By analyzing the forming condition of D-type graphite cast iron, the paper describes the influence of trace alloy elements on the structure and property of D-type graphite cast iron.
通过对D型石墨铸铁认识过程和形成条件的分析，阐述了微量合金元素对D型石墨铸铁的组织和性能的影响，对于提高铸铁的性能具有一定的指导价值。
On a certain condition, when the nodulizing grade of graphite of as cast ductile iron is grade 1 to 4, its mechanical properties are qualified.
在一定的条件下，当QT 45010铸态球铁的石墨球化级别为1 ~ 4级时，其机械性能合格。
The ductile-embrittlement transition temperature of vermicular graphite cast iron increased with increasing phosphorus content both in the as-cast and annealed condition.
蠕铁的韧性——脆性转变温度铸态和退火态均随磷含量的增加而升高。
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