本文研究和开发了高强度热轧防弹钢板B900FD，设计了合金的化学成分，探讨了不同卷取温度对防弹钢组织、力学性能的影响；对防弹钢板进行了枪击试验，同时对枪击后着弹点的变形特性和组织进行了分析；进行了加工工艺试验和焊接试验。结果表明，高强度热轧防弹钢板B900FD具有优良的强韧性匹配性能，枪击性能可以满足防弹板的要求，其加工性能、可焊接性可以适应现有生产工艺，同时降低了生产成本。本钢板的综合性能指标达到了《专用运钞车防护技术条件》（GA 164—2005）的要求。

This paper researched and exploited high strength hot rolling bulletproof steel B900FD. The chemical composition of B900FD was designed. The effects of different coiling temperatures on microstructure and mechanical property of bulletproof steel are discussed. The shooting test was carried out. The deformation characteristics and microstructure of the tested samples were analyzed. Cold forming and welding test were also progressed. The results show that B900FD has excellent strength and ductility compatibility. Shooting resistance property can satisfy the requirement of bulletproof steel. The machining and welding property can suit existing production process and reduce the cost. The comprehensive properties of developed B900FD steel achieve the standard of Protection specification for cash carrying vehicles (GA 164—2005).

1964年出生，男，重庆市人，教授级高级工程师，主要研究方向为汽车轻量化材料工艺研究