低压铸造大型壁厚不均铸件缩松的解决

Elimination of Shrinkage Porosity in Low Pressure Casting Large Castings with Varied Thickness

采用改进铸造工艺促使铸件实现顺序凝固,在易出现缺陷处采取喷水激冷、增加冷铁和冷铜等措施,解决了平均壁厚为6mm、壁厚差较大的低压铸造高压电器基座大型铝合金铸件生产过程中出现的缩松问题,提高了铸件品质,为大型壁厚不均铸件的低压铸造生产提供了借鉴。

Shrinkage porosity in low pressure casting aluminum alloy high-voltage electric apparatus base with average thickness of 6 mm and varied thickness can be eliminated by improving gating system to realize sequential solidification and by setting cold iron and cold copper as well as water chilling at defect position.The method can improve the quality of the base,so it can provide a reference to low pressure casting components with varied thickness.