One can no longer imagine a car parts production line without a laser welding system. This technology is a prerequisite for the use of compact, weight-optimised components, and consequently of energy-efficient vehicles. The accurate, dosage-adjustable, concentrated energy of the laser beam allows for high welding speeds and causes minimal warpage at the welding point. It also ensures that components can be finish-machined cost-effectively and subsequently welded, without requiring further processing before going to the assembly line.