齿轮激光淬火技术替代常规渗碳工艺.docx

齿轮激光淬火技术替代常规渗碳工艺.docx齿轮激光淬火技术替代常规渗碳工艺
周建忠张永康杨继昌 毕瑞陈奉斌
摘 要：齿轮表面质量的好坏直接影响传动部件的质量和寿命，为此需 对齿轮表面进行强化处理，传统的处理方法如渗碳等存在着诸如变形较 大，硬化层沿齿廓分布不均等缺陷，从血影响齿轮的使用寿命•通过分析 可替代常规齿轮渗碳淬火的激光齿面淬火新技术研究的意义及经济价 值，着重讨论了齿面激光淬火的关键技术——表面预处理涂层与方法、 激光扫描方式•比较了激光淬火与渗碳工艺的硬度、硬化层深度及抗点蚀 疲劳性能等重要指标•结果表明：采用激光淬火齿面技术不仅能提高生产 率，降低成本，血且对于某些材料的齿轮完全能代替渗碳淬火工艺. 关键词：齿轮；激光淬火；扫描；破化层 屮图分类号：TN249； TG156. 3文献标识码：A文章编号： 1007-1741(2000)02-0039-05
A New Technology of Laser Transformation Hardening
Replacing the Present Method of Gear Case Hardening
ZHOU Jian-zhong, ZHANG Yong-kang, YANG Ji-chang
(School of Mechanical Engineering, Jiangsu University of Science
and Technology, Zhenjiang,Jiangsu 212013,China)
BT Rui, CHEN Feng-bin
(Technological Center, No. 1 Tractor Group of China, Luoyang,
Henan 471039,China)
Abstract:It is necessary that the tooth surface of gear be handled because its quality affects the serve life of transmission par t directly, but there i s so serious dis to rtion with t raditional case hardening that the life of gear might be shortened • In this paper, a new technology of laser transformation hardening which could replace the present method of gear case hardening is introduced. Its significant and economic value are analyzed. The key techniques of laser transformation hardening gear , such as surface pretTeatment coating and its methods, laser scanning pattern, are discussed in detail. A comparison between laser transformation