Method for rapidly repairing cracks of aluminum alloy wall plate of fairing

The invention relates to the technical field of aviation maintenance, in particular to a fairing aluminum alloy wall plate crack rapid repairing method which comprises the following steps that a repairing interval is determined; preparing a laser repair tensile sample and a metallographic sample with the same material mark as the aluminum alloy wallboard; al-Mg-Sc series high-strength aluminum alloy powder is prepared to serve as a special repairing material; the to-be-repaired part, the tensile sample and the metallographic sample are placed in the temperature field auxiliary laser additive repairing device to be preheated before repairing; the preheated to-be-repaired part and the sample are rapidly transferred to an ultrasonic vibration field; laser additive repairing is carried out in the flexible protection cabin; carrying out vacuum annealing treatment on the repaired part and sample; and detecting the metallographic phase and strength of the sample after laser repair is finished. The repair cycle of th