锡界面层最佳厚度试验与模拟研究

发布时间：2018-07-18 09:10

【摘要】：锡界面层(或称镀锡层)在钢套(低碳钢)与内衬(巴氏合金)结合性方面起着至关重要的作用,最佳的锡界面层厚度可以使得钢套与内衬界面获得最佳的结合强度。考虑锡界面层厚度的影响因素,设计多因素水平的正交试验,得到锡界面层厚度关于表面粗糙度、镀锡温度、镀锡时间、镀锡次数等的函数关系式;运用分子动力学对钢套与内衬的界面结合能进行模拟分析,得到界面结合能关于锡层比例(锡层与巴氏合金层比例的简称)的函数方程,再根据实际轴瓦尺寸及锡界面层厚度关系式确定锡界面层最佳厚度与工艺控制参数;试验与模拟结果表明,锡界面层厚度为40μm时,其界面结合性能最好,界面结合强度最大,模拟结果与试验相符。锡界面层厚度关系式可直接适用于油膜轴承系列化产品的制造与修复应用中。
[Abstract]:Tin interfacial layer (or tin coating) plays an important role in the bonding between steel sleeve (low carbon steel) and liner (Babbitt alloy). The optimum thickness of tin interfacial layer can make the steel liner and lining interface obtain the best bonding strength. Considering the influence factors of the thickness of tin interfacial layer, the orthogonal test of multi-factor level is designed, and the functional expression of the thickness of tin interfacial layer on surface roughness, tin plating temperature, tinning time and times of tin plating is obtained. The interface binding energy of steel liner and liner was simulated and analyzed by molecular dynamics, and the function equation of interface binding energy about the proportion of tin layer to Babbitt alloy layer was obtained. The optimum thickness of tin interfacial layer and process control parameters are determined according to the relationship between the actual bearing size and the thickness of tin interfacial layer. The experimental and simulation results show that the interface bonding property is the best and the interface bonding strength is the largest when the thickness of tin interface layer is 40 渭 m. The simulation results are in agreement with the experiment. The relationship between the thickness of tin interfacial layer can be directly used in the manufacture and repair of oil film bearing series products.
【作者单位】：太原科技大学机械工程学院;哈尔滨电机厂滑动轴承事业部;太重集团油膜轴承分公司;
【基金】：国家自然科学基金(51205269) 山西省自然科学基金(2012011018-2) 山西省回国留学人员科研(2013-093)资助项目
【分类号】：TG174.4;TG115

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