摘要
本文着重于提高针阀偶件耐磨性的研究 ,对阀体进行高温渗硼处理 ,文中介绍了渗硼件的变形规律及控制方法 ,分析了渗硼层组织 ,找出控制脆性相 Fe2 B的方法 ,以获得高硬度的单相渗硼层 ,与之匹配的针阀进行物理气相沉积 PVC处理 ,获得 2 5 0 0～ 2 80 0 HV的 Ti N层 。
The article puts great emphasis on the research of wear resistance for needle valves. the valve body was proceeded with the high temperature boriding treatment, and we find the deforming method of boriding piece and the way how to control it. According to the analyses of the boriding layer, we can control the Fe 2B brittleness phase and acquire the high hardness layer of the uniphase boriding. On the other side, the needle valve was handled with PVC treatment of the physical gas phase, and was acquired the TiN layer. Its hardness is between 2500～2800HV. The examination displayed that the high hardness needle and valve body can significantly enhance the wear resistance.
出处
《传动技术》
2003年第1期30-33,共4页
Drive System Technique
关键词
喷油器
针阀偶件
渗硼处理
物理气相沉积
injection valve needle valve boriding treatment physical gas phase deposition
