动车组转向架构架材料的研发及应用

Research on Material Developement and Application of EMU Bogie Frame

转向架构架作为动车组主要承载结构,既受复杂交变载荷,又受环境条件影响,对其可靠性要求较高,因此其选材要求较为严苛。现阶段构架均采用欧洲和日本进口的耐候耐蚀钢板,可靠性高。近些年国产耐候耐蚀钢板的研制已取得突破性成果,试验验证其可靠性已不弱于欧洲和日本进口的钢板,但还未实现批量应用。考虑成本及进货周期,未来一段时间内国产钢板是构架应用材料的主要方向。随着车辆轻量化设计需求的逐渐提升,结合工业技术和新型复合材料研究的不断突破,传统轻质材料和新型复合材料在将来将逐渐取代传统钢板成为构架的主要应用材料。

As the main bearing structure of EMU(Electric Multiple Units), bogie frame was not only affected by complex alternating load, but also by environmental conditions, which requires high reliability, so the material selection requirements were strict. At present, the structure was made of weather-resistant steel plate imported from Europe and Japan with high reliability. In recent years, a breakthrough had been made in the development of weather-resistant and corrosion-resistant steel plate made in China. Tests had verified that its reliability was no less than that of steel plate imported from Europe and Japan, but it had not been applied in batch. Considering the cost and purchase cycle, domestic steel plate will be the main direction of frame application materials in the future. With the gradual improvement of vehicle lightweight design requirements, combined with continuous breakthroughs in industrial technology and new composite materials research,traditional lightweight materials and new composite materials will gradually replace the traditional steel plate and become the main application materials for the framework.