公开(公告)号：US20080116175A1

公开(公告)日：2008-05-22

申请号：US11942135

申请日：2007-11-19

申请人： Gaia Ballerini ,  Francis BRIAND ,  Philippe Lefebvre

发明人： Gaia Ballerini ,  Francis BRIAND ,  Philippe Lefebvre

IPC分类号： B23K26/12 ,  B23K26/20

CPC分类号： B23K26/0604 ,  B23K26/24

摘要： The invention relates to a welding process using a laser beam (FL1, FL2) to weld at least one metal workpiece, preferably to weld two metal workpieces together, in which: a first laser beam (FL1) is employed and said first laser beam (FL1) is focused so that it strikes at least one workpiece to be welded and creates a keyhole-type capillary (KH) having a keyhole opening; a second laser beam (FL2) is used and said second laser beam (FL2) is focused in the keyhole (KH) opening created by said first laser beam (FL1); and the workpiece or workpieces are progressively welded by melting the metal of the workpiece or workpieces to be welded at the points of impact of the laser beams (FL1, FL2) with the workpiece or workpieces to be welded. The depth of penetration (x) of the first laser beam (FL1) is greater than the depth of penetration (y) of the second laser beam (FL2).

摘要翻译： 本发明涉及使用激光束（FL 1，FL 2）焊接至少一个金属工件的焊接工艺，优选地将两个金属工件焊接在一起，其中：使用第一激光束（FL 1），并且所述第一 聚焦激光束（FL 1），使其至少冲击一个待焊接的工件，并产生具有锁孔的钥孔型毛细管（KH）; 使用第二激光束（FL 2），并且所述第二激光束（FL 2）聚焦在由所述第一激光束（FL 1）产生的锁孔（KH）开口中; 通过在被焊接的工件或工件的激光束（FL 1，FL 2）的冲击点处熔化待焊接的工件的金属或待焊接的工件的工件或工件逐渐焊接。 第一激光束（FL 1）的穿透深度（x）大于第二激光束（FL 2）的穿透深度（y）。