WO2019019699A1 - Procédé de production de verre trempé mince - Google Patents

Procédé de production de verre trempé mince Download PDF

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Publication number
WO2019019699A1
WO2019019699A1 PCT/CN2018/082668 CN2018082668W WO2019019699A1 WO 2019019699 A1 WO2019019699 A1 WO 2019019699A1 CN 2018082668 W CN2018082668 W CN 2018082668W WO 2019019699 A1 WO2019019699 A1 WO 2019019699A1
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WO
WIPO (PCT)
Prior art keywords
glass plate
glass
louver
heater
cooling
Prior art date
Application number
PCT/CN2018/082668
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English (en)
Chinese (zh)
Inventor
赵雁
李彦兵
张喜宾
Original Assignee
洛阳兰迪玻璃机器股份有限公司
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Application filed by 洛阳兰迪玻璃机器股份有限公司 filed Critical 洛阳兰迪玻璃机器股份有限公司
Publication of WO2019019699A1 publication Critical patent/WO2019019699A1/fr

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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

Definitions

  • the invention relates to the field of glass tempering, in particular to a method for producing thin tempered glass.
  • the tempering of glass is mainly achieved in two ways: one is chemical tempering and the other is physical tempering.
  • Chemical tempering is to place the glass in the molten alkali salt, so that the ions with smaller radius in the surface layer of the glass exchange with the ions with larger radius in the molten salt, and finally form a compressive stress layer on both surfaces of the glass to form a sheet in the interior of the glass.
  • the stress layer achieves the purpose of improving the mechanical strength and temperature shock resistance of the glass.
  • Physical tempering is when ordinary flat glass is heated in a heating furnace to a softening temperature close to glass, the internal stress is removed by its own deformation, and then the glass is removed from the heating furnace, and then the high-pressure cold air is blown to both sides of the glass by a multi-head nozzle, so that The tempered glass can be obtained by rapidly and uniformly cooling to room temperature.
  • a patent proposes a docking structure between the heating furnace body and the quenching section, and the convex nozzle structure is used to ensure that the glass surface leaving the furnace door still has a hot air flow, so that the glass does not cool rapidly.
  • This design has a complicated structure and wastes energy. Each time the furnace door is opened, the airflow in the heating furnace is disturbed, which affects the stability of the heating furnace.
  • the object of the present invention is to overcome the deficiencies of the above prior art and to provide a method for producing a thin tempered glass which can continuously temper a thin glass plate having a thickness of less than 3 mm, and the tempering standard can meet the requirements of the national building material tempered glass.
  • a thin tempered glass production method comprising the following steps:
  • the cooling louver is provided with a plurality of heaters, while the glass plate is rapidly cooled, The heater simultaneously heats the surface of the glass plate and the core to form a temperature gradient from the surface of the glass plate to the core;
  • step (3) After completing the step (2), the glass plate is slowly cooled after the quenching process;
  • the glass plate is placed under the slow cooling process.
  • the conveying mechanism is a roller conveyor mechanism or an air flotation conveying mechanism.
  • the cooling louver uses a cast volute fan to output cooling air to the surface of the glass sheet.
  • the cooling louver includes an upper louver and a lower louver, and both the upper louver and the lower louver include at least one louver assembly disposed between adjacent louver assemblies in the same louver.
  • the glass plate is turned on before the quenching, so that when the glass plate is quenched, the heating power of the heater can reach the required efficiency.
  • a transition heating section is further disposed between the heating furnace and the cooling air grille, and the transition heating section includes a transition conveying mechanism (part of the conveying mechanism) and a heater that simultaneously heats the surface and the core of the glass sheet. .
  • the heating temperature of the transition heating section is 630 to 650 °C.
  • the heater employs an infrared heater or a microwave heater.
  • the heater employs an infrared heater having a wavelength of 1000 to 5000 nm.
  • the glass plate After the thin glass plate is heated to the softening temperature by the heating furnace, the glass plate enters the cooling wind grid, and the glass plate starts to be quenched. Since the thickness of the thin glass plate is thin, the surface temperature of the glass plate is in the process of quenching. The temperature of the part is simultaneously lowered, and the temperature difference is not easily formed.
  • the heater is installed in the cooling louver, the glass plate enters the cooling louver, and the surface of the glass plate and the core are simultaneously heated while being cooled. At this time, the glass plate is quenched.
  • the surface is rapidly cooled, and at this time, the temperature of the core of the glass plate remains unchanged or changes less due to heating, thereby forming a temperature difference from the surface of the glass plate to the core, and improving the tempering quality of the tempered sheet glass.
  • the obtained tempered thin glass can meet the requirements of national building materials tempered glass.
  • the heater of the invention adopts infrared heating or microwave heating, can transfer heat to the core of the thin glass plate, form a temperature gradient from the core to the surface of the thin glass plate, and maintain the compressive stress and the tensile stress generated on the surface of the glass.
  • the balance improves the tempering effect of the thin glass.
  • the invention further comprises a heater between the heating furnace and the cooling wind grid, which mainly heats the surface of the glass plate and the core at the same time, maintains the temperature of the surface of the glass plate and the core, and avoids the cooling of the thin glass leaving the furnace door first. It affects the quality of tempered glass.
  • the cooling louver adopts a cast volute high-pressure fan to output cooling air to the glass surface, instead of cooling air for cooling, which overcomes the pressure drop and pressure instability caused by the compressed air, and adversely affects the tempering quality of the thin glass. The problem.
  • Figure 1 is a schematic view of a heating furnace and a cooling damper of the present invention.
  • Reference numerals 1, heating furnace, 2, conveying mechanism, 3, glass plate, 4, transition heating section, 5, cooling louver, 6, wind grid assembly, 7, heater, 8, wind gust, 9, downwind Grid, 10, transition conveying mechanism.
  • a thin tempered glass production method includes the following steps:
  • the glass plate 3 is horizontally placed on the conveying mechanism 2, and the glass plate 3 is conveyed to the heating furnace 1 by the conveying mechanism 2 for tempering heating; in this step, the glass plate is heated to a tempering temperature of 650 to 720 °C.
  • the glass plate 3 after the heat treatment is transported out of the heating furnace 1 by the transport mechanism 2, and the glass plate 3 is discharged at a speed of 100 to 1000 mm/s, and the glass plate 3 is transported into the cooling louver 5 by the transport mechanism 2 for cooling.
  • the glass plate 3 of the output heating furnace 1 is first quenched in the cooling louver 5, and a plurality of heaters 7 for simultaneously heating the surface and the core of the glass plate are arranged in the cooling louver 5 to make the surface of the glass plate to the heart.
  • the temperature gradient is formed; the glass plate opens the heater 7 before entering the cooling louver 5, so that when the glass plate enters the cooling louver 5, the heating power of the heater 7 can reach the required efficiency.
  • step (3) After completing the step (2), the glass plate is slowly cooled after the quenching process until the glass plate reaches a local touch effect;
  • the cooling louver 5 includes an upwind grid 8 and a downwind grid 9, each of which includes at least one wind grid assembly 6 disposed between adjacent wind grid assemblies 6 in the same wind grid.
  • the heaters 7 may be disposed between the wind grid assemblies 6 of the upwind grid 8, or between the wind grid assemblies 6 of the downwind grid 9, or at the same time the respective wind grid assemblies 6 disposed in the upwind grid 8 and the downwind grid 9. between.
  • the transport mechanism 2 is a roller conveyor mechanism or an air flotation transport mechanism.
  • the conveying mechanism 2 and the transition conveying mechanism 10 illustrated in Fig. 1 are both roller conveyor mechanisms; the roller conveyor mechanism may be replaced with an air flotation conveying mechanism according to the prior art.
  • a transition heating section 4 is further provided between the heating furnace 1 and the cooling louver 5, and the transition heating section 4 includes a transition conveying mechanism 10 for conveying the glass sheet 3 outputted from the heating furnace 1, and transitions.
  • a heater 7 for simultaneously heating the surface and the core of the glass sheet 3 is provided above and below the conveying mechanism 10.
  • the cooling louver 5 uses a cast volute high-pressure fan to output cooling air to the surface of the glass plate 3.
  • the heater is installed in the transition heating section and the cooling louver, and the heater 7 provided in the transition heating section 4 and the cooling louver 5 is an infrared heater or a microwave heater.
  • the wavelength of the infrared light is 1000 to 5000 nm, preferably, infrared rays having a wavelength of 2000 to 3000 nm are used; and microwave heating is performed, and the wavelength is 1 to 1000 mm.
  • infrared heating can achieve fixed-point heating, and the heating effect of the core of the glass plate is better.
  • the heating temperature of the transition heating section 4 is 630 to 650 ° C, which is within the softening temperature range of the glass.
  • a plurality of heaters 7 for simultaneously heating the surface and the core of the glass plate 3 are arranged on the cooling louver 5 to form a temperature gradient from the surface to the core of the glass plate 3; the glass plate 3 turns on the heater 7 before quenching, When the glass sheet 3 is quenched, the heating power of the heater 7 can achieve the required efficiency.
  • the heater 7 is heated by infrared rays having a wavelength of 2000 to 3000 nm, and the wind pressure is set to a rated wind pressure of 95%.
  • the glass plate 3 is slowly cooled after the quenching process until the glass plate 3 reaches a local touch effect
  • the thin tempered glass obtained in this example has a particle size of 55 particles in a 50 mm ⁇ 50 mm square.
  • the heat-treated glass sheet is conveyed out of the heating furnace 1 through the conveying mechanism 2, the glass sheet is discharged at a speed of 500 mm/s, and enters the transition conveying mechanism 10, and the transition conveying mechanism 10 is installed with a plurality of A heater which mainly heats the surface and the core of the glass plate 3 at a heating temperature of 630 ° C to maintain the surface of the glass plate 3 and the temperature of the core.
  • the glass plate 3 enters the cooling louver 5 after passing through the transition conveying mechanism 10, at which time the cooling louver 5 provides a higher wind pressure, and the surface of the glass plate 3 can be rapidly cooled while cooling some of the louver
  • the heater heats the surface of the glass plate 3 and the core at the same time.
  • the surface of the glass plate 3 is cooled mainly while heating the core of the glass, maintaining the temperature of the core, and forming a temperature difference from the core to the surface. It is required to turn on the heater 7 before the glass plate is quenched, so that the glass plate 3 can be heated to a desired temperature to achieve the required efficiency.
  • the heater 7 is heated by microwaves, and the wind pressure is set to a rated wind pressure of 95%.
  • the thin tempered glass obtained in this example has a particle size of 60 particles in a 50 mm ⁇ 50 mm square.
  • the heat-treated glass plate 3 is sent out to the heating furnace through the conveying mechanism 2, the glass plate 3 is discharged at a speed of 1000 mm/s, and enters the transition conveying mechanism 10, and the transition conveying mechanism 10 is installed.
  • a plurality of heaters 7 are mainly heated simultaneously for the surface of the glass plate and the core, and the heating temperature is 650 ° C to maintain the surface of the glass plate and the temperature of the core.
  • the glass plate 3 is transported by the conveying mechanism 2 into the cooling louver 5, and the cooling louver 5 has a high wind pressure, and the surface of the glass plate 3 can be rapidly cooled while being arranged in the area.
  • a plurality of heaters 7 are mainly heated simultaneously for the surface and the core of the glass plate 3.
  • the glass surface is cooled while mainly heating the glass core, maintaining the temperature of the core, and forming a temperature difference from the core to the surface. It is required to open the heater in advance when the glass sheet enters the area so that the glass sheet 3 can reach the required efficiency when entering the area.
  • the heater 7 is heated by microwaves, the fan power of the cooling grille 5 is 315 kW, and the wind pressure is set to a rated wind pressure of 95%.
  • the thin tempered glass obtained in this example has a particle size of 62 particles in a 50 mm ⁇ 50 mm square.
  • the particle size in the 50mm ⁇ 50mm box is 15 pieces, the stress is 123MPa, and the flatness of the edge of the thin glass plate is less than or equal to 0.25.
  • the particle size in the 50mm ⁇ 50mm box is 5
  • the stress is 110MPa
  • the flatness of the edge of the thin glass plate is less than or equal to 0.25.
  • the heater is turned on: the stress is 115 MPa, and the flatness of the edge of the thin glass plate is 0.3 or less.
  • the heater is not turned on: the stress is 96 MPa, and the flatness of the edge of the thin glass plate is 0.3 or less.

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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

L'invention concerne un procédé de production de verre trempé mince, comprenant une étape de chauffage d'un panneau de verre dans un four de chauffage, une étape de transport du panneau de verre traité thermiquement hors du four de chauffage par l'intermédiaire d'un mécanisme de transport et d'introduction du panneau de verre dans une grille d'air de refroidissement pour son refroidissement rapide, une étape de refroidissement lent et une étape d'abaissement du panneau de verre. Pendant le refroidissement, la surface et la partie centrale du panneau de verre sont chauffées simultanément, le refroidissement rapide permet à la surface du panneau de verre d'être refroidie rapidement et, en même temps, la température de la partie centrale du panneau de verre soit reste inchangée soit change légèrement en raison du chauffage, ce qui forme ainsi une différence de température entre la surface et la partie centrale du panneau de verre, ce qui augmente la qualité de la trempe du verre trempé mince et ce qui permet au verre trempé mince ainsi produit de satisfaire aux exigences nationales concernant du verre trempé en tant que matériau de construction .
PCT/CN2018/082668 2017-07-26 2018-04-11 Procédé de production de verre trempé mince WO2019019699A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710620028.9 2017-07-26
CN201710620028.9A CN107586013A (zh) 2017-07-26 2017-07-26 一种薄钢化玻璃生产方法

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WO2019019699A1 true WO2019019699A1 (fr) 2019-01-31

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107586013A (zh) * 2017-07-26 2018-01-16 洛阳兰迪玻璃机器股份有限公司 一种薄钢化玻璃生产方法
CN109867437A (zh) * 2019-03-27 2019-06-11 天津泓雅节能科技有限责任公司 一种通过式喷雾淬冷钢化装置及操作方法
CN109970329A (zh) * 2019-04-19 2019-07-05 合肥中科衡金工业自动化有限公司 一种厚度不大于3mm的超薄玻璃的快速钢化成型方法
CN113800755A (zh) * 2021-09-28 2021-12-17 湖南旗滨节能玻璃有限公司 一种钢化玻璃的制备方法
CN114380486A (zh) * 2021-12-31 2022-04-22 中建材蚌埠玻璃工业设计研究院有限公司 一种平板玻璃物理钢化炉

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938980A (en) * 1973-12-20 1976-02-17 The Seagrave Corporation Method and apparatus for forming tempered glass articles
US5827345A (en) * 1995-09-07 1998-10-27 Ford Global Technologies, Inc. Method for heating, forming and tempering a glass sheet
CN1701043A (zh) * 2002-09-19 2005-11-23 普雷马卡兰·T·博阿兹 同时加热和冷却玻璃以生产回火玻璃的系统和方法
CN1732133A (zh) * 2002-12-25 2006-02-08 日本板硝子株式会社 玻璃板的急冷方法及装置
CN102834362A (zh) * 2010-03-30 2012-12-19 旭硝子株式会社 玻璃板的强化方法及其装置
CN107586013A (zh) * 2017-07-26 2018-01-16 洛阳兰迪玻璃机器股份有限公司 一种薄钢化玻璃生产方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101248380B1 (ko) * 2010-12-30 2013-03-28 삼성코닝정밀소재 주식회사 패턴드 강화유리 제조 장치 및 방법
CN203175991U (zh) * 2013-04-28 2013-09-04 浙江聚英环保科技有限公司 双出风半蜗壳式离心风机
CN103449712A (zh) * 2013-08-14 2013-12-18 浙江鼎玻自动化设备有限公司 一种无阻隔强辐射风机对流玻璃钢化炉
CN105198197B (zh) * 2014-06-18 2018-08-03 洛阳兰迪玻璃机器股份有限公司 一种钢化玻璃生产线

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938980A (en) * 1973-12-20 1976-02-17 The Seagrave Corporation Method and apparatus for forming tempered glass articles
US5827345A (en) * 1995-09-07 1998-10-27 Ford Global Technologies, Inc. Method for heating, forming and tempering a glass sheet
CN1701043A (zh) * 2002-09-19 2005-11-23 普雷马卡兰·T·博阿兹 同时加热和冷却玻璃以生产回火玻璃的系统和方法
CN1732133A (zh) * 2002-12-25 2006-02-08 日本板硝子株式会社 玻璃板的急冷方法及装置
CN102834362A (zh) * 2010-03-30 2012-12-19 旭硝子株式会社 玻璃板的强化方法及其装置
CN107586013A (zh) * 2017-07-26 2018-01-16 洛阳兰迪玻璃机器股份有限公司 一种薄钢化玻璃生产方法

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