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发明授权
CN106381451B 一种CSP流程生产1000MPa级热轧马氏体钢及其生产方法 有权

一种CSP流程生产1000MPa级热轧马氏体钢及其生产方法
摘要：
本发明涉及一种CSP流程生产1000MPa级热轧马氏体钢及其生产方法，其化学成分质量百分数为：C：0.1～0.25，Si：0.1～0.5，Mn：1.0～2.0，P：≤0.020，S：≤0.010，Al：0.01～0.06，Cr：0.1～0.3，Ti：0.01～0.06，B：≤0.005，余量为Fe和不可避免的杂质，在CSP流程成功开发出热轧马氏体钢，抗拉强度≥1000MPa、延伸率≥8％。钢板在具有高强度的同时也有良好的成形性能，采用CSP流程生产热轧马氏体钢，流程短、效率高，更加节能；成分设计不含Nb，合金成本更低；卷取温度在300℃以上，更容易控制。
摘要（英）：

The invention relates to 1000MPa-level hot-rolled martensitic steel produced through a CSP process and a production method of the 1000MPa-level hot-rolled martensitic steel produced through the CSP process. The 1000MPa-level hot-rolled martensitic steel produced through the CSP process comprises, by mass, 0.1%-0.25% of C, 0.1%-0.5% of Si, 1.0%-2.0% of Mn, not larger than 0.020% of P, not larger than 0.010% of S, 0.01%-0.06% of Al, 0.1%-0.3% of Cr, 0.01%-0.06% of Ti, not larger than 0.005% of B and the balance Fe and inevitable impurities. The martensitic steel is successfully developed through the CSP process, the tensile strength of the martensitic steel is larger than or equal to 1000Mpa, and the ductility of the martensitic steel is larger than or equal to 8%. A steel plate has high strength and good forming property. Because the martensitic steel is produced through the CSP process, the process is short, the efficiency is high, and more energy is saved. Because the martensitic steel does not contain Nb, the alloy cost is lower. Because the coiling temperature is over 300 DEG C, control is easier.

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