laser welding system can be divided into energy conduction welding and strong penetration welding according to the difference of the spot energy density after laser focusing.


1. Laser energy conduction welding

The optical power density is low, usually below 105W/cm2. The laser powers the surface of the welded workpiece, heating the metal work surface to between the melting point and boiling point. The surface of the metal material converts the ingested light energy into heat energy, the temperature of the surface area is continuously increased and burnt, which is transferred to the interior of the steel by heat conduction, ensuring the expansion of the melt, through cooling, the welding stage and the welding seam forming. The welding principle is similar to TIG welding, which is actually called heat conduction welding.

2. Laser deep penetration welding (small hole welding)

The laser energy density acting on the metal surface exceeds 105W/cm2, the high-power laser beam acts on the surface of your steel, causing nearby melting and "small grooves", the laser beam penetrates from the "small opening" to the molten pool, even if the steel is in A modest golf hole melts in front of the hole, and the molten aluminum also moves to the back again through a modest opening and resolidifies to form a weld.

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