扬州SKF轴承离心系列失效报废

1，对失效扬州SKF轴承的外观进行了测试。一个凹痕被外部物体挤压了。钢球表面为剥落和***压痕，如图所示。严重疲劳剥落发生在整个通道的内部通道。内环的端部不异常，内环内径有轻微的蠕动腐蚀。沿着扬州SKF轴承外圈的周边沿泵侧存在裂纹，并且存在轴向断裂。在对称方向的外表面上存在严重的蠕动腐蚀痕迹。圆的表面在轴上清晰可见。外环有明显的断裂，没有磨痕，炭化后有黑色油渍。

1, the appearance of failed SKF bearing in Yangzhou has been tested. A dent was squeezed by an external object. The surface of the steel ball is spalling and foreign body indentation, as shown in the figure. Severe fatigue spalling occurs in the internal passage of the whole passage. The inner part of the inner ring is not abnormal, and the inner diameter of the inner ring has slight creeping corrosion. Along the periphery of the SKF bearing outer ring of Yangzhou, there are cracks along the pump side, and there is axial fracture. There is a serious creeping corrosion mark on the outer surface of the symmetrical direction. The surface of the circle is clearly visible on the axis. The outer ring has ***ious fracture, no grinding marks, and black oil stains after carbonization.

2，扬州SKF轴承在安装和运行初期均正常，表明安装过程不会对轴承造成严重损坏。维修后1个月出现异常语音，维修频繁。

2, the SKF bearing of Yangzhou is normal at the initial stage of installation and operation, indicating that the installation process will not cause serious damage to the bearing. Abnormal voice appeared 1 months after maintenance and frequent maintenance.

根据电厂提供的运行条件，发现润滑油用于润滑润滑油以满足轴承的工作条件，轴承上的黑色碳化油标记表明润滑油是足够的NT。

According to the operating conditi*** provided by the power plant, it is found that the lubricating oil is used to lubricate the lubricating oil to meet the working conditi*** of the bearing, and the black carbonated oil marks on the bearing indicate that the lubricating oil is sufficient NT.

根据扬州SKF轴承的结构和工作特点，外圈脱落后，沟槽的应力状态将发生很大变化，断裂趋势将发生并迅速扩展。断裂的外部痕迹也表明，断裂从疲劳剥落深度逐渐开始，逐渐延伸到断裂。外圈的蠕变表明轴承区域是对称的。蠕动腐蚀区域中的轴标记示出轴承的安装位置（轴向线性轨迹对应于轴承座的分离表面）和扬州SKF轴承上的异常轴承区域轴承。

According to the structure and working characteristics of Yangzhou SKF bearing, the stress state of groove will be changed greatly after the outer ring falling off, and the fracture trend will occur and expand rapidly. The external traces of fracture also indicate that the fracture begins gradually from the fatigue peeling depth and gradually extends to the fracture. The creep of the outer ring indicates that the bearing area is symmetrical. The axial mark in the peristaltic corrosion area shows the installation position of the bearing (the axial linear trajectory corresponds to the separation surface of the bearing seat) and the abnormal bearing area bearing on the Yangzhou SKF bearing.

,3，轴承座的异常分布必然会导致滚道的异常载荷，从而导致轴承早期疲劳***、膨胀和剥落。考虑到泵工作轴的挠度会影响轴系的动平衡，轴承会产生较大的离心力，从而导致轴承过载。然而，当扬州SKF轴承固定在外圈上时，内环旋转并离心机。铝力（偏心径向载荷）在外圆上产生摩擦痕，内圆集中在偏心方向上，与轴承故障不一致。

3. The abnormal distribution of the bearing seat will inevitably lead to the abnormal load of the raceway, which will lead to the early fatigue failure, expansion and spalling of the bearing. C***idering that the deflection of the working shaft of the pump will affect the dynamic balance of the shaft system, the bearing will produce greater centrifugal force, which will lead to bearing overload. However, when the Yangzhou SKF bearing is fixed on the outer ring, the inner ring rotates and centrifuges. Aluminum force (eccentric radial load) produces friction marks on the outer circle, and the inner circle concentrates in the eccentric direction, which is inc***istent with the bearing fault.

经过多年的使用，轴承孔的尺寸会受到温度和磨损的影响。例如，扬州SKF轴承座具有圆度偏差会引起外环挤压，导致较大的异常载荷。异常负载通过球体、笼和内环穿过外环。内圈充满圆形摩擦痕迹。在外环通道上有一个双轴承区域或多个轴承区域。有两个蠕动旋转和两个外圈轴承故障。扬州SKF轴承内槽表面与腐蚀痕迹、笼损和严重疲劳剥落重叠。因此，导致轴承早期失效的异常载荷不是由工作轴偏转产生的离心力引起的，而是由外环的异常挤压变形引起的圆度偏差引起的。

After years of use, the size of the bearing bore will be affected by temperature and wear. For example, the roundness deviation of Yangzhou SKF bearing block will cause external ring extrusion, resulting in larger abnormal load. The abnormal load passes through the outer ring through sphere, cage and inner ring. The inner ring is full of circular friction marks. There is a double bearing area or multiple bearing areas on the outer ring passage. There are two peristaltic rotation and two outer ring bearing failures. The surface of SKF bearing inner grooves in Yangzhou overlaps with corrosion marks, cage damage and severe fatigue peeling. Therefore, the abnormal load that causes the early failure of the bearing is not caused by the centrifugal force produced by the deflection of the working axis, but is caused by the roundness deviation caused by the abnormal extrusion deformation of the outer ring.

文章来自：扬州SKF轴承 www.wh-skf.com

The article comes from: Yangzhou SKF bearing www.wh-skf.com

文章来自：扬州INA轴承 www.ina-china.cn

The article comes from: Yangzhou INA bearing www.ina-china.cn

文章来自：扬州NSK轴承 www.klbbearings.com

The article comes from: Yangzhou NSK bearing www.klbbearings.com

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