Views: 0 Author: Seasoned Engineer Kevin Publish Time: 2025-04-03 Origin: Tianchen Laser
A fiber laser cutting machine offers exceptional precision and efficiency when processing various metals, including stainless steel, aluminum, and mild steel. However, achieving the best cutting results depends on selecting the right machine settings. These settings influence cutting speed, edge quality, and material waste. In this guide, we will explore the ideal parameters for fiber laser cutting of these three common metals.
Each type of metal has unique physical and chemical properties, requiring different laser power, speed, and auxiliary gas configurations. Factors such as material thickness, laser wattage, and focal position significantly impact the quality of the cut. Selecting the correct settings ensures minimal dross, smooth edges, and high cutting efficiency.
Stainless steel is known for its high durability, corrosion resistance, and aesthetic finish. However, its reflective surface can impact laser absorption. The right combination of laser power and gas type ensures clean and precise cuts.
Laser Power: 1kW to 6kW, depending on thickness
Cutting Speed: Adjusted based on material thickness (e.g., 1mm stainless steel requires around 35-45 m/min with a 1kW laser)
Assist Gas: Nitrogen is the preferred choice for oxidation-free cuts, while oxygen increases cutting speed but may lead to oxidation
Focus Position: Slightly negative focus enhances penetration and cutting efficiency
Use a high-purity nitrogen gas supply to achieve bright, smooth edges.
Adjust power and speed settings to avoid burrs on thicker materials.
Regularly clean and calibrate the nozzle to ensure consistent results.
Aluminum’s high reflectivity and thermal conductivity pose challenges in fiber laser cutting. To counteract these, high-powered lasers and specialized settings are necessary.
Laser Power: Minimum 2kW for thin sheets, up to 6kW for thick plates
Cutting Speed: Dependent on thickness; 1mm aluminum typically requires around 30-40 m/min at 2kW
Assist Gas: Nitrogen is ideal for oxidation-free cutting; compressed air can be used for cost-effectiveness on non-decorative parts
Focus Position: Slightly positive focus for efficient heat penetration
Use an anti-reflection system to protect laser components from back-reflected energy.
Increase laser power when cutting thick aluminum sheets to prevent incomplete cuts.
Ensure proper ventilation as aluminum cutting produces more dust and debris compared to other metals.
Mild steel is one of the easiest metals to cut with a fiber laser due to its low reflectivity and excellent absorption of laser energy. It is commonly used in industrial applications such as automotive and construction.
Laser Power: 1kW for thin sheets, up to 12kW for heavy-duty applications
Cutting Speed: Adjusted based on thickness; 1mm mild steel can be cut at 40-50 m/min with a 1kW laser
Assist Gas: Oxygen enhances cutting speed and edge smoothness, while nitrogen is used for oxidation-free edges
Focus Position: Slightly negative for thick plates, zero focus for thin sheets
Use oxygen for enhanced speed but be mindful of oxidation effects on the cut surface.
Adjust gas pressure to prevent excess burn marks or rough edges.
Implement periodic maintenance of lenses and nozzles to maintain consistent cut quality.
Selecting the right fiber laser cutting machine settings for stainless steel, aluminum, and mild steel ensures high-quality, precise, and efficient cutting. By adjusting parameters such as laser power, assist gas, and focus position, businesses can optimize their cutting performance and minimize material waste.
At Tianchen Laser, we provide state-of-the-art fiber laser cutting machines designed for high precision and industrial applications. Our machines are tailored for cutting stainless steel, aluminum, mild steel, and other metals with exceptional accuracy. Contact us today to learn how our cutting solutions can enhance your manufacturing efficiency.
