摘要
为提高40Cr钢的硬度和耐磨性,利用低温气体多元共渗技术对碳、氮、氧元素同时渗入40Cr钢表面形成改性层进行了研究。结果表明:经多元共渗后表面改性层由疏松层、白亮层和过渡层组成;白亮层的硬度最高达900 HV,表面耐磨性能也显著提高。该工艺共渗时间短、温度低,当加热温度一定时,渗层厚度随保温时间的延长而增大。
In order to increase the hardness and wear resistance of 40Cr steel, the surface modification layer of 40Cr steel using gas multi-seepage technology of carbon, nitrogen, oxygen elements at low temperature was studied. The results show that the surface modification layer is composed of loose layer, white layer and transition layer. The hardness of white layer can be up to 900 HV. The wear resistance of 40Cr steel surface also significantly increase. The process of seepage only need short time, low temperature. Under the same treated temperature, the thick layer will increase with the increase of holding time.
出处
《热加工工艺》
CSCD
北大核心
2009年第4期139-140,144,共3页
Hot Working Technology
关键词
40CR钢
多元共渗
显微组织
显微硬度
摩擦性能
40Cr steel
multi-seepage
microstructure
microhardness
friction performance.
