The laser cladding or laser weld overlay process employs a laser beam to fuse a broad range of materials from alloys to composites containing ceramic compounds onto a substrate. The process delivers more pure chemistry with a thinner, smoother overlay than traditional welding.
How does laser cladding compare to traditional welding? Unlike traditional welding, laser cladding has no mechanical impact on melt, so there is very low dilution (as low as 5%) of the deposited alloy. Traditional welding also generates intense heat that can distort the substrate—that’s not the case with laser cladding, due to its low thermal input.
“Hardfacing” refers to overlay materials of high hardness, designed to withstand the most demanding wear environments.