一、前言硅钢片是一种软磁材料,其性能主要要求是:矫顽力小、单位铁损低、磁导率高。磁性的检验方法很多,对于电机、变压器硅钢片来说,我国目前大多数都采用25厘米磁化方圈——瓦特计法检验单位铁损。用互感线圈——平均值伏特表法检验交流磁感应。由此可见,25厘米磁化方圈和互感线圈都是硅钢片磁性检验设备必不可少的主要部件。虽然国家已有各种类型的磁性检验设备(如CZ_1型、CZ_3型、CL_1型、CL_4型等)供给订货使用。但是,不仅生产厂而且许多用户为了提高电机、变压器质量,也迫切需要对 First, the foreword Silicon steel is a soft magnetic material, its performance requirements are: small coercivity, low iron loss units, high permeability. Magnetic test methods are many, for the motor, transformer silicon steel, most of our current use of 25 cm magnetized square circle - Watt meter test unit iron loss. AC Mutual Inductance - Average Voltmeter Method. Thus, 25 cm magnetized square coil and mutual inductance coil are silicon steel magnetic test equipment is an indispensable main component. Although various types of magnetic inspection equipment (such as CZ_1, CZ_3, CL_1, CL_4, etc.) are available in the country for ordering. However, not only manufacturers but also many users in order to improve the quality of the motor, transformer, but also an urgent need