抄録
The removal of stainless steel discoloration caused by the laser beam was tried using a scale remover with the arc-welding, but it was not removed. Therefore, comparison analysis about a color change of the stainless steel surface with the laser beam and the arc-welding was investigated. As a result, the main composition of discoloration caused by the arc-welding was Fe2O3 and that of the laser beam processing was Fe3O4. And the thickness of oxidation layer caused by the laser beam was 17 times of that of the arc-welding.
