金属热处理 ›› 2020, Vol. 45 ›› Issue (1): 31-33.DOI: 10.13251/j.issn.0254-6051.2020.01.007

• 会议专栏 • 上一篇    下一篇

30CrMnSi钢近亚温超高强度热处理工艺

王金玲, 王海云, 罗青云, 姚春臣, 童时伟, 刘赞辉, 谢军辉   

  1. 江南工业集团有限公司, 湖南 湘潭 411207
  • 收稿日期:2019-07-01 出版日期:2020-01-25 发布日期:2020-04-03
  • 通讯作者: 姚春臣,研究员级高级工程师,硕士,长期从事材料及热处理、焊接、塑性成形等专业技术工作,发表论文200余篇,联系电话:13017320347,E-mail:yaocc112@163.com
  • 作者简介:王金玲(1985—),女,工程师,学士,主要从事材料及热处理工艺技术工作。

Heat treatment technology of ultra-high strength of quasi-intercritical quenching of 30CrMnSi steel

Wang Jinling, Wang Haiyun, Luo Qingyun, Yao Chunchen, Tong Shiwei, Liu Zanhui, Xie Junhui   

  1. Jiangnan Industries Group Co., Ltd., Xiangtan Hunan 411207, China
  • Received:2019-07-01 Online:2020-01-25 Published:2020-04-03

摘要: 对30CrMnSi钢进行了淬火+低温回火的超高强度热处理工艺试验。结果表明,淬火温度越高,其强度越高;常规淬火温度淬火的韧性不足,亚温淬火的硬度偏低,均不能满足产品使用性能要求,低于常规淬火温度、高于亚温淬火温度的近亚温淬火复合热处理工艺可以使30CrMnSi钢的抗拉强度达到1520 MPa以上,并且具有较好的韧性,能满足产品耐高速冲击使用要求。

关键词: 热处理, 30CrMnSi钢, 近亚温淬火, 超高强度, 强韧化

Abstract: Ulta-high strength heat treatment process test consisting of quenching and low-temperature tempering was carried out on the 30CrMnSi steel. The results show that the higher the quenching temperature, the higher the strength is. Both the conventional temperature and intercritical quenching can't meet the requirements of product performance, the dual-heat treatment process of quasi-intercritical quenching at below the conventional quenching temperature and above the intercritical quenching temperature and low-temperature tempering can make the tensile strength of 30CrMnSi steel reach more than 1520 MPa and has good toughness, which can meet the requirements of high-speed impact resistance of products.

Key words: heat treatment, 30CrMnSi steel, quasi-intercritical quenching, ultra-high strength, strength and toughening

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