钻机导轨40Cr钢喷丸强化与离子多元循环共渗复合工艺

doi:10.13251/j.issn.0254-6051.2022.07.045

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 264-268.DOI: 10.13251/j.issn.0254-6051.2022.07.045

钻机导轨40Cr钢喷丸强化与离子多元循环共渗复合工艺

周富佳, 刘小华

中煤科工集团重庆研究院有限公司, 重庆 400039

收稿日期:2022-03-08 修回日期:2022-05-24 出版日期:2022-07-25 发布日期:2022-08-12
作者简介:周富佳(1993—),男,工程师,硕士,主要研究方向为煤矿钻机结构设计,E-mail:335814530@qq.com
基金资助:
自立创新引导项目(2021YBXM45)

Composite process of shot peening and plasma multi-elements cycle penetrating of 40Cr steel for drill guide rail

Zhou Fujia, Liu Xiaohua

China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400039, China

Received:2022-03-08 Revised:2022-05-24 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 以钻机导轨常用材料40Cr合金钢为研究对象,分析了喷丸强化+离子多元循环共渗复合工艺的作用机理。结果表明,复合工艺处理后的试样表面硬度为912 HV0.2,渗层深度为315 μm,优于单一离子多元共渗工艺。喷丸强化通过增加扩散通道,降低扩散能量的方式增大扩散系数;循环多元共渗使试样表面与扩散层的浓度梯度呈周期性变化,为相界面反应和内扩散提供驱动力。结果表明,喷丸强化+离子多元循环共渗工艺具有协同增强作用,能有效提升钻机导轨的表面性能。

关键词: 40Cr钢, 离子多元循环共渗, 喷丸强化

Abstract: Taking 40Cr alloy steel commonly used for guide rail of drilling rig as the research object, the strengthening mechanism of shot peening and plasma multi-elements cycle penetrating was investigated. The results show that the surface hardness of the specimen treated by the composite process is 912 HV0.2, and the infiltrated layer depth is 315 μm. It is superior to single process of plasma multi-elements cycle penetrating. Shot peening can increase the diffusion coefficient by increasing the diffusion channel and decreasing the diffusion energy. Cyclic nitriding makes the concentration gradient between the surface and the diffusion layer change periodically, which provides a driving force for the phase interface reaction and internal diffusion. The results show that the combination of shot peening and plasma multi-elements cycle penetrating has a synergistic effect, which can effectively improve the surface properties of drill guide rail.

Key words: 40Cr steel, plasma multi-elements cycle penetrating, shot peening

中图分类号:

TD713

周富佳, 刘小华. 钻机导轨40Cr钢喷丸强化与离子多元循环共渗复合工艺[J]. 金属热处理, 2022, 47(7): 264-268.

Zhou Fujia, Liu Xiaohua. Composite process of shot peening and plasma multi-elements cycle penetrating of 40Cr steel for drill guide rail[J]. Heat Treatment of Metals, 2022, 47(7): 264-268.

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钻机导轨40Cr钢喷丸强化与离子多元循环共渗复合工艺

Composite process of shot peening and plasma multi-elements cycle penetrating of 40Cr steel for drill guide rail

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