Lap welding method by beam welding, notably by laser welding on coated metal sheets, in particular galvanized sheet steel.

摘要

Procedure Overlap welding by beam welding, in coated sheet, wherein the coating a melting and evaporation or combustion, substantially smaller than the sheet material, and existing in the overlapping area, at least one opposing surface coated with a gap welding, characterized in that there is at least an absence of gap welding, with opposing surfaces located next to each other flat or adapted by shape, in the overlapping and welding the respective parameters of the energy reyo They are varied with an excitation frequency in a frequency window around a particular excitation frequency, and that is during the welding process, the capillary tube steam formed in the melting bath, and the excitation frequency is varied over time within this frequency window.