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低磁性高锰奥氏体铸铁,又称不导磁铸铁。它是一种低导磁率(μ<3)和高电阻(ρ=140~160微欧公分)的合金铸铁。因其成本低。机械强度较高,近年来在电机和电器制造工业上已日益获得广泛应用。我厂为协作厂生产不少产品铸件,由于需承受600安培以上电流,为了减少磁滞损耗及由此产生的电热现象,过去皆用铝、铜、有色金属制造。不仅成本高而且有色金属是国防和工农业生产所需重要材料。故从56年起,经过试验研究正式生产低磁性铸铁件,目前产品最大件已达4.5吨,壁厚200mm。
Low magnetic high manganese austenitic cast iron, also known as non-magnetic cast iron. It is a low permeability (μ <3) and high resistance (ρ = 140 ~ 160 micro-ohm cm) alloy cast iron. Because of its low cost. High mechanical strength, in recent years in the motor and electrical manufacturing industry has been increasingly widely used. I plant a lot of products for the collaboration plant casting, due to bear more than 600 amperes of current, in order to reduce hysteresis loss and the resulting electric phenomenon, the past are made of aluminum, copper, non-ferrous metals. Not only costly but also non-ferrous metals are important materials required for national defense and industrial and agricultural production. Therefore, from 56 years onwards, after the pilot study of the official production of low magnetic iron castings, the largest piece of the product has reached 4.5 tons, wall thickness 200mm.