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我們最近試驗用低碳鋼渗碳代替高铬碳鋼(12)制造电动机硅鋼片槽孔冲模,取得初步成效。硅鋼片槽孔冲模类型很多,按硅鋼片槽孔要求设計。附图是定子硅鋼片槽孔冲模的一种。冲模配合公差很小,对热处理变形要求很严格,并且要求比較高的耐磨性和良好的韌性,采用15号鋼渗碳并調質后,用盐浴爐加热淬火,加热均匀,时間短,变形量保持在0.02～0.04毫米范围內,一般合乎工艺要求。
We recently experimented with low carbon steel carburizing instead of high-chromium steel (12) manufacturing motor silicon steel slot slot die, and achieved initial results. Silicon steel slot die a lot of types, according to the requirements of silicon steel slot design. The figure is a stator silicon steel slot die. Die with a small tolerance, the deformation of the heat treatment is very demanding, and requires relatively high wear resistance and good toughness, using 15 steel carburizing and quenching, with a salt bath furnace quenching, heating evenly, a short time , The amount of deformation maintained at 0.02 ~ 0.04 mm range, generally in line with process requirements.