轴承表面强化预处理工艺及装置的研究

发布时间：2018-06-03 08:19

本文选题：金属磨损自修复 + 润滑添加剂　；参考：《大连海事大学》2012年硕士论文

【摘要】：本文利用自行设计的轴承预处理台架,选择以羟基硅酸镁为主要成分的粉体作为润滑油添加剂,在不同的润滑介质和工况条件下,对6206滚动轴承进行了预处理试验。试验测量了台架主轴的噪音、润滑油表面温度和台架电机的输出功率。将测量数据生成曲线图,同时使用SEM材料测试技术对滚动轴承试样表面进行观察分析,探讨了金属磨损自修复技术的减摩抗磨机理。为了在实际中利用金属磨损自修复技术对滚动轴承进行表面预处理,本文设计出可用于实际预处理工艺的台架。试验结果表明,当润滑介质为基础油时,滚动轴承的工作表面容易受到磨损,摩擦表面出现粘着磨损,并且可以看到大量犁沟和划痕。在润滑油中加入自修复添加剂后,摩擦情况得到改善,摩擦表面的犁沟较浅,剥落坑数量减少。在滚动轴承转速为950r/min时,自修复添加剂修复效果最好,此时在摩擦表面的部分区域生成了一层高耐磨性的自修复膜。试验得出的结论说明在滚动轴承工作时,自修复添加剂通过热力学和动力学作用与摩擦表面发生反应,实现了滚动轴承磨损表面的原位在线自修复,达到了滚动轴承预处理的目的。自行设计的滚动轴承预处理装置通过其内部的轴传动和齿轮传动,可以一次性完成多个滚动轴承的表面强化预处理,从而提高了预处理的效率。
[Abstract]:In this paper, the pre-treatment test of 6206 rolling bearing was carried out in different lubricating media and working conditions by using the self-designed bearing pretreatment bench and the powder with magnesium hydroxyl silicate as the main lubricant additive. The noise of the spindle, the surface temperature of lubricating oil and the output power of the bench motor were measured. The curve is generated from the measured data and the surface of rolling bearing specimen is observed and analyzed by using SEM material test technology. The anti-friction and anti-wear mechanism of self-repairing technology of metal wear is discussed. In order to pretreat the surface of rolling bearing with metal wear self-repairing technology in practice, this paper designs a bench which can be used in practical pretreatment process. The experimental results show that when the lubricating medium is the base oil, the working surface of the rolling bearing is prone to wear, the friction surface is adhesive and wear, and a large number of ploughs and scratches can be seen. After adding self-repairing additive into the lubricating oil, the friction situation was improved, the furrow on the friction surface was shallow, and the number of spalling pits was reduced. When the rotational speed of the rolling bearing is 950r/min, the self-repairing additive has the best repair effect. At this time, a layer of self-repairing film with high wear resistance is formed in some parts of the friction surface. The experimental results show that the self-repairing additives react with the friction surface through thermodynamic and dynamic effects, and realize the in-situ on-line self-repair of the wear surface of the rolling bearing. The preprocessing of rolling bearing is achieved. The self-designed preprocessing device of rolling bearing can finish the surface strengthening pretreatment of multiple rolling bearings at one time through its internal shaft transmission and gear transmission, thus improving the efficiency of pretreatment.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.3

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