Wie dick sind die Bleche, die mit einer Faserlaserschneidmaschine geschnitten werden können?

Mrz 14, 2025

The thickness of metal sheets that a fiber laser cutting machine can handle depends on several factors, including laser power, material type, assist gas, and desired cut quality. Here’s a structured overview:

Key Factors:

1.Laser Power: Higher wattage (kW) allows thicker cuts.

2.Material Type:

Mild Steel: Best performance due to lower reflectivity and thermal conductivity.

Stainless Steel: Slightly lower capacity than mild steel.

Aluminum: Challenging due to reflectivity and thermal conductivity.

Copper/Brass: Most challenging; limited by high reflectivity.

3.Assist Gas: Oxygen enhances cutting for steel (exothermic reaction), while nitrogen is used for non-oxidizing cuts (stainless, aluminum).

4.Cut Quality: Thicker cuts may result in rougher edges or slower speeds.

Typical Maximum Thickness by Material (with High-Power Lasers, e.g., 12 kW):

Mild Steel: Up to 30–40 mm (optimal quality up to ~25 mm).

Stainless Steel: Up to 25–30 mm.

Aluminum: Up to 20–25 mm.

Copper/Brass: Up to 10–15 mm.

General Guidelines:

Power-to-Thickness Ratio:

Mild steel: ~1 kW per 1–2 mm (non-linear; thicker cuts require disproportionately more power).

Example: A 6 kW laser cuts mild steel up to ~25 mm, while a 12 kW machine may reach 40 mm (with reduced speed/quality).

Practical Considerations:

Speed VS Thickness: Thicker materials require slower speeds, impacting productivity.

Edge Quality: Thicker cuts may have tapered or rougher edges; manufacturers often specify “recommended” thickness for smooth results.

Alternative Methods: For materials >40 mm (e.g., steel), plasma or oxy-fuel cutting may be more efficient.

Manufacturer Examples:

6 kW Laser: Cuts up to 25 mm mild steel, 20 mm stainless, 15 mm aluminum.

12 kW Laser: Extends to 40 mm mild steel, 30 mm stainless, 25 mm aluminum.

Conclusion:

Fiber lasers excel in cutting thin to medium-thickness metals efficiently. While high-power models (12 kW+) can handle thicker sheets, practical limits balance quality and speed. For the thickest materials (>40 mm), other methods like plasma cutting are often preferred. Always consult manufacturer specifications for precise capabilities.