Spot welding of copper conductors for electric motors

For this application a high number of welds per part have to be realized. With scanner and fiber laser, the laser beam can be positioned from weld to weld within milliseconds. Adjusted scanner movements melt the copper so that broad welding gaps can be bridged. Due to their high absorption into highly reflective materials such as copper, the fiber laser is the right tool for this application. Another advantage of laser welding with the fiber laser is the low heat input due to very short process times. Therefore damaging the isolations because of high temperatures can be avoided.

Spot welding at housings

Smallest welding spots even on large working fields.

Spot welding at axial circular weld seam

Optimum weld quality due to prime pulse-to-pulse stability < 1 % also coupled with smallest pulse energies.