Low-pressure water jet and laser composite cutting on Al₂O₃ ceramic

As the thermal cracks, a large amount of slag etc. exist with laser cutting on Al2O3 ceramic, a technology called low-pressure water jet and laser composite cutting on ceramics was introduced. Compared with ordinary laser cutting, the results show that low-pressure water jet and laser cutting is better, which can greatly reduce the slag and avoid thermal cracks. The influence rules of low-pressure water jet and laser composite cutting on ceramics the different auxiliary gas pressure, laser pulse energy and repeated frequency on were mainly discussed, and found out that under the water jet, the auxiliary gas pressure mainly played the role in blowing the drops away from the cutting head. When the laser pulse energy or the repeated frequency increased, the ablation of the material increased, but if the material cannot take away by the water jet, that would be accumulated to large amount of slag which will impact the quality of ceramic cutting.