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发明公开
CN106086674A 低合金铸钢及其冶炼方法、热处理方法和铁路机车零部件 无效 - 驳回

低合金铸钢及其冶炼方法、热处理方法和铁路机车零部件
摘要：
本发明涉及低合金铸钢及其冶炼方法、热处理方法和铁路机车零部件，属于合金钢技术领域。本发明公开的低合金铸钢的各组分及其相对于所述低合金铸钢总重的重量百分比为：碳0.23%～0.28%、硅0.20%～0.40%、锰0.80%～1.00%、磷≤0.020%、硫≤0.020%、铬0.45%～0.55%、镍0.50%～0.60%、钼0.15%～0.25%、铝0.02%～0.06%，以及钨0.02%～0.10%、铌0.01%～0.05%，且必须满足0.04% ≤钨+铌≤0.12%；以及余量为铁和其他不可避免的元素。本发明的低合金铸钢含有按一定配比使用的钨和铌，在经过热处理后，可以作为E级钢使用，并且，具有优越的可焊性、良好的塑性和冲击韧性，且机械性能稳定性好。
摘要（英）：

The invention relates to low-alloy cast steel, a smelting method and heat treatment method thereof, and a locomotive part and belongs to the technical field of alloy steel. The low-alloy cast steel, comprises, by the total weight of the low-alloy cast steel, 0.23%-0.28% of carbon, 0.20%-0.40% of silicon, 0.80%-1.00% of manganese, 0-0.020% of phosphorus, 0-0.020% of phosphorus, 0.45%-0.55% of chromium, 0.50%-0.60% of nickel, 0.15%-0.25% of molybdenum, 0.02%-0.06% of aluminum, 0.02%-0.10% of tungsten, 0.01%-0.05% of niobium, and the balance ferrum and other inevitable elements, wherein the weight percentage of tungsten and niobium is 0.04%-0.12%. The low-alloy cast steel contains tungsten and niobium which are used according to a certain ratio and can be used as E-grade steel after being subjected to heat treatment; and the low-alloy cast steel has excellent weldability and good plasticity and impact toughness, and the stability of the mechanical property is good.

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