无磁性铸铁在苏联早已应用在电器制造工业上代替有色金属(铜合金与铝合金).目前,党与政府号召我们节约金属材料,特别是有色金属,因此,我国电器制造工业中的铸造技术人员已对无磁性铸铁产生了极大的兴趣,某些企业已投入了生产,开始应用在电器制造工业上,但是就全国范围来说,应用得还是不够普遍的,因此必须组织推广和应用,为我们祖国节约更多的有色金属,加速祖国工业化,降低成本,提高全国人民的物质文化生活水平.无磁性铸铁又叫作不导磁的高电阻铸铁,它与普通铸铁不同之处是在熔化过程中增添某些合金元素如锰、镍、铜等使它们在铸铁内部保持一定的含量时,铸铁就失去了磁性,导磁率(μ)降低到1.5以下.凡是导磁率在1.5以下的铸铁都可以称它谓无磁性铸铁.为了在电器产品(电流超过600安倍以上)设计中考虑到因磁滞效用而引起发热的那些有色金属另件用无磁性铸铁去代替,现将无磁性铸铁的熔铸和制造工艺介绍如下:大家都知道铁素体和渗碳体都是强磁性的,而奥氏 Non-magnetic cast iron in the Soviet Union has long been used in the electrical manufacturing industry to replace non-ferrous metals (copper alloy and aluminum alloy.) At present, the party and government called us to save metal materials, especially non-ferrous metals, therefore, China’s electrical manufacturing industry casting technicians Has great interest in non-magnetic cast iron, some companies have put into production, began to be used in the electrical manufacturing industry, but the countrywide, the application is still not universal enough, it must organize the promotion and application of Our motherland to save more non-ferrous metals, accelerate the industrialization of the motherland, reduce costs and improve the material and cultural life of people across the country Non-magnetic cast iron, also known as non-permeability of high resistance cast iron, which is different from ordinary cast iron melting process The cast iron loses its magnetism and the magnetic permeability (μ) is reduced to less than 1.5, and any cast iron with a permeability below 1.5 can be used Call it non-magnetic cast iron In order to take into account the heat caused by hysteresis in the design of electrical products (current over 600 ampere) those non-ferrous Is another piece of non-magnetic cast iron to replace, now the non-magnetic cast iron casting and manufacturing processes are as follows: We all know that ferrite and cementite are ferromagnetic, and austenitic