NEWS

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.

The tiltable tile bearing is composed of five arc tiles, the upper half bearing is three tiltable tiles, the lower half bearing is two tiltable tiles, the tile can tilt freely on the fulcrum, the tile can swing freely when working, forming a multi-oil wedge around the shaft neck. The lubricating oil of the bearing enters the annular channel of the bearing shell through the oil inlet at the bottom of the bearing. The lubricating oil enters the bearing tile through 5 oil holes from the annular channel. The lubricating oil is distributed along the journal and discharged from both ends of the journal to complete the cooling and lubrication effect.