2017-01-05 14:40:22
常用的用作铸铁增碳剂的材料有：人造石墨、煅烧石油焦、天然石墨、焦炭、以及用这类材料配成的混合料。
Commonly used for cast iron carbon additive materials are: artificial graphite, calcined petro coke, nature graphite, coke, and as the mixture with these materials.
