使用砂型的传统铸造方法来制造钢中的型腔和型芯的生产。
The manufacture of cavities and cores in steel by the conventional casting method using...
通过结构分析和工艺分析，在大量工艺试验的基础上，选用高溃散性树脂砂制作型芯，并成功地研制出大型薄壁复杂结构的封闭型腔铸件。
The resin sand with high collapsibility is chosen to make the core of the near closed hollow ring on the basis of many technological experimentations through analysis of structure and process.
此系统主要解决了四个难点：浇注系统设计、冷却系统分析、型腔、型芯的曲面造型设计、装配图和零件工作图的设计绘制。
With this system, the runner gate system design, mold cooling analysis, surface modeling, and automatic drawing could all be well carried out on microcomputer.
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