Novel slewing bearing for tooth surface self-lubrication and preparation method of novel slewing bearing

Abstract

The invention discloses a novel slewing bearing for tooth surface self-lubrication and a preparation method of the novel slewing bearing. A flow channel micro-texture is machined on the tooth surface of the slewing bearing through a laser marking technology, a solid lubricant can be more fully spread on the surface of a base body through the bionic micro-texture, so that a layer of lubricating film is formed, and the effects of reducing friction and reducing material abrasion are achieved. the composite solid lubricant is multi-element hollow spherical composite lubricant powder with a single-particle structure, and is prepared by spraying a mixed solution of ammonium molybdate, silver nitrate, boric acid and ammonium tungstate into a high-temperature atmosphere of 700-800 DEG C in a vaporific manner and carrying out thermal decomposition synthesis. The composite spherical power, serving as the solid lubricant phase, fills the micro-texture through vacuum dissolution and permeation, so that the obtained tooth surface is provided with a self-lubrication composite material with a self-lubrication phase. Compared with a traditional slewing bearing, the novel slewing bearing with the tooth surface self-lubrication function has the advantages of excellent friction reduction and wear resistance, low friction coefficient, low wear rate, higher use stability and longer fatigue life.

Description

technical field [0001] The invention relates to the technical field of tooth surface processing of slewing bearings, in particular to a novel slewing bearing for tooth surface self-lubrication and a preparation method thereof. Background technique [0002] The slewing bearing is a new type of mechanical component, which is composed of an inner ring, an outer ring, rolling elements, etc. The slewing bearing is a large bearing capable of bearing comprehensive loads, and can simultaneously bear large axial and radial loads and overturning moments. Widely used in construction machinery and new energy fields such as heavy-duty flatbed transport vehicles, container cranes, truck-mounted cranes, aerial work vehicles, and solar power generation systems. [0003] Judging from the damage cases of slewing bearing failures in recent years, the failure and damage of slewing bearings not only result in hundreds of thousands or even millions of maintenance costs, but also lead to long-term...

AI Technical Summary

Problems solved by technology

Due to the open meshing transmission between the pinion and the large tooth surface, and the long-term harsh working environment, the grease on the tooth surface will fall off quickly, which cannot effectively lubricate and protect

In addition, if the temperature of the contact surface is too high, it is easy to damage the grease film and wear the matrix.

Therefore, under the action of reciprocating cycle high stress load, the lubrication method only through grease is far from meeting the working requirements

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