球墨铸铁轴箱铸件的铸造工艺设计

Process Design of Nodular Cast Iron Casting for Axle Box

球墨铸铁轴箱工艺设计中,合理布局浇注系统的同时,在轴承室热节的顶部设置发热保温冒口进行补缩和排气。同时在轴承室和电机安装部位设计冷铁,辅助调节热节,缩短铁液结晶凝固的时间,避免这些部位的石墨因此而长大为粗大石墨或出现球化衰退现象,确保轴箱铸件整体材质的球化率和石墨等级达到设计标准要求。

Reasonable planning in-gating system, and setting up heat insulating feeder over the top of the hot spot of the bearing room to exhaust and feed during the casting design of the axle box. Except this, using chill to adjust hot spot at the bearing room and the bolt hole which connecting the traction motor, then to reduce the solidification time of these molten iron, avoiding the graphite to grow into the coarse graphite or degradated spheroidization, so to ensure that the spheroidization and graphite grade of the axle box casting to reach the requirements of the design standard.