The primary difference between a 20W and 30W laser marking machine lies in their laser power, which affects marking speed, depth, and material compatibility. Here is a detailed comparison:
1. Power & Marking Speed
20W Laser: Lower power means slower marking speed, especially on harder materials. Best for small-scale or detailed work.
30W Laser: Higher power allows faster marking, improving productivity for industrial applications.
2. Marking Depth & Contrast
20W: Suitable for surface engraving (e.g., logos, serial numbers) but may struggle with deep engraving on metals.
30W: Can achieve deeper and more pronounced marks, especially on metals like stainless steel, aluminum, or titanium.
3. Material Compatibility
20W: Works well on plastics, anodized aluminum, wood, leather, and some coated metals.
30W: Better for harder materials (stainless steel, ceramics, some hardened metals) and can mark/engrave faster with higher contrast.
4. Cost & Energy Efficiency
20W: Generally cheaper, consumes less power, and is more cost-effective for light-duty use.
30W: Higher initial cost but more efficient for high-volume production.
5. Heat Generation & Precision
20W: Generates less heat, reducing material warping (good for thin plastics or delicate parts).
30W: More heat output, which can affect very thin materials but provides better results on thicker or harder surfaces.
