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本文提出实施压力容器筒节和球形封头的A类焊接接头超声检测实际就是采用平板对接焊接接头超声检测的方法,成败的关键在于封头侧探头移动区探头的耦合情况和补偿定量,即球面压制成形和打磨程度以及传输损失差是否正确测定。
In this paper, the ultrasonic testing of A-type welded joints implementing pressure vessel tubular joints and spherical heads is actually the method of ultrasonic testing using flat-plate butt welded joints. The key to success or failure lies in the coupling and compensation of the probe in the moving area of the head-side probe, The degree of press-forming and polishing as well as the transmission loss difference is measured correctly.