Fiber Laser Cutting Machine: Addressing Stainless Steel Slag Adhesion

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In stainless steel cutting, slag hanging and burrs are common issues in sheet metal workshops, which not only increase grinding time but also affect workpiece accuracy and delivery efficiency. As a laser cutting machine manufacturer, we share several practical suggestions from both equipment and process perspectives.

The formation of slag hanging is typically related to the focal position, auxiliary gas pressure, cutting speed, and power matching. When cutting stainless steel with a fiber laser cutting machine, a positive or negative focal offset can affect slag removal. It is recommended to first calibrate the focal position and then gradually adjust the gas pressure. Nitrogen cutting produces a clean cut surface but may leave slag hanging if the gas pressure is insufficient; oxygen cutting is faster but results in an oxidized cut surface.

For thin stainless steel plates, the cutting speed can be appropriately increased to avoid excessive heat input leading to slag attachment. For thick plates, the speed should be reduced to ensure complete cutting. The nozzle aperture and defocus distance must also be matched according to the plate thickness. Fiber laser cutting machine manufacturers typically provide a process parameter library, which operators can refer to for adjustments.

If the slag hanging issue persists, it is recommended to check the lens cleanliness and optical path alignment. Regular maintenance can extend the equipment’s lifespan and maintain stable cutting quality.

Our factory’s fiber laser cutting machine is suitable for laser cutting of metals such as carbon steel, stainless steel, and aluminum plates. If you need to address specific cutting challenges, feel free to schedule a proofing session. We can provide selection tables and process support.