铸铁较之钢有这样一个特性,即对超声波的衰减量很大。为此,虽然在铸铁领域内进行了种种应用超声波技术的试验,可是,远没有达到广泛的实用化程度。随着探头及电子仪器性能的提高,近来超声波技术在铸铁领域的应用开始广泛起来。有关超声波技术对铸铁材质进行判定方面的报告很多,其优点是可 Cast iron has such a characteristic over steel that the attenuation of ultrasonic waves is large. To this end, although in the field of cast iron conducted a variety of applications of ultrasonic testing, however, far from reaching a wide range of practical level. With the improvement of the performance of the probe and the electronic instrument, the application of the ultrasonic technology in the field of cast iron has started to widen recently. There are many reports on the determination of cast iron materials by ultrasonic technology. The advantage is that it can be used