ELECTRICAL SEAM WELDING METHOD

摘要

PURPOSE:To reduce the production cost as well as to improve the stiffness of a weld zone by taking the compression deflection quantity in a press-fitting stage in the prescribed times the plate thickness of a stock at the distance among excess metals apexes formed by the pressure welding. CONSTITUTION:A joining face 5 is enlarged by adding a compression deformation in a pressure welding stage. In this way, an oxide and molten metal existed on the joining face 5 are destroyed and dispersed. The inner part 6 is exposed on the joining interface by applying the compression deformation further. The deformation compression quantity is taken >=3 times and <=6 times at least the thickness or width of the plate in the apparent interface enlargement (distance among excess metal apexes). In this way the product excellent in stiffness can be formed at low cost.