【摘要】 研究了新型热轧非调质无缝油井管用 3 3 Mn2 V钢 ,实验确定了该钢在加热过程和 95 0℃奥氏体化后冷却过程的相变点 ,以及 110 0℃奥氏体化不变形条件下和 12 0 0℃奥氏体化并模拟实际穿管、轧管变形条件下的两种过冷奥氏体连续转变曲线。提出一种不同于业界至今仍普遍认同的观点 ,即“在线常化”技术不是生产 N80钢级非调质热轧油井管必不可少的工艺途径。此观点已获工业生产现场取样的验证更多还原

【Abstract】 The phase transformation points of steel 33Mn2V,as well as continuous cooling transformation curves of the steel austenized at 1100 ℃ without deformation and austenized at 1200 ℃ then pierced and rolled were determined.The results show clearly that the commonly-used "on-line normalization" is not always necessary for production of non-quenched/tempered N80 grade seamless tubes.更多还原