EP2986578A1 - Fabrication d'une plaque vitrocéramique - Google Patents

Fabrication d'une plaque vitrocéramique

Info

Publication number
EP2986578A1
EP2986578A1 EP14719218.1A EP14719218A EP2986578A1 EP 2986578 A1 EP2986578 A1 EP 2986578A1 EP 14719218 A EP14719218 A EP 14719218A EP 2986578 A1 EP2986578 A1 EP 2986578A1
Authority
EP
European Patent Office
Prior art keywords
polishing
glass
glass pane
grinding
green glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14719218.1A
Other languages
German (de)
English (en)
Inventor
Paul Kirk RATZEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP2986578A1 publication Critical patent/EP2986578A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B13/00—Rolling molten glass, i.e. where the molten glass is shaped by rolling
    • C03B13/04—Rolling non-patterned sheets continuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/008—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding ceramics, pottery, table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/242—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for plate glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles

Definitions

  • the invention relates to glass ceramics. It relates in particular to the production of a pane of ceramic glass.
  • Glass ceramics are glasses which are produced by controlled at least partial crystallization of basic glass (so-called 'green glass'). Of particular importance are the aluminosilicate glasses, in particular according to the European standard EN 3748-2-1: 2004.
  • the base glasses are typically not produced by floatation (i.e., by pouring on a bath of liquid tin) like most commercial glass sheets. Rather, the base glasses are usually melted and rolled over rotating rollers. Due to this drawing process, the glasses thus obtained are textured on the surface.
  • the optical distortion of objects behind the glass results. The glass "scatters" the light - objects behind the glass are slightly diffused.
  • the glass is thermally treated in a special high-temperature process.
  • micro-crystallites are produced in the glass - the glass
  • This ceramized form has the advantageous properties of glass ceramics, in particular a thermal expansion coefficient of approximately 0. This causes, for example, that the glass ceramic does not crack or burst like abrupt temperature changes or large temperature gradients like other glasses Also known as materials for cookware or hot plates and as a window for stoves of all kinds.
  • a disadvantage of this method is the fact that the surface treatment must be very timely to hot-forming the green glass, and the difficult controllability of the process
  • the object of the present invention is to provide a method for producing a ceramic glass component, in particular a ceramic glass pane, which avoids the disadvantages of the prior art and which in particular eliminates the surface texturing with reasonable effort.
  • the invention is based on the very surprising finding that, on the one hand, a green glass pane (ie a pane made of a base glass which can be ceramified into glass ceramic) can be mechanically ground and / or polished with moderate effort. that no surface texturing impairing visual perception is no longer present, ie that objects behind the pane no longer have a diffuse effect.
  • the finding is based on the fact that the positive surface properties remain after such a mechanical grinding / polishing process during subsequent ceramization, ie the finished ceramic glass is neither cloudy nor diffusing.
  • the end product does not result in a reduction of the mechanical strength of the surface treatment by grinding and / or polishing of the green glass.
  • the process of grinding and / or polishing may include, for example, according to a first option that first the top layers are removed mechanically, for example by means of a diamond tool, and then the surface is mechanically polished, for example by means of a paste with diamond. Cerium oxide, alumina, iron oxide and / or other suitable particles). According to a second option, the process involves only a corresponding polishing process in which no significant quantities of glass are removed. It is also conceivable to carry out only one grinding process if the resulting surface roughness is sufficiently small for the intended purposes.
  • the surface roughness is reduced during polishing.
  • the polishing of a surface is therefore to be regarded as opposed to a roughening of the surface.
  • the grinding and / or polishing of the green glass pane affects at least a part of the surface.
  • the two opposite large areas of the surface can be ground and / or polished.
  • Such editing is usually not necessary, but it is also not excluded.
  • the production of a ceramic glass pane can therefore initially involve the production of the green glass pane from a corresponding glass mass (for example from an aluminosilicate) and the subsequent processing by grinding and / or polishing, wherein the green glass pane is preferably first cooled after the hot forming, for example, to a Temperature of at most 200 ° C.
  • the method taught here does not require an elevated temperature of the green glass sheet in its surface processing, and cooling to room temperature before surface treatment is easy, it is also very suitable for designs in which the green glass sheet is not manufactured in the same place where also the surface treatment takes place and the surface treatment is also temporally independent of the shaping of the green glass pane.
  • the green glass sheet is not manufactured in the same place where also the surface treatment takes place and the surface treatment is also temporally independent of the shaping of the green glass pane.
  • can - depending on the existing manufacturing storage and Transportation conditions take a relatively long time (eg at least 2 hours, but also days or weeks), without the disadvantages arise.
  • the subsequent ceramization can also take place temporally and / or spatially independently of the surface treatment, thus allowing a flexible production which is optimized with regard to existing conditions and capacities, without the need for additional heating energy for an intermediate heating step.
  • the green glass can be an aluminosilicate glass, in particular according to the European standard EN 1748-2-1.
  • the green glass sheet will generally be such as to be after ceramization - this may be done in an oven popular for this purpose, e.g. in a batch process or a continuous process - transparent and, for example, clear. i.e. unclouded.
  • the method according to the invention is particularly favorable in connection with the production of the green glass pane with hot forming, in particular by mechanical deformation of the molten green glass, for example by means of rotating rolls.
  • the invention also relates to the use of a ceramic glass pane produced by the method according to the invention-alone or as part of a composite-as a transparent glass pane of a building or means of transport (vehicle, ship, aircraft).
  • the ceramic glass pane is subsequently mounted in a suitable manner as part of the building or means of transport following the ceramization and, if appropriate, after further processing steps.
  • FIG. 2 shows a grinding process
  • FIG. and 3 shows a polishing process
  • the step shown in FIG. 1 of hot-forming green glass panes 1 from a molten glass 3 may optionally be part of the method according to the invention.
  • the method according to the invention can also be carried out with prefabricated, e.g. also commercially available green glass panes are performed.
  • the green glass panes 1 are formed in the process by rolling between two rotating rollers 5. In the example shown, this is done in a continuous process, with the resulting 'pulled-out' green glass pane, for example, being cut at regular intervals, so that a plurality of discrete green glass panes 1 is obtained. These can passively cool or accelerate by active means (ventilation, cooling in contact with a cooler, etc.) and stored, transported and / or processed as needed.
  • FIG. 2 shows the grinding of one of the green glass panes 1, for example by a rotating diamond tool 1 1 moved relative to the pane along the surface.
  • a rotating diamond tool 1 1 moved relative to the pane along the surface.
  • the grinding process is drawn in the figure for one of the two large areas.
  • a Schlei I revitaliz may optionally also be done for both of the large areas, either simultaneously or successively, in the latter case, the glass sheet between the grinding operations for the two surfaces can be turned.
  • Figure 3 shows - like all figures very schematically - a polishing process. Such a can subsequently be carried out on a grinding process (FIG. 2) or alone-without a preceding grinding process.
  • the reverse only grinding, without polishing is conceivable in principle, provided that the resulting surface roughness is sufficiently small for the intended purposes.
  • a polishing process can also be carried out in a manner known per se;
  • Fig. 3 shows a polishing apparatus with rotating polishing pad 21 and a suitable paste 22 between the pad 21 and the glass surface.
  • the polishing apparatus is moved relative to the surface. As with all of the relative movements described herein, this may also be accomplished by moving the glass sheet with stationary active means (here the polishing apparatus) or by moving both the glass sheet and the active agent (e.g. moving the glass sheet in a conveying direction combined with transverse movements thereof active agent along the surface).
  • the polishing takes place until a desired surface texture is achieved.
  • Polishing may also be performed on both facing glass surfaces, either simultaneously or sequentially, and turning the glass sheet 1 between polishing operations is also possible.
  • FIG. 4 schematically shows a high-temperature furnace 31 in which the green glass panes 1 are fired into ceramic glass panes. This is done under the conditions known per se for the production of glass ceramic - for example according to the standard EN 1748-2-1 - and with the corresponding operating parameters necessary for the ceramization. It is found that the ceramization no longer changes the smooth surface achieved in the grinding and / or polishing process.
  • Figs. 1 and 2/3 may also be carried out immediately after one another in a continuous process, i.
  • the processes according to FIGS. 2 and 3 can optionally take place immediately one after the other in the same plant.
  • a cleaning step can be carried out in order to free the surface from residues of the grinding / polishing agent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un procédé pour fabriquer une plaque vitrocéramique qui présente les étapes suivantes consistant à : préparer une plaque de verre brut ; poncer et/ou polir mécaniquement la plaque de verre brut après le ponçage et/ou polissage ; céramiser la plaque de verre brut pour obtenir la plaque vitrocéramique. On a découvert de manière surprenante que le temps ainsi que le travail de polissage étaient considérablement raccourcis lorsque le verre est poli avant l'étape de céramisation.
EP14719218.1A 2013-04-17 2014-04-14 Fabrication d'une plaque vitrocéramique Withdrawn EP2986578A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00787/13A CH707926A1 (de) 2013-04-17 2013-04-17 Herstellung einer Scheibe aus keramischem Glas.
PCT/CH2014/000047 WO2014169399A1 (fr) 2013-04-17 2014-04-14 Fabrication d'une plaque vitrocéramique

Publications (1)

Publication Number Publication Date
EP2986578A1 true EP2986578A1 (fr) 2016-02-24

Family

ID=51730646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14719218.1A Withdrawn EP2986578A1 (fr) 2013-04-17 2014-04-14 Fabrication d'une plaque vitrocéramique

Country Status (7)

Country Link
US (1) US20160075597A1 (fr)
EP (1) EP2986578A1 (fr)
JP (1) JP2016515506A (fr)
KR (1) KR20160005704A (fr)
CN (1) CN105246851A (fr)
CH (1) CH707926A1 (fr)
WO (1) WO2014169399A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018103661A1 (de) * 2018-02-19 2019-08-22 Schott Ag Transparenter Artikel aus Glaskeramik mit hoher Oberflächenqualität sowie Verfahren zu dessen Herstellung
CN113024121B (zh) * 2021-04-26 2023-10-27 赵国祥 一种微晶玻璃板生产工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1322796A (en) * 1970-07-14 1973-07-11 English Electric Co Ltd Surface-devitrified glass
US4059428A (en) * 1976-02-20 1977-11-22 Corning Glass Works Method of forming sagging mold from a glass ceramic
US4277522A (en) * 1977-01-03 1981-07-07 Corning Glass Works Coating glass-ceramic surfaces
JPH0686310B2 (ja) * 1989-04-28 1994-11-02 セントラル硝子株式会社 透明非膨張性結晶化ガラス
ATE248780T1 (de) * 2000-07-04 2003-09-15 Schott Glas Transluzente glaskeramik, verfahren zur herstellung einer transluzenten glaskeramik sowie deren verwendung
DE10344439B3 (de) * 2003-09-25 2005-02-10 Schott Ag Verfahren zum Herstellen von breit facettierten Glas-/Glaskeramikplatten und Glas-/Glaskeramikplatten mit breitem Facettenschliff
DE102004059728A1 (de) * 2004-12-11 2006-06-22 Schott Ag Verfahren zur Herstellung von Glas- oder Glaskeramik und insbesondere Glas- oder Glaskeramik-Artikel
DE102006023078B4 (de) * 2006-05-16 2012-04-19 Schott Ag Verfahren zur Herstellung von Glaskeramik-Artikeln mit verbesserter Oberfläche, Vorrichtung und Verwendung
US7875565B1 (en) * 2006-05-31 2011-01-25 Corning Incorporated Transparent glass-ceramic armor
DE102010023407B4 (de) * 2010-06-11 2017-02-02 Schott Ag Glaskeramik-Gegenstand für die Herstellung von Photovoltaik-Elementen
DE102010046991B4 (de) * 2010-09-30 2016-12-29 Schott Ag Hitzeschutzverglasung, deren Verwendung und Verfahren zu deren Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014169399A1 *

Also Published As

Publication number Publication date
JP2016515506A (ja) 2016-05-30
US20160075597A1 (en) 2016-03-17
CH707926A1 (de) 2014-10-31
CN105246851A (zh) 2016-01-13
WO2014169399A1 (fr) 2014-10-23
KR20160005704A (ko) 2016-01-15

Similar Documents

Publication Publication Date Title
DE69421371T2 (de) Verfahren und vorrichtung zum formen von glasscheiben und anwendung dieses verfahren zur herstellung von fenstern mit komplexer form
DE602004013132T2 (de) Verfahren zum biegen von glasscheiben durch pressen und saugen
DE69228482T2 (de) Feuerbeständiges Glas
DE2161217C3 (de) Mit Unter- und Überdruck arbeitendes Verfahren zur Herstellung einer aus einer Silikatglasscheibe, einer thermoplastischen Klebeschicht und einer Kunststoff-Folie bestehenden, optisch hochwertigen Verbundsicherheitsglasscheibe
EP2406192B1 (fr) Procédé de fabrication de composants coudés en vitrocéramique
EP2414297B1 (fr) Procédé et dispositif de céramisation de verres
EP3544809B1 (fr) Procédé de fabrication d'une vitre composite cintrée comprenant une vitre mince
EP1414761B2 (fr) Procede et dispositif de fabrication d'une plaque de verre trempee
DE1596573B2 (de) Verfahren zur Herstellung eines Gegenstandes aus Glaskeramik durch Verschmelzen von einzelnen Glaskörpern, Anwendung des Verfahrens zum Beispiel zur Herstellung von Teleskopspiegelrohlingen sowie nach diesem Verfahren hergestellter Teleskopspiegelrohling
EP2409834B1 (fr) Ensemble de vitre laminé et transparent, son procédé de fabrication et de courbure et son utilisation
DE102013105734B4 (de) Verfahren zum Wiederziehen von Glas
DE102006023078B4 (de) Verfahren zur Herstellung von Glaskeramik-Artikeln mit verbesserter Oberfläche, Vorrichtung und Verwendung
EP2334612B1 (fr) Procédé de production de verres trempés thermiquement
EP2986578A1 (fr) Fabrication d'une plaque vitrocéramique
DE2434609A1 (de) Verfahren und vorrichtung zum biegen von glastafeln
DE68905703T2 (de) Vorrichtung zum biegen von glasscheiben.
DE102004059728A1 (de) Verfahren zur Herstellung von Glas- oder Glaskeramik und insbesondere Glas- oder Glaskeramik-Artikel
DE19519504C2 (de) Verfahren zum Herstellen gebogener Verbundglasscheiben
DE202016008528U1 (de) Optische Komponente
EP1112974A2 (fr) Procédé de fabrication de feuilles de verre prétendues ou bombées
DE10062187A1 (de) Verfahren und Vorrichtung zum Keramisieren des Ausgangsglases einer Glaskeramik
WO2019105712A1 (fr) Procédé de fabrication d'une vitre revêtue imprimée
EP3755671A1 (fr) Article transparent en vitrocéramique ayant une haute qualité de surface ainsi que procédé pour sa fabrication
WO2014012696A1 (fr) Procédé de production de substrats en verre chimiquement précontraints
DE10226815B4 (de) Brennhilfsmittel für die thermische Behandlung von Gütern aus unterschiedlichen Materialien bei Einbrenn-Temperaturen und Verfahren zu seiner Herstellung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150925

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160607