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How to judge the quality of steel balls

Update:14-12-2019
Summary:

Many salesmen who purchase steel balls may not be very […]

Many salesmen who purchase steel balls may not be very professional in steel balls. Today we will focus on how to judge the quality of stainless steel balls:
If you do not have professional testing equipment, the most direct method is to use the naked eye method, which is to see the brightness of the steel balls, whether the surface is rough, whether there are pits, whether there is a flat head, or whether cracking.
If there is testing equipment, you can first test the composition of the material and measure the accuracy of the steel ball: the accuracy of stainless steel beads is divided into roundness, surface roughness, gauge value, and tolerance. In addition, the hardness of stainless steel balls can also be detected, and the vibration value can be measured even if the level is high.