• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Thin float glass, e.g. in the range 3 mm to 1.5 mm, is manufactured by forming a ribbon of float glass and attenuating the ribbon by applied tractive effort. Distortion in the eventual ribbon is avoided when operating at high load by creating thermal homogeneity in the molten metal of the bath supporting the ribbon in the region of attenuation and where its viscosity is in the range 105.25 to 106.75 poises.
    公开号:SU959620A3
    申请号:SU711668632
    申请日:1971-06-04
    公开日:1982-09-15
    发明作者:Альфред Дикинсон Джордж
    申请人:Пилкингтон Бразерз Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD OF MANUFACTURING. SHEET GLASS
    I
    The isolation is related to methods for producing float glass.
    A known method of producing sheet glass, in which glass melt is fed to the surface of the molten metal in a bath with mixed threads, and glass ribbon is drawn out of it, and accelerated to the inside. 1 The disadvantage of the known method is -. The formation of defects on the lower surface of the glass ribbon.
    This is due to the fact that at high speeds of a continuous movement of a glass ribbon over the surface of the molten metal in the bath (for example, 15 40 m / Mits it captures the surface layers of the molten metal. The molten metal is displaced from the high-temperature part of the bath to the part of the bath. in which the molten metal 20 has a lower temperature. As a result, the molten metal from the lower temperature part of the bath dowels along the bottom and the side walls of the van in the opposite direction.
    . In this way, the molten metal with a lower temperature falls into the part of the bath in which it has a specific temperature.
    This leads to such an undesirable effect as the appearance of local temperature gradients along the surface of the molten metal, along which the glass ribbon is mixed. Moreover, local temperature gradients arise under the zones of the glass ribbon, in which there is an intensive decrease in its thickness, causing undesirable local deformations of the glass ribbon, especially in its lower layers. This is due to the fact that the viscosity of the glass of the tape in the zone of intensive reduction of its thickness is such that the arising distortions are stabilized.
    The aim of the invention is to reduce the deformation of the contact of the molten metal with the surface of the ribbon of glass with the molten metal.
    This goal is achieved by the fact that according to the method of manufacturing sheet
    the glass, which implies that glass melt is supplied to the surface of the molten metal in a bath with stirring streams and a ribbon of glass is pulled out of it, it accelerates; the stirring streams in the molten metal create glass belts under the acceleration zones, and the glass’s viscosity is kept within - ± o6.75 p, and these streams are directed from the edges of the bath to its longitudinal axis.
    To create displacement flows, the bath is equipped with linear induction motors installed symmetrically, in pairs and directly above the glass ribbon, the phases of the electric power sources of which are chosen so as to create molten metal flows in the bath induced by electromagnetic forces. These streams are directed from the sides of the bath to its longitudinal axis. They create mixing flows in the surface layers of the molten metal, which prevent the possibility of localized circulating molten metal in the surface layers, along which the glass ribbon moves progressively, the thickness of which is intensely reduced. As a result, the molten metal in the bath is thermally homogeneous, which allows To effectively reduce the degree of possible deformation of the lower layers of glass tape.
    Additional linear induction motors in pairs can be installed at the beginning of the rear constricted part of the bath. They create molten metal streams from the central part of the bath to its side walls. Before each of these linear induction motors, on the side of the chute for supplying the glass melt, reflective walls connected to the side walls of the bath are installed over the entire depth of the molten metal. These walls are designed for
    deviations created by additional linear induction doubles of molten metal flows in the direction of translational movement
    glass ribbons, i.e. to the back of the bath. Additional linear induction motors must be adjusted so that they affect the deep layers of the molten
    metal, to capture flows of molten h-hetall moving from the back wall of the bath along the bottom and to direct them back to the back wall. As a result of this relatively cold
    molten metal moving from the back wall of the bath. Due to the transfer of metal there, moving with great speed, the glass ribbon does not enter the bath zones in which the glass is in a critical state due to an intense decrease in the thickness of the glass ribbon.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A method of making sheet glass, in which glass mass is fed to the surface of the molten metal in a bath with stirring streams and a ribbon of glass is pulled out of it, it is accelerated in particular by the fact that, in order to reduce the deformation of the glass ribbon surface in contact with the molten metal, the molten metal is created under the zones of acceleration of a ribbon of glass, and the viscosity therein is maintained within the limits of the s, p and these streams are directed from the edges of the bath to its longitudinal axis. Sources of information accepted in Attention in examination 1. USSR Patent No. 242О72, cl. C 03 B 18 / O2, 1965 (prototype),
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    GB1241873A|1971-08-04|Improved process and installation for the production of a ribbon of flat glass
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    同族专利:
    公开号 | 公开日
    TR17270A|1975-03-24|
    ES391947A1|1973-06-16|
    NL151684B|1976-12-15|
    CA939906A|1974-01-15|
    NL7107622A|1971-12-07|
    FI52963B|1977-09-30|
    DK130408B|1975-02-17|
    GB1315365A|1973-05-02|
    RO59037A|1976-02-15|
    CH529075A|1972-10-15|
    IE35627B1|1976-04-14|
    DE2127491A1|1972-01-20|
    BE768133A|1971-12-06|
    CS164300B2|1975-11-07|
    LU63271A1|1971-09-09|
    FI52963C|1978-01-10|
    FR2094030B1|1978-06-02|
    YU202078A|1982-05-31|
    DK130408C|1975-07-14|
    IE35627L|1971-12-04|
    YU39158B|1984-06-30|
    ES391934A1|1973-06-16|
    DE2127491C3|1978-06-08|
    KR800000775B1|1980-08-08|
    DE2127491B2|1977-10-13|
    FR2094030A1|1972-02-04|
    ZA713315B|1973-01-31|
    AT314128B|1974-03-25|
    US3771985A|1973-11-13|
    SE386154B|1976-08-02|
    ZM7271A1|1973-02-21|
    JPS5327730B1|1978-08-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA733906A|1966-05-10|A. Dickinson George|Manufacture of flat glass|
    LU36044A1|1957-05-03|
    GB1147637A|1965-08-19|1969-04-02|Pilkington Brothers Ltd|Improvements in or relating to the manufacture of flat glass|
    GB1085010A|1965-08-25|1967-09-27|Ford Motor Co|Float method of manufacturing glass|
    GB1123222A|1965-11-19|1968-08-14|Pilkington Brothers Ltd|Improvements in or relating to the manufacture of flat glass|
    US3481729A|1967-05-11|1969-12-02|Ford Motor Co|Glass manufacturing chamber containing buoyant side wall liners of graphite|
    US3607203A|1967-07-07|1971-09-21|Nippon Sheet Glass Co Ltd|Float glass apparatus with longitudinal dams and metal flow control means|
    US3607199A|1967-09-29|1971-09-21|Nippon Sheet Glass Co Ltd|Float glass apparatus with flow control dams|DE2608052C2|1976-02-27|1982-12-30|Vereinigte Glaswerke Gmbh, 5100 Aachen|Liquid pump for the molten metal in a float glass plant|
    US4046549A|1976-05-21|1977-09-06|Libbey-Owens-Ford Company|Retractable support for float glass apparatus|
    FR2471954B1|1979-12-21|1984-07-20|Saint Gobain|
    US4305745A|1980-04-04|1981-12-15|Ppg Industries, Inc.|Method of attenuating glass in a float process|
    US4375370A|1980-04-04|1983-03-01|Ppg Industries, Inc.|Thermal control in a method of bidirectionally attenuating glass in a float process|
    US4354866A|1980-04-04|1982-10-19|Ppg Industries, Inc.|Method of bidirectionally attenuating glass in a float process with edge cooling|
    JPH0361619B2|1983-07-07|1991-09-20|Asahi Glass Co Ltd|
    JPH07108779B2|1987-08-24|1995-11-22|旭硝子株式会社|Float glass manufacturing method|
    US7122242B2|2002-04-05|2006-10-17|Ppg Industries Ohio, Inc.|Wedge shaped glass and methods of forming wedged glass|
    DE102004052568B4|2004-10-29|2012-02-02|Schott Ag|Thin glass substrate and method of making thin glass|
    DE102005033908B3|2005-07-15|2006-05-18|Schott Ag|Cooling process to manufacture plate glass capable of conversion to ceramic condition|
    US8627684B2|2007-10-29|2014-01-14|Corning Incorporated|Pull roll apparatus and method for controlling glass sheet tension|
    JP5565062B2|2010-04-15|2014-08-06|旭硝子株式会社|Float glass manufacturing apparatus and float glass manufacturing method|
    FR2978758B1|2011-08-02|2013-08-02|Saint Gobain|GLASS FLOATING SPEAKER|
    US9593033B2|2013-10-04|2017-03-14|Corning Incorporated|Glass manufacturing apparatus and method for manufacturing glass sheet|
    CN107244125B|2017-05-15|2020-06-16|张家港康得新光电材料有限公司|Window film and window with same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB2703970|1970-06-04|
    US14713671A| true| 1971-05-26|1971-05-26|
    KR7101074A|KR800000775B1|1970-06-04|1971-08-03|Manufacture of float glass|
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