What is the Maximum Depth of Laser Marking Machine

The maximum depth of a laser marking machine depends on several factors, including the laser type, power, material being marked, and processing time. Here’s a general guideline:

Typical Laser Marking Depths:

1. Fiber & CO₂ Lasers (Surface Marking):

• Usually 0.01–0.5 mm (10–500 microns).

• Best for high-contrast surface marks (e.g., logos, serial numbers).

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2. Deep Engraving Lasers (High Power):

• Can reach 0.5–5 mm with multiple passes.

• Requires higher power (50W–100W+ fiber lasers or pulsed lasers).

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3. Specialized Industrial Lasers (Ultra-Deep):

• Some high-power CO₂ or Nd:YAG lasers can achieve 5–10 mm on metals (e.g., molds, tools).

• Requires slow speeds & multiple passes.

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Key Factors Affecting Depth:

• Laser Power: Higher wattage (e.g., 100W+ fiber lasers) allows deeper marks.

• Material: Metals (steel, aluminum) allow deeper marks than plastics or ceramics.

• Pulse Duration: Short-pulse lasers (nanosecond) are better for fine marks, while longer pulses (millisecond) can engrave deeper.

• Focus & Lens: A longer focal length lens can help achieve deeper engraving.

Maximum Possible Depth:

• Metals (Steel, Titanium): Up to 5–10 mm with industrial-grade lasers.

• Plastics/Glass: Usually limited to < 1 mm due to melting/ablation.

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For deep engraving applications (e.g., industrial part numbering), a high-power fiber or CO₂ laser with multiple passes is recommended.

Would you like recommendations based on your specific material?