What is the function of grease for uniform cross-section thin-walled bearings? How to clean and maintain uniform cross-section thin-walled bearings?

Constant Thin Wall Bearings Grease will perform the following basic functions: Reduce friction. The grease forms an oil film between the rolling elements and the inner and outer rings, and between the cage and the outer ring of the rolling elements. This liquid lubricating film can reduce and prevent metal contact, greatly reduce the wear between the friction parts of the uniform cross-section thin-walled bearing, and also reduce the heat generated by their mutual friction.

　　Under basic load, elastic deformation will occur between the rolling surfaces of uniform cross-section thin-walled bearings; when eccentric load occurs in uniform cross-section thin-walled bearings, relative sliding will occur on the rolling surfaces. Liquid lubricating film can greatly reduce the wear caused by the above phenomenon, thereby extending the fatigue life of uniform cross-section thin-walled bearings. Grease can dissipate the heat generated by the rolling working surface through rolling flow and conduction. Shock reduction and noise reduction. The lubricating oil film can absorb part of the energy, and can also convert part of the concentrated load into a distributed load, which plays a role in shock reduction and noise reduction. Sealing. Grease can also prevent dust and moisture from invading the rolling working surface of uniform cross-section thin-walled bearings. Some oil seals are coated with uniform cross-section thin-walled bearing grease for filtering. Rust and corrosion prevention. Thin-walled rolling bearing grease is generally a good rust and corrosion inhibitor that can prevent uniform cross-section thin-walled bearings from rusting.

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　　Maintenance to keep uniform cross-section thin-walled bearings clean requires shrinkage holes: During the solidification process of molten steel after pouring, holes are formed in the center of the ingot due to volume shrinkage, which is called shrinkage holes. In order to reduce the harm of shrinkage steel, a reasonable process should be adopted during the crystallization process of molten steel pouring, so that the holes formed by volume shrinkage move to the head of the ingot, and the shrinkage holes are cut off after the initial rolling of the ingot. However, due to improper pouring and cooling processes, such as unreasonable ingot setting, insufficient insulation of the ingot head, less removal of the ingot head after initial rolling, etc., shrinkage holes remain in the steel, which will be shown in macroscopic inspection.

　　White spots: Short and discontinuous hair-like open cracks that appear in the center or near the center of a thin-walled bearing with uniform cross-section after pickling, or silver-white spots with a smooth surface, approximately circular or elliptical, that appear on the longitudinal fracture of steel are called white spots. The reasons for the formation of white spots are, first, the presence of hydrogen in the steel; secondly, the steel is not slowly cooled for 600 to 300 ℃ after forging, and the hydrogen is not fully diffused, resulting in structural stress and cracking. The longitudinal and transverse mechanical properties of steel or parts with white spots are significantly reduced, so steel or parts with white spots have no use value.

　　Overburning: When heating the steel ingot or billet during forging, the temperature is too high, and the surface is invaded by oxygen along the grain boundary, producing oxides. Some low-melting point compounds between the grain boundary and the dendrite axis melt, and thus form cracks or holes after condensation. This phenomenon is called overburning. After the steel is burned, it will crack when forged again. Even if it does not crack, the strength and impact toughness of the steel will be greatly reduced, so it cannot be used.