Self-lubricating bearing filled with solid lubricating material and preparation method thereof

Abstract

The invention relates to the field of self-lubricating bearings, and in particular relates to a self-lubricating bearing filled with a solidified solid lubricating material and a preparation method thereof. A hole is pre-processed on a metal substrate, the hole is filled with a filler, after aging and curing treatment, the hole and the filler are combined into a whole as the self-lubricating bearing; the filler is prepared from the following components: 30%-35% of a binder, 50% to 60% of a solid lubricating material, and 10% to 15% of a curing agent. The filler is prepared into viscous paste at room temperature, filled into the hole of the self-lubricating bearing, allowed to stand at room temperature for more than 8 hours, placed in a vacuum drying oven, subjected to heat curing treatment, and then cooled to room temperature in a furnace. The solid lubricating material is firmly bonded in the hole of the substrate of the bearing, and the solid lubricating material has good uniformityand compactness. At high temperature of 400DEG C, the solid lubricating material can still be stable for a long time without melting or falling off in the hole of the substrate of the bearing.

Description

technical field [0001] The invention relates to a sliding bearing mainly used in food, textile, chemical industry, metallurgy, coal, water conservancy, transportation and other industries, in particular to a self-lubricating bearing filled with solid lubricating material and a preparation method thereof. Background technique [0002] Due to the limitation of friction characteristics, ordinary liquid lubricated bearings cannot meet the requirements of special working conditions such as high temperature, heavy load, high dust, difficult or impossible to lubricate, and self-lubricating technology bearings can achieve oil-free lubrication, completely breaking through the limitations of grease lubrication . The bushing materials of embedded self-lubricating bearings are generally steel-based, copper-based, zinc-based and composite non-metallic materials. Steel-based and copper-based self-lubricating bearings are widely used due to their low cost and excellent tribological proper...

AI Technical Summary

Problems solved by technology

For the embedding of PTFE-type solid lubricating posts, on the one hand, due to the low dimensional accuracy of the drilling of the shaft sleeve, the hole diameter error is large. If the hole diameter is too large, the lubricating post will fall off, and if the hole diameter is too small, it will be difficult to insert; for graphite Type solid lubricating column, due to its poor elasticity and plasticity, excessive hammering force will cause surface or overall cracks, resulting in increased manufacturing costs