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Performance and Accuracy of the Shifted Laser Surface Texturing Method.

Jiří Martan1, Denys Moskal1, Ladislav Smeták1

  • 1New Technologies Research Centre (NTC), University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic.

Micromachines
|May 24, 2020
PubMed
Summary

A novel shifted laser surface texturing (sLST) method significantly boosts production speed for industrial applications. This advanced technique offers superior processing speeds and efficiency compared to classic methods, enabling faster manufacturing of functional surfaces.

Keywords:
heat accumulationhigh precisionhigh productivity and speedlaser micromachiningscanning strategyultrashort pulse laser

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Area of Science:

  • Materials Science
  • Manufacturing Engineering
  • Surface Engineering

Background:

  • Industrial production of functional surface textures requires high processing speeds.
  • Classic laser surface texturing methods face limitations in speed and efficiency.
  • Optimizing laser texturing processes is crucial for widespread industrial adoption.

Purpose of the Study:

  • To develop and evaluate a shifted laser surface texturing (sLST) method for enhanced production speed.
  • To compare the sLST method against classic texturing techniques in terms of speed, accuracy, and efficiency.
  • To identify optimal parameters and configurations for high-throughput industrial surface texturing.

Main Methods:

  • Development of the shifted laser surface texturing (sLST) method.
  • Comparative analysis of sLST against path filling and hatch methods.
  • Assessment of texture accuracy using optical measurements (size, circularity) and contact profilometry (depth).
  • Calculation of heat accumulation, laser usage efficiency, and processing speed.

Main Results:

  • The sLST method demonstrated no identified scanning speed limit up to 8 m/s, unlike classic methods limited to 0.15-0.7 m/s.
  • Texture accuracy showed similar deviations (6-10%) across all tested methods.
  • The sLST burst variant achieved an 11x increase in processing speed (146 mm²/min).
  • The sLST path filling variant excelled in processing efficiency (64 mm²/(min·W)), minimal heat increase (3 K), and laser usage (99%).

Conclusions:

  • The shifted laser surface texturing (sLST) method significantly enhances production speed and efficiency for functional surface textures.
  • sLST, particularly in combination with GHz burst machining and multispot approaches, offers a viable solution for industrial-scale surface texturing.
  • The developed sLST method overcomes the speed limitations of traditional techniques, paving the way for broader industrial applicability.