摘要
通过90t EBT电弧炉-100 t LF+VD-喂丝-Φ20mm CC流程开发了Nb-Ti微合金化海底管线管钢HSL450S(%:0.06C、0.40Cr、0.15Mo、0.02Ti、0.05Nb)。经30炉分析得出,[O]为35.2×10^(-6),[N]为78.8×10^(-6)。该钢的组织为回火贝氏体-珠光体+多边形铁素体。轧制的Φ102mm×14mm和Φ168.3mm×8.7mm HSL450S钢管的晶粒度为10～11级,机械性能满足海底管线管X60、X65钢级标准要求。
The Nb-Ti microalloying undersea linepipe steel HSL450S （0. 06C, 0. dOCr, 0. 15Mo, 0. 02Ti, 0. 05Nb） has been developed by 90 t EBT arc furnace - 100 t LF ＋ VD - wire feeding - φ220 mm CC flow sheet. It was obtained by analyzing 30 heats that [ O] was 35.2 x 10 -6 and [ N] was 78.8 × 10^-6. The structure of steel was tempered bainite-pearlite ＋ polygonal ferrite. The mechanical properties of φ102 mm × 14 mm and φ168.3 mm ×8.7 mm tube of steel HSL450S with grain size rating 10 - 11 met the requirement of standard of for undersea linepipe steel X60 and X65 grade.
出处
《特殊钢》
北大核心
2007年第6期63-64,共2页
Special Steel
