cast nodular iron meaning in English

球墨铸铁（球铁）

In order to avoid eutectic carbide , improve nodularity , increase nodule count and increase mechanical properties , three times of inoculations were adopted in the centrifugally cast nodular iron pipes production : a ) inoculation in ladle ; 2 ) pouring stream inoculation ; 3 ) in - mold inoculation
摘要在离心铸造球墨铸铁管生产中，为防止共晶渗碳体析出，改善球化，增加石墨球数，提高力学性能，采用了三次孕育： ( 1 )包内孕育； ( 2 )浇注时随流孕育； ( 3 )型内孕育。
The present situation of energy utilizing in foundry industry was analyzed , the main effective energy saving techniques and their application was described in aspects of melting and heating systems , moulding and core - making processes and equipments , low - stress cast irons , as - cast nodular irons , feeder - less method of nodular reclaiming of cupola gas , and so on
摘要分析了铸造行业能源利用现状，从熔炼加热系统、造型制芯技术与装备、低应力铸铁、铸态球墨铸铁、球铁无冒口铸造、铸钢保温冒口与保温补贴、冲天炉废气综合利用和余热回收利用等方面阐述了铸造行业行之有效的主要节能技术及其应用。