high-temperature water bag; Adopting 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, speed difference controls at 15-50m/h; Runner temperature: 1100 ± 1-1105 ± 1 DEG C; Tin bath outlet temperature 625 ± 5 DEG C control; Edge machine drawing amount 560-610t/d, plate is wide: 4000-4100mm, interior tooth: 3580-3860mm, V master=135-165m/h;
(4) anneal: shaping glass is annealed, obtains finished product.
For reducing in Raw material processing, conveyor course of conveying as far as possible, the impurity iron that irony equipment is introduced, carries out low iron process to all with the place of contact raw.By raw material and irony equipment blocking, adopt and add the mode such as liner plate, spary polymer paint.As batch turning storehouse, belt conveyer head wheel cover, lift housing, blanking scraper-trough conveyer, key position such as activation hopper and weighing bucket etc., liner plate is set, the pollution that minimizing iron rust and iron filings bring; And powder storehouse is inner, then need the different properties according to stored powder, spary polymer paint or lining plank.In addition, the positions such as lift hopper, blanking scraper-trough conveyer, use macromolecular material or stainless steel as far as possible.To wear and tear more serious position, then need to use wear-resisting steel plate or other wearing composite materials.The feed bin of raw material and elephant trunk inwall install a kind of wear resistant polyethylene plate (Chinese is called for short UPE plate) of ultra-high molecular weight, this is the linear structure polythene material of a kind of molecular weight more than 2,000,000, because molecular weight is high, there is the excellent properties such as extremely strong wear resistance, withstand voltage, shock-resistant, low temperature resistant, self-lubricating, ant-scaling, than the also wear-resisting several times such as stainless steel, brass.Deironing mainly arranges suspension type tramp iron separator.At positions such as conveyor, blanking scraper-trough conveyer, bin bottom outlets, tramp iron separator and metal locator are all set, for removing mechanical impurity iron.
Compared with common float glass, ultra-white float glass because of iron-holder low, in melting process of raw material, temperature of fusion be difficult to control, produce a large amount of bubble be difficult to eliminate.Ultra-clear glasses fusing hot(test)-spot temperature should remain on l580-l600 DEG C.The position control of focus should in 4# port position slightly before, and to ensure that glass has enough fusing times and stability, remaining on melting furnaces leading portion has stronger convection current, prevents " running material ".The temperature difference of focus and 1 port generally should remain on about 1O0 DEG C (as 1480).Prevent a large amount of Bubbles, drawing amount is down to 580t/d by 680t/d, and temperature of fusion is reduced, and effectively controls the melting process system of glass.Proper use of cooling end dilution wind, controls runner temperature-stable within the scope of ± 1 DEG C simultaneously.Runner temperature-stable is related to the balance that molten tin bath total heat brought into by the stable of flow and glass metal.
Under the precondition of 1., runner temperature-stable, glass metal stability of flow good at glass metal refining quality, just can make >=15 mm super thick float glass are stablized.
2. ultrawhite super thick glass tin groove forming thermal creep stress 880-830 DEG C, controls mold temperature by the cooling of high-temperature water bag.
3. the present invention adopts 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relies on the velocity contrast of often pair of edge machine and negative angle to produce inside component, and fast difference should not be too large, and general control is within the scope of 15-50m/h.At glass metal self gravitation, tension force, under edge machine piles the effect of thick reactive force and main transmission drawing, heap is tired gradually forms super thick glass.
4. in shaping process, controlled the trend of glass ribbon by rib device, make it to be in molten tin bath mid-way, for subsequent anneal provides more favourable condition.Keep stable in whole production process.
(1) ultra-clear glasses annealing cooling technology
Super thick Float Glass Annealing has 2 difficult problems, and the first, because glass is the poor conductor of heat, certainly exist plate core and the glass pane surface temperature difference large in super thick glass cooling process, the core of glass ribbon is difficult to the problem of cooling.To be in particular in actual production operation radiation cooling zone (i.e. heat preservation zone: A, B, C tri-district) glass ribbon is cold and do not get off, cold wind forces the F district of cooling zone, because plate core and the glass pane surface temperature difference greatly dare not be cold by force with Wind Volume.Result causes the excessive unfavorable secondary processing of the permanent stress of glass, it is high to go out annealing furnace temperature, after vanning, and produces self-destruction phenomenon.The second, with edge machine method production super thick glass, rely on edge machine to come long-pending thick completely, the degree of depth of the angle of edge machine, speed and press-in glass is increased; Glass edge outside tooth print is wider, and glass edge is cooler, and edge stress is increased; Finally cause and vertical to explode, split limit, clear limit difficulty; It is exactly briefly the excessive problem brought of glass ribbon transverse temperature difference.
Annealing: the measure improving super thick Float Glass Annealing:
1. the key reducing unrelieved stress reduces the rate of cooling G in B district, and the temperature difference △ T of G and B district import and export and pull speed relevant.Because the length in B district is fixed, therefore reduction A district temperature out makes it to enter annealing region is in advance exactly the length extending B district, also just makes rate of cooling G reduce.
2. pull speed is relevant with original plate width and drawing amount, in order to reach the object reducing rate of cooling G.Adopt wide plate method at a slow speed correct beyond doubt.Reducing drawing amount, is also the effective measure reducing pull speed.
3. reducing transverse temperature difference is the best measure improving width of glass sheet direction internal stress, strengthens the insulation of annealing furnace shell.Roller spindle nose and draw the insulation of sealing, particularly moving roil table both sides at glass cullet hole place and sealing seems particularly important.Early stage is suitably opened edge electrically heated in annealing, and suitably adjustment F district edge windsheild, reduces transverse temperature difference.
4. the check apron up and down of A district import and the check apron in D district of C district are the effective means separating each district of annealing furnace, if separate bad, defining draught, is a deathblow to the annealing of super thick float glass.
5. between moving roil table and annealing furnace, D district outlet, F district export each employing liquefied gas burn one opposite side fire, improve the situation that super thick float glass edge temperature is on the low side.
6. in the low-temperature zone both sides of molten tin bath, suitably open the temperature difference that electrically heated improves glass ribbon both sides, make to enter annealing furnace and reduce with the transverse temperature difference of front glass panel.
The ultrawhite super thick float glass adopting technique of the present invention to prepare, glass transmitance well all reaches more than 90%, and whiteness is high, and aberration is little.This optical skew angle is all more than 55 degree, and the sheet glass produced is wide, thickness, interior tooth are all more stable.The thickness of ultrawhite super thick float glass prepared by the present invention can reach more than 15mm, can reach more than 19mm.
Embodiment
Below by specific embodiment, explanation is further described to technical scheme of the present invention.
If without specified otherwise, the raw material adopted in embodiments of the invention is the conventional raw material in this area, and the method adopted in embodiment, is the ordinary method of this area.
Embodiment 1:
A kind of raw material of ultrawhite super thick float glass, specification is the ultrawhite super thick glass of 15mm*3660, the raw materials by weight portion meter (every part is 10kg meter) of described glass comprises following component: silica sand: 70 parts, wherein, content≤the 100ppm of iron, particle diameter is ratio>=95% of 0.1-0.7mm, the ratio < 5% of particle diameter <0.1mm; Rhombspar: 10 parts, wherein, content>=30% of calcium oxide, magnesian content>=20%; Wingdale: 10 parts, wherein, content>=54.5% of calcium oxide, content≤0.105% of ferric oxide; Aluminum oxide powder: 1 part, wherein, Al
2o
3content>=99.5%, Fe
2o
3content≤0.01%; Heavy alkali: 20 parts, wherein, Na
2cO
3content >99.5%, content≤0.5% of NaCl, Na
2sO
4content≤0.3%, Fe
2o
3content≤0.05%; Saltcake: 1 part, wherein, Na
2sO
4content>=99%; Powdered carbon: 0.1 part, wherein, the content >80% of C; Cerium oxide: 0.04 part; Cobalt oxide: 0.01 part; Sodium pyroantimoniate: 1 part.
A preparation method for ultrawhite super thick float glass,
(1) pre-treatment: by raw material and irony equipment blocking, employing adds liner plate, the mode of spary polymer paint arranges liner plate on equipment, the pollution that minimizing iron rust and iron filings bring; In batch turning storehouse, belt conveyer head wheel cover, lift housing, blanking scraper-trough conveyer, the activation key position such as hopper and weighing bucket, liner plate is set; By powder storehouse spraying interior polymer paint or lining plank; In conveyor, blanking scraper-trough conveyer, bin bottom outlet and region of interest, the tramp iron separator for removing mechanical impurity iron and metal locator are all set;
(2) melt: fusing hot(test)-spot temperature remains on l580-l600 DEG C, drawing amount is down to 580t/d by 680t/d, runner temperature-stable is controlled within the scope of ± 1 DEG C, melt melting furnaces used compared with simple glass, deepen 100-300mm at the bottom of pond, be provided with for the convection current of reinforced glass liquid and the multi-stage stairs controlling glass-melt return-flow at the bottom of pond; The technology of electric boosting implemented by melting furnaces, electric boosting total power 4000kw;
(3) shaping: mold temperature selects 880-830 DEG C, and control mold temperature by the cooling of high-temperature water bag; Adopting 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, speed difference controls at 15-50m/h; Runner temperature: 1105 ± 1 DEG C; Tin bath outlet temperature: 625 ± 5 DEG C of controls; Drawing amount 550-600t/d, preferred 591t/d, the wide 4090mm of plate glass, interior tooth 3860mm, V master=165m/h;
(4) anneal: annealed by shaping glass, obtain finished product, thickness of glass is 14.77,14.79,14.64,14.65,14.82,14.78,15.12.
Produce 15mm*3660 ultrawhite super thick glass, using 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, gradually the tired super thick glass formed of heap.
The parameters of edge roller producing comparatively stable rear 15mm*3660 ultrawhite super thick is as follows:
Edge machine 1#2#3#4#5#6#7#8#
Speed 659580504430360290220156
Enter to stretch 18951633155315721680175418121760
Angle-18.3-17-15.7-14.6-13.2-17.8-18.7-19.3
After finished product test, 15mm glass transmitance is good, and all reach more than 90.27%, whiteness is high, and aberration is little.This time production ultrawhite super thick Glass optical deformation angle is all more than 55 degree.The sheet glass produced is wide, thickness, interior tooth are all more stable, and 15mm ultrawhite super thick thickness of glass, thickness difference are up to state standards requirement completely.
Embodiment 2:
A kind of raw material of ultrawhite super thick float glass, specification is the ultrawhite super thick glass of 19mm*3360, the raw materials by weight portion meter (every part is 10kg meter) of described glass comprises following component: silica sand: 80 parts, wherein, content≤the 120ppm of iron, particle diameter is ratio>=95% of 0.1mm, the ratio < 5% of particle diameter <0.1mm; Rhombspar: 10 parts, wherein, content>=30% of calcium oxide, magnesian content>=20%; Wingdale: 10 parts, wherein, content>=54.5% of calcium oxide, content≤0.105% of ferric oxide; Aluminum oxide powder: 1 part, wherein, Al
2o
3content>=99.5%, Fe
2o
3content≤0.01%; Heavy alkali: 20 parts, wherein, Na
2cO
3content >99.5%, content≤0.5% of NaCl, Na
2sO
4content≤0.3%, Fe
2o
3content≤0.05%; Saltcake: 1 part, wherein, Na
2sO
4content>=99%; Powdered carbon: 0.1 part, wherein, the content >80% of C; Cerium oxide: 0.05 part; Cobalt oxide: 0.05 part; Sodium pyroantimoniate: 2 parts.
A preparation method for ultrawhite super thick float glass,
(1) pre-treatment: by raw material and irony equipment blocking, employing adds liner plate, the mode of spary polymer paint arranges liner plate on equipment, the pollution that minimizing iron rust and iron filings bring; In batch turning storehouse, belt conveyer head wheel cover, lift housing, blanking scraper-trough conveyer, the activation key position such as hopper and weighing bucket, liner plate is set; By powder storehouse spraying interior polymer paint or lining plank; In conveyor, blanking scraper-trough conveyer, bin bottom outlet and region of interest, the tramp iron separator for removing mechanical impurity iron and metal locator are all set;
(2) melt: fusing hot(test)-spot temperature remains on l580-l600 DEG C, drawing amount is down to 580t/d by 680t/d, runner temperature-stable is controlled within the scope of ± 1 DEG C, melt melting furnaces used compared with simple glass, deepen 100-300mm at the bottom of pond, be provided with for the convection current of reinforced glass liquid and the multi-stage stairs controlling glass-melt return-flow at the bottom of pond; The technology of electric boosting implemented by melting furnaces, electric boosting total power 4000kw;
(3) shaping: mold temperature selects 880-830 DEG C, and control mold temperature by the cooling of high-temperature water bag; Adopting 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, speed difference controls at 15-50m/h; Runner temperature: 1100 ± 1 DEG C; Tin bath outlet temperature 625 ± 5 DEG C control; Edge machine drawing amount 560 ~ 610t/d, preferred 595t/d; Plate is wide: 4000mm, interior tooth: 3580mm, V master=135m/h;
(4) anneal: shaping glass is annealed, obtains finished product, thickness of glass: 18.84,19.13,19.01,19.05,19.16,18.47.
Produce 19mm*3360 ultrawhite super thick glass, using 8 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, gradually the tired super thick glass formed of heap.
Wherein the parameter of edge machine is as follows:
Edge machine 1#2#3#4#5#6#7#8#
Speed 712618516414333257185115
Enter to stretch 15381310120712021265145816771706
Angle-19.6-19.3-18.7-19.3-18.6-19.6-19.6-19.7
After detecting finished product, 19mm glass transmitance well all reaches more than 90%, and whiteness is high, and aberration is little.The ultrawhite super thick Glass optical deformation angle that production obtains is all more than 55 degree.The sheet glass produced is wide, thickness, interior tooth are all more stable, and 19mm ultrawhite super thick thickness of glass, thickness difference are up to state standards requirement completely.
19mm thickness, thickness difference is slightly poor but be also up to state standards, and my company, by adjustment high-temperature zone electrically heated aperture, makes glass metal spread out, coordinates adjustment edge machine four degree, reduce thickness poor, raising company benefit.
Claims (4)
1. a ultrawhite super thick float glass, it is characterized in that, the raw materials by weight portion meter of described glass comprises following component: silica sand: 70-80 part, wherein, content≤the 100-120ppm of iron, particle diameter is ratio>=95% of 0.1-0.7mm, the ratio < 5% of particle diameter <0.1mm; Rhombspar: 5-10 part, wherein, content>=30% of calcium oxide, magnesian content>=20%; Wingdale: 10-15 part, wherein, content>=54.5% of calcium oxide, content≤0.105% of ferric oxide; Aluminum oxide powder: 0.1-1 part, wherein, Al
2o
3content>=99.5%, Fe
2o
3content≤0.01%; Heavy alkali: 20-25 part, wherein, Na
2cO
3content >99.5%, content≤0.5% of NaCl, Na
2sO
4content≤0.3%, Fe
2o
3content≤0.05%; Saltcake: 0.2-1 part, wherein, Na
2sO
4content>=99%; Powdered carbon: 0.1-0.5 part, wherein, the content >80% of C; Cerium oxide: 0.04-0.15 part; Cobalt oxide: 0.01-0.05 part.
2. a kind of ultrawhite super thick float glass according to claim 1, it is characterized in that, the raw materials by weight portion meter of described glass comprises following component: silica sand 70 parts, rhombspar 8 parts, 11 parts, Wingdale, aluminum oxide powder 0.2 part, 21 parts, heavy alkali, saltcake: 0.2 part, powdered carbon 0.2 part, cerium oxide 0.05 part, cobalt oxide 0.3 part, sodium pyroantimoniate 2 parts.
3. a preparation method for a kind of ultrawhite super thick float glass according to claim 1, is characterized in that, comprise pre-treatment, fusing, shaping and aftertreatment, be specially:
(1) pre-treatment: by raw material and irony equipment blocking, employing adds liner plate, the mode of spary polymer paint arranges liner plate on equipment, the pollution that minimizing iron rust and iron filings bring; In batch turning storehouse, belt conveyer head wheel cover, lift housing, blanking scraper-trough conveyer, the activation key position such as hopper and weighing bucket, liner plate is set; By powder storehouse spraying interior polymer paint or lining plank; In conveyor, blanking scraper-trough conveyer, bin bottom outlet and region of interest, the tramp iron separator for removing mechanical impurity iron and metal locator are all set;
(2) melt: fusing hot(test)-spot temperature remains on l580-l600 DEG C, drawing amount is down to 580t/d by 680t/d, runner temperature-stable is controlled within the scope of ± 1 DEG C, melt melting furnaces used compared with simple glass, deepen 100-300mm at the bottom of pond, be provided with for the convection current of reinforced glass liquid and the multi-stage stairs controlling glass-melt return-flow at the bottom of pond; The technology of electric boosting implemented by melting furnaces, electric boosting total power 4000kw;
(3) shaping: mold temperature selects 880-830 DEG C, and control mold temperature by the cooling of high-temperature water bag; Adopting 8 ~ 11 pairs of edge machines, from first pair of edge machine to last to drawing limit, relying on the velocity contrast of often pair of edge machine and negative angle to produce inside component, speed difference controls at 15-50m/h; Runner temperature: 1100 ± 1-1105 ± 1 DEG C; Tin bath outlet temperature 625 ± 5 DEG C control; Edge machine drawing amount 560-610t/d, plate is wide: 4000-4100mm, interior tooth: 3580-3860mm, V master=135m/h;
(4) anneal: shaping glass is annealed, obtains finished product.
4. the preparation method of a kind of ultrawhite super thick float glass according to claim 3, is characterized in that, described annealing, enters the transition roller-way both sides of annealing furnace, arrange 2-3 to burning, improve the temperature of glass edge at glass pull-out molten tin bath.
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| CN105837038A (en) * | 2016-05-19 | 2016-08-10 | 台玻安徽玻璃有限公司 | Super white float glass production method |
| CN106746636A (en) * | 2016-12-31 | 2017-05-31 | 长兴旗滨玻璃有限公司 | A kind of manufacture method of super thick super large glass |
| CN107162408A (en) * | 2017-06-15 | 2017-09-15 | 漳州旗滨玻璃有限公司 | A kind of thin electronic glass of ultrawhite and its production method |
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| 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 |
| CN113149434A (en) * | 2021-05-12 | 2021-07-23 | 斯卡特(北京)新材料技术有限公司 | Medium-light-transmission high-heat-insulation energy-saving float glass 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 |
| 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 |
| CN114212997A (en) * | 2021-11-30 | 2022-03-22 | 信义玻璃(天津)有限公司 | Preparation method of energy-saving glass |
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| 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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