高强度船体结构用钢铌硼微合金化工艺实践  

Nb-B Micro-alloying Process Practice of High-strength Steel for Hull Structure

作　　者：勾新勇[1] 纪瑞东[1] 王尖锐[1] 

机构地区：[1]炼钢厂

出　　处：《莱钢科技》2011年第2期34-36,共3页Laigang Science & Technology

摘　　要：介绍了氧气顶吹转炉→LF精炼→矩型坯连铸机→中型线轧制生产DH36高强度船体结构用钢的生产工艺。采用铌、硼微合金化及控轧控冷工艺相结合,提高船体结构用钢的综合性能,特别是低温冲击韧性。Produce process of DH36 high-strength steel for hull structure：top-blown converter→LF refining→rectangle billet CCM→medium-type produce line was introduced.By using Nb-B micro-alloying and controlled rolling and coolling process,comprehensive properties of steel for hull structure was improved,especially impact toughness.

关 键 词：DH36 微合金化 控轧控冷 低温冲击韧性 

分 类 号：TG142.1[一般工业技术—材料科学与工程]