NEWS

When disassembling the spherical roller bearing for maintenance, first record the appearance of the FAG bearing, confirm the remaining amount of lubricant, and then wash the bearing after sampling the lubricant for inspection. As cleaning agents, gasoline and kerosene are generally used.

Internal stress is easily formed during plastic molding, and the stress concentration areas are prone to cracking after painting. Annealing treatment or whole surface treatment can be used to eliminate stress. The annealing treatment is to heat the ABS plastic molded parts below the heat deformation temperature, that is, 60°C, and keep it warm for 2 hours. Since the use of this process requires a large amount of equipment investment, the entire surface treatment technology can be used, that is, a solution that can eliminate the internal stress of the plastic part is prepared and the surface of the plastic part is treated for 15 to 20 minutes at room temperature.

Due to its own process requirements, this method requires that the outer or inner pipe surface be round in order to fit the composite inner and outer tubes. However, due to the incompressibility of the transmission cable and insulating material, the electrically conductive drill pipe body will be inside There is a "slight convexity" in the cable fitting part, so the pull-out composite and mechanical expansion joint composite will cause damage to the insulation and performance of the cable, and the applicability is not strong.

Common quality defects of FAG bearing parts after heat treatment include: overheating, underheating, quenching cracks, insufficient hardness, heat treatment deformation, surface decarburization, and soft spots in the quenching microstructure.