工作试验结果表明，新材质制造的坩埚使用寿命是普通铸铁坩埚的2—3倍。
The industrial tests have shown that the service life of new alloy cast iron crucible is 2-3 times as long as ordinary grey cast iron crucible.
工业试验结果表明，新材质制造的坩蜗使用寿命是普通铸铁坩埚的2 ~3倍。
The industrial test results have shown that the service life of new low alloy cast iron crucible is 2-3 times as long as ordinary grey cast iron 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。
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.
可以使用轧制钢、铸钢或坩埚钢、或者铸铁装置，不允许用生铁。
Rolled, forged, or cast steel, or malleable iron fittings may be used. Cast iron is not permissible for fittings.
可以使用轧制钢、铸钢或坩埚钢、或者铸铁装置，不允许用生铁。
Rolled, forged, or cast steel, or malleable iron fittings may be used. Cast iron is not permissible for fittings.
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