金属热处理 ›› 2022, Vol. 47 ›› Issue (6): 98-102.DOI: 10.13251/j.issn.0254-6051.2022.06.018

• 工艺研究 • 上一篇    下一篇

淬火油温对40CrMnMo钢钻杆组织和性能的影响

钟彬1,2, 陈义庆1,2, 李琳1,2, 高鹏1,2, 伞宏宇1,2, 艾芳芳1,2, 田秀梅1,2   

  1. 1.海洋装备用金属材料及其应用国家重点实验室, 辽宁 鞍山 114009;
    2.鞍钢集团钢铁研究院, 辽宁 鞍山 114009
  • 收稿日期:2022-01-18 修回日期:2022-04-20 出版日期:2022-06-25 发布日期:2022-07-05
  • 作者简介:钟彬(1981—),男,高级工程师,硕士,主要研究方向为腐蚀与防护,E-mail:zhong3416@tom.com

Effect of quenching oil temperature on microstructure and properties of 40CrMnMo steel drill pipe

Zhong Bin1,2, Chen Yiqing1,2, Li Lin1,2, Gao Peng1,2, San Hongyu1,2, Ai Fangfang1,2, Tian Xiumei1,2   

  1. 1. State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning 114009, China;
    2. Ansteel Iron & Steel Research Institute, Anshan Liaoning 114009, China
  • Received:2022-01-18 Revised:2022-04-20 Online:2022-06-25 Published:2022-07-05

摘要: 利用硬度测试、显观组织观察、力学性能及冲击性能测试等研究淬火油温对40CrMnMo钢钻杆淬火态的显微组织和截面硬度,回火态的拉伸性能和冲击吸收能量的影响。结果表明,淬火油温对钻杆的微观组织和硬度影响显著,进一步影响回火后的力学性能、屈强比和冲击吸收能量。随着淬火油温的升高,冷却速度先升高后降低,油温30~50 ℃为宜,淬透性好,微观组织均匀,晶粒细小,回火后力学性能好,屈强比高,具有较高的冲击性能和较好的韧性,综合性能良好。

关键词: 淬火油温, 40CrMnMo钢钻杆, 组织, 性能

Abstract: Effect of quenching oil temperature on microstructure and cross-section hardness of the quenched 40CrMnMo steel drill pipe, the mechanical properties and the impact absorbed energy of the tempered state was studied by means of hardness test, microstructure observation, tensile property and impact property test. The results show that the quenching oil temperature has a significant effect on microstructure and hardness of the drill pipe, and further affects the mechanical properties, yield ratio and impact absorbed energy after tempering. With the increase of quenching oil temperature, the cooling rate increases firstly and then decreases, the optimum medium temperature is 30-50 ℃, at which the specimen has good hardenability, uniform microstructure and fine grains. After tempering, the specimen has good mechanical properties, high yield ratio, high impact property and good toughness, and good comprehensive property.

Key words: quenching oil temperature, 40CrMnMo steel drill pipe, microstructure, properties

中图分类号: