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发明公开
CN103266287A 一种中碳铁素体-珠光体型非调质钢及其制造方法 有权

一种中碳铁素体-珠光体型非调质钢及其制造方法
摘要：
本发明涉及一种中碳铁素体-珠光体型非调质钢，所述非调质钢的组成按重量百分数为：C：0.35～0.43％、Si：0.30～0.80%、Mn：1.00～1.60%、Cr：0.10～0.30％、V：0.06～0.20%、Ni：0.10～0.30％、P≤0.035％、S：0.040～0.075%、Alt：0.010～0.060％、N：100～200×10－4%，余为Fe和不可避免的杂质；该中碳铁素体-珠光体型非调质钢同时具有高强度、高韧性特点，在无需经过调质热处理的情况下，热轧钢的强塑性指标即可达到40Cr或40MnB调质钢水平；本发明还提供了上述中碳铁素体-珠光体型非调质钢的制造方法。
摘要（英）：

The invention relates to a medium-carbon ferrite-pearlite non-quenched and tempered steel which comprises the following components in percentage by weight: 0.35-0.43% of C, 0.30-0.80% of Si, 1.00-1.60% of Mn, 0.10-0.30% of Cr, 0.06-0.20% of V, 0.10-0.30% of Ni, at most 0.035% of P, 0.040-0.075% of S, 0.010-0.060% of Alt, 100-200*10<-4>% of N, and the balance of Fe and inevitable impurities. The medium-carbon ferrite-pearlite non-quenched and tempered steel has the characteristics of high strength and high toughness, and the plasticity of the hot rolled steel can still achieve the level of 40Cr or 40MnB quenched and tempered steel under the condition of no quenching and tempering treatment. The invention also relates to a manufacturing method of the medium-carbon ferrite-pearlite non-quenched and tempered steel.

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