The pulsed laser cleaning machine is engineered to solve carbon deposit removal from mold cavities, aluminum alloy oxide layer cleaning, stainless steel weld discoloration, and mold-release residue on precision parts. Its controlled thermal input prevents substrate melting, replacing sandblasting and chemical cleaning without secondary damage.
How to Choose Between Pulsed and Continuous Wave Laser Cleaning
Pulsed laser cleaning delivers instantaneous high peak energy with cooling intervals between pulses, resulting in a minimal heat-affected zone. This makes it the right choice whenever the substrate is heat-sensitive, deformation-prone, or requires high precision — aluminum alloy precision parts, carved wood furniture, mold cavities, and stainless steel welds should all default to pulsed systems. Test data: a 200W pulsed unit cleaning 6061 aluminum alloy oxide scale, using a 10mm spot at 120kHz, achieved 0.92 m²/h with no melting or pitting on the surface. A 300W pulsed unit removing surface rust from 42CrMo steel, using a 15mm spot at 55kHz, reached 1.65 m²/h.
Continuous wave (CW) laser cleaning delivers sustained energy output and is the correct choice for large-area, thick-contaminant, heat-tolerant applications such as thick paint or heavy rust on structural steel. Under equivalent power, CW systems remove thick paint and rust at 3–6 m²/h — more than three times faster than pulsed systems on this type of job. However, sustained thermal buildup from CW output on aluminum or precision parts causes melting and discoloration, which is why pulsed machines remain the standard for precision cleaning applications where CW is unsuitable.
How to Match Laser Power to Workpiece Conditions
Power selection should be based on three variables — contaminant thickness, working area, and substrate heat tolerance — not simply "higher power is better." Test data: a 100W pulsed unit cleaning mold-release carbon deposits on H13 tool steel, using an 8mm spot at 70kHz, reached 0.52 m²/h with substrate temperature rise under 28°C, suitable for small precision parts and localized mold cleaning. A 200W unit cleaning weld discoloration on 304 stainless steel, using a 12mm spot at 60kHz, reached 1.15 m²/h with a surface roughness Ra ≤1.0μm, suitable for medium-area welds and batch mold pre-treatment.
The 300W unit comes standard with a water-cooling system for up to 12 continuous hours of operation, with an adjustable frequency range of 10kHz–300kHz, achieving 1.2–1.8 m²/h — suitable for small-to-medium mold and precision component batch processing. The 500W unit reaches 1.8–2.6 m²/h, suited to high-volume, continuous production line use. Important note: for contaminants thicker than 30μm (aged rust or old paint), efficiency on any pulsed power tier drops sharply to 0.15–0.25 m²/h — in this case, switch to a CW laser system rather than simply increasing pulsed power.
How to Set Key Parameters Based on Cleaning Objectives
Parameter selection follows a simple logic: the cleaning objective determines spot shape, and the substrate determines the frequency range. For localized refinement, weld spot-cleaning, or mold cavity work, use a circular spot with an adjustable diameter of 0.1–1.0mm (0.2–0.4mm recommended for standard precision work) — high energy concentration and strong single-point impact, though less efficient and prone to streaking over large areas. For large flat-area cleaning or batch part pre-treatment, use a line-shaped spot (galvo-scanned), as demonstrated by the 300W unit's 8–18mm line spot for continuous uniform sweeping.
For frequency settings, the 100W unit's standard operating range is 50–100kHz, the 200W unit's is 50–150kHz, while the 300W/500W units support frequencies as low as 10kHz for stripping thicker oxide layers and stubborn residues. Case data: H13 mold carbon deposit cleaning used a mid-high 70kHz for fine removal; 42CrMo surface rust used a mid-low 55kHz balancing removal force and speed; 6061 aluminum oxide cleaning used a high 120kHz to ensure no melting or pitting — confirming the principle that frequency should be adjusted to match contaminant hardness and substrate sensitivity.
Specification
| Model No. | MLA-CL-P100/P200/P300/P500 |
| Product name |
Pulsed Laser Cleaning Machine |
| Laser wavelength | 1064nm |
| Max Laser power | 100W/200W/300W/500W |
| Laser source | JPT |
| Coolingdown method | Air-CooledWater Clooed |
| Scan speed (mm/s) | 30000mm/s |
| Run-length (mm) | 0-145mm,continuouslyadjustable; dual-axis with 9 scanning modes; |
| Power Requirement | Single-phase 220V+10%,50/60HzAC |
| Mode of operation | Handheld/Automated |
| Life-span of fiber laser module | 100,000 hours |
| Cleaner head weight (kg) | 0.75KG/1.25KG/1.5KG |
| Maximum single pulse | 5/15/50(mJ) |
Sample & Application
Frequently Asked Questions
Q1: How do I choose between pulsed and continuous wave laser cleaning?
A1: Choose pulsed for precision, heat-sensitive substrates; choose CW for large-area, heavy contamination. Pulsed lasers have a minimal heat-affected zone — a 200W unit cleaning aluminum oxide showed no melting or pitting in testing. CW systems clean thick paint/rust at 3–6 m²/h but cause discoloration on aluminum parts. The two are not interchangeable.
Q2: How do I choose between 100W and 300W pulsed models?
A2: Base your choice on contaminant thickness and working area, not on power alone. 100W suits localized mold refinement (tested at 0.52 m²/h, temperature rise under 28°C). 300W suits batch processing of small-to-medium parts (tested at 1.65 m²/h). For rust thicker than 30μm, switch to a CW system instead.
Q3: Can pulsed laser cleaning damage aluminum alloy substrates?
A3: No damage occurs with correct parameters, but sample testing is required beforehand. Pulsed lasers have a minimal heat-affected zone — testing at 120kHz on aluminum oxide showed no melting or pitting. However, prolonged high-power dwell on one spot can still scorch the aluminum surface, so test samples before production runs.
Q4: How is pulsed laser cleaning efficiency calculated?
A4: Efficiency depends on power, contaminant thickness, scan speed, and spot size. For light rust or thin oxide layers: 100W achieves roughly 0.4–0.7 m²/h, 200W achieves 0.8–1.3 m²/h, 300W achieves 1.2–1.8 m²/h, and 500W achieves 1.8–2.6 m²/h. Thicker contaminants significantly reduce these rates.
Q5: What routine maintenance does a laser cleaning machine require?
A5: Core maintenance focuses on protecting the optical path and cooling system. Units of 300W and above use water cooling — check coolant circulation regularly to prevent overheating that shortens laser source life. Lenses need periodic cleaning to prevent dust buildup from reducing output power, and units should be kept dry and dust-free during extended downtime.
Q6: What site environment conditions are required for operation?
A6: A stable power supply, ventilation, and dust extraction are required. Cleaning generates dust and optical radiation, so the site needs fume extraction equipment and operators must wear eye protection. Units of 300W and above, equipped with water cooling, also require adequate space for heat dissipation and power supply capacity.
