南京SKF轴承61920内外圈偏移误差的合格化问题

南京SKF轴承套圈主要包括内圈和外圈。制造过程需要锻造、热处理和其余加工程序。在轴承套圈生产过程中，任何重要因素都会导致套圈加工质量的变化达不到标准，如热处理不到位、磨削尺寸不合理等。虽然许多轴承环在加工失败后直接报废，但化学沉积可以节省一些不合格的轴承环。

Nanjing SKF bearing rings mainly include inner ring and outer ring. The manufacturing process requires forging, heat treatment and other machining procedures. In the bearing ring production process, any important factor will cause the ring processing quality changes can not reach the standard, such as heat treatment is not in place, grinding size is unreasonable and so on. Although many bearing rings are directly scrapped after processing failure, chemical deposition can s***e some unqualified bearing rings.

化学沉积

Chemical deposition

这种方法经常用于南京SKF轴承环，其尺寸公差超过设计标准。其工作原理是通过化学反应在轴承环的工作表面上形成金属涂层，然后通过附加回火使金属涂层具有与轴承环的原始表面相同的性能特征。但这种方法的缺点是它对轴承套圈的公差没有影响。

This method is often used in the SKF bearing ring of Nanjing, and its dimensional tolerance exceeds the design standard. The working principle is that the metal coating is formed on the working surface of the bearing ring by chemical reaction, and then the metal coating has the same performance characteristics as the original surface of the bearing ring by additional tempering. But the disadvantage of this method is that it has no effect on the tolerance of bearing rings.

误差偏移法

Error migration method

根据环的位置，可以采用不同的误差偏差措施。

Depending on the location of the ring, different error deviati*** can be adopted.

1，内外径偏心率

1, eccentricity of inner and outer diameters

轴承套圈磨削时，需要对南京SKF轴承套圈的内径和外径进行磨削。在磨削过程中，务须准确地计算磨削量，并确定偏心率。中点偏移量不应超过研磨时间的一半。

When bearing rings are grinded, the inner diameter and outer diameter of the SKF bearing rings in Nanjing need to be grinded. In grinding process, it is necessary to calculate the grinding amount accurately and determine the eccentricity. The midpoint offset should not exceed half of the grinding time.

2，内滚道和外滚道的中点偏移。

2, the midpoint offset of inner raceway and outer raceway.

在磨削南京SKF轴承套圈的内外直径后，须对滚道进行磨削。当轴承环的内外滚道不对称时，在计算中点偏移量之前，需要更准确的测量轴承环的内外径。

After grinding the inside and outside diameters of Nanjing SKF bearing rings, the raceway must be grinded. When the inner and outer raceways of the bearing ring are asymmetric, it is necessary to measure the inner and outer diameter of the bearing ring more accurately before calculating the midpoint offset.

热处理胀形法

Heat treatment bulging method

这种方法是基于热膨胀和冷收缩的原理。通过提高回火温度，扩大了轴承钢的内部结构，解决了轴承套圈不合格的问题。总的来说，这种方法更适合于高残余奥氏体含量的南京SKF轴承环的使用。

This method is based on the principle of thermal expansion and cold shrinkage. By increasing tempering temperature, the internal structure of bearing steel was enlarged and the problem of unqualified bearing ring was solved. In general, this method is more suitable for the use of Nanjing SKF bearing rings with high retained austenite content.

文章来自：南京SKF轴承 www.wh-skf.com

The article is from: Nanjing SKF bearing www.wh-skf.com

文章来自：南京INA轴承 www.ina-china.cn

The article is from: Nanjing INA bearing www.ina-china.cn

文章来自：南京NSK轴承 www.klbbearings.com

The article is from: Nanjing NSK bearing www.klbbearings.com

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