Low-noise lubricating grease and preparation method and application thereof

Abstract

The invention discloses low-noise lubricating grease and a preparation method and application thereof. The invention adopts the technical scheme as follows: the low-noise lubricating grease is prepared from the raw materials in parts by weight: 65-85 parts of base oil, 10-15 parts of C12-C22 hydroxy fatty acid, 2-8 parts of lithium hydroxide (LiOH.H2O), 1-5 parts of boric acid, m parts of dimethyl terephthalate (m is greater than or equal to 0, but smaller than or equal to 1), n parts of benzoic acid (n is greater than or equal to 0, but smaller than or equal to 2), 1-3 parts of antioxidant and 1-3 parts of sulfosalicylic acid. The invention further discloses the preparation method of the low-noise lubricating grease and application of the low-noise lubricating grease to high-precision miniature mechanical bearings. The low-noise lubricating grease is reasonable in formulation, and relatively high in production efficiency; after the low-noise lubricating grease is ground by a grinder, which is a patented product of the Company, the particle sizes of mechanical impurities in the low-noise lubricating grease are controlled to be smaller than those of mechanical impurities in the exhibiting lubricating grease, and the vibrating decibel value of a bearing lubricated by the low-noise lubricating grease is lower than that of a bearing lubricated by the exhibiting lubricating grease, thus ensuring the running accuracy of the miniature bearing and reducing vibration and abrasion; the vibrating decibel value of the bearing is lower than 40 decibels; and the particle sizes of the mechanical impurities in the low-noise lubricating grease are smaller than 2 microns.

Description

technical field [0001] The invention relates to the field of lubricating grease for high-precision micro-mechanical bearings, in particular to a low-noise lubricating grease and a preparation method and application thereof. Background technique [0002] With the development of the economy, mechanical equipment puts forward higher requirements for lubricating grease. In many technical fields, ultra-pure and low-noise lubricating grease is required in order to reduce the noise value of rolling bearings and the acoustic emission in the air. It meets the noise limits and tight running tolerances of precision rolling bearings and guarantees economical and energy-saving operation. For example, this kind of low-noise grease has been more widely used in sports machinery with high motion precision, high speed and long oil change interval, especially in micro-mechanical bearings with high motion precision and noise requirements, but at present The low-noise lubricating grease used...

AI Technical Summary

Problems solved by technology

For example, this kind of low-noise grease has been more widely used in sports machinery with high motion precision, high speed and long oil change intervals, especially in micro-mechanical bearings with high motion precision and noise requirements, but at present The low-noise lubricating grease used in my country has the following problems: one, low-noise lubricating grease is used as high-grade lubricating grease, and the import price is often more expensive, which is not conducive to the development and promotion of low-noise lubricating grease; The production process of lubricating grease for low-precision and low-noise miniature bearings is relatively complicated, the production cost is relatively high, and the product performance is unstable. The motion accuracy of miniature bearings, meanwhile, increases wear and vibration, resulting in greater motion noise