What are the ways to improve the service life of stainless steel hollow spheres?
In ball bearings, if the stainless steel hollow ball is subjected to high-strength contact stress compared with the stainless steel ball of motorcycle accessories under the contact effect of the inner and outer ring raceways of the bearing, the steel ball will suffer from contact fatigue. The main failure method of steel balls in ball bearings is contact fatigue falling and cracking. In addition, because the steel ball produces contact fatigue, this fatigue will affect the surface processing accuracy of the steel ball and the surface finish, thus directly affecting the bearing noise or the life of the die-cast stainless steel ball. In order to travel the contact fatigue life of steel balls, the contact fatigue life of steel balls can be extended by methods such as material selection, steel ball surface treatment and surface strengthening technology.
In the selection of materials for stainless steel hollow balls, attention should be paid to the quality of the materials selected for manufacturing steel balls. Because of the quality of the steel used for bearings, it is the steel grade that needs to be more severe and has many testing items in alloy steel. And it is used for bearings on stainless steel balls of commercial guide rails such as automobiles. More than the detection of steel balls, it also needs to pass complicated inspection before it can be adjusted to determine that steel balls can be applied to ball bearings. In order to travel the steel ball to contact the tired life, you can choose the bearing steel with a higher degree of innocence. Steel with high purity, that is, steel with less nonmetallic inclusions in bearing steel, is selected, and the distribution of non-major elements is necessary to be reasonably placed. If you guess, the size and distribution of carbon particles, the smaller the carbon particles, the more uniform the distribution, the more resistant to the fatigue of the bearing steel, and then the innocence of the data, the contact life of the manufactured steel ball has also been greatly trekked.
Secondly, the surface treatment of steel balls can be selected to extend the contact life of steel balls. Through discussion and data analysis and accounting, most of the cracks caused by contact fatigue of steel balls are on the data surface. Therefore, surface treatment of steel balls is also helpful for trekking steel balls to resist contact fatigue. There are many methods and types of steel ball surface treatment, such as electroplating, electroless plating, ion implantation technology, physical and chemical vapor deposition, carburizing or nitriding, surface quenching and cold rolling cold pressing. All of the above methods are to change the surface data to enhance the fatigue resistance of the metal for the purpose of making the steel ball travel resistance to contact fatigue. After that, the contact fatigue life of the steel ball can also be extended by the steel ball surface strengthening technology. A steel ball of a certain size and diameter can continuously impact the steel ball through vibration, so that the steel ball with small specification is mixed in it, and is continuously bumped, and then the internal stress is released to strengthen the steel ball. The surface of the steel ball is strengthened, so that it can travel its wear resistance and enhance its contact life.
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