论文部分内容阅读
在腐蚀介质中和磨损条件下工作的零件大都采用45×14H14B2M,03×17H8T5MφAB和25×18H8B2耐蚀奥氏体钢。这些零件表面均经氮化处理。该钢所获得的渗氮层最大厚度可达0.2mm,但在多数情况下,特别是在高接触负荷下这样的渗层厚度是远远不够的。针对加快氮化过程和增加氮化层厚度的问题进行过大量的研究。提出了预先渗钛法,并研制出在加热温度高于氮化温度条件下氮化层的“增厚”过程。但由于上述方法工艺复杂,
In the corrosive medium and wear conditions work most of the parts using 45 × 14H14B2M, 03 × 17H8T5MφAB and 25 × 18H8B2 corrosion resistant austenitic steel. The surfaces of these parts are nitrided. The maximum thickness of the nitrided layer obtained by the steel can reach 0.2 mm, but in most cases, such a thickness of the layer is not enough, especially under high contact load. A large number of studies have been conducted to speed up the nitriding process and to increase the thickness of the nitride layer. Proposed titanium pre-infiltration method, and developed in the heating temperature is higher than the nitriding temperature nitride layer “thickening” process. However, due to the complexity of the above process,