Simulation and experimental verification of water-guided laser processing by a water-gas shrinkage laminar flow method

Guangyi Zhang; Yaowen Wu; Zheng Zhang; Chunhai Guo; Wenwu Zhang

doi:10.1117/12.2539128

19 November 2019 Simulation and experimental verification of water-guided laser processing by a water-gas shrinkage laminar flow method

Guangyi Zhang, Yaowen Wu, Zheng Zhang, Chunhai Guo, Wenwu Zhang

Author Affiliations +

Proceedings Volume 11183, Advanced Laser Processing and Manufacturing III; 111830X (2019) https://doi.org/10.1117/12.2539128
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

Water-guided laser processing technology can be used for precision machining of refractory materials such as superalloy and composite materials. Compared with traditional short-pulse laser processing, it has the advantages of less thermal damage, smaller taper and greater depth, cleaner surface and so on. However, the existing technologies have two key problems of low laser coupling power and poor process reliability, which seriously affect laser processing efficiency and workpiece processing quality. Based on this situation, a water-gas shrinkage-guided high-power laser processing (WSLP) technology is proposed innovatively in this paper. Firstly, the laminar shrinkage mechanism is analyzed. secondly, the characteristics of water-gas contraction and total reflection conducting laser are investigated by simulation. The results show that water-gas compressibility effect can make water-jet compressed to within 0.1mm; and some systematic disturbance does not affect the laser coupling efficiency because of the total reflection effect at the water-gas interface, which verifies the stability and reliability of the system. In addition, water-gas shrinkage coupling experiment and total reflection conducting laser experiment are completed. The experiment result shows that the laser coupling efficiency can reach up to 93%; The feasibility of the system processing is verified by the tests.

Citation Download Citation

Guangyi Zhang, Yaowen Wu, Zheng Zhang, Chunhai Guo, and Wenwu Zhang "Simulation and experimental verification of water-guided laser processing by a water-gas shrinkage laminar flow method", Proc. SPIE 11183, Advanced Laser Processing and Manufacturing III, 111830X (19 November 2019); https://doi.org/10.1117/12.2539128

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