研究目的
Investigating the feasibility and demonstration of laser cleaning with adaptive control using novel sensors for surface cleaning in manufacturing processes.
研究成果
The CLEANSE cell demonstrated a closed-loop laser cleaning solution capable of removing TiAlN coating from WC substrate without damaging it, showing similar performance to as-received coated inserts in cutting tests. This system addresses the limitations of conventional cleaning methods and has potential for broader application in manufacturing.
研究不足
The study acknowledges the complexity of optimizing laser processing parameters and the potential for substrate damage without proper in-process control. The system's effectiveness is demonstrated on TiAlN-coated tungsten carbide, but applicability to other materials may require further investigation.
1：Experimental Design and Method Selection:
The study utilized a high power diode pump solid state UV laser for cleaning, incorporating a beam shaper, galvo scanner, and a novel in-process monitoring unit based on LIBS.
2：Sample Selection and Data Sources:
Tungsten carbide inserts coated with titanium aluminium nitride (TiAlN) were used.
3：List of Experimental Equipment and Materials:
Equipment included a Rigel U90 laser, Powerphotonics beam shaper, Digicube galvo scanner, and a monitoring unit developed by ALT.
4：Experimental Procedures and Operational Workflow:
The system used Mach 4 motion control software to trigger the laser and monitoring system, with the monitoring unit measuring the intensity of the Ti signal to determine cleanliness.
5：Data Analysis Methods:
The ablation threshold and removal rate were measured using optical microscopy and focus variation microscopy, with SEM and EDX for surface morphology and elemental analysis.
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HR2000+ spectrometer
HR2000+
Ocean Optics
Analyzes the plasma generated during the laser coating removal process.
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Hitachi TM3000 table top scanning electron microscope
TM3000
Hitachi
Evaluates the surface morphology of the laser irradiated area.
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Joel 7000F SEM
7000F
Joel
Equipped with energy-dispersion X-ray spectroscopy (EDX) for elemental analysis.
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Rigel U90
U90
Powerlase
High power diode pump solid state UV laser used for cleaning.
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beam shaper
Powerphotonics
Modifies the laser beam profile to a square top hat distribution.
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Digicube galvo scanner
Laser Control Systems
Used for directing the laser beam.
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Alicona focus variation surface profile meter
Alicona
Measures the removal rate of the coating and changes in surface roughness.
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