挪威埃尔肯公司发明了一种检测热轧钢坯和钢材表面缺陷的新方法,它综合应用了高频感应加热、红外温度记录和快速电讯号处理等先进技术。这种检刚方法的工作原理是:将轧后的热钢坯或钢材通过有高须电流的导电线圈,钢件上便产生感应电流,感应电流集中在钢件表面土流动,能使钢件表面加热,温度略有提高。如总钢件 Erken, Norway, has invented a new method for the detection of surface defects in hot-rolled steel billets and steels, incorporating advanced technologies such as high-frequency induction heating, infrared temperature recording and rapid telecom signal processing. The working principle of this test method is: the rolled hot billet or steel through a high current to the conductive coil, the steel will have an induction current, induction current concentrated in the steel surface soil flow, the steel surface Heating, the temperature slightly increased. Such as the total steel