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研制了一种特殊的厚壁球铁模头铸件，给出了铸造工艺及具体的工艺参数，介绍了确保该铸件质量的几种有效措施．
A special thick-walled ductile iron die casting was developed. The casting process and specific process parameters were given. Several effective measures to ensure the quality of the castings were introduced.