公开(公告)号：US07476824B2

公开(公告)日：2009-01-13

申请号：US11169331

申请日：2005-06-28

申请人： Venkatasubramanian Ananthanarayanan ,  Andrzej Marian Pawlak ,  James M. Payne ,  Deepak K. Sharma ,  Kenneth E Johnson

发明人： Venkatasubramanian Ananthanarayanan ,  Andrzej Marian Pawlak ,  James M. Payne ,  Deepak K. Sharma ,  Kenneth E Johnson

IPC分类号： B23K11/00

CPC分类号： B23K11/002 ,  B23K2101/14

摘要： Welding apparatus includes a first electrode having an electrode surface adapted to contact an outward end fold of a heat-exchanger tube which is positioned in an orifice of a tubesheet with the fold contacting an outward-facing side of the tubesheet. A second electrode has an electrode surface adapted to contact the outward-facing side of the tubesheet. Another welding apparatus includes a first electrode having an electrode surface adapted to contact an end of a heat exchanger tube positioned in an orifice of a tubesheet. The first electrode is movable to create an outward end fold in the tube and deform the fold against the outward-facing side of the tubesheet. Another welding apparatus includes a second electrode having an electrode surface adapted to contact the outward-facing side of a tubesheet and having cutouts which surround each of a plurality of heat-exchanger tubes and which are adapted to receive a first electrode.

摘要翻译： 焊接装置包括具有电极表面的第一电极，该电极表面适于接触定位在管板孔口中的热交换器管的外端折叠部，该折叠部与管板的向外侧接触。 第二电极具有适于接触管板的向外侧的电极表面。 另一种焊接装置包括具有电极表面的第一电极，该电极表面适于接触位于管板的孔中的热交换器管的端部。 第一电极是可移动的，以在管中产生向外的端部折叠，并且将折叠变形抵靠管板的向外侧。 另一种焊接装置包括具有电极表面的第二电极，该电极表面适于与管板的向外侧接触并且具有围绕多个热交换器管中的每一个并且适于接收第一电极的切口。

公开(公告)号：US07253372B2

公开(公告)日：2007-08-07

申请号：US11169293

申请日：2005-06-28

申请人： Venkatasubramanian Ananthanarayanan ,  James M. Payne ,  Deepak K. Sharma ,  Kenneth E Johnson ,  Andrzej Marian Pawlak

发明人： Venkatasubramanian Ananthanarayanan ,  James M. Payne ,  Deepak K. Sharma ,  Kenneth E Johnson ,  Andrzej Marian Pawlak

IPC分类号： B23K11/11

CPC分类号： B23K11/002 ,  B23K2101/14

摘要： One method for welding includes obtaining a heat-exchanger tube having an outward fold. The tube is inserted at least partially through the orifice of a tubesheet with the fold contacting one of the outward and inward facing sides of the tubesheet. A first electrode is positioned in contact with the outward fold and a second electrode in contact with the one side of the tubesheet. Another method for welding includes obtaining a heat-exchanger tube having a tube end. The tube is inserted at least partially through the orifice of a tubesheet. A first electrode is positioned in contact with the first tube end and a second electrode is positioned in contact with one of the outward and inward facing sides of the tubesheet. The first electrode is moved against the first tube end to create an outward fold with the outward fold contacting the one side of the tubesheet.

摘要翻译： 一种焊接方法包括获得具有向外折叠的热交换器管。 该管被至少部分地插入管板的孔中，该折叠部接触管板的向外侧和向内侧之一。 第一电极定位成与向外折叠接触，并且第二电极与管板的一侧接触。 另一种焊接方法包括获得具有管端的热交换器管。 管至少部分地插入管板的孔中。 第一电极定位成与第一管端接触，并且第二电极定位成与管板的向外侧和向内侧之一接触。 第一电极抵靠第一管端移动以产生向外的折叠，其中向外的折叠接触管板的一侧。