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简述了基于初始磁导率法的ＷＧＦ─１型微机式钢铁材质自动分选仪的原理和现场实际应用的结果．应用表明，用螺线管式探头可检测距表面深达２５ｍｍ处的内部裂纹等缺陷，用笔式探头可检测距表面深达１００ｍｍ处的裂纹等缺陷，从而为钢铁件的表面和深层内部探伤提供了一种分选速度可达１５００件／ｈ的新方法．
The principle of WGF-1 microprocessor-based steel automatic sorting machine based on initial permeability method and the results of field application are briefly described. Application shows that the use of a solenoid probe can detect defects such as internal cracks up to 25mm away from the surface with a pen probe can be detected from the surface cracks up to 100mm and other defects so as to detect the surface of steel parts and deep internal inspection A new method of sorting speeds up to 1500 pieces / h is provided.