金属热处理 ›› 2021, Vol. 46 ›› Issue (4): 171-175.DOI: 10.13251/j.issn.0254-6051.2021.04.031

• 表面工程 • 上一篇    下一篇

BH催渗工艺对12CrNi3渗碳钢组织和性能的影响

刘克1, 杨兵1, 孙林2, 欧阳雪枚3, 丁卉1, 朱旭1   

  1. 1.江麓机电集团有限公司, 湖南 湘潭 411100;
    2.中国兵器工业新技术推广研究所, 北京 100089;
    3.湘潭大学 材料科学与工程学院, 湖南 湘潭 411105
  • 收稿日期:2020-10-05 出版日期:2021-04-25 发布日期:2021-05-08
  • 作者简介:刘克(1982—),男,正高级工程师,主要研究方向为防务装备热处理工艺技术,E-mail:149008871@qq.com

Effect of BH carburizing process on structure and properties of 12CrNi3 carburizing steel

Liu Ke1, Yang Bin1, Sun Lin2, Ouyang Xuemei3, Ding Hui1, Zhu Xu1   

  1. 1. Jianglu Machinery and Electronics Group Co., Ltd., Xiangtan Hunan 411100, China;
    2. China North Advanced Technology Generalization Institute, Beijing 100089, China;
    3. School of Materials Science and Engineering, Xiangtan University, Xiangtan Hunan 411105, China
  • Received:2020-10-05 Online:2021-04-25 Published:2021-05-08

摘要: 针对12CrNi3钢薄壁齿轮气体渗碳工艺存在温度高、周期长、畸变大的弊端,导致薄壁重载齿轮组织状态不佳,畸变不受控等问题,在原超级渗碳工艺的基础上添加BH-5催渗剂,开展BH催渗试验。结果表明,当渗碳层深为(1.5±0.1) mm时,BH渗碳可提升效率20%以上;使用BH催渗使12CrNi3钢渗碳后晶粒度达到7级,渗层硬度梯度下降更平缓,摩擦性能提高,畸变减小。

关键词: 12CrNi3钢, 渗碳, 畸变, BH催渗剂, 晶粒度, 硬度, 耐磨性

Abstract: Aiming to overcome the disadvantages of gas carburizing for thin-walled heavy-duty gears such as requiring high temperature and long process period, as well as uncontrollable large distortions and undesired microstructure, the BH carburizing process was adopted by adding BH-5 energizing agent based on the original gas carburizing process. The results show that when the carburized layer depth is (1.5±0.1) mm, the BH carburizing can improve the carburizing efficiency by more than 20%. The BH carburizing can refine the grain size of 12CrNi3 steel to grade 7, result in smoother hardness gradient for the carburized layer, improve friction performance, and reduce distortions.

Key words: 12CrNi3 steel, carburization, distortion, BH energizing agent, grain size, hardness, wear resistance

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