355nm/532nm/1064nm Chromatic Laser Marking System for Stainless Steel

1. Laser-Material Interaction Mechanism:

• Precise control of laser wavelength (355nm/532nm/1064nm) generates plasmon resonance on material surfaces, forming 50-500nm thick oxide interference films on metals for structural coloration through thickness modulation.
• For non-metallic materials, laser-induced periodic surface structures (LIPSS) create visual colors through light diffraction and interference.

2. Core Subsystem Coordination:

• Optical System: MOPA fiber laser + acousto-optic Q-switching enables independent control of pulse frequency (1-2000kHz) and energy.
• Motion System: High-speed galvanometer (10m/s scan speed) + precision linear motor stage (±2μm positioning repeatability).
• Color Control System: Online spectrometer monitors chromaticity values in real-time, dynamically adjusting laser parameters (power/frequency/scan spacing) via PID algorithm.

3. Process Flow:

• Material pretreatment → Laser parameter modeling → 3D path planning → Interference film growth → Color quality inspection → Post-processing enhancement.

1. True Color Technology:

• Proprietary "laser parameter-color mapping algorithm" enables 16 million color display on 304 stainless steel.
• Color durability passes ISO 105-B02 testing with ΔE<3 after 500-hour xenon lamp aging test.

2. Intelligent Processing System:

• AI vision system automatically recognizes workpiece curvature for focal compensation (±0.1mm surface adaptation accuracy).
• Supports 3D relief processing with 0.1μm depth resolution.

3. Eco-Friendly Manufacturing:

• Reduces chemical wastewater by 95% compared to electroplating.
• Energy consumption <0.5kWh per piece (1/8 of anodizing process).

4. Material Adaptability:

• Metals: Color marking on stainless steel/titanium/aluminum (hardness variation HV±5%).
• Non-metals: Sapphire glass engraving, ceramic glaze coloring (heat-affected zone <10μm).