Ship is easy to rust because of its special working condition. Removal of the rust from the ship surface is generally
required for maintaining ship. The feasibility of removing rust using pulsed laser has been confirmed by the past
researches. However, the general utilized laser, e.g., pulsed Nd: YAG laser with narrow pulse duration and high peak
power, suffers very low average power and throughput. TEA CO2 laser, which also has narrow pulse duration and high
peak power, is expected to obtain high throughout because it is easy to obtain high average power. This paper
investigated the feasibility and the efficiency of removal of rust from the ship steel using TEA CO2 pulsed laser. The
results show that TEA CO2 pulsed laser can effectively clean the rust by using suitable parameters without damage the
substrate. A cleaning threshold for stripping rust of power density exists. Also, the effect of the process parameters on
the efficiency and performance as well as the removal mechanism were studied in this paper.
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