Since pig iron and scrap are cheap, and because there is no expensive refinement process, cast iron is a low cost material compared with steel.
由于生铁和废钢铁都便宜，又因为不需要昂贵的精炼过程，和钢相比铸铁是一种廉价材料。
Raw materials can increase the amount of scrap to reduce the amount of pig iron or no iron, pig iron effective to avoid the genetic influence on the casting.
原材料可增加废钢用量，减少生铁用量或不用生铁，有效避免生铁的遗传性对铸件的影响。
Pig iron, scrap steel, forging steel, powdered ore (gold, copper and iron), scrap copper & aluminium, coke, scrap plastic, scrap paper, rubber.
生铁、废钢、金铜铁矿粉、废铜铝、焦碳、废塑料，废纸、橡胶。
The available measures may be: 1 Importing scrap and direct reduced iron DRI, 2 constructing DRI plant at home, 3 using cold pig iron, 4 charging hot iron.
可能的对策有：(1)进口废钢和直接还原铁；(2)国内建设直接还原铁厂；(3)使用冷生铁；(4)铁水热装。
This paper presents the process of getting the qualified molten iron through melting scrap, carburant and moderate cast pig iron, which offers a new way for producing ductile iron.
介绍了增碳剂在铁液中溶解的机理和目前主要采用的投入法和喷粉法增碳工艺。
This paper presents the process of getting the qualified molten iron through melting scrap, carburant and moderate cast pig iron, which offers a new way for producing ductile iron.
介绍了增碳剂在铁液中溶解的机理和目前主要采用的投入法和喷粉法增碳工艺。
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