薄钢板内部缺陷以前多采取离线进行漏磁方法检测 ,现日本川崎制铁公司开发出在线采用高效率探伤性能的水浸超声波探伤法 ,已在实际生产线应用。这种超声波在线传感器探伤法是由线性无线阵构成的发送探头和接受探头 (频率 2 5ＭＨｚ)组成。由发送探头向钢板发送超声波射线 ,接收 In the past, the internal defects of thin steel plates were detected offline by magnetic flux leakage method. Now Japan’s Kawasaki Iron & Steel Co., Ltd. has developed a water immersion ultrasonic testing method that uses high-efficiency flaw detection capabilities and has been applied in actual production lines. This ultrasonic on-line sensor flaw detection method is composed of a linear wireless array transmit probe and receive probe (frequency 25MHz). Sent by the probe to the plate to send ultrasonic radiation, receive