总结了采用石墨砂湿型铸造镁合金的经验，分析了镁合金铸造的特点。
The experience of cast Mg alloy in graphite green sand mold was summarized and its casting characteristics were analyzed.
粘土砂湿型铸造，铸件表面容易产生粘砂。
It is easy to adhibit sand on the surface of the casting in the foundry using green sand mold.
研制了利用植物油深加工后的废料———DK材料作为铸造用湿型砂防粘砂添加剂。
The additive of correcting metal penetration for green sand mold casting, made from the waste of oil further fabricated——namely DK material, is researched in this paper.
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