Array detection method for flaw detection of steel plate

The invention discloses an array detection method for steel plate flaw detection, and relates to the technical field of steel production, the method comprises the following steps: S1, after the front part of a steel plate is placed on a transmission roller, an operator or a sensor for detecting the steel plate placed on the transmission roller gives a first instruction to a controller, and the controller responds to the first instruction to control the transmission roller to start; the transmission rollers drive the steel plate to move on the transmission rollers after being started; s2, calculating movement data of the steel plate, sending the movement data as a second instruction to the controller, and controlling a plurality of flaw detection probes of the flaw detection mechanism by the controller in response to the second instruction to form a synthetic ultrasonic beam; and S3, the controller controls the synthesized ultrasonic beam to conduct automatic flaw detection on multiple positions and/or multipl