Abstract: Metallurgical flow sheet for production of WB36 steel tube (%： 0.16C. 0.46 ~0.47Si, 1.02 ~ 1.05 Mn , 0.008 〜0.010P, 0. 001S, 0.29 ~0.30Mo, 1.17〜1.20N、0.58Cu, 0.02M), 0.05Al) is 45 t EAF-LF-VD-Φ600 mm casting bloom-piercing, Φ600 m×70 mm-Φ720 Pilger mill rolling. With controlling heating atmosphere in circular rotating furnace, temperature at soaking zone 〜1 250 ℃ , piercing temperature 1 100 °C , then blank lube tolling with three-dimensional stress by Pilger Mill, the structure of quenched-tempered WB36 steel tube is ferrite + bainite, its mechanical properties at ambient and elevated temperature, and weldability all meet the requirement of EN10216-2 standard.

Key words: WB36 Steel Tube, Large Caliber, Pilger Rolling, Research and Production

摘要： WB36钢管(%:0.16C、0.46～0.47Si、1.02～1.05Mn、0.008～0 010P、0.00IS、0.29～0.30Mo、1.17～1.20Ni、0.58Cu、0.02Nb、0.05 Al)冶金流程为45 t EAF-LF-VD-Φ600 mm铸坯-穿孔,Φ600 m×70 mm-Φ720周期轧管机组轧制.通过控制环形炉加热气氛,均热段温度～1 250℃,穿孔温度1 100℃,随后毛管在周期轧管机中以三向压应力状态进行轧制,WB36钢管淬-回火后的组织为铁素体+贝氏体,室温和高温力学性能以及焊接性能均符合EN10216-2标准要求

关键词: WB36钢管, 大口径, 周期轧管, 试制