Research on laser cleaning process of 907 steel for marine instruments based on parallel multi-beam by SLM

Kongjun Gao; Ken Chen

doi:10.1117/12.2587593

2 December 2020 Research on laser cleaning process of 907 steel for marine instruments based on parallel multi-beam by SLM

Kongjun Gao, Ken Chen

Author Affiliations +

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 117173D (2020) https://doi.org/10.1117/12.2587593
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

With the miniaturization of high-power lasers and the rapid development of high-power spatial light modulators, the laser cleaning technology of marine instruments has received great attention in recent years. In this paper, the pulsed laser with a wavelength of 1064nm is used to generate 5×n parallel laser beams using a spatial light modulator to study the laser cleaning 907 steel of marine instruments whose surface is B-grade corrosion. The laser damage threshold of 907 steel is 2.89J / cm². Under the conditions of pulse laser energy density of 7J / cm², overlap rate of 60%, pulse width of 100ns, and pulse frequency of 100kHz, the surface of 907 steel can be completely cleaned by once. The surface cleanliness reaches the Sa2.5 standard, and the cleaning time per unit-area is inversely proportional to the number of laser beams. The parallel shape-adjustable multi-beam laser based on the spatial light modulator effectively improves the cleaning efficiency and flexibility of marine instruments.

Citation Download Citation

Kongjun Gao and Ken Chen "Research on laser cleaning process of 907 steel for marine instruments based on parallel multi-beam by SLM", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 117173D (2 December 2020); https://doi.org/10.1117/12.2587593

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available