Laser cleaning can be utilized as part of the preparation process prior to welding or as a final stage after welding!
As the laser removes the contaminants on the surfaces of the two pieces being welded, the resulting weld is a perfect mixture without inclusions. This is especially important in pressure vessel or critical weld applications where there is no room for error!
This is also true in the post welding process. If the weld is treated with a laser after the welding process, the resulting surface is clean and ready to paint or plate. Weld coating adhesion is a known weak spot in any project and will not stand the test of time. There is nothing worse than a beautiful structure which is corroding and peeling paint on the weld joints 1-2 years after being exposed to the weather!