本发明公开了一种抗震耐火钢及其制备方法，属于建筑结构用钢技术领域。解决了现有技术中抗震耐火钢制备工艺复杂、工艺控制难度大的问题。上述抗震耐火钢的化学成分组成按质量百分比为：C：0 .06％～0 .10％、Si：0 .65％～1 .00％、Mn：1 .85％～2 .50％、Mo：0 .51％～0 .60％、Ni：1 .00％～1 .50％、Ti：0 .01％～0 .0 3％、N b：0 .0 5％～ 0 .1 0％、V：0 .0 3％～0 .10％、Al：0 .015％～0 .055％、P：<0 .015％、S：<0 .005％、O<0 .003％、N<0 .005％，其余为Fe和不可避免的杂质。制备方法如下：冶炼和铸造；进行两阶段控制轧制。上述制备方法简单易控，制得的抗震耐火钢综合性能好。

The invention discloses an anti-seismic refractory steel and a preparation method thereof, belonging to the technical field of steel for building structures. It solves the problems of complex preparation process and difficult process control of seismic refractory steel in existing technology. The chemical composition of the above anti-seismic refractory steel is as follows : C : 0.06 % – 0.10 %, Si : 0.65 % – 1.00 %, Mn : 1.85 % – 2.50 %, Mo : 0.51 % – 0.60 %, Ni : 1.00 % – 1.50 %, Ti : 0.01 % – 0.03 %, Ni : 0.05 % – 0.10 %, V : 0.03 % – 0.10 %, Al : 0.015 % – 0.055 %, P : < 0.015 %, S : < 0.005 %, O < 0.03 %, N < 0.005 %, and the rest are Fe and inevitable impurities. The preparation methods are as follows : smelting and casting. Two stage controlled rolling. The above preparation method is simple and easy to control, and the prepared seismic refractory steel has good comprehensive performance.