一、序言电磁超声波技术在钢铁生产、加工和成品检验方面有着广泛的用途,其原因在于它能够不接触钢材等被检材料而产生超声波并进行检波。有关原理和各种特征,已经发表了许多研究报告。我们曾把在线连铸凝固壳的厚度计作为此项技术中的一个应用问题进 First, the preamble Electromagnetic ultrasonic technology in steel production, processing and finished product testing has a wide range of uses, because it can not be exposed to steel and other materials were seized to produce ultrasonic and detection. A number of studies have been published on the principles and various features. We have used in-line casting thickness gauge solidification shell as an application of this technology into