CN107586013A - A kind of thin tempering glass production method - Google Patents
A kind of thin tempering glass production method Download PDFInfo
- Publication number
- CN107586013A CN107586013A CN201710620028.9A CN201710620028A CN107586013A CN 107586013 A CN107586013 A CN 107586013A CN 201710620028 A CN201710620028 A CN 201710620028A CN 107586013 A CN107586013 A CN 107586013A
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- glass
- glass plate
- air grid
- production method
- heater
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/012—Tempering or quenching glass products by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
A kind of thin tempering glass production method, the step of the step of the step of being heated including glass plate in heating furnace, the glass plate after heating being transferred out into heating furnace by conveying mechanism, and glass plate is delivered into cooling air grid the step of carrying out chilling, slow cooling and glass plate bottom sheet.The present invention heats simultaneously while cooling to glass pane surface and center portion, now, chilling makes glass pane surface obtain fast cooling, and now glass plate center portion temperature keeps constant due to heating or change is smaller, so as to form glass pane surface to the temperature difference of center portion, the tempering quality of tempering sheet glass is improved, the obtained thin glass of tempering can reach national building materials safety glass requirement.
Description
Technical field
The present invention relates to glass tempering field, and in particular to a kind of thin tempering glass production method.
Background technology
At present, the tempering of glass is mainly realized by two approach:One kind is chemical tempering, and one kind is physical toughened.Change
It is that glass is placed in the alkali salt of melting to learn tempering, make in surface layer of glass in the less ion of radius and fused salt radius larger from
Son exchanges, and finally forms compressive stress layer on two surfaces of glass, tensile stress layer is internally formed in glass, reaches and improves glass machine
The purpose of tool intensity and resisting temperature impact property.Physical toughened is that ordinary plate glass is heated in heating furnace close to glass
During softening temperature, internal stress is eliminated by the deformation of itself, glass is then removed into heating furnace, then with bull nozzle by high pressure
Cold air blows to the two sides of glass, it is rapidly and uniformly cooled to room temperature, you can safety glass is made.
For the glass of thinner thickness, especially thickness for below 3mm thin glass, because the thickness of glass has
Limit, when glass chilling, two surfaces and center portion are almost simultaneously cooled, it is difficult to surface is formed to the thermograde of center portion, it is also difficult
To form the balance of compression caused by glass surface and internal tensile stress, sheet glass is difficult to test by conventional physical tempering
Complete tempering.
Using traditional tempering means when producing thin tempering glass, following two difficult points are primarily present:Firstth, thin glass
During coming out of the stove, the glass for first leaving fire door is cooled down rapidly, and the quality of safety glass is affected greatly;Secondth, thin glass
Toughening process need greater pressure.
For first problem, there is patent to propose a kind of heating furnace body and quenching section docking structure, utilize such a convex mouth
The glass surface that formula structure ensures to leave fire door still has thermal current by making glass be unlikely to quickly to cool down.Such a design, knot
Structure is complicated and causes the waste of the energy, and opening fire door can cause the flow perturbation in heating furnace every time, influence the steady of heating furnace body
It is qualitative.
For Second Problem, prior art is cooled down using compressed air mostly, is the shortcomings that such a scheme:
Pressure has a process fallen rapidly to compressed air after opening, and over time, the pressure of compressed air also can
Further to decline, the fluctuation of such a pressure will bring adverse effect to the tempering quality of thin glass, and another method is equipped with
High-power high voltage blower fan, to provide sufficiently high air pressure, and effect larger using powerful high pressure positive blower energy resource consumption
It is barely satisfactory.
The content of the invention
The invention aims to overcome above the deficiencies in the prior art part, there is provided a kind of thin tempering glass production
Method, can be by thickness in below the 3mm continuous tempering of thin glass plate, and tempering standard can reach national building materials safety glass
It is required that.
The used to achieve the above object technical scheme of the present invention is:A kind of thin tempering glass production method, including with
Lower step:
(1), glass plate is transported in heating furnace progress tempering heating by conveying mechanism;
(2), the glass plate after heating sent out into heating furnace by conveying mechanism, and be sent into cooling air grid and carry out chilling;
Wherein, some heaters are provided with cooling air grid, while glass plate carries out chilling, described heater is to glass pane surface
Heated simultaneously with center portion, surface to the center portion of glass plate is formed thermograde;
(3), complete step(2)Slow cooling is carried out to glass plate after quenching process;
(4), complete step(3)After annealing process, glass plate bottom sheet.
In the present invention, conveying mechanism is roller conveyor structure or air supporting conveying mechanism.
In the present invention, cooling air grid exports cooling wind using casting spiral case blower fan to glass pane surface.
In the present invention, cooling air grid includes upper air grid and lower air grid, and upper air grid and lower air grid include at least one air grid
Component, heater are arranged between the adjacent air grid component in same air grid.
Step of the present invention(2)In, glass plate is carrying out the front opening heater of chilling, makes glass plate when carrying out chilling,
The heating power of heater can reach the efficiency of needs.
In the present invention, it is preferred that transition bringing-up section is additionally provided between heating furnace and cooling air grid, transition bringing-up section included
Cross conveying mechanism(Belong to a part for conveying mechanism)And to heater that glass pane surface and center portion are heated simultaneously.
Preferably, the heating-up temperature of transition bringing-up section is 630 ~ 650 DEG C.
In the present invention, heater uses infrared heater or microwave applicator.
Preferably, heater uses infrared heater of the wavelength for 1000 ~ 5000nm.
Beneficial effect:After softening temperature is heated to by heating furnace, glass plate enters in cooling air grid thin glass plate, this
When glass plate start chilling, due to the thinner thickness of thin glass plate, in quenching process, glass pane surface temperature is same to center portion temperature
Shi Jiangwen, it is not easy to temperature difference is formed, but the present invention installs heater in cooling air grid, and glass plate enters cooling air grid, cold
But heated simultaneously to glass pane surface and center portion while, now, chilling makes glass pane surface obtain fast cooling, and now
Glass plate center portion temperature keeps constant due to heating or change is smaller, so as to form glass pane surface to the temperature of center portion
Difference, improve the tempering quality of tempering sheet glass.The obtained thin glass of tempering can reach national building materials safety glass requirement.
The heater of the present invention is heated using infrared heating or microwave, heat transfer can be penetrated into thin glass plate
Center portion, center portion to the surface of thin glass plate is formed thermograde, keep compression caused by glass surface and center portion tensile stress
Balance, improve the tempering effect of sheet glass.
The present invention is additionally provided with heater between heating furnace and cooling air grid, mainly for glass pane surface and center portion simultaneously
Heating, glass pane surface and center portion temperature are kept, avoided because the thin glass for first leaving Compaction of Heating Furnace Door cools down, to safety glass
Quality impacts.
Step 2 cooling air grid of the present invention exports cooling wind using casting spiral case high pressure positive blower to glass surface, instead of cold
But compressed air is used, overcomes because use compressed air pressure falls and pressure instability, the tempering quality of thin glass is brought not
The problem of profit influences.
Brief description of the drawings
Fig. 1 is the schematic diagram of heating furnace of the present invention and cooling air grid.
Reference:1st, heating furnace, 2, conveying mechanism, 3, glass plate, 4, transition bringing-up section, 5, cooling air grid, 6, air grid
Component, 7, heater, 8, upper air grid, 9, lower air grid, 10, transition conveyer structure.
Embodiment
Technological means, creation characteristic and the purpose reached to realize the present invention readily appreciate, with reference to specific
Figure, is expanded on further the present invention, but scope of the present invention is not limited to described in embodiment
Scope.
A kind of thin tempering glass production method, as shown in figure 1, comprising the following steps:
(1), glass plate 3 is horizontal positioned on conveying mechanism 2, glass plate 3 is transported in heating furnace 1 by conveying mechanism 2
Carry out tempering heating;In this step, glass plate is heated to 650 ~ 720 DEG C of tempering temperature.
(2), the glass plate 3 after heating transferred out into heating furnace 1 by conveying mechanism 2, glass plate 3 is come out of the stove speed
100 ~ 1000mm/s, glass plate 3 is conveyed into cooling air grid 5 by conveying mechanism 2 and cooled down, export the glass of heating furnace 1
Plate 3 first carries out chilling in cooling air grid 5, while arranges several to glass pane surface and center portion in cooling air grid 5 while enter
The heater 7 of row heating, surface to the center portion of glass plate is set to form thermograde;Glass plate is beaten before cooling air grid 5 is entered
Heater 7 is driven, making glass plate, the heating power of heater 7 can reach the efficiency of needs when entering cooling air grid 5.
(3), complete step(2)Slow cooling is carried out to glass plate after quenching process, can locally be touched until glass plate reaches
Effect;
(4), glass plate bottom sheet.
Wherein, cooling air grid 5 includes upper air grid 8 and lower air grid 9, and upper air grid 8 and lower air grid 9 include at least one air grid
Component 6, heater are arranged between the adjacent air grid component 6 in same air grid.Heater 7 can set grid of being in the wind
Between 8 air grid component 6 or it is arranged between the air grid component 6 of lower air grid 9 or be in the wind grid 8 and leeward is set simultaneously
Between respective air grid component 6 in grid 9.
In the present invention, the conveying mechanism 2 is roller conveyor structure or air supporting conveying mechanism.The conveying enumerated in Fig. 1
Mechanism 2 and transition conveyer structure 10 are roller conveyor structure;This roller conveyor structure can also be changed according to prior art
For air supporting conveying mechanism.
As shown in figure 1, being additionally provided with transition bringing-up section 4 between heating furnace 1 and cooling air grid 5, transition bringing-up section 4 includes using
The transition conveyer structure 10 of glass plate 3 exported in conveying is by heating furnace 1, it is all provided with above and below transition conveyer structure 10
It is equipped with for the surface of glass plate 3 and center portion while the heater 7 that is heated.
Wherein, cooling air grid 5 exports cooling wind using casting spiral case high pressure positive blower to the surface of glass plate 3.In the present invention, adopt
Heater is installed in transition bringing-up section and cooling air grid, the heater 7 set in transition bringing-up section 4 and cooling air grid 5 is adopted
With infrared heater or microwave applicator.When using infrared heating, the wavelength of infrared ray uses 1000 ~ 5000nm, excellent
Choosing, use infrared ray of the wavelength for 2000 ~ 3000nm;Microwave heats, 1 ~ 1000mm of wavelength.Wherein, infrared heating can be real
Now fixed point heating, the center portion heating effect of glass plate are more preferable.
Preferably, the heating-up temperature of transition bringing-up section 4 is 630 ~ 650 DEG C, in the softening range of glass.
Embodiment 1
A kind of thin tempering glass production method, comprises the following steps:(1), glass plate 3 is horizontal positioned on conveying mechanism 2, lead to
To cross conveying mechanism 2 and glass plate 3 is transported to progress tempering heating in heating furnace 1, heating-up temperature is 700 DEG C, wherein, glass plate 3
Specification be length × wide=600mm × 400mm, sheet thickness D=2.5mm, glass plate heat time t=105s;
(2), the glass plate 3 after heating transferred out into heating furnace 1 by conveying mechanism 2, glass plate 3 is come out of the stove speed 400mm/
S, glass plate is conveyed into cooling air grid 5 by conveying mechanism 2 and cooled down, export the glass plate 3 of heating furnace 1 first in cooling wind
Chilling is carried out in grid 5, while several heating heated simultaneously to the surface of glass plate 3 and center portion are arranged in cooling air grid 5
Device 7, surface to the center portion of glass plate 3 is set to form thermograde;Glass plate 3 is carrying out the front opening heater 7 of chilling, makes glass
For plate 3 when carrying out chilling, the heating power of heater 7 can reach the efficiency of needs.Wherein, heater 7 use wavelength for
2000 ~ 3000nm infrared heating, blast are set to 95% specified blast.
(3), complete step(2)Slow cooling is carried out to glass plate 3 after quenching process, can locally be touched until glass plate 3 reaches
The effect touched;
(4), glass plate bottom sheet.
Thin tempering glass made from the embodiment, the granularity in 50mm × 50mm square frames are 55.
Embodiment 2
A kind of thin tempering glass production method, comprises the following steps:(1)Heat:Conveyer is arrived by glass plate 3 is horizontal positioned
On structure 2, glass plate 3 is transported to by progress tempering heating in heating furnace 1 by conveying mechanism 2, heating-up temperature is 650 DEG C, wherein,
The specification of glass plate 3 is length × wide=600mm × 400mm, glass plate heat time t=100s;
(2)Temperature-compensating processing is carried out in transition bringing-up section:Glass plate after heating is transferred out by conveying mechanism 2 and added
Hot stove 1, glass plate are come out of the stove speed 500mm/s, and into transition conveyer structure 10, transition conveyer structure 10 is provided with some heating
Device, the heater heat simultaneously mainly for the surface of glass plate 3 and center portion, and heating-up temperature is 630 DEG C, keeps the surface of glass plate 3
With center portion temperature.
(3)Quenching process:Glass plate 3 is by entering cooling air grid 5 after transition conveyer structure 10, now cooling air grid 5 carries
For higher blast, the surface of glass plate 3 can quickly be cooled down, while some heaters in cooling air grid are directed to glass plate 3
Surface and center portion heat simultaneously, and glass plate 3 is surface-cooled while is heated mainly for glass center portion, keeps center portion temperature, makes
Center portion to surface forms temperature difference.It is required that carrying out chilling front opening heater 7 in glass plate, glass plate 3 is set to carry out chilling
When heating power can reach the efficiency of needs.Wherein, heater 7 is heated using microwave, and blast is set to 95% specified wind
Pressure.
(4)Slow cooling is handled:Pass through step(3)Afterwards, glass plate is delivered to slow cooling area 6 by conveying mechanism 2, carries out further
Cooling, reach can with glass flake touch effect.
(5)Glass plate bottom sheet.
Thin tempering glass made from the embodiment, the granularity in 50mm × 50mm square frames are 60.
Embodiment 3
A kind of thin tempering glass production method, comprises the following steps:(1)Heat:Conveyer is arrived by glass plate 3 is horizontal positioned
On structure 2, glass plate 3 is transported to by progress tempering heating in heating furnace 1 by conveying mechanism 2, heating-up temperature is 720 DEG C, wherein,
The specification of glass plate 3 is length × wide=600mm × 400mm, sheet thickness D=3mm, glass plate heat time t=90s;
(2)Temperature-compensating processing at the outer conveying mechanism of stove:Glass plate 3 after heating is sent out by conveying mechanism defeated 2 and added
Hot stove, glass plate 3 are come out of the stove speed 1000mm/s, and into transition conveyer structure 10, transition conveyer structure 10 is provided with some heating
Device 7, the heater 7 heat simultaneously mainly for glass pane surface and center portion, and heating-up temperature is 650 DEG C, keeps glass pane surface
With center portion temperature.
(3)Chilling:Enter cooling air grid 5, cooling by conveying glass plate 3 by conveying mechanism 2 after transition conveyer structure 10
Air grid 5 has higher blast, can quickly cool down on the surface of glass plate 3, while arranges some heaters 7, the heating in the area
Device 7 heats simultaneously mainly for the surface of glass plate 3 and center portion, is heated while glass surface cools down mainly for glass center portion,
Center portion temperature is kept, center portion to surface is formed temperature difference.It is required that opening heater in advance into the region in glass plate, make glass
The heating power when entering the region of glass plate 3 can reach the efficiency of needs.Wherein, heater 7 is heated using microwave, cools down wind
The power of fan of grid 5 is 315kw, and blast is set to 95% specified blast.
(4)Slow cooling is handled:Complete step(3)Slow cooling is carried out to glass plate after quenching process, until glass plate reaches can be with
The effect locally touched;
(5)Glass plate bottom sheet.
Thin tempering glass made from the embodiment, the granularity in 50mm × 50mm square frames are 62.
Comparative example 1
The specification of glass plate is length × wide=600mm × 400mm, sheet thickness 2.5mm, glass plate heat time 120s, is added
Heating-up temperature is 700 DEG C, speed of coming out of the stove 450mm/S in hot stove, and blast is set to 75% specified blast.
When the heater with not opening the present invention is opened in contrast, the parameter such as the granularity of thin glass plate, stress, flatness:
Open heater:Granularity in 50mm × 50mm square frames 15, stress 123MPa, thin glass plate edge flatness is less than
Equal to 0.25.
Do not open heater:Granularity in 50mm × 50mm square frames 5, stress 110MPa, thin glass plate edge is smooth
Degree is less than or equal to 0.25.
Comparative example 2
The specification of glass plate is length × wide=600mm × 400mm, sheet thickness 2.5mm, glass plate heat time 120s, is added
Heating-up temperature is 700 DEG C, speed of coming out of the stove 600mm/S in hot stove, and blast is set to 75% specified blast.
When the heater with not opening the present invention is opened in contrast, the parameter such as the granularity of thin glass plate, stress, flatness:
Open heater:Stress 115MPa, thin glass plate edge flatness are less than or equal to 0.3.
Do not open heater:Stress 96MPa, thin glass plate edge flatness are less than or equal to 0.3.
Claims (9)
1. a kind of thin tempering glass production method, it is characterised in that comprise the following steps:
(1), glass plate is transported in heating furnace by conveying mechanism and heated;
(2), the glass plate after heating sent out into heating furnace by conveying mechanism, and be sent into cooling air grid and carry out chilling;
Wherein, some heaters are provided with cooling air grid, while glass plate carries out chilling, described heater is to glass pane surface
Heated simultaneously with center portion, surface to the center portion of glass plate is formed thermograde;
(3), complete step(2)Slow cooling is carried out to glass plate after quenching process;
(4), complete step(3)After annealing process, glass plate bottom sheet.
A kind of 2. thin tempering glass production method, it is characterised in that:The conveying mechanism is that roller conveyor structure or air supporting are defeated
Send mechanism.
A kind of 3. thin tempering glass production method according to claim 1, it is characterised in that:Cooling air grid is using casting snail
Shell blower fan exports cooling wind to glass pane surface.
A kind of 4. thin tempering glass production method according to claim 1, it is characterised in that:Cooling air grid includes upper air grid
With lower air grid, upper air grid and lower air grid include at least one air grid component, and heater is arranged at the phase in same air grid
Between adjacent air grid component.
A kind of 5. thin tempering glass production method according to claim 1, it is characterised in that:Step(2)In, glass plate exists
The front opening heater of chilling is carried out, making glass plate, the heating power of heater can reach the effect of needs when carrying out chilling
Rate.
A kind of 6. thin tempering glass production method according to claim 1, it is characterised in that:Heating furnace and cooling air grid it
Between be additionally provided with transition bringing-up section, transition bringing-up section includes transition conveyer structure and glass pane surface and center portion is added simultaneously
The heater of heat.
A kind of 7. thin tempering glass production method according to claim 6, it is characterised in that:The transition bringing-up section adds
Hot temperature is 630 ~ 650 DEG C.
A kind of 8. thin tempering glass production method according to claim 1,4,5 or 6 any one, it is characterised in that:Heating
Device uses infrared heater or microwave applicator.
A kind of 9. thin tempering glass production method according to claim 7, it is characterised in that:Heater use wavelength for
1000 ~ 5000nm infrared heater.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN201710620028.9A CN107586013A (en) | 2017-07-26 | 2017-07-26 | A kind of thin tempering glass production method |
PCT/CN2018/082668 WO2019019699A1 (en) | 2017-07-26 | 2018-04-11 | Thin tempered glass production method |
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CN201710620028.9A CN107586013A (en) | 2017-07-26 | 2017-07-26 | A kind of thin tempering glass production method |
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CN107586013A true CN107586013A (en) | 2018-01-16 |
Family
ID=61041960
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CN201710620028.9A Pending CN107586013A (en) | 2017-07-26 | 2017-07-26 | A kind of thin tempering glass production method |
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CN (1) | CN107586013A (en) |
WO (1) | WO2019019699A1 (en) |
Cited By (5)
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WO2019019699A1 (en) * | 2017-07-26 | 2019-01-31 | 洛阳兰迪玻璃机器股份有限公司 | Thin tempered glass production method |
CN109867437A (en) * | 2019-03-27 | 2019-06-11 | 天津泓雅节能科技有限责任公司 | One kind being sprayed quenching tempering device and operating method by formula |
CN109970329A (en) * | 2019-04-19 | 2019-07-05 | 合肥中科衡金工业自动化有限公司 | A kind of quick tempering forming method of ultra-thin glass of the thickness no more than 3mm |
CN113800755A (en) * | 2021-09-28 | 2021-12-17 | 湖南旗滨节能玻璃有限公司 | Preparation method of toughened glass |
CN114380486A (en) * | 2021-12-31 | 2022-04-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Plate glass physical tempering furnace |
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WO2019019699A1 (en) * | 2017-07-26 | 2019-01-31 | 洛阳兰迪玻璃机器股份有限公司 | Thin tempered glass production method |
CN109867437A (en) * | 2019-03-27 | 2019-06-11 | 天津泓雅节能科技有限责任公司 | One kind being sprayed quenching tempering device and operating method by formula |
CN109970329A (en) * | 2019-04-19 | 2019-07-05 | 合肥中科衡金工业自动化有限公司 | A kind of quick tempering forming method of ultra-thin glass of the thickness no more than 3mm |
CN113800755A (en) * | 2021-09-28 | 2021-12-17 | 湖南旗滨节能玻璃有限公司 | Preparation method of toughened glass |
CN114380486A (en) * | 2021-12-31 | 2022-04-22 | 中建材蚌埠玻璃工业设计研究院有限公司 | Plate glass physical tempering furnace |
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Application publication date: 20180116 |
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