金属热处理 ›› 2021, Vol. 46 ›› Issue (8): 189-191.DOI: 10.13251/j.issn.0254-6051.2021.08.035

• 工艺研究 • 上一篇    下一篇

0Cr17Ni4Cu4Nb不锈钢底座的真空热处理

贺利   

  1. 贵州风雷航空军械有限责任公司, 贵州 安顺 561000
  • 收稿日期:2021-05-25 出版日期:2021-08-25 发布日期:2021-12-09
  • 作者简介:贺 利(1975—),女,工程师,本科,主要研究方向为热处理工艺,E-mail:2827400638@qq.com

Vacuum heat treatment of 0Cr17Ni4Cu4Nb stainless steel base

He Li   

  1. Guizhou Fenglei Aviation Ordnance Co., Ltd., Anshun Guizhou 561000, China
  • Received:2021-05-25 Online:2021-08-25 Published:2021-12-09

摘要: 以0Cr17Ni4Cu4Nb不锈钢底座为研究对象,通过工艺试验方法获得了既满足力学性能要求又满足畸变量控制要求的真空固溶时效工艺。结果表明,采用1060 ℃×1.5 h固溶,油冷+460 ℃×4 h时效,空冷处理后的工件可达到技术要求,即抗拉强度≥1420 MPa,硬度≥42.5 HRC,安装面平面度≤0.5 mm。此外,在真空淬火炉中可通过调节淬火油温度,延长充气预冷时间等措施实现尺寸控制。

关键词: 沉淀硬化马氏体不锈钢, 固溶时效, 畸变控制

Abstract: In order to meet the requirements of mechanical properties and control distortion during quenching, a vacuum solid solution and aging process of 0Cr17Ni4Cu4Nb stainless steel base was determined via a series of experiments. The results show that after solution treatment at 1060 ℃ for 1.5 h, oil cooling and aging at 460 ℃ for 4 h, and then air cooling, the tensile strength of the workpiece is ≥1420 MPa, hardness is ≥42.5 HRC, and flatness of mounting surface is ≤0.5 mm. In addition, the dimension control can be realized by adjusting the quenching oil temperature and prolonging the charging precooling time in the vacuum quenching furnace.

Key words: precipitation hardening martensitic stainless steel, solid solution and aging, distortion control

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