Process of ion nitro-carbon titanizing for industrial pure iron

doi:10.13251/j.issn.0254-6051.2021.12.042

Abstract

Abstract: Aiming at the problem of low hardness and poor wear resistance of nitrided layer of the electromagnetic pure iron treated by the binary ion nitrocarburizing, the surface modification treatment of ion nitro-carbon titanizing was carried out. The results show that under the same nitriding process, the surface hardness of nitrided layer is increased effectively due to the addition of titanium sponge. After nitriding at 520 ℃ for 8 h, the measured hardness of the nitrided layer is up to 513 HV0.05. But ternary ion nitro-carbon titanizing decreases the magnetic properties of pure iron, especially low magnetic properties, which is lower than the requirements of GB/T 3656—2008, and the medium and high magnetic properties still meet the requirements of the standard.

Key words: ion nitriding, electromagnetic pure iron, nitrided layer, hardness, magnetic properties

CLC Number:

TG156.8

Liu Yan, Zhang Chengxing, Li Shuangxi. Process of ion nitro-carbon titanizing for industrial pure iron[J]. Heat Treatment of Metals, 2021, 46(12): 252-255.

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