高速列车用踏面清扫器本体铸件的研制

Development of Body Casting Used for Tread Surface Cleaner of High Speed Railway Train

介绍了高速列车踏面清扫器本体铸件的结构及技术要求研制过程。为提高铸态铁素体含量和铸态力学性能，采用了类似于中硅球铁的成分，w（Si）量和w（C）量的控制范围分别为3．5％～4．3％和3．0～3．5％；为确保铸造工艺的可行性，采用铸造模拟软件进行了铸造过程模拟，并根据模拟结果对工艺进行了改进。生产结果，铸件强度和伸长率均高于QT500—7标准要求，铸件无内部和表面质量问题，使用情况良好。

The development process of the body casting used for tread surface cleaner was introduced. In order to increase the as-cast felxite content and as-cast mechanical properties,the composition similar to that of the medium silicon nodular iron was adopted：the control range of Si content and C content was respectively of 3.5%-4.3% and 3.0%-3.5%. With the purpose to ensure the feasibility of the casting method design,foundry simulation software was used to conduct casting process simulation, and based on the simulation result, the casting method was improved. As the result of production, both the as-cast strength and elongation was higher than the requirements of QTS00-7 grade nodular iron,the castings had no internal and outer quality problem and the application situation was satisfactory.