Medium silicon heat-resisting nodular cast iron has been chosen instead of common grey iron to make cast aluminium crucible according to the work condition. making process and cost of the crucible.
依据铸铝坩埚的服役条件，制造工艺和成本要求，选择中硅耐热球铁取代普通灰口铸铁制造铸铝坩埚。
Heat resisting nodular malleable cast iron is a new kind of heat resistant cast iron.
耐热球墨可锻铸铁是一种新型的耐热铸铁。
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