Some batches of production showed that microstructure of nodular iron in investment casting can reach to 2 grade nodularization, 6 grade nodule size and 10% pearlite.
经批生产考核，精铸球铁铸件的金相组织可达到球化级别2级，石墨球大小6级，珠光体含量10 %的要求。
The production of light nodular graphite iron parts with high ductility in investment casting was expounded in all aspects including both technological analysis and processing control.
对熔模精密铸造高韧度球墨铸铁小件的生产，从工艺分析到生产过程的控制进行阐述。
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