金属热处理 ›› 2024, Vol. 49 ›› Issue (3): 112-115.DOI: 10.13251/j.issn.0254-6051.2024.03.019

• 工艺研究 • 上一篇    下一篇

回火温度对深井石油套管用钢组织性能的影响

王娇娇, 赵林林, 高云哲, 石帅, 武晓龙, 赵燕青, 周玉青, 弓俊杰   

  1. 河北大河材料科技有限公司, 河北 石家庄 050023
  • 收稿日期:2023-09-03 修回日期:2023-12-30 出版日期:2024-03-25 发布日期:2024-04-24
  • 通讯作者: 赵林林,研究员,硕士,E-mail:zhaolinlin@hbisco.com
  • 作者简介:王娇娇(1993—),女,助理研究员,硕士,主要研究方向为特殊钢,E-mail:wangjiaojiao@hbisco.com。
  • 基金资助:
    河北省自然科学基金高端钢铁冶金联合基金(E2022318003)

Effect of tempering temperature on microstructure and properties of an oil casing steel used for deep wells

Wang Jiaojiao, Zhao Linlin, Gao Yunzhe, Shi Shuai, Wu Xiaolong, Zhao Yanqing, Zhou Yuqing, Gong Junjie   

  1. HBIS Materials Technology Research Institute, Shijiazhuang Hebei 050023, China
  • Received:2023-09-03 Revised:2023-12-30 Online:2024-03-25 Published:2024-04-24

摘要: 借助光学显微镜(OM)、扫描电镜(SEM)、拉伸试验机等设备研究了920 ℃淬火后回火温度对某深井石油套管钢微观组织和力学性能的影响。结果表明,试验钢在500~600 ℃回火得到回火索氏体,具有较高的强塑性与韧性,强塑积的波动范围为20.5~22.1 GPa·%,冲击吸收能量波动范围为94.6~100.3 J;当回火温度为550 ℃时,深井油套管试验钢具有最佳的综合力学性能,此时抗拉强度为978 MPa,屈服强度为935 MPa,强塑积为22.1 GPa·%,冲击吸收能量为100.3 J。

关键词: 石油套管钢, 回火温度, 微观组织, 力学性能

Abstract: Effect of tempering temperature on the microstructure and mechanical properties of a deep well oil casing steel quenched at 920 ℃ was studied by means of optical microscope (OM), scanning electron microscope (SEM) and tensile testing machine. The results show that the experimental steel obtains tempered martensite structure after tempered at 500-600 ℃, which has high product of strength and elongation and high toughness, where the product of strength and elongation is ranged from 20.5 to 22.1 GPa·%, and the impact absorbed energy is ranged from 94.6 to 100.3 J. When the tempering temperature is 550 ℃, the deep well oil casing experimental steel has the best comprehensive mechanical properties, with tensile strength of 978 MPa, yield strength of 935 MPa, and product of strength and elongation of 22.1 GPa·%, impact absorbed energy is 100.3 J.

Key words: oil casing steel, tempering temperature, microstructure, mechanical properties

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