FLSmidth轴套出口铸件的研制

通过分析轴套铸件铸造难点,确定合理铸造工艺：采用顶部环形冒口,使冒口延续度达到100%,避免缩孔、缩松产生;采用底部间接外冷铁工艺,延长冒口补缩距离,使铸件获得自下而上的顺序凝固,获得组织致密铸件;采用铸件表面全敷铬铁矿砂工艺,提高表面质量。通过对各化学成分精准控制,获得力学性能达标的铸件。

The Development of FLSmidth Sleeve Export Casting

Through analyzing casting diffficulties,the reasonable casting process was determined as follows： using the annular riser on the top to achieve to 100% of continuity of riser to avoid shrinkage hole and shrinkage, using indirect external iron chill in the bottom to extend riser feeding distance and make casting solidify from the bottom up to obtain sound castings, using chromite sand coating process to improve the surface quality. By means of precise control of chemical composition,the castings with standard mechanical properties were obtained.