09CuPCrNi-A铁道车辆用耐大气腐蚀钢开发生产实践

Development and Production Practice of Atmospheric Corrosion Resisting Steel 09CuPCrNi-A for Railway Rolling Stock

山钢股份莱芜分公司采用铁水预处理—120 t转炉冶炼—LF精炼—2~#/3~#机板坯连铸—1 500 mm宽带成材工艺开发生产了09CuPCrNi-A铁道车辆用耐大气腐蚀热轧宽带钢。产品实物质量分析表明,钢的化学成分调控合理,产品质量稳定可靠,屈服强度395 MPa,抗拉强度548 MPa,断后伸长率31%,-40℃低温冲击吸收功98 J,同时具有良好的耐大气腐蚀性能,相对腐蚀速率低于45%。完全满足铁道车辆用钢订货技术条件要求。

The anti-atmospheric corrosion hot rolled strip steel 09CuPCrNi-A was produced in Shandong Iron and Steel Group Co., Ltd. by hot metal pretreatment-converter melting in 120 t furnace-LF refining-No.2/No.3 continuous casting-1 500 mm hot roll process. The quality results of the real product showed that the steel strips have reasonable composition and excellent mechanical property. The yield strength and tensile strength reach to 395 MPa and 548 MPa respectively. The average value of elongation is about 31%. Besides, the impact absorbing energy is about 98 J tested at -40 ℃. The relative corrosion rate is lower than 45% which indicated that the steel have remarkable anti-atmospheric corrosion property. It can be concluded that 09CuPCrNi-A steel produced by Shandong Iron and Steel Group Co., Ltd.achieved the technical requirements of steels for railway vehicle.