一、前言永磁合金是一种精密合金,又称磁钢。磁钢在我国得到了很快的发展,按生产厂家来说,解放切期只有两三家生产,现在已经得到普及,即全国各省市自治区大部份都有生产厂。按品种来说,刚开始生产铝镍材料,现在已经能生产铝镍钴等十多个品种,体职由小到一克,大到几十公斤。由于它具有很高的永磁性能和良好的稳定性,因而在电声、仪器仪表、电机、电视机,雷达以及自动控制中获得了广泛的应用。随着科学技术的发展,对磁钢的要求也越来越高,除磁性能外,还要求作高低温试验,震动试验,静平衡和动平衡的试验。磁 First, the preface Permanent magnet alloy is a precision alloy, also known as magnet. Magnet has been rapidly developed in our country, according to the manufacturer, the liberation cut-off period of only two or three production, has now been universal, that is, most of the provinces, autonomous regions and municipalities have production plants. By species, the beginning of the production of aluminum-nickel material, now Al-Ni-Co has been able to produce more than 10 varieties, bodywork from small to one gram, up to tens of kilograms. Because of its high permanent magnet performance and good stability, it has been widely used in electroacoustic, instrumentation, motors, televisions, radar and automatic control. With the development of science and technology, the requirements of the magnet are also getting higher and higher, in addition to magnetic properties, but also for high and low temperature test, vibration test, static balance and dynamic balance test. magnetic