Porosity is the most common defect in laser welding. This article explains why it happens and how vacuum laser welding eliminates it.
What Causes Porosity in Laser Welding?
Gas entrapment during solidification is the primary cause. When the weld pool freezes faster than dissolved gases can escape, microscopic voids form throughout the joint.
How Vacuum Eliminates Porosity
By welding at pressures below 1 mbar, vacuum laser welding removes the atmospheric gases that cause entrapment. The result is consistently pore-free welds across all material types.