Conduction Mode vs. Keyhole Mode Laser Welding

There are two types of heating “modes” used to describe the resulting melting of the metal during laser welding. These are called “conduction mode” and “keyhole mode” heating. These modes of heating are created by different power densities and produce different results. Power density is defined as the power of the laser beam divided by […]

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When the Laser Beam goes Out of Focus during a High Speed Fiber Laser Weld

I was setting up a demonstration of high-speed fiber laser welding using a scanner in EWI’s laser lab. I mounted a ScanLab scanner to EWI’s high speed motion system to manipulate and focus the laser beam. The laser used was a 600-watt IPG single mode fiber laser. I programmed the motion system to move the […]

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