Stainless steel bearing surface has direct waveform traces how to solve

Stainless steel bearing surface has direct waveform traces how to solve/small hong stainless steel bearing surface has direct waveform traces how to solve? It seems to many clients are very concerned about this problem. Because, bearing surface defective, directly affect the whole bearing the impression, what's more, can affect the performance of the bearing, resulting in serious consequences. We will ground workpiece axis of vertical line cut a cross-sectional and amplification, can see its peripheral similar to sine wave? Turns its center along the axis without translation, the perimeter of the sine wave trajectory is corrugated cylinder, also called the polygon? Stainless steel bearing causes of direct wave is the movement of the grinding wheel relative to the workpiece or the pressure of the grinding wheel for grinding vibration caused by the periodical change between ACTS? This may be a forced vibration, vibration may also be a self-excited vibration, thus the workpiece on the direct wave and frequency are often more than one? Straight waveforms traces the specific reason is: 1. Grinding wheel spindle clearance is too large; 2. Wheel hardness is too high; 3. Grinding wheel static balance is bad or the grinding wheel dull; 4. Rotating speed is too high; 5. The transverse feed too big six. Grinding wheel spindle bearing wear, cooperate with clearance is too large, produce radial runout; 7. Grinding wheel pressure institutions or workbench 'crawl' etc. ? Surface representation burns surface tend to burn in the process of grinding, burns has several types, a burn is along the direction of grinding wheel processing, black spots; The second is a line or intermittent lines? Surface in the process of grinding burns, induces has the following several reasons: 1. Grinding wheel is too hard or the granularity is too fine organization too close; 2. Feeding too, cutting fluid supply, poor heat dissipation condition; 3. Rotating speed is too low, grinding wheel rotation speed too fast; 4. Grinding wheel pendulum is too big, due to the grinding depth constantly change and burns; 5. Grinding wheel dressing time finishing is not good; 6. Sharp, bond diamond grinding wheel dressing is bad; 7. When coarse grinding workpiece burn too deep, fine grinding allowance is too small, no wear off; 8. Workpiece clamping force or insufficient suction, under the effect of grinding force, the workpiece is stalling phenomenon etc. ? So how to know if in the process of grinding stainless steel bearing surface burn? It shall be by pickling can be detected on a regular basis. Acid treatment of workpiece, when the surface wet, immediately under the astigmatism lamp visual inspection, surface normal uniform dark gray, so soft, it clouds dark flecks, and the perimeter and the whole; If the decarburization, presents a gray or black spots; If the grinding cracks, the crack is cracked, so burn, one is the surface along the direction of grinding wheel processing present diablo splash block, 2 it is to present lines or discontinuous line shape. Such as appeared in the process of grinding burn phenomenon above, must be timely analysis of the reason, take effective measures to solve, put an end to mass burn.