Effect of preheating on pure copper welding by hybrid laser system with blue laser and IR laser

S. Fujio, Y. Sato, E. Hori, R. Ito, S. Masuno, N. Abe, M. Tsukamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A hybrid laser system which combines preheating with a blue diode laser with welding with a single mode fiber laser was developed to realize a highly efficient laser welding of copper. With the hybrid laser system, the blue diode laser and the single mode fiber laser were combined coaxially and a stair shape beam profile was formed at the processing point. Each laser was irradiated to a copper sample and the output power of the blue diode laser was varied to investigate an effect of preheating with it on the welding with the single mode fiber laser. The melting and solidification dynamics of copper was evaluated with a high speed video camera and a thermo camera. As the results, it was found that the melting volume of copper and the temperature at the processing point increased by preheating with the blue diode laser. The copper wire with 2.0×3.5×50 mm was weld in 0.3sec by using hybrid laser with 1kW single mode fiber laser and 200W blue diode laser. Thus, it was concluded that a highly efficient welding of copper was achieved with the preheating with the blue diode laser.

Original languageEnglish
Title of host publicationLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI
EditorsCarlos Molpeceres, Jie Qiao, Aiko Narazaki
PublisherSPIE
ISBN (Electronic)9781510641815
DOIs
Publication statusPublished - 2021
Externally publishedYes
EventLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI 2021 - Virtual, Online, United States
Duration: 2021 Mar 62021 Mar 11

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11673
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLaser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVI 2021
Country/TerritoryUnited States
CityVirtual, Online
Period21/3/621/3/11

Keywords

  • Blue diode laser
  • Copper
  • Preheating
  • Single mode fiber laser
  • Welding

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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