SU1721078A1 - Metal-cladding additive to lubricating oils - Google Patents

Abstract

The invention relates to lubricating oils, in particular metal-cladding additives thereto, to increase the service life of machines and mechanisms. The goal is to increase anti-friction properties. For this, the additive contains, wt%: copper oleate 25-60; magnesium oleate 31 - 67; yttrium oleate 5-41 and oleic acid to 100. In this case, a reduction of the steel-steel friction coefficient by almost 2 times and an increase in the service life of the friction pairs. 2 tab.

Description

This invention relates to additive formulations introduced into lubricants to increase the service life of machinery.

The use of copper, bronze, tin, and lead powders for lubricants is known to be used as a cladding additive.

The disadvantage of these additives is that the servovit and film quickly breaks off the rubbing surfaces.

The metal-plating lubricant additive is known, consisting of 25-60% by weight of cuprous oleate and oleic acid up to 100%.

A disadvantage of the known additive is a high coefficient of friction. The main reason for the significant values of the friction coefficient is the low stability of the servo film obtained from the listed components. The stability of the film formed on the surface depends on the composition of the dopant and the properties of the lubricant. These factors also determine the stability of the film under different loading conditions of the operating pair.

The purpose of the invention is to increase antifriction additives.

The goal is achieved by those. that the metal-plating additive containing monovalent copper oleate and oleic acid additionally contains magnesium oleate and yttrium oleate in the following ratio, wt.%:

Monovalent copper oleate 25-60 magnesium oleate 31-67

Ylett Oleate 5-41

Oleic acid up to 100

The metal plating additive is prepared as follows.

The oxides of the elements (copper, magnesium, yttrium) are thoroughly mixed in such portions in order to obtain the content of metal oleates in the additive, wt.%:

Oleate copper25-60

Magnesium Oleate 31-67

Ylett Oleate 5-41

The mixture is then dissolved in small portions in oleic acid. After about (L

WITH

vj yu

about

vj 00

developing a homogeneous liquid, it is added to the mineral oil. Table 1 shows the composition of the additives, Table 2 shows the results of testing the additives in various modes. All additives are introduced into the oil at a concentration of 2 wt.%.

The use of the proposed additive lowers the coefficient of friction by at least 50% in a steel-steel friction pair, which significantly increases the service life of the working pairs. Additive can be used in various mechanisms and machines (cars, rail transport, river and sea vessels, tractors, etc.).

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five

Invention Formula

Metalloplastic lubricant additive containing monovalent copper oleate and oleic acid, characterized in that. In order to improve the antifriction properties, the additive additionally contains magnesium oleates and yttrium in the following ratio of components, wt%:

Monovalent copper oleate 25-60

Magnesium Oleate 31-67

Ylett Oleate 5-41

Oleic acid up to 100

Table

Examples: e - speed {of rotation of a pair; f is the average coefficient of friction; TC volumetric temperature of the pair.

table 2

Claims (1)

Claim A metal-clad lubricating oil additive containing monovalent copper oleate and oleic acid, characterized in that, in order to improve anti-friction properties, the additive further comprises magnesium and yttrium oleates in the following ratio of components. wt.%: Monovalent Copper Oleate 25-60 Magnesium Oleate31-67 Yttrium Oleate 5-41 Oleic acid Up to 100 Table! Component you The content of components, wt.% In the composition 1 (Famous) 2 3 4 5 6 Copper oleate 60 60 25 40 25 25 Oleat Mag NII - 31 31 31 67 31 Oleate itt- Riya OleinovaF • 5 5 5 5 37 acid 40 4 39 24 3 7 table 2 The composition of the additives η = 900 rpm ή = 1400 rpm f T, ° C f T, ° C 1 0.36 40 0.57 fifty 2 0.24 25 0.24 thirty 3 0.25 25 0.25 thirty 4 0.25 25 0.25 thirty 5 0.25. 25 0.25 thirty 6 0.25 25 0.25 thirty Note: n - pair rotation speed; f is the average coefficient of friction; T ^and C are the volumetric temperature of the pair.