Process and Key Points of Stainless Steel Bearing Block

"Because the steel has good hardenability and poor thermal conductivity, the cooling after forging must also be slow, otherwise it is prone to cracks.". If the stop forging temperature is too high, it is easy to generate network carbide, and the coarse network carbide structure cannot be eliminated in the subsequent annealing process. This material has high deformation resistance, low plasticity, and poor forging performance at high temperatures, requiring special requirements for the material and structure of the mold.

In order to better evaluate the noise level of bearings, in actual measurements, vibration values at three points evenly distributed on the front and back sides of each set of bearings are measured, and the larger test value is taken as the effective vibration value of the bearing.

(1) Low noise lubricating grease can greatly reduce the vibration and noise of bearings. After greasing, 00% of them meet the requirements of Group Z2 (40 dB), and 98% meet the requirements of Group Z3 (38 dB). The product has a certain reserve accuracy. Due to some factors that are difficult to avoid in the system, such as the stability of the machine tool, the uneven quality of the grinding wheel and the dressing quality of the grinding wheel during the grinding process, and the uneven quality of the replacement and dressing of the oilstone and oilstone during the channel superfinishing process, the entire process system has certain fluctuations while meeting the processing accuracy requirements of the process, so the vibration value data in Table 2 has a certain degree of dispersion.

(2) During the testing process, it was found that the vibration value of 5 sets of bearings tested on one side was relatively high, and the lubricating grease was removed. After disassembly, it was found that one side of the groove had poor ultra-precision quality and left grinding wheel marks.