SU859427A1 - Lubricating composition for friction assemblies - Google Patents

Description

The invention relates to lubricants having a high antifriction and anti-wear properties and ensuring stable operation of the friction unit in the selective transfer mode. Known grease based on glycerin, the use of which in the nodes of the trap, one of the elements of which is made of copper alloy (copper) or contains a copper-containing component as a filler, makes it possible in most cases to realize an electrophoresis selective effect l7. However, glycerin cannot be stable operation of the friction unit in the mode of selective transfer when using some copper alloys as the bearing material, for example, the BRAZH 9-4, BRAZZ-10-1-1.5 bronze grades etc. A high coefficient of friction during lubrication with glycerin reduces the service life of bearings from these alloys and reduces the load-speed mode of operation of the friction unit. Also known is a lubricant composition containing benzotriazole, a derivative of polyoxypropylene and glycerin 1. A disadvantage of the known composition is that during long-term operation its viscosity and anti-wear properties are significantly reduced. Moreover, the high rate of development of aging processes in glycerol and in additives significantly reduces the lifetime of the friction node in the selective transfer mode. The purpose of the invention is to increase the anti-wear properties of the composition under conditions of selective transfer. The goal is achieved by the fact that the composition based on glycerin additionally contains potassium sulphate, copper sulfate glycerate, hydroquinone, aluminum chloride, formaldehyde and epoxy resin at the following ratio of components, weight 4: Copper sulphate 1-5 glycerate potassium sulphide 0.50 2 Hydroquinone 0.01-1.2 Aluminum chloride 0.02-3 Formaldehyde1-6 Epoxy resin 0.01-4 GlycerolLO 100

Examples of the compositions of lubricant compositions are given in Table 1, and their properties in Table 2.

Table 1

Composition lubricant

Ingredients composition, wt.%

: ii: i

1 0.7

2 1.2

0.5 0.01

Continued table. one

0.01 24

97.46 87.7 78.8

Table

Friction properties in friction of bronze on steel (MN / m, 5 m / s) after 100 hours of operation:

coefficient

training

bronze wear

bearing, mm / km

Durability lubrication

when operating in

selective mode

transfer h

As can be seen from the data of Table 2, the combination of the selected components of the lubricant composition allows to increase the duration of operation of the friction unit in the selective transfer mode by 42-78%, reduce the wear of the bronze bearing by 22.5,32.5%, reduce the coefficient of friction of the pair of friction bronze -steel after long operation 2 times.

The technology of lubrication is as follows.

Epoxy resin is introduced into glycerin heated to 60-8 ° C and the composition is thoroughly homogenized. After the composition is cooled, glycerate of copper sulfate, aluminum chloride, formic acid and hydroquinone are sequentially introduced into it. Before being put into the friction unit, acidic potassium sulphate is introduced into the lubricant composition.

Lubricant is recommended for use in precision friction pairs, to speed up the handling of metal.

0.0085 0.009 0.058 0.054

118

130

and metal-polymer friction pairs and ensuring their stable operation in the selective transfer mode.

Claims (2)

Invention Formula Lubricant composition for glycerin-based friction units, characterized in that, in order to increase the anti-wear properties of the composition under selective transfer conditions, it additionally contains formaldehyde, copper sulfate glycerate, potassium hydrogen sulphate, hydroquinone, aluminum chloride and epoxy resin upon traceability the ratio of components, weight,%: Formaldehyde 1-6 Glycerate sulphate med1-5 Sour sulfate potassium .0,5-2 Hydroquinone 0.01-1.2 58594276 Epoxy resin 0.01-41. Garkunov D.N. and others. Aluminum electorator 0.02–3 transfer in friction nodes m., TranGlycerin Up to 100 Sport, 1969, pp. 29-31. Sources of information, 591494, cl. C 10 M 3/14, 1976 taken into account in the examination (prototype). 2. USSR author's certificate