Yiyang stainless steel bearing surface will be covered

Why will be designed in yiyang stainless steel bearing surfaces ( 50) / small leong recently is very strange, there are a lot of customer feedback with us, they buy in other company there will be some covered the surface of the stainless steel bearing. Actually, this is a very simple question. Don't worry, let me/small hong speak slowly! Surface representation of designed trace the main reason is because of the grinding wheel cutting edge sharp enough, 'eating live occur when grinding, the vibration is larger, the specific cause of workpiece surface traces appear designed is: 1. Grinding wheel surface is rubbish and oil dirt; 2. Grinding wheel not nap circle; 3. The grinding wheel dull? Trimming is not sharp; 4. Diamond fastening frame is not strong, shaking or diamond quality is bad is not sharp; 5. Wheel hardness uneven etc. ? Face hair stainless steel bearing surface representation of hair trace after falling off the main reason is because the coarse-grained grits, between workpiece and grinding wheel grinding grain and cause. Stainless steel bearing surface during grinding were gigging specific reason is: 1. Legacy of trace coarse grinding, fine grinding when not wear off; 2. Cooling fluid in the coarse grinding particles with small particle filtering is not clean; 3. Coarse-grained grinding wheel just trimmed when grinding grain is easier to fall off; 4. Material toughness is valid or grinding wheel too soft; 5. Abrasive particle toughness and workpiece material toughness mismatch, etc?