Laser-guided double WIG welding of aluminum and corrosion-resistant steels

Simulated velocity field of the assist gas in laser cutting

Laser assisted cladding

Work of the group focusses on:

• Development of laser-assisted arc processes such as laser-assisted MAG welding and laser-assisted cladding
• Laser micro-welding of aluminum using solid-state and diode lasers
• Quality assurance and control using laser-optical spectroscopy
• Development of special equipment for laser material processing
• Numerical simulation of laser process and optimization

Current scientific work and projects:

• ReDoeCut „Reflective, diffractive optical elements for industrial cutting applications using high-power CO₂ lasers” (EU)
  • Generation of optimized intensity profiles for high-power CO₂ laser to enable faster and better cutting processes
  • Analysis of the influence of different intensity distributions on the flow mechanism at the cutting front
• SME Innovative Project HoDopp: High output deposition welding with a double wire feed using a non-transferred arc and laser based penetration depth control
  • Deposition rate increase of at least 300% to over 20 kg/h
  • Decrease of  dilution rate by over 80% to less than 5%
  • Decrease of need for expensive coating material
• IGF Project: Laser stabilized aluminum welding
  • Low energy input
  • High process speeds
  • Good seam quality
  • Exact energy input based on laser guidance
• QUAK “Quality evaluation system for caoutchouc mixtures”
  • Use of Laser Induced Breakdown Spectroscopy (LIBS)
  • Characterization of the homogeneity of caoutchouc mixtures
  • Set up of a mobile system