Process for producing a guide tube of a nuclear reactor fuel assembly, mandrel for forming the guide tube, and the guide tube obtained
    1.
    发明授权
    Process for producing a guide tube of a nuclear reactor fuel assembly, mandrel for forming the guide tube, and the guide tube obtained 有权
    用于制造核反应堆燃料组件的导管,用于形成导管的心轴和所获得的导向管的方法

    公开(公告)号:US06718811B2

    公开(公告)日:2004-04-13

    申请号:US09348761

    申请日:1999-07-07

    IPC分类号: B21B1708

    摘要: A tubular blank (22) is rolled on a mandrel (14) in a pilgrim rolling mill. In a first rolling stage, a first part of the blank (22) is rolled on a first part (18,19) of the mandrel (14), with a reduction of the outside diameter of the blank (22) to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to one of a first wall thickness (e1) and a second wall thickness (e2) exceeding the first wall thickness (e1). The mandrel (14) is advanced in the axial direction. A second part of the blank (22) is rolled on a second part (20,21) of the mandrel spaced from the first part in the axial direction with a reduction of the outside diameter of the blank to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to the other of the first wall thickness (e1) and second wall thickness (e2).

    摘要翻译: 管状坯料(22)在朝圣者轧机的心轴(14)上滚动。 在第一滚动阶段中,坯料(22)的第一部分在心轴(14)的第一部分(18,19)上滚动,坯料(22)的外径减小到外径 和将坯料(22)的壁厚减小到超过第一壁厚(e1)的第一壁厚(e1)和第二壁厚(e2)中的一个。 心轴(14)沿轴向前进。 坯料(22)的第二部分在芯轴的第二部分(20,21)上滚动,心轴的第二部分(20,21)与第一部分沿轴向间隔开,同时坯料的外径减小到导管的外径 以及将坯料(22)的壁厚减小到第一壁厚(e1)和第二壁厚(e2)中的另一个。