最近 ,日本川崎钢铁公司研制成功装在轧辊探伤装置上的、表面缺陷检测能力极高的探头 ,并已在千叶、水岛两厂的热轧带钢厂使用 ,取得了工作辊单位消耗降低 2 0 %以上的效果。以往一般采用超声波表面探伤法检测轧辊表面。由于粗大的内部结晶组织和热轧时表面生成的微小热裂纹等 Recently, Japan’s Kawasaki Iron and Steel Company successfully developed the roll flaw detection device installed on the surface defect detection capability of the probe, and has been in Chiba, the two plants in the hot-rolled steel mill use, made the work roll unit consumption reduced 2 0% above the effect. In the past generally used ultrasonic surface inspection method to detect the roller surface. Due to the coarse internal crystal structure and the surface of the hot-rolled micro-cracks and so on