The microstructure morphology of 38CrMoAl steel axial plunger after gas nitrocarburizing and liquid sulpho-nitrocarburizing were analyzed and observed by optical microscope and SEM,and the chemical composition of the penetrated layer were measured qualitatively by energy spectrum analysis.
用金相显微镜和扫描电镜观察和分析了38CrMoAl钢轴向柱塞经气体氮碳共渗和液体碳氮硫共渗后的组织形貌,并且用能谱分析的方法定性地测定了渗层的化学成分。
In this paper the sulpho nitro oxy carburizing and the hydrogen removing technology of round broach,the structure of diffusion layer and the relation between the depth,properties,the hydrogen content of diffusion layer and the service life of the broach are studied.
研究了连杆圆拉刀的氮碳硫氧共渗与去氢处理工艺，以及渗层组织结构、渗层深度、性能、渗层含氮量与拉刀寿命的关系。