ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2009, Vol. 30 ›› Issue (6): 36-38.

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Optimization of Heat Treatment Process of P110 Oil Casing Tube of Steel 25MnV

Li Yaxin1 , Liu Yazheng1, Zhao Jinfeng2, Zou Xiyang3， Tang Yingbo3   

  1. 1 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083 ；
    2 Sinomet Technologies Co Ltd, University of Science & Technology, Beijing 100083；
    3 Technical Center, Hengyang Hualing Steel Tube (Group) Co Ltd, Hengyang 421001
  • Received:2009-05-27 Online:2009-12-01 Published:2022-11-15

P110级25MnV钢石油套管热处理工艺的优化

李亚欣1，刘雅政1，赵金锋2，邹喜洋3，唐应波3   

  1. 1北京科技大学材料科学与工程学院，北京100083；
    2北京科大中冶技术发展有限公司，北京100083；
    3衡阳华菱钢管(集团)有限公司技术中心，衡阳421001
  • 作者简介:李亚欣(1980-),女，博士研究生，从事髙性能石油套管的产品开发及质量控制。

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Abstract: Effect of parameters of quenching at 890 〜930 ℃ for 25 ~45 min and tempering at 570 ~610 ℃ for 50 〜 80 min on structure and mechanical properties of 245 mm x 12 mm tube of steel 25MnV (% : 0. 25 〜0. 30C, 1. 50 ~ 1. 80Mn, 0. 06 ~0. 15V) has been studied by measured CCT curves and orthogonal test of heat treatment. Results show that with austenizing at 910 °C for 35 min, water quenching, and tempering at 590 ℃ for 65 min, the comprehensive mechanical properties of casing tube are optimum i. e. yield strength 878 ~906 MPa, tensile strength 923 ~ 963 MPa and elongation 16. 6% ~ 17. 4% to meet the standard requirement.

摘要： 通过CCT曲线测定和热处理正交试验,研究了890～930℃25～45 min淬火和570～610℃50～80min回火参数对25MnV钢(%:0.25～0.30C、1.50～1.80Mn、0.06～0.15V)245 mm×12 mm管组织和力学性能的影响。结果表明,采用910℃35 min水淬+590℃65 min回火,套管的综合力学性能最佳:屈服强度878～906MPa,抗拉强度923～963 MPa,伸长率16.6%～17.4%,满足标准要求。

关键词: 石油套管, 25MnV钢, CCT曲线, 热处理工艺, 优化

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