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根据磁性能要求,电工纯铁应尽量具有小的磁滞损耗,低的磁矫顽力(Hc),高的导磁率(μm)和高的饱和磁感应强度(B);而电工纯铁在供应状态和机械加工后其磁性通常不能满足要求,故制成的电工纯铁零件还施以退火,以消除零件冲切等机械加工内应力,改善组织,恢复和提高磁性。为了防止电工纯铁零件在退火过程中氧化、增碳、渗氮,有条件的工厂常采用氢气、
According to the requirements of magnetic properties, electrotechnical pure iron should have small hysteresis loss, low magnetic coercivity (Hc), high permeability (μm) and high saturation magnetic flux density (B) State and mechanical processing of its magnetic can not usually meet the requirements, so the electrical pure iron parts made of annealing is also applied to eliminate parts such as mechanical cutting punching stress, improve the organization to restore and improve the magnetic. In order to prevent the oxidation of pure iron parts in the annealing process, carbon, nitriding, conditional factory often use hydrogen,