SU937508A1 - Lubricant for impregnating organic cores of steel ropes - Google Patents

Description

(5) LUBRICANTS FOR IMPLEMENTATION OF ORGANIC CORE RANKS

This invention relates to the field of producing lubricants for the impregnation of organic cores of steel cables. Long-term operating experience has shown that the durability of steel ropes is largely determined by the quality of the lubricant used for lubricating them, as well as for sealing organic cores. The lubricant used for impregnating cores should ensure the safety of the core itself without replacing it with the life of the rope, as well as additional protection against corrosion of the wire strands facing the core. Known lubricant E-9 for steel ropes based on polyethyllomex halogen fluid. However, this base is a scarce and expensive product. Therefore, the volume of release of the lubricant is limited. Also known is a grease for impregnating organic cores of steel ropes (E-1) based on petroleum ceresin, copper naphthenate, and petroleum oil — nigrol 2. However, after short use (about six months), the cores lose 20-25%, and in some cases, 50S impregnation from its initial content, which leads to core rotting and loss of strength, as well as corrosion on the inner wires of the rope. This is due to the fact that the impregnation used for cores has a low viscosity of 20-30 cSt and under a little load narrowly squeezed out of the core. In this connection, the anti-rotten and anti-corrosion protection of the core and wires is lost. The wires of the rope are corroded intensively, the core decreases in diameter and ceases to support the strands of the rope. At the points of contact of the MHteHCMBHO strands wire breaks are growing. During the operation of ropes with organic cores impregnated with El, as a result of contact with the environment (especially mine waters, characterized by low pH), water-soluble acids increase, which also leads to intensification of the corrosion process. In addition, the impregnating composition E-1 has insufficient adhesive properties, has a low frost resistance (). The purpose of the invention is to create a lubricant for the impregnation of the organic cores of steel ropes, providing improved low temperature and adhesive properties in the temperature range from +50 to throughout the entire period of rope operation and characterized by increased viscosity. This goal is achieved by the fact that lubricant for impregnation of organic cores of steel ropes, containing petroleum ceresin and petroleum oil, additionally contains a copolymer of ethylene and vinyl acetate, an extract of feiolic purification of petroleum oils and alkyl phenol at the following components, weight: Petroleum ceresin 2 -6 Ethylene copolymer with vinyl acetate 2-6 Phenolic oil purification extract55-65 Alkylphenol 7-12 Petroleum ester Else The formulation uses drop-in oil ceresin with a dropping temperature

Grease formulations

mmmmmm "" "".

Petroleum ceresin

Phenolic Purification Extract

Sample 3

Sample 2 6 C 80-85C, petroleum oil having a kinematic viscosity at cSt, the copolymer used contains 10-20 wt. vinylacetate, plasticizer PN-6 with kinematic viscosity at a temperature of 100 ° C cSt is used as an extract of phenolic oil refining; alkylphenol contains no more than 1 weight D of phenol and has a flash-point not lower. The lubricant manufacturing process consists of dissolving the copolymer in an extract of phenolic oil refining (PN-6) and fusing this solution with the other components. To obtain a solution, a kQQO kg of phenol oil purification extract is loaded into a 5 m reactor, equipped with a heating and stirring device, dehydrated and heated to a temperature of 120 ° C. Then 200 kg of the copolymer are loaded into the reactor and at the temperature of 120-130 ° C they dissolve until a clear, homogeneous solution is obtained which is accumulated in a separate container. The lubricant manufacturing process is carried out in a reactor of the same type with a capacity of 10 m, into which 2too kg of oil and kOQ kg of ceresin oil are loaded, the mixture is heated, dehydrated, and 6100 kg of copolymer solution (sevilen) in the extract of phenol is sequentially loaded into the reactor petroleum oils and 1000 kg of alkylphenol. The contents of the reactor are heated to temperature and, after thorough mixing until homogeneous, are analyzed and drained. I and 2 are prescription lubricant formulations and lubricant testing. Table 1 . Droplet temperature, OS Kinematic to ecology, cSt I Corrosion test plastic board from Art. Grades 5 or 50 according to GOST 1050-60 Thermal stability at 100 ° C for 7 hours: evaporability,% Lack of sedimentation Water content Frost resistance at temperature Does not withstand Adhesion properties (reset in% at a separation factor of 7000)

Determination of the low-temperature properties of lubricants intended for application to wires and strands of steel cables is carried out as follows.

The tests are carried out in parallel on: steel plates (St, 5 mm in size), the edges and side surfaces of which are ground; lengths of strand ropes with a diameter of 7-10 mm and a length of 1 m; rope lengths with a diameter of 21-25 mm and a length of 1 m; rope lengths 21-25 mm in diameter and 1 m long, pre-curved in the shape of a loop (the ends of the rope are tied together with a string).

Preparing for the test.

Plates are washed in a porcelain dish with neutral gasoline and wiped first with absorbent cotton moistened with ethyl alcohol, and then

Table 2 Withstand Not More than 0.2 Traces

dry the rope and the rope and wash it with neutral gasoline and wipe it dry with cotton wool or a cloth.

Washed and wiped plates are immersed for 2 days in a heated lubricant. Grease is applied to the lengths of strand and rope by applying a small brush. The lubricant must be heated to its heating temperature under production conditions (melting point). After applying the lubricant, the samples are held at room temperature for 24 hours.

Conduct testing.

The greased objects are placed in a special refrigerating chamber, in which the temperature gradually, within 2–3 hours, decreases to the set point. When the required temperature is reached, the objects are kept in the chamber in Withstands Withstands Withstands. 0.08 0.12. 0.1 soy. Lack Of absence.

for 5 hours, after which each of them (individually) is quickly removed from the chamber and immediately subjected to the following mechanical effects:

plate - 2-3 blows of a hammer (hammer weight 150-200 g) and peeled off with a knife;

cut length - three times the bend on the template with a ratio of the diameter of the template to the diameter of the length of 80;

rope segment - three times the bend on the template with the ratio of the diameter of the template to the diameter of the rope, equal to 80;

the rope segment, previously curved in the form of a loop, is free to straighten with a blow to the wooden surface (one end of the rope is held in the hands and the twine that pulls the ends is quickly cut with a knife).

In this case, the lubricant is considered to have passed the test at an appropriate temperature, if during the test it does not occur on the flaking plate and peeling grease from the surface of the metal, on the strands and rope sections - cracking and flaking and on the cable segment, previously bent in the form of a loop, flaking and peeling (rare cracks are allowed).

As can be seen from the table. 2, the proposed lubricant with respect to frost-resistant, viscosity and adhesive properties is EXTENDED to the currently used impregnating compound E-1.

Thus, the proposed composition has good antiseptic properties, does not cause hemp yarn to change.

Claims (1)

1. USSR author's certificate No. 286122, cl. C 10 M 5/26, 1971. 2o USSR Author's Certificate No. 238066, cl. C 10 M 7/20, 1969 (prototype).