Joining two steel sheets with laser weld seam involves passing laser beam over sheet at such a speed that strain forces are produced in upper region of sheet and stress forces in lower region

摘要

Method involves passing a laser beam over the surface of one of the sheets (10,11) to be welded to produce thermal stresses and a bending angle before the welding process. The laser beam is passed over the sheet at such a speed that strain forces are produced in the upper region of the sheet and stress forces in the lower region. The laser beam is passed over the sheet immediately adjacent to the weld seam to be produced.