金属热处理 ›› 2021, Vol. 46 ›› Issue (4): 217-219.DOI: 10.13251/j.issn.0254-6051.2021.04.040

• 测试与分析 • 上一篇    下一篇

渗氮后氧化处理40Cr钢的耐蚀性能

岳佳宏, 孟璇, 姚小卫, 孔令飞, 杨阳, 秦国方   

  1. 山西航天清华装备有限责任公司, 山西 长治 046012
  • 收稿日期:2020-10-02 出版日期:2021-04-25 发布日期:2021-05-08
  • 作者简介:岳佳宏(1990—),女,工程师,主要研究方向为热表处理、焊接等,E-mail:a03583032085@163.com

Corrosion resistance of 40Cr steel after nitriding and oxidation treatment

Yue Jiahong, Meng Xuan, Yao Xiaowei, Kong Lingfei, Yang Yang, Qin Guofang   

  1. Shanxi Aerospace Qinghua Equipment Co., Ltd., Changzhi Shanxi 046012, China
  • Received:2020-10-02 Online:2021-04-25 Published:2021-05-08

摘要: 通过盐雾腐蚀试验法,对不同温度渗氮+后氧化处理的40Cr钢试样及不同表面防护状态下的40Cr钢试样的耐蚀性能进行对比。结果表明,40Cr钢渗氮温度在560~580 ℃之间时,中性盐雾试验时间可达200 h以上;对渗氮后氧化处理后的40Cr钢试验件边缘保护及油封处理后,中性盐雾试验时间可达200 h,外观评级(RA)为10。

关键词: 40Cr钢, 盐雾腐蚀试验, 渗氮后氧化, 表面防护状态, 耐蚀性能

Abstract: The corrosion resistance of 40Cr steel with different nitriding temperature and post oxidation treatment was compared, and the corrosion resistance of 40Cr steel under different surface protection conditions were compared through the salt spray corrosion test method. The results show that when the nitriding temperature of 40Cr steel is between 560 ℃ and 580 ℃, the neutral salt spray test time can reach more than 200 h; after the edge protection and oil seal treatment of the 40Cr steel trented by nitriding oxidation treatment, the neutral salt spray test time can reach 200 h, and the appearance rating (RA) is 10.

Key words: 40Cr steel, neutral salt spray test, nitriding and oxidation treatment, surface states, corrosion resistance

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