SKF进口轴承2209TN9的疲劳强度与注脂方式

对于轴承，存在疲劳强度问题。有些SKF进口轴承质量好，疲劳强度高。如果质量差，自然疲劳强度低。疲劳强度不是很高。在多大程度上？让我们详细讨论一下。
For bearings, there is a fatigue strength problem. Some SKF imported bearings h***e good quality and high fatigue strength. If the quality is poor, the natural fatigue strength is low. The fatigue strength is not very high. To what extent? Let's discuss it in detail.
在循环载荷下，即使应力低于屈服强度，材料也经常断裂。这种现象称为疲劳断裂。进口轴承的疲劳断裂，特别是gao强度进口轴承材料的疲劳断裂，在断裂前通常没有明显的塑性变形，难以检测和预防，具有很大的***性。我们bi须注意这一点。不要让这些***存在。我们需要及时笑除它们。
Under cyclic loading, the material often breaks even if the stress is lower than the yield strength. This phenomenon is called fatigue fracture. Fatigue fracture of imported bearing, especially the fatigue fracture of Gao strength imported bearing material, usually has no ***ious plastic deformation before fracture, which is difficult to detect and prevent, and has great danger. We Bi need to pay attention to this point. Don't let these dangers exist. We need to laugh them out in time.
SKF进口轴承疲劳强度是指材料在反复应力循环后连续出现裂纹的***大应力，用来表征材料的疲劳断裂抗力。通过实验测量了材料的循环应力。循环应力越小，断裂前循环次数越多。当应力降低到一定值时，曲线趋于平缓，即在应力作用下，材料在反复应力循环后不会断裂。
The fatigue strength of SKF imported bearings refers to the *** large stress in which cracks occur continuously after repeated stress cycles, which is used to characterize the fatigue fracture resistance of materials. The cyclic stress of the material was measured by experiments. The ***aller the cyclic stress, the more the number of cycles before fracture. When the stress decreases to a certain value, the curve tends to be flat, that is, under the stress, the material will not break after repeated stress cycles.
疲劳断裂过程是材料表面和内部裂纹的形成、扩展、连接和扩展过程。通过改进SKF进口轴承设计（如避免尖角、降低表面粗糙度等避免应力集中的措施）和表面强化，可以提高构件的扛疲劳性能。
Fatigue fracture process is the process of formation, propagation, connection and propagation of cracks on the surface and inside of materials. By improving the design of SKF imported bearings (such as ***oiding sharp angle, reducing surface roughness and other measures to ***oid stress concentration) and surface strengthening, the carrying fatigue performance of components can be improved.
不建议注入过多的润滑脂。我们知道润滑脂具有良好的粘附性、耐磨性、耐温性、防锈性和润滑性。可提高耐高温氧化性，延缓老化，溶解碳，防止金属碎屑和油污结块，提高SKF进口轴承机械的耐磨性、耐压性和耐腐蚀性。
It is not recommended to inject too much grease. We know that grease has good adhesion, wear resistance, temperature resistance, rust resistance and lubricity. It can improve high temperature oxidation resistance, delay aging, dissolve carbon, prevent metal debris and oil pollution from agglomerating, and improve wear resistance, pressure resistance and corrosion resistance of SKF imported bearing machinery.
因此，大量实验证明，当注脂量小于内腔容积的30个百分点时，轴承中不饱和润滑脂的泄漏量很小。值得注意的是，虽然有时脂肪***并不多，但脂肪***方法不规范、不科学，导致轴承室油不均匀，轴承部分饱和，早期出现快速“挤出”现象。
Therefore, a large number of experiments h***e proved that the leakage of unsaturated grease in bearings is very ***all when the amount of grease injection is less than 30% of the volume of the inner c***ity. It is worth noting that although there are not many fat injecti*** sometimes, the method of fat injection is not standardized and scientific, resulting in uneven oil in the bearing chamber, partial saturation of the bearing, and rapid "extrusion" phenomenon in the early stage.
对于油平衡过程，建议适当提高转速。针对密封SKF进口轴承的不同性能特点和用途，提出了不同重Dian和内容的密封轴承试验评价方法。但是每个性能测试都是一个重要的研究课题。同时，密封轴承试验评价方法也是验证和改进设计和质量控制的重要手段。
For the oil balance process, it is suggested to increase the speed appropriately. Aiming at the different performance characteristics and uses of imported sealed SKF bearings, the test evaluation methods of sealed bearings with different Dian weights and contents are put forward. But every performance test is an important research topic. At the same time, the evaluation method of seal bearing test is also an important means to verify and improve the design and quality control.
文章来自：SKF进口轴承 www.wh-
Article from: SKF imported bearing www.wh-
文章来自：INA轴承 a-
Articles from: INA Bearing a-
文章来自：NSK轴承
Article from: NSK Bearing
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