How to use Fiber Laser Cutting Time& Fabrication Cost Calculator
- Enter Laser generator output power (kW) and adjust the options as needed.
- Run the tool and inspect its results, evidence and limitations.
- Copy or download the result, then verify it against the actual website, source data or business records.
Try a concrete example
Cutting 3mm stainless steel with a 6 kW laser over 45m perimeter and 18 pierces using 16 bar N₂: estimated cutting speed is 8.44 m/min and part cycle time is 6.22 minutes (0.104 hr). Consumes 3.60 m³ N₂ ($7.92), 3.09 kWh electricity ($0.46), and machine/labor overhead of $4.67: total cutting cost is $13.05 ($0.29/m). Assist gas accounts for 60.7% of total cost!
How to interpret results
Assist gas (especially high-pressure nitrogen for medium-thick plates) often exceeds electricity and labor costs combined. Selecting appropriate gases and common-line nesting reduces fabrication expenses by 20% to 40%.
Frequently asked questions
Why must stainless steel and aluminum be cut with high-pressure nitrogen rather than oxygen?
Oxygen reacts exothermically in the molten kerf, leaving a blackened brittle oxide slag edge that hampers appearance and causes weld porosity or coating adhesion failure. High-pressure nitrogen (14~20 bar) mechanically blows molten alloy clear without chemical reaction, producing a clean mirror-grade finish.
How significantly do pierce times and counts impact laser fabrication costs?
Piercing shoots molten spatter that degrades protective cover slides. Progressive pierce on 6mm+ plates takes 0.5~2.0s per hole. On perforated parts, total pierce time can exceed linear contour cutting time. Common-line cutting and continuous chain cutting are key to reducing costs.
How much can shop air assist save compared to high-pressure bottled nitrogen?
Shop air contains ~78% nitrogen and 21% oxygen. For 1~4mm thin gauge sheet, a 16 bar high-pressure compressor with refrigerated drying and filtration replaces liquid nitrogen. Air assist gas cost is merely electricity (~$0.05~$0.15/m³), slashing gas expenses by 80% to 90% versus liquid nitrogen ($1.5~$2.5/m³).
How does higher laser power (e.g. 3kW vs 12kW vs 30kW) dramatically improve economics?
Laser feed rates scale exponentially with output power. For 10mm steel, 3kW cuts at ~1.2 m/min, while 12kW cuts at ~5.5 m/min (4.5x faster). The drastic cycle time reduction dilutes hourly machine depreciation, labor and gas overhead, reducing unit piece cost by over 40%.