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    Glass-to-metal seal
    9.
    发明授权
    Glass-to-metal seal 失效
    玻璃到金属密封

    公开(公告)号：US3858378A

    公开(公告)日：1975-01-07

    申请号：US23910672

    申请日：1972-03-29

    Applicant: CORNING GLASS WORKS

    Inventor： ALLEN RICHARD E ,  FRAZIER JOHN F ,  SMITH WILLIAM C

    IPC: C03C27/04 ,  F16J15/02 ,  F16B5/08

    CPC classification number: C03C27/046 ,  F16J15/02 ,  Y10T403/217 ,  Y10T403/35

    Abstract: A metal member is hermetically sealed to the surface of a wall of a glass member or article such as a reflector portion for a sealed beam automobile headlight lamp. The metal member preferably supports an electrical lead-in conductor which is inserted through a passage embodied in a wall of the glass article for the purpose, for example, of making an electrical connection to an electrical component such as a filament used in a completed headlight lamp using the glass article. The hermetic seal is made between the surface of the glass member which surrounds the passage and a surface of the metal member which is positioned adjacent the glass surface surrounding the passage. In making the hermetic seal, the surface of the glass surrounding the passage is metallized by providing it with an annulus or band of silver paint or other solderable, hermetic and adherent material having a precious metal content and, therefore, having a relatively high temperature coefficient of thermal expansion. The band or annulus and the surface of the metal member facing the annulus are tinned with solder and are then soldered to each other. By using, for the metal member, a material having a relatively low coefficient of thermal expansion, the relatively high expansion silver paint-solder combination is compensated for and a thermal shock resistant glass-to-metal seal results. In a modified form of the invention, the metal member is provided with an orifice or passage for purpose of exhausting a complete lamp.

    Abstract translation: 金属构件气密地密封到玻璃构件或物品的表面，例如用于密封梁汽车前照灯的反射器部分。 金属构件优选地支撑电引入导体，该导电导体通过实施在玻璃制品的壁中的通道插入，用于例如与电气部件例如用于完成的前灯中的灯丝的电连接 灯使用玻璃制品。 在围绕通道的玻璃构件的表面和与围绕通道的玻璃表面相邻的金属构件的表面之间形成气密密封。 在制造气密密封时，通过为其提供具有贵金属含量的银漆或其它可焊接，密封和粘附材料的环带或带，因此具有相对较高的温度系数 的热膨胀。 带或环和金属构件面向环形空间的表面用焊料镀锡，然后彼此焊接。 通过对金属构件使用具有相对低的热膨胀系数的材料，可以补偿相对高的膨胀银涂料 - 焊料组合并产生耐热冲击的玻璃 - 金属密封。 在本发明的改进形式中，金属构件设置有用于排出整个灯的孔或通道。

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