Precision welding is a very challenging task for many metals used in industry. Super Pulse Technology (SPT), patented pulse modulation developed by Sigma Laser, offers a new, innovative opportunity to precisely weld such critical metal alloy materials.

Carbon content and cooling rates of molten baths are critical to steels’ welding suitability. SPT controls the melting bath dynamics and influences cooling speed, which can minimise the risk of problems which often occur, such as crack formation and problems with fusion.

High pulse peak power in pulsed systems may quickly lead to overheating of the metallic melt or welding seam defects. This is exactly where you can counteract the melting bath temperature with SPT thanks to individual settings.

In comparison to traditional laser welding systems, SPT can influence solidification morphology, including the rate of nucleation. This increases the plastic ductility of the compound with different materials such as titanium, aluminium or stainless steel. Of particular importance is combined pulse shaping and modulation when welding refractory metals. Excellent results can be achieved if the melt is supercooled using pulse modulation.