Laser near-net forming method for preparing Al2O3 ceramic structural part

The invention belongs to the technical field of laser quick forming of ceramic materials, and provides a laser near-net forming method for preparing a Al2O3 ceramic structural part. An ultrasonic transducer is positioned and clamped, a forming base body of the Al2O3 ceramic structural part is clamped at the end of the ultrasonic transducer through a center hole in the forming base body and the end face, and an ultrasonic vibration system is fixed to a work table of a numerical control tool. An ultrasonic generator is started, resonance frequency of the ultrasonic vibration system is searched in the frequency range of 17-23 kHz, a resonance point fittest with output waveform characteristics is selected, and the ultrasonic generator works for 1-5 min under 50-100 W. The ceramic structural part is formed, then a laser device and a powder sending device are sequentially shut off, the frequency of the ultrasonic generator is adjusted to be higher than the resonance frequency of 0.3-5 kHz, ultrasonic output power k