CAJ | 학술논문

针对激光切割Al2O3陶瓷存在热裂纹、大量熔渣等问题，提出了低压水射流激光复合切割陶瓷技术，并将这种工艺与普通激光切割进行了对比，结果表明低压水射流激光复合切割陶瓷可以大大减少陶瓷切缝的熔渣、避免热裂纹。主要研究了辅助气体压力、激光脉冲能量和激光重复频率对水射流激光复合切割Al2O3陶瓷质量的影响规律，发现水射流存在时，辅助气体压力主要起到吹除切割头处水珠的作用，激光脉冲能量或激光重复频率增大、烧蚀材料增多，当烧蚀材料不能及时被射流冲除就形成了熔渣的累积，影响陶瓷切割质量。
침대격광절할Al2O3도자존재열렬문、대량용사등문제，제출료저압수사류격광복합절할도자기술，병장저충공예여보통격광절할진행료대비，결과표명저압수사류격광복합절할도자가이대대감소도자절봉적용사、피면열렬문。주요연구료보조기체압력、격광맥충능량화격광중복빈솔대수사류격광복합절할Al2O3도자질량적영향규률，발현수사류존재시，보조기체압력주요기도취제절할두처수주적작용，격광맥충능량혹격광중복빈솔증대、소식재료증다，당소식재료불능급시피사류충제취형성료용사적루적，영향도자절할질량。
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.