Laser brazing and welding with filler wire are well-established methods for joining metal component, which are especially used for brazing of car body components in industrial mass production. The highest requirements for the optical appeal of the seam are on the outer skin. A typical application is the laser brazing of galvanized sheets in tailgates as well as the roof / sidewall connection. In these applications, Laserline is also leading in the process development, and offers tailored multi-spot modules for optimizing the respective process.
LDF diode lasers in car body construction
A central application field for Laserline's diode lasers is the joining of shell components in the visible area of the vehicle, e.g. tailgates, roof seams, doors or C-pillars.
Besides the requirements of higher firmness and possibly a small heat-affected zone, as far as these visible seams are concerned, particularly high demands are made on the appearance of the welding seam.
Laser remote welding
To reach a quicker and more flexible process control when welding vehicle bodies or ships’ sides, laser remote welding is increasingly used. Because the laser beam is here directed from a distance of over one meter onto the workpiece, the application requires the combination of high laser power and high beam quality. Laserline LDF diode lasers with beam converter offer an optimal system solution for this special manner of keyhole welding.
Welding tailored blanks
At the laser-based tailored blanks welding using several sub sheets, shaped blanks are put together that will later be transformed to car body parts. However, the process is often afflicted with inefficient and easily soiled lasers that furthermore leave unpleasant metal splashes on the sheet and welding optic. Laserline's diode lasers generate an extremely calm molten pool that hardly creates a splash. They also resist dust and moisture-intense process environments.