Abstract：Aiming at the feature of GY15, during the steelmaking, the low basicity slag in BF was applied to keep the phosphorus and sulfur, the low basicity slag and slight stirring process in ladle was adopted during refining, and the low speed and soft cooling process also was used during casting. During rolling, the heating time was prolonged, the initial rolling temperature was increased. The rolling speed was decreased and the residence time of the rolled metal on the cooling bed was shortened. The results showed the process for GY15 was rational. The chemical compositions control was steady, the breakout accident didn′t happen, the surface and internal quality of billet was good, the phenomenon of the cracking or slipping of the rolling piece didn′t occur. The inner microstructure of the rolled products was uniform and had no banded structure, and the mechanical properties and hardness can meet the requirement of customers.
何航，刘永龙. 高品质大规格低碳高硫高磷钢GY15工艺探索[J]. 中国冶金, 2017, 27(4): 37-40.
HE Hang，LIU Yong-long. Process research on high quality heavy round sections low-carbon high-sulfur high-phosphorus steels. China Metallurgy, 2017, 27(4): 37-40.
2017, Vol. 27 
