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    • 1. 发明申请
    • Glass tube for technical applications and process for the production thereof
    • 用于技术应用的玻璃管及其生产方法
    • US20060141181A1
    • 2006-06-29
    • US11296798
    • 2005-12-07
    • Andreas LangsdorfFrank BuellesfeldUlrich LangeMartin Zoettl
    • Andreas LangsdorfFrank BuellesfeldUlrich LangeMartin Zoettl
    • C03B9/16C03B29/00B28B11/00
    • C03B23/047C03B17/04C03B19/02C03B40/04H01H1/66H01H11/005Y10T428/131
    • The invention relates to glass tubes for technical applications, especially for electrical or magnetic components, such as reed switches for example. According to a first embodiment, the glass tube has an inner bore (23) and at least one cross-sectional constriction (X) whereby the relationship applicable between the respective cross-sectional constriction (X) and the diameter (d) of the circumference of inner bore (23) is: x greater than or equal to 0.02*d, more preferably x greater than or equal to 0.1*d. According to a further embodiment, the glass tube has at least one inner bore with at least one inner edge, wherein the radius of curvature of the respective inner edge is less than or equal to 0.1 mm and preferably less than or equal to 0.03 mm. The glass tube is used as a preform for a subsequent redrawing process. The preform is formed by casting a molten glass into a shaft in the interior of which is located a shaping means for defining the inner bore. In this case a gas cushion prevents direct contact of the molten glass with the inner circumferential wall of the shaft and/or the outer circumferential wall of the shaping means.
    • 本发明涉及用于技术应用的玻璃管,特别是用于诸如簧片开关的电气或磁性部件。 根据第一实施例,玻璃管具有内孔(23)和至少一个横截面收缩(X),由此可应用于各截面收缩(X)和圆周的直径(d)之间的关系 的内孔(23)为:x大于或等于0.02 * d,更优选x大于或等于0.1 * d。 根据另一实施例,玻璃管具有至少一个具有至少一个内边缘的内孔,其中相应内边缘的曲率半径小于或等于0.1mm,优选小于或等于0.03mm。 玻璃管用作预型件用于随后的重画工艺。 预成型件通过将熔融玻璃浇铸到轴内而形成,该轴位于用于限定内孔的成形装置的内部。 在这种情况下,气垫防止熔融玻璃与成形装置的轴的内周壁和/或外周壁的直接接触。
    • 4. 发明授权
    • Method for making globular bodies
    • 球状体的制备方法
    • US07377130B2
    • 2008-05-27
    • US10770311
    • 2004-02-02
    • Andreas LangsdorfFrank Buellesfeld
    • Andreas LangsdorfFrank Buellesfeld
    • C03B37/00
    • C03B40/04C03B19/102
    • The method of making globular or spherical bodies of optical quality includes filling receptacles (2) in a heat-resistant support (3) made of a porous material with glass gobs (1); conducting gas through the heat-resistant support so that a gas flow (4) passes through the support in a direction (14) opposite to a direction in which gravity acts; heating the heat-resistant support (3) to a temperature at which the glass gobs (1) have a viscosity of up to about 106 poise; maintaining the support (3) at this temperature for a predetermined time interval; and then cooling the support (3) to ambient temperature while continuing to provide the gas flow (4) through the support (3).
    • 制造光学质量的球形或球形体的方法包括在由具有玻璃料滴(1)的多孔材料制成的耐热支撑件(3)中填充容器(2); 通过所述耐热支撑件传导气体,使得气流(4)沿与重力作用方向相反的方向(14)穿过所述支撑件; 将耐热载体(3)加热至玻璃料滴(1)的粘度高达约10 -6泊的温度; 在该温度下保持支撑件(3)预定的时间间隔; 然后将支撑件(3)冷却至环境温度,同时继续通过支撑件(3)提供气流(4)。