Contamination suppression of coupling glass during vacuum laser welding

Yongki Lee, Jason Cheon, Byung Kwon Min, Cheolhee Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In vacuum laser welding, a laser beam is irradiated into a chamber through a coupling glass exposed to contamination. A conical protective system for the coupling glass is suggested, and contamination is analysed via simulation and experiments based on the conical component height and the gas flow rate. Stable descending flow is a key to suppressing the contamination, which affects the particle ascending velocity, horizontal deflection of particles and number of residual particles. The laser transmission area can be protected using a gas flow rate of 1.0 L min−1 or a cone height of 90 mm for the conical component. The conical protective system demonstrates excellent contamination suppression capability. The simulation-based approach can provide an effective design for the protective system.

Original languageEnglish
Pages (from-to)541-552
Number of pages12
JournalScience and Technology of Welding and Joining
Issue number7
Publication statusPublished - 2022

Bibliographical note

Funding Information:
We would like to acknowledge the technical & financial support from the KITECH (Korea Institute of Industrial Technology) of Republic of Korea (Grant EH-22-060).

Publisher Copyright:
© 2022 Institute of Materials, Minerals and Mining. Published by Taylor & Francis on behalf of the Institute.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics


Dive into the research topics of 'Contamination suppression of coupling glass during vacuum laser welding'. Together they form a unique fingerprint.

Cite this