Based on the quantitative data of internal crack by image recognition system of sulfur print and in the light of internal crack mechanism, a statistical analysis for internal crack is made.
The Hainan iron ore as bedding material didn't crack and could remove crystal water and sulfur impurity during the course of sintering.
在烧结过程中，海南矿铺底料不发生爆裂，可以脱除结晶水及硫等有害杂质。
3
Because of containing more sulfur and phosphorus in the steel, and more carbon, high hardness in material of surfacing welding, the pinch roller often turns up hot crack.