permanent mold

Analysis for Defects of Water Faucet Handle by Permanent Mold Casting

金属型铸造水嘴手柄缺陷分析

The study was taken an oil sump as an example to analyze crack defect of permanent mold aluminum casting with thin thickness, deep cavity and large plane, and two causes, thermal stress and shrinkage stress during casting solidification.

以油底壳为例，分析了壁薄、深型腔、大平面铝合金金属型重力铸件，产生裂纹缺陷的原因，确定是合金凝固时期的热应力和收缩应力所致。

Based on the permanent mold casting process of Al-piston, with top insulating riser feeding process, semi-permanent insulating sleeves matching permanent mold casting process of Al-piston have been designed.

根据金属型铸造铝活塞的工艺特点，采用顶部保温冒口补缩工艺，设计了能与铝活塞金属型铸造工艺相匹配的半永久型保温冒口套。