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    • 4. 发明授权
    • Method of producing uniform light transmission fusion drawn glass
    • 均匀透光融合拉制玻璃的制造方法
    • US08210001B2
    • 2012-07-03
    • US12943282
    • 2010-11-10
    • Douglas Clippinger AllanKenneth William AniolekKiat Chyai KangEunyoung Park
    • Douglas Clippinger AllanKenneth William AniolekKiat Chyai KangEunyoung Park
    • C03B17/00C03B17/06
    • C03B17/064C03B17/067Y02P40/57
    • In a method of making a glass sheet using an overflow fusion downdraw process, a glass sheet quality metric level Q1 is selected, where Q1 is a measure of allowable retardation in the glass sheet. A glass ribbon temperature T1 at which a potential glass ribbon thermal artifact could occur in a glass ribbon while the glass ribbon is being drawn through a drawing machine enclosure is identified. A thermal artifact envelope E1 is determined, where E1 contains types of glass ribbon thermal artifacts allowable at T1 and Q1. A glass melt is overflowed from an isopipe to form a glass ribbon at the root of the isopipe. The glass ribbon is drawn below the root of the isopipe through the drawing machine enclosure to form the glass sheet. The drawing machine enclosure is altered at a location corresponding to where the glass ribbon would be at T1 such that during drawing of the glass ribbon the potential glass ribbon thermal artifact is not formed in the glass ribbon at T1 or, if the potential glass ribbon thermal artifact is formed in the glass ribbon at T1, the potential glass ribbon thermal artifact is within E1.
    • 在使用溢流熔融下拉法制造玻璃板的方法中,选择玻璃板质量度量级Q1,其中Q1是玻璃板中允许的延迟的量度。 鉴定玻璃带温度T1,当玻璃带通过拉丝机外壳被拉出时,在玻璃带中可能发生潜在玻璃带热伪影的玻璃带温度T1。 确定热伪影包络E1,其中E1包含在T1和Q1允许的玻璃带热伪影类型。 玻璃熔体从等压管溢出,在等压槽的根部形成玻璃带。 玻璃带通过拉丝机外壳拉到等压槽的根部下方,形成玻璃板。 在对应于玻璃带将处于T1的位置处的拉丝机外壳被改变,使得在拉制玻璃带期间,在T1处不会在玻璃带中形成潜在的玻璃带热伪影,或者如果潜在的玻璃带热 在T1的玻璃带中形成人造物,潜在的玻璃带热伪影在E1内。
    • 5. 发明授权
    • Thermal control of the bead portion of a glass ribbon
    • 玻璃带的胎圈部分的热控制
    • US08037716B2
    • 2011-10-18
    • US12394523
    • 2009-02-27
    • Kenneth William AniolekSteven Roy BurdetteLiam Ruan de PaorEunyoung Park
    • Kenneth William AniolekSteven Roy BurdetteLiam Ruan de PaorEunyoung Park
    • C03B17/00C03B17/06C03B21/02C03B25/00
    • C03B17/067Y02P40/57
    • Methods and apparatus for controlling the stress in, and the shape of, the glass ribbon (15) formed in a downdraw glass manufacturing process (e.g., the fusion downdraw process) are provided. In certain embodiments, the control is achieved by cooling the bead portions (21a, 21b) of the ribbon (15) at a rate which provides a heat flux Q″b at the thickest part of the bead (23a, 23b) which is given by Q″b=Q″q+ΔQ″, where (i) Q″q is the heat flux at a transverse position adjacent to the bead portion (21a, 21b) at which the ribbon's thickness equals 1.05*tcenter, where tcenter is the final thickness at the ribbon's center line (17), and (ii) ΔQ″≧(tb/tq−1)Q″q+10 kilowatts/meter2, where tb is the thickness of the thickest part of the bead portion. The cooling can take place along the entire length of the ribbon (15) or at selected locations, e.g., in the portion (50) of the draw which includes the glass transition temperature region (31) or the portion (60) of the draw where individual glass sheets (13) are cut from the ribbon (15).
    • 提供了用于控制在下拉玻璃制造工艺中形成的玻璃带(15)的应力和形状的方法和装置(例如,融合下拉工艺)。 在某些实施方案中,通过以给定的珠粒(23a,23b)的最厚部分提供热通量Q“b的速率冷却带状物(15)的胎圈部分(21a,21b)来实现控制, 通过Q“b = Q”q +&Dgr; Q“,其中(i)Q”q是邻近珠粒部分(21a,21b)的横向位置处的热通量,其中带的厚度等于1.05 * 中心线是丝带中心线(17)的最终厚度,(ii)&Dgr; Q“≥(tb / tq-1)Q”q + 10千瓦/米2,其中tb是最厚部分的厚度 珠部分。 冷却可以沿着带(15)的整个长度或者在选定的位置进行,例如在包括玻璃化转变温度区域(31)或拉伸部分(60)的拉伸部分(50) 其中单独的玻璃板(13)从带(15)切割。
    • 8. 发明授权
    • High static fatigue alumina isopipes
    • 高静态疲劳氧化铝异形管
    • US09199868B2
    • 2015-12-01
    • US13180052
    • 2011-07-11
    • Thomas D. KetchamJoseph J. McIntoshSteven M. MililloEunyoung Park
    • Thomas D. KetchamJoseph J. McIntoshSteven M. MililloEunyoung Park
    • C03B17/06C04B35/10
    • C03B17/064C04B35/10
    • Isopipes (13) for making a glass or a glass-ceramic using a fusion process are provided. The isopipes are made from an alumina material which has a higher static fatigue than existing alumina materials intended for use as isopipes. In particular, the alumina materials have times-to-failure (static fatigues) of greater than one hour at 1200° C. at an applied stress of 10,000 psi. These high levels of static fatigue allow alumina isopipes to replace zircon isopipes in the manufacture of high performance glass sheets by the fusion process, including glass sheets which are incompatible with zircon isopipes but compatible with alumina isopipes, e.g., chip and scratch resistant glass sheets which have high alkali contents.
    • 提供了使用熔融法制造玻璃或玻璃陶瓷的等离子管(13)。 等压槽由氧化铝材料制成,其具有比用作等压槽的现有氧化铝材料更高的静态疲劳。 特别地,在10,000psi的施加应力下,氧化铝材料在1200℃下具有大于1小时的时间 - 失效(静态疲劳)。 这些高水平的静态疲劳允许氧化铝等压槽通过熔融方法来替代高性能玻璃板的制造中的锆石等压槽,包括与锆石等压管不相容但与氧化铝等压槽相容的玻璃板,例如耐磨和耐划伤的玻璃板 碱含量高。