PROCESS FOR PRODUCING TUBULAR CERAMIC STRUCTURES OF NON-CIRCULAR CROSS SECTION
    10.
    发明申请
    PROCESS FOR PRODUCING TUBULAR CERAMIC STRUCTURES OF NON-CIRCULAR CROSS SECTION 审中-公开
    生产非圆形横截面管状陶瓷结构的方法

    公开(公告)号:WO2013033512A3

    公开(公告)日:2013-06-27

    申请号:PCT/US2012053305

    申请日:2012-08-31

    Abstract: A process for producing tubular ceramic structures (10) of non-circular cross section is provided which comprises: . a) rotating a mandrel-spindle assembly (45) having a non-circular external cross section corresponding to the non-circular internal cross section of the tubular ceramic structure (11) to be produced, the mandrel-spindle assembly (45) comprising a mandrel component (47) and a spindle component (43), the mandrel component (47) being a heat shrinkable polymeric tube of non-circular cross section the external surface of which corresponds to the internal surface of the tubular ceramic structure (11) of non-circular cross section to be produced and the internal surface of which defines a bore (71), the spindle component (43) having a non-circular cross section corresponding to that of the bore (71) of the mandrel (47) and being in close fitting but slidably removable contact therewith; . b) applying a ceramic-forming composition to the external surface of the mandrel component (47) of the rotating mandrel-spindle assembly (45) to produce a tubular ceramic structure (11) of non-circular cross section the internal surface of which is in contact with the external surface of the mandrel (47); . c) removing the spindle (43) from the bore (71) of the mandrel (47) to provide a mandrel-tubular ceramic structure assembly (70) in which the interior surface (75) of the tubular ceramic structure (11) of non-circular cross section remains in contact with the external surface of the mandrel (47); and, . d) heat shrinking the mandrel component (47,76) of the mandrel-tubular ceramic structure assembly (70) to cause the mandrel (47,76) to undergo shrinkage to a reduced size in which the external surface (77) of the mandrel (76) separates from the interior surface (75) of the tubular ceramic structure (11) of non-circular cross section facilitating removal of the mandrel (76) therefrom.

    Abstract translation: 提供了一种制造非圆形截面的管状陶瓷结构(10)的方法,包括: a)旋转具有对应于待制造的管状陶瓷结构(11)的非圆形内部横截面的非圆形外部横截面的心轴 - 心轴组件(45),所述心轴 - 心轴组件(45)包括 心轴部件(47)和主轴部件(43),心轴部件(47)是非圆形横截面的热收缩聚合物管,其外表面对应于管状陶瓷结构(11)的内表面 待生产的非圆形横截面并且其内表面限定孔(71),所述主轴构件(43)具有对应于心轴(47)的孔(71)的非圆形横截面,以及 与其紧密配合但可滑动地拆卸接触; 。 b)将陶瓷形成组合物施加到旋转心轴 - 心轴组件(45)的心轴部件(47)的外表面上,以制造其内表面为非圆形横截面的管状陶瓷结构(11) 与所述心轴(47)的外表面接触; 。 c)从所述心轴(47)的所述孔(71)中移除所述心轴(43),以提供心轴管状陶瓷结构组件(70),其中所述管状陶瓷结构(11)的内表面(75) - 圆形横截面保持与心轴(47)的外表面接触; 和,。 d)使芯棒管状陶瓷结构组件(70)的心轴部件(47,76)热收缩,以使心轴(47,76)经历收缩至尺寸减小,其中心轴的外表面(77) (76)与非圆形横截面的管状陶瓷结构(11)的内表面(75)分离,从而有助于从其中去除心轴(76)。

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