Photonic De-Coating Engine

Laser Cleaning Fluence & Speed Calculator

Calculate laser rust ablation fluence (J/cm²), pulse energy (mJ), beam overlap ratios, and area cleaning productivity (m²/h) for pulsed and continuous wave fiber laser cleaning machines.

Ablation & Scanning Parameters

Contaminant / Coating Layer

Vaporizes readily with acoustic snapping sound. High optical absorption contrast against clean base steel.

Laser Power Rating300 Watts

Pulse Repetition Frequency40 kHz

Lower kHz yields higher pulse energy (mJ) for stubborn scale; higher kHz gives smoother surface finish

Scan Line Width (mm)Width of oscillating laser line

Hand Advance Velocity (mm/s)Travel speed across surface

Safe Non-Destructive Ablation

Energy density is well above contaminant threshold but comfortably below the substrate melting limit. Preserves base metal dimensions.

Cleaning Speed & Energy

Area Cleaning Coverage Rate

9m² / hour

96.9 ft² / hour (25 cm²/sec)

Radiant Fluence

3.8 J/cm²

Threshold: 1.2 J/cm²

Pulse Energy

7.5 mJ

Per single pulse

Pulse Scan Overlap

80%

Optimal overlap is 60% - 80% to prevent uncleaned zebra stripes

Laser Ablation Physics

Mechanisms of Laser Rust Stripping & Paint Removal

1. Photo-Acoustic Spallation

Pulsed lasers (100W-500W) remove oxide through rapid thermo-elastic shockwaves rather than bulk melting. Nanosecond pulses rapidly heat the rust interface; thermal expansion creates acoustic shock pressures that fracture brittle rust off the ductile steel substrate with virtually zero thermal substrate heating.

2. Pulsed vs. Continuous Wave (CW) Cleaning

While CW laser cleaners (1kW-3kW) achieve higher raw area throughput for heavy structural steel and bridge restoration, their continuous heat input risks substrate distortion and thermal annealing. For precision molds, injection dies, and sheet metal panels, pulsed lasers are strictly required.