| Laser Source | Pulsed fiber laser or continuous-wave fiber laser | Pulsed systems are generally preferred for controlled paint removal; continuous-wave systems suit high-throughput work where heat input is acceptable. | Confirm pulse control, thermal input, maintenance requirements, and compatibility with the coating and base material. |
| Rated Laser Power | 100–300 W for light-duty work; 500–1,000 W for general industrial use; above 1,000 W for heavy coatings and large surfaces | Lower power is easier to control on thin or heat-sensitive parts. Higher power improves productivity on thick coatings and large structures. | Choose power according to coating thickness, removal rate, workpiece size, and allowable heat exposure rather than selecting the highest rating. |
| Laser Wavelength | Approximately 1,060–1,070 nm for common industrial fiber systems | Suitable for many painted metals, oxides, oil residues, and industrial surface-preparation tasks. | Verify absorption behavior on the coating and substrate. Reflective metals require validated process parameters and appropriate safety controls. |
| Pulse Duration | Nanosecond pulse systems are common; adjustable pulse duration is advantageous | Short, controlled pulses can reduce heat transfer to the base material and help separate coatings from metal surfaces. | Request test results showing coating removal, substrate temperature, surface roughness, and discoloration after processing. |
| Scanning Speed | Typically up to approximately 6,000–12,000 mm/s, depending on system design | Higher scanning speed can improve coverage uniformity and productivity when paired with sufficient laser power. | Do not compare speed alone. Check the effective removal rate at the required coating thickness and cleaning quality. |
| Cleaning Width | Approximately 10–300 mm, depending on the scan head and optics | Small widths provide precision around edges and welds; wider widths reduce passes on large, flat surfaces. | Select a variable scan width if the machine will handle both detailed parts and broad surfaces. |
| Suitable Materials | Carbon steel, stainless steel, aluminum, galvanized steel, selected alloys, and some stone or masonry surfaces | Industrial maintenance, repainting preparation, restoration, tooling, automotive parts, and fabrication. | Conduct a sample test on the exact substrate, especially for thin sheet, galvanized coatings, composite materials, or heat-treated parts. |
| Coating Thickness | Light coatings may be removed in one or a few passes; thick, multilayer coatings require multiple passes or higher power | Suitable for paint, powder coating, varnish, oxide layers, and selected corrosion products. | Ask for measured removal-rate data in square meters per hour at your actual coating type and thickness. |
| Cooling Method | Air cooling on compact lower-power units; water cooling on many higher-power systems | Air cooling favors portability. Water cooling supports longer duty cycles and higher thermal loads. | Check duty cycle, coolant requirements, ambient-temperature limits, noise level, and service access. |
| Operating Mode | Handheld, fixed workstation, robotic, or automated production-line integration | Handheld systems suit varied parts and field maintenance; automated systems provide repeatability and higher production consistency. | Evaluate working distance, cable length, gun weight, fixture requirements, robot interface, and operator fatigue. |
| Power Supply | Single-phase or three-phase industrial input, depending on rated power | Single-phase units are easier to deploy; three-phase units are common for higher-power industrial equipment. | Confirm voltage, frequency, current demand, circuit capacity, grounding, and installation requirements at the worksite. |
| Safety Requirements | Enclosed controlled area, interlocks, emergency stop, warning indicators, key switch, beam shielding, and wavelength-rated eye protection | Essential for preventing direct or reflected exposure to the laser beam and reducing fume-related risks. | Use a documented laser safety assessment, suitable fume extraction, training, signage, and compliance with applicable local regulations. |
| Fume and Dust Control | Integrated or external extraction with filtration appropriate for paint and coating residues | Important when removing lead-containing, chromium-containing, solvent-based, or otherwise hazardous coatings. | Identify coating hazards before processing and specify filtration, airflow, disposal, and respiratory-protection requirements. |
| Control Interface | Preset recipes, touchscreen controls, adjustable frequency, pulse width, scan pattern, and power | Useful for switching between paint types, substrates, edges, grooves, and delicate surfaces. | Look for password protection, parameter storage, process traceability, and clear fault diagnostics. |
| Portability | Compact systems may weigh tens of kilograms; higher-power systems can require wheels or dedicated placement | Portable equipment is practical for repair, ship maintenance, construction, and large fixed structures. | Check total system weight, handle design, wheel clearance, cable management, and transport protection. |
| Maintenance and Service | Low routine consumable use, but optics, protective windows, filters, coolant, and extraction components require inspection | Affects uptime, beam quality, operating cost, and long-term process stability. | Confirm spare-parts availability, response time, training, warranty coverage, calibration support, and preventive-maintenance schedule. |
| Selection Recommendation | For general industrial paint removal, a pulsed fiber system in the 500–1,000 W range is often a practical starting point | Balances removal capability, heat control, portability, and productivity for many metal-part applications. | Finalize the choice only after a documented sample test confirms removal rate, surface condition, safety controls, and total operating cost. |