The invention relates to a method and a device for curing a
fiber-reinforced resin-based
composite material component by utilizing microwaves. The microwaves which are generated by a
microwave source with linearly-adjustable power are guided into a
resonant cavity, and the microwaves penetrate through and heat the
composite material, so that the
composite material can be quickly cured and formed. By adopting the advanced octagonal
microwave-mode
resonant cavity, the uniformity of an
electromagnetic field inside the device can be realized; the interference of the reflection wave on the
microwave source can be reduced by adopting an automatic
impedance matching system, so that the optimal transmission of the
microwave power can be realized. A vacuum
pipe connector and a temperature sensor are arranged on the inner side wall of the octagonal multi-mode
resonant cavity, a glass worktable is arranged inside the resonant cavity, and the rotation of a
ball screw is controlled through a
stepper motor to control the back-forth movement of the worktable. A
choking groove is adopted to prevent the leakage of the microwave. By adopting the method and the device, the problems of the traditional
autoclave forming method that the time for manufacturing the
fiber-reinforced composite material is long, the
energy consumption is high and the heat is non-uniform can be solved, the
curing time can be saved, and the quality and performance of the composite material component can be improved.