Laser cutting burr reduction in titanium sheet

During laser cutting of titanium sheets, burr formation is primarily related to process parameters and equipment condition. Focal point deviation leads to energy dispersion, resulting in incomplete vaporization of the titanium sheet and slag accumulation, forming burrs. Furthermore, insufficient laser power or mismatched cutting speed (too fast or too slow) also affects cutting quality, leading to slag residue.

The purity and pressure of the assist gas are critical factors. Insufficient gas purity (e.g., oxygen purity below 99.95%) or excessively low pressure fails to effectively remove molten titanium slag, thus forming burrs. Simultaneously, prolonged equipment operation may cause instability, exacerbating the burr problem.

To reduce burrs, the equipment (e.g., laser base structure) should be regularly inspected and parameters optimized: ensuring accurate focus, adjusting power and speed matching, and selecting high-purity gases. For example, nitrogen can be preferentially used as the assist gas when cutting titanium sheets to improve the surface finish.