通过试验分析，首次在灰铸铁型材断面上观察到球状石墨的带状区，并对这种带状组织及成因进行了分析探讨。
This paper analyses the band structure with nodular graphite that was first found on the cross section of the gray iron bar in the experiment.
通过在中硅耐热铸铁中添加不同组合的合金元素稀土、铜、钛使其合金化，经过孕育和球化处理，得到铁素体+珠光体+球状石墨的金相组织。
Adding different alloy combination of re, copper and titanium, then through gestation and nodulizing disposal, we got the fine texture of ferrite pearlite and spheroidal graphite.
讨论了石墨的物理性能，分析了片状和球状石墨聚集状态对铸铁气割性的影响。
The influence of flake and spheroidal graphite on oxyacetylene cutting characteristic of cast iron has been analysed.
本文利用扫描电镜对深腐蚀蠕墨铸铁试样中的蠕虫状石墨及其与片状石墨、球状石墨之间的过渡形态进行了观察研究。
The paper investigated the vermicular graphite and its transition morphologies to lamellar and spheroidal graphite in deep-etched compacted vermicular iron bars by SEM.
球墨铸铁是一种铁、碳、硅的合金，其中碳以球状游离石墨存在。
Ductile iron is the alloy of iron, carbon and silicon, of which carbon is in the form of spherical free graphite.
球墨铸铁是一种铁、碳、硅的合金，其中碳以球状游离石墨存在。
Ductile iron is the alloy of iron, carbon and silicon, of which carbon is in the form of spherical free graphite.
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