Classification of pig iron


Classification of pig iron

         Iron and steel materials generally refer to iron-carbon alloys. They are classified according to their carbon content. Pigments with a carbon content (mass fraction) of more than 2% are pig iron, steels with a content of less than 2% are less than 0.04%. Of industrial pure iron.

         

 


1-1生铁的分类

分类方法

分类名称

   

1.按用途分

(1)炼钢生铁

炼钢生铁是指用于平炉、转炉炼钢的生铁,一般含硅量较低(不大于1.75),含硫量较高(不大于0.07),质硬而脆,断口呈白色,也称白口铁

(2)铸造生铁

铸造生铁是指用于铸造各种生铁铸件的生铁,一般含硅量较高(3.75),含硫量稍低(不大于0.06),断口呈灰色,也称灰口铁

2.按化学成分分

(1)普通生铁

普通生铁是指不含其他合金元素的生铁,如炼钢生铁、铸造生铁均属此类

(2)特种生铁

1)天然合金生铁——用含有共生金属的铁矿石或精矿、用还原剂还原而制成的一种特殊生铁,可用来炼钢及铸造

2)铁合金——在炼铁时特意加入其他成分的元素,炼成含有多种合金元素的特种生铁,其品种较多,如锰铁、硅铁、铬铁等,是炼钢的原料之一,也可用于铸造

 

 

 Note: Ingredient content refers to mass fraction

 

 



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