一、前言在航空电机、电器产品中,电工纯铁零件为数不算少,如机壳(或铁轭)、电磁铁壳体、磁极、换向极、铁芯等导磁体元件。电工纯铁零件,由于几何形状上的特点及型材供应上的困难,往往需要提供锻件和模锻件来满足生产要求。就航空电机、电器产品而言,电工 I. INTRODUCTION In aeronautic motors and electrical products, there are not many electrotechnical pure iron parts such as case (or iron yoke), electromagnet housing, magnetic pole, commutation pole and iron core. Electrician pure iron parts, due to the geometric characteristics of the shape and profile supply difficulties, often need to provide forgings and forgings to meet production requirements. For aeronautic motors, electrical products, the electrician