消失模铸造法对球铁组织和力学性能的影响

THE EFFECT ON THE MECHANICAL PROPERTIES AND MICROSTRUCTURE OF THE EVAPERATIVE PATTEM DUCTILE IRON

通过干砂消失模铸造和普通砂型铸造件的力学性能对比分析，发现消失模法所获球铁件，其抗拉、抗弯、抗压和冲击韧性等力学性能指标都有大幅度提高，而硬度略有下降．

In this paper, through mechanical properties contrast analysis of ductile iron with evaperative pattern and sand mold, of is found that the evaperative pattern casting can improve tensile strength, compressive strength and tenacity obviously. But it there isn’t obvious effect on the hardness .