CZ7034U1 - Lubrication mixture - Google Patents

Description

The technical solution relates to a lubricating mixture based on mineral oils, suitable especially for lubrication of metal ropes during their production and for use in transport equipment and static structures. The lubricant mixture is also suitable for lubrication in the production of wire rope wires.

BACKGROUND OF THE INVENTION The prior art lubricating compositions used in the manufacture and operation of metal ropes are mainly based on plastic mineral oils. However, their ability to protect ropes against material fatigue, wear and corrosion during use is usually only short-lived.

During the production of ropes, the forming tools or guiding elements of the abseil, pulling and rewinding equipment wear and at the same time considerable consumption of driving energy. Other significant disadvantages are seen in the operation and handling of ropes. The ropes are rigid, with considerable friction between wires, with excessive wear and fatigue stress on the wires, the wire surface has not been protected against corrosion in an aggressive environment for long enough, thus significantly reducing their service life and the need to replace them with new ropes, costly and uneconomically. In addition, poorly lubricated and subsequently corroded rope causes accelerated wear of pulley blocks, drums and friction discs.

The essence of the technical solution

The above mentioned disadvantages are reduced to a minimum lubricating compositions according to the invention whose principle consists in that it comprises 80 ¹ to 99% by weight of the plastic lubricant based on mineral oil and 1-20% by weight of additive of complex grease based on high * alkali kalciumsulfonátů class penetration 1.5.

Such a lubricated compound guarantees favorable effects already during the cold wire production of metal wires, in rappelling of metal ropes, but mainly in operational use of ropes due to high adhesion, penetration, compressive strength, water resistance, sliding, antioxidant and anticorrosive properties lubricating mixtures according to the technical solution.

The advantages of the lubrication mixture are already evident when the rope is made, where the wear of the wires is reduced by the guide elements of the abseiling, pulling and rewinding device, while at the same time reducing the power consumption for abseiling, drawing and rewinding the rope.

In the operational use of the rope, due to the reduced friction between the wires in the rope, the longitudinal and transversal plasticity of the rope is increased and thus the fatigue stress of the wires in the rope is reduced, wear of the wires in the rope is reduced. as well as the adjacent threads of the rope. Furthermore, the rope is pulled out more quickly and thus the contact pressures between the individual wires in the rope are even and reduced,

-1347034 Ul to reduce smear and grease splashes, ie to increase its use while increasing cleanliness and to improve the corrosion resistance of the rope.

Other beneficial effects in the use of ropes are also manifested on the associated devices, in particular by reducing wear on the pulley blocks, drums and friction discs, by reducing the rope's resistance to bending on the pulley blocks, drums and friction discs, and thus by reducing energy consumption.

The main and main advantage, which is based on the mentioned advantages, is an increase in the service life of the ropes in the range of 35 - 65%, depending on the range of use of the complex lubricant additive and the operating conditions of the operated rope. The friction coefficient on the friction disc is practically maintained.

Examples

Since the mineral oil-based grease for lubricating ropes is too viscous at normal temperatures, it is easiest to mix the additive of a highly alkaline calcium sulfonate based grease with a penetration class of 1.5 in a given ratio with the grease after heating in accordance with technical conditions of the manufacturer. Also, the application of the lubricating composition to the wire according to the invention is in this case carried out by heat so as to apply only a thin layer of the lubricating composition by means of conventional technical means.

With respect to the sequence of operations, the application of the lubricant mixture can already be carried out during the production of the wires, i.e. before or after cold rolling and wire drawing, and in certain cases phosphating and plating operations can be omitted due to excellent lubricant and anticorrosion properties. .

When making the rope, it is sufficient to apply the lubricant mixture to the wires before abseiling and it is not necessary to saturate the rope insert. Ί

When relubricating ropes already in use, it is best to apply a lubricant mixture diluted with common solvents.

All types of ropes can be lubricated with a lubricant mixture.

Mineral oil based lubricants, trade names Elaskon 20 and Nyrosten N 113, have been used in practice.

The additive consisted of a complex alkaline calcium sulphonate grease with a penetration class of 1.5.

Example 1

Elaskon 20 ....................................... 95% by weight additive complex lubricant 5% by weight total 100

-2GB 7034 Ul

Example 2

Elaskon 20 ....................................... 90% by weight additive complex lubricant 10% by weight total 100%

Example 3

Nyrosten N 113 ................................. 95% by weight additive grease 5% by weight total 100%

The percentage by weight of the complex lubricant additive in the lubricating mixture is selected according to the purpose of the rope application.

For example, on a steel wire rope sample manufactured using 95% Elaskon 20 - a rope grease for drum machines - and 5% by weight of the complex grease additive and loaded to 18.7% of the rated load capacity, the tests increased the fatigue life by almost 45% rope sample lubricated only by Elaskon.

In the tests of a steel rope sample lubricated with 95% Nyrosten N 113 - friction disc rope grease - and 5% complex grease additive and a rope sample lubricated with a mixture of 90% Nyrosten N 113 and 10% complex grease additive it was found that the friction coefficient on friction the rubber-based lining did not decrease against the rope lubricated with Nyrosten alone.

Claims (1)

Lubricating composition for producing metal ropes and wires for these ropes, comprising plastic mineral lubricants, characterized in that it consists of 80 to 99 wt. % of a grease based on mineral oils and 1 to 20 wt. % additive of a complex lubricant based on highly alkaline calcium sulphonates with a penetration class of 1.5.