公开(公告)号：US07653999B2

公开(公告)日：2010-02-02

申请号：US11095915

申请日：2005-03-31

申请人： Dirk B. Varo ,  Edward F. Stortz

发明人： Dirk B. Varo ,  Edward F. Stortz

IPC分类号： B21D21/00

CPC分类号： B21C23/22 ,  B21K21/14 ,  B23P15/00 ,  Y10T29/49387 ,  Y10T29/49391 ,  Y10T29/4981 ,  Y10T29/4998 ,  Y10T428/12292

摘要： A method is provided for successfully rolling co-extruded tubing into drums of a boiler bank. First, a co-extruded tube is provided, containing a carbon steel base tubing with an outer layer of high alloy tubing. Next, the outer layer of high alloy tubing is removed by machining in the area of the co-extruded tubing that is to be rolled into the drum. Then, the co-extruded tubing is swaged using multiple swaging steps and annealing treatments. The co-extruded tubing is swaged to the required diameter and wall thickness. Finally, co-extruded tubing is inserted, rolled, and sealed into the drums.

摘要翻译： 提供了一种方法，用于成功地将共挤出管道压入锅炉组的鼓中。 首先，提供共挤出管，其包含具有高合金管外层的碳钢基管。 接下来，通过在要被卷入滚筒中的共挤出管道的区域中机械加工去除高合金管的外层。 然后，使用多个模锻步骤和退火处理来模制共挤出管。 将共挤出的管材挤压成所需的直径和壁厚。 最后，将共挤出的管子插入，滚动并密封到滚筒中。