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Spectral Analysis of the Plasma Emission During Laser Welding of Galvanized Steel with Fiber Laser

  • Bo Chen*
  • , Zhiwei Chen
  • , Han Cheng
  • , Caiwang Tan
  • , Jicai Feng
  • *Corresponding author for this work
  • Harbin Institute of Technology Weihai
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Spectral information during the laser welding of galvanized steel was obtained. The plasma spectra were analyzed under different laser power and sheet gaps; signal filter method and statistical method were used to process the obtained spectral information. It was found that the plasma temperature increased with the increment of laser power, and plasma temperature and spectral intensity would be the least under proper sheet gaps. Statistical process control method was used to analyze the relationship between the welding quality and the spectral information, and it was found that the welding defects of the laser welding of galvanized steel could be automatically detected by the spectral information.

Original languageEnglish
Title of host publicationTransactions on Intelligent Welding Manufacturing
PublisherSpringer
Pages47-64
Number of pages18
DOIs
StatePublished - 2019

Publication series

NameTransactions on Intelligent Welding Manufacturing
ISSN (Print)2520-8519
ISSN (Electronic)2520-8527

Keywords

  • Galvanized steel
  • Laser welding
  • SPC
  • Spectral analysis

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