01
Generate
A fibre laser produces controlled light delivered to a scanning process head.
01Assess the Surface
02Control the Process
03Verify the Result
Laser-cleaning technology
Understand the process before specifying it.
A practical explanation of laser ablation, process windows and method selection for offshore work.
Functional principle
Focused energy.
Controlled response.
Laser cleaning is a non-contact surface process. Controlled light is scanned over the work area; the unwanted layer responds differently from the underlying substrate and is removed through a combination of rapid heating, pressure and ablation effects.
The useful result comes from a validated process window—not laser power alone. Pulse behaviour, scan pattern, focus, travel speed, overlap and repeated passes are selected around the actual material and required finish.
02
Target
The beam is directed across a defined area using selected power, pulse, scan and focus settings.
03
Remove
The unwanted layer absorbs sufficient energy to detach, fragment or ablate before the substrate reaches the same response.
04
Capture
The resulting plume and particulates are collected close to source using material-appropriate extraction and filtration.
05
Verify
The surface is checked against the agreed reference, inspection method or downstream-process requirement.
Process window
What PICSA evaluates.
No single setting or equipment label proves suitability. These inputs shape the trial, controls and production plan.
Substrate and thicknessContaminant or coating chemistryLayer thickness and adhesionGeometry, edges and heat pathsRequired cleanliness or profileAccess, power, cooling and extractionProduction target and work interfacesAcceptance and inspection method
Method selection
Compare the whole
work package.
Laser, abrasive, chemical, water-based and mechanical processes each have strengths. PICSA compares the complete delivery context.
Laser may add value when
- The area is localised or geometrically complex
- Media recovery and clean-down are difficult
- Selective removal or a defined boundary matters
- The component is retained in place
- A dry, repeatable process supports the next stage
Another or combined method may lead when
- Large open areas drive the programme
- Very thick or variable layers dominate
- A specified abrasive anchor profile is mandatory
- Access prevents safe beam and plume control
- Production targets exceed the validated process window
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