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    • 10. 发明申请
    • METHOD AND APPARATUS FOR PRODUCING A TUBE OF GLASS
    • 用于生产玻璃管的方法和装置
    • US20160318789A1
    • 2016-11-03
    • US15140031
    • 2016-04-27
    • Heraeus Quarzglas GmbH & Co. KG
    • Boris GROMANNMatthias SÖHNAlexander BLUMENAU
    • C03B23/08C03B23/07C03B23/043C03B23/053
    • C03B23/08C03B23/043C03B23/045C03B23/053C03B23/07
    • A method and apparatus are provided for producing a tube of glass by zonewise heating and softening of a hollow cylinder by a movable heating zone while rotating about its rotation axis. The glass tube is continuously formed by radial expansion of the softened region under action of centrifugal force and/or internal overpressure applied in the hollow-cylinder bore. The method and apparatus make it possible to deform the hollow cylinder in a single or a small number of forming steps into a glass tube having a larger outer diameter and high dimensional accuracy by determining a circumferential position at which the wall thickness is comparatively small, and during heating and softening of the rotating hollow cylinder a coolant is dispensed from a coolant source onto the deformation zone only when or predominantly when the circumferential position having the comparatively small wall thickness passes the coolant source.
    • 提供了一种方法和装置,用于通过在围绕其旋转轴线旋转的同时通过可移动加热区域的中空圆柱体的加热和软化来制造玻璃管。 玻璃管在离心力作用下和/或内部超压施加在中空缸孔中的作用下,通过软化区的径向膨胀连续地形成。 该方法和装置使得可以通过确定壁厚相对较小的圆周位置,将单个或少数成形步骤中的中空圆筒变形为具有较大外径和高尺寸精度的玻璃管,以及 在旋转的中空圆柱体的加热和软化期间,只有当主要是具有较小壁厚的周向位置通过冷却剂源时,冷却剂才从冷却剂源分配到变形区上。