Key Visual Indicators
Cut Surface Roughness: The shallower the vertical striations on the cut face and the smoother the surface, the lower the roughness; high-quality equipment produces edges that require little to no secondary grinding before use.
Bottom Burrs: A lack of dross or residual molten slag at the bottom of the workpiece is a primary indicator of quality cutting; excessive burrs suggest a severe mismatch in power, speed, and gas pressure parameters, necessitating additional grinding steps.
Edge Perpendicularity:When cutting plates thicker than 10mm, minimal deviation from the vertical axis is ideal; high-quality equipment produces edges that are nearly perfectly vertical, avoiding tapered profiles (such as being wider at the top than the bottom, or vice versa).
Kerf Width: High-quality equipment produces narrower kerfs, enabling the processing of smaller precision holes and complex contours while significantly improving material utilization; for thin sheets, the kerf width can be controlled to within 0.1mm.
Detailed and Subtle Indicators
Edge Striation Pattern: During high-speed cutting of thick plates, the cut edge shows no significant curved "drag lines"; by decelerating at the end of the cut, the striations remain uniform and consistent, avoiding localized roughness or irregularities.
Absence of Deposits and Corrosion: The workpiece surface remains free of black deposits caused by vaporized oil or contaminants, and the cut edges show no localized pitting or burn marks, resulting in a clean, pristine appearance.
Heat-Affected Zone (HAZ) Size: The heat-discolored area near the cut is extremely narrow, with no significant metal hardening layer; thin sheets exhibit virtually no thermal deformation, and small precision parts do not warp due to heat.
Dross Adhesion: Even if trace amounts of molten slag remain, they detach with a light touch rather than adhering firmly to the bottom of the workpiece, drastically reducing the workload for post-processing cleanup.
