铁道车辆铸钢件材料的升级换代

Upgrade of steel casting materials in railway rolling stock industry

介绍合金铜铸件的一般特点和B级、C级与E级钢的主要特点及其在生产中应注意的问题。结合铁道车辆铸钢件在重载、提速中暴露的问题，阐述B级、C级和E级钢作为铸钢件材料的迫切性，并提出今后工作的若干建议。

This paper presented the general performances of alloyed steel castings,the main characteristics of B-,C-,E-grade casting steels as well as the matters needed paying attention to in production practice. Considering that the commonly used alloy steel castings of railway rolling stocks came up against difficulties in higher speed and heavier haul running,the author stressed on the urgency of using B-,C-,or E-grade steels for these casting parts and put forward several proposals for the research work in the future.