公开(公告)号：US10315947B2

公开(公告)日：2019-06-11

申请号：US15647881

申请日：2017-07-12

申请人： Heraeus Quarzglas GmbH & Co. KG

发明人： Boris Gromann ,  Nigel Whippey

IPC分类号： B23K101/06 ,  B23K26/53 ,  C03B23/07 ,  C03B23/08 ,  C03B23/053 ,  B23K26/38 ,  B23K103/00

摘要： A method for forming a hollow cylinder, in a single step, into a quartz glass tube with a large outer diameter and high dimensional stability is provided. To produce the tube, the cylinder, while rotating, is softened in portions in a heating zone which is moved at a relative feed rate Va and the softened portion is radially expanded by a centrifugal force and/or internal overpressure applied in the hollow cylinder bore so as to form a deformation zone. The radial expansion of the softened portion is carried out at a location-dependent radial expansion rate Vr, the profile of which along the deformation zone has a maximum value Vr,max which is smaller than 20 cm/min. The temperature in a rear heating portion of the heating zone, assigned to the end of the deformation zone, is lower than in a front heating portion assigned to the beginning of the deformation zone.

公开(公告)号：US20150337455A1

公开(公告)日：2015-11-26

申请号：US14710374

申请日：2015-05-12

申请人： Heraeus Quarzglas GmbH & Co. KG

发明人： Boris Gromann ,  Nigel Whippey ,  Christian Schenk

IPC分类号： C30B15/10 ,  B23K20/00 ,  B23K20/02 ,  C30B29/18 ,  C03B15/14

CPC分类号： C30B15/10 ,  B23K20/002 ,  B23K20/02 ,  C03B5/08 ,  C03B5/42 ,  C03B5/43 ,  C03B15/14 ,  C03B17/04 ,  C30B29/18 ,  Y10T117/1032

摘要： The present invention refers to a method for producing a component by joining individual wall parts—especially for producing a melting crucible for use at a high operating temperature in a crucible pulling method for quartz glass, in that at least two wall parts of a refractory metal or of a base alloy of a refractory metal are provided, butt-joined to form a joint and joined together by sintering at a temperature above 1500° C. to form the component. To provide a component of improved tightness and to ensure improved sintering of the individual parts of the component, a sealant is inserted into the joint.Furthermore, the present invention refers to a component produced according to the method, particularly a melting crucible, particularly in a crucible pulling method for quartz glass, in which the joint between the butt-joined walls is closed in a gas-tight manner by a sealant.

摘要翻译： 本发明涉及通过连接各个壁部件来制造组件的方法，特别是用于生产用于石英玻璃的坩埚拉拔方法中的高操作温度下使用的熔化坩埚，其特征在于，难熔金属的至少两个壁部 或难熔金属的基体合金，对接接合形成接头，并通过在高于1500℃的温度下烧结而接合在一起以形成部件。 为了提供改善密封性的部件并且确保组件的各个部件的烧结改善，将密封剂插入接头中。 此外，本发明涉及根据该方法制造的部件，特别是熔化坩埚，特别是在石英玻璃的坩埚拉拔方法中，其中对接壁之间的接头以气密方式封闭 密封胶

公开(公告)号：US09725352B2

公开(公告)日：2017-08-08

申请号：US14974038

申请日：2015-12-18

申请人： Heraeus Quarzglas GmbH & Co. KG

发明人： Boris Gromann ,  Nigel Whippey

IPC分类号： C03B23/053 ,  C03B23/07 ,  C03B23/08

CPC分类号： C03B23/053 ,  B23K26/38 ,  B23K26/53 ,  B23K2101/06 ,  B23K2103/54 ,  C03B23/07 ,  C03B23/08

摘要： A method for forming a hollow cylinder, in a single step or in as small a number of steps as possible, into a quartz glass tube with a large outer diameter and high dimensional stability is provided. The cylinder, while rotating about a rotation axis, is softened in portions in a heating zone which is moved at a relative feed rate Va, and the softened portion is radially expanded by a centrifugal force and/or an internal overpressure applied in the hollow cylinder bore so as to form a deformation zone. The tube is continuously shaped with an outer diameter D2 which is greater than that of the hollow cylinder D1. The radial expansion of the softened portion is carried out at a location-dependent radial expansion rate Vr, the profile of which along the deformation zone has a maximum value Vr,max which is smaller than two times the feed rate Va.

公开(公告)号：US09938635B2

公开(公告)日：2018-04-10

申请号：US14710374

申请日：2015-05-12

申请人： Heraeus Quarzglas GmbH & Co. KG

发明人： Boris Gromann ,  Nigel Whippey ,  Christian Schenk

IPC分类号： C30B15/10 ,  C30B29/18 ,  C03B15/14 ,  B23K20/02 ,  B23K20/00 ,  C03B5/08 ,  C03B5/42 ,  C03B5/43 ,  C03B17/04

CPC分类号： C30B15/10 ,  B23K20/002 ,  B23K20/02 ,  C03B5/08 ,  C03B5/42 ,  C03B5/43 ,  C03B15/14 ,  C03B17/04 ,  C30B29/18 ,  Y10T117/1032

摘要： A method for producing a component includes joining individual wall parts, especially for producing a melting crucible for use at a high operating temperature in a crucible-pulling method for quartz glass, wherein at least two wall parts of a refractory metal or of a base alloy of a refractory metal are provided, butt-joined to form a joint and joined together by sintering at a temperature above 1500° C. to form the component. A sealant is inserted into the joint to provide a component of improved tightness and to ensure improved sintering of the individual parts of the component. A component produced according to the method, particularly a melting crucible, particularly in a crucible pulling method for quartz glass, has the joint between the butt-joined walls closed in a gas-tight manner by a sealant.