Study has proved that ceramic shell making by Al-Si system refractory materials with main crystal of Mollite or Kaolinite will be the ideal choice for investment casting ductile iron.
研究表明，以莫来石或高岭石为主晶相的铝硅系耐火材料是精铸球铁件的理想选择。
The main defects and their prevention for ductile iron parts in investment casting were analyzed.
分析了精铸球铁的主要缺陷及其防止方法。
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