Why do thick flat castings always get sand sticking defects?

Senior foundry engineer breaks down how we eliminated sand sticking and depression defects on thick large-plane gray iron castings. We upgraded the dual gating system and optimized sand formulation, dropping the scrap rate from 28% down to 1.2%. Have you dealt with this common sand casting issue? Drop a comment below.
The key to fixing sand defects on thick flat castings is controlling your molten metal rise speed. We targeted a 4mm/s rise rate, cut pouring time to 30 seconds with dual gating systems, and paired it with a calibrated sand mix. Full technical breakdown from our veteran foundry engineer in this video.
#sandcasting #metalcasting #castingprocess #castingdefects #grayironcasting

Видео Why do thick flat castings always get sand sticking defects? канала ZHY Casting