There are many ways to repair the mold, such as EDM, TIG repair, laser surfacing technology, brush plating methods. At present, in the precision mold repair has been gradually replaced by laser welding.
Laser welding is the use of high-power coherent monochromatic photon flux focused on the laser beam as the heat source for welding. This welding method usually has continuous power laser welding and pulse power laser welding. The advantage of laser welding is that it does not need to be carried out in vacuum. The disadvantage is that penetration is inferior to electron beam welding. Laser welding, can carry out precise energy control, which can achieve precision device welding, it can be applied to many metals, in particular, can solve some difficult welding of metal and dissimilar metal welding.
