The method of accelerated bench test of rope endurance in accordance with GOST 2387-80 "Steel ropes. Endurance test method" with periodic exposure to a corrosive environment was performed. The main goal of accelerated testing is to obtain information about the endurance of the rope during the test time, less than the specified resource of its operation. The study of steel wire ropes according to the proposed method was carried out on a running machine designed and manufactured at the Technological Park "KhTTs UAI-ROSOIL". The machine provides periodic dipping of the deformable section of the rope in a corrosive environment during reciprocating movement and repeated alternating bending of the sample by 90°. For testing, samples of a steel rope with a diameter of 5.6 mm without coating of two types: according to GOST 14954-80 (I type, with a metal core) and GOST 2688-80 (II type, with a core of organic material) were used. The influence of the lubricant in this work was not considered. The cores, strands, and the rope itself were not coated or saturated with lubricant. The endurance of the steel rope was estimated by the number of bends of the sample until it was completely destroyed. The research results showed that the proposed method allows us to simulate the operation of ropes exposed to river, sea water and various corrosive environments on ships, on drilling rigs, in mines, wells, and also to reduce the test time by more than 3 times. In the statistical processing of the results, it was found that the difference between the true values during the tests according to the proposed accelerated method with respect to the standard method does not exceed 7 %, and the relative measurement error is less than with standard tests.

Protecting metal articles from corrosion is pressing in all stages of their manufacture and use. Foci of corrosion that arise during storage and shipment significantly complicate application of galvanic and paint and varnish coatings, worsen the quality, and reduce the lifetime of the articles.To eliminate these defects, mechanical treatment or chemical etching of the surface layer are included in the manufacturing process, and conservation of the articles between operations is used to prevent them. The last method is the simplest and least laborious.However, in this case, too, due to the poor compatibility of the conservation compositions and process media, process media residues must be removed from the surface of the part before they can be applied.Conservation oil (CM) used for sheet protection at metallurgical combines and in automobile plants before sending the stock for stamping is removed with a special detergent.In metalware production, the finished parts (when thermal or galvanic treatment is not planned) are carefully degreased with detergent solutions before going to the conservation oil bath. The effectiveness of the anticorrosion protection is a function of the quality of degreasing and the corrosiveness of the detergent solution to a significant degree.Such a combination of mechanical treatment and conservation of metal parts and stock is typical of most machine-building plants. For this reason, developing conservation-process lubricants (CPL) that allow combining these operations and eliminating the stage of intermediate degreasing is pressing.The CO manufactured in Russia cannot be used in even the simplest metal-working operations where low-efficiency process lubricants (PL) or ordinary industrial oils are used as process media. The mandatory requirements for PL are: simplicity of removal from the surface of the metal, ease of application, and stability during prolonged storage. The currently offered PL and protective materials are usually either highly viscous, which makes it difficult or impossible to feed them into the treatment zone or are not completely removed from the surface of the metal by the detergents used in machine building.

A testing bed was developed and manufactured for drawing rods and strips of various sections in the rolling die. The testing bed allows measuring the friction strength at stopped rolls, the normal force at the standing rolls and the drawing force in the drawing process. The influence of friction force on the parameters of the load and the deformation extent, as well as the deformation amount for the alloy AlMgSi0.5 was established. The influence of multiple deformations on the maximum of deformation to failure and on the drawing stress at different friction conditions was established. It was found that the multiple drawing increased the technological plasticity, but did not affect the drawing stress at the moment of the failure of the AlMgSi0.5 ingots. It was shown that the drawing stress at the moment of the failure of the sample was similar both for the absence and for the presence of sliding friction. Multiple deformation influenced the amount of deformation maximum to failure, but it has no effect on the drawing stress both in the absence and in the presence of sliding friction. The possibility of experimental estimation of the strain increase reserve during drawing by reducing the influence of the friction force was shown. A calculation method for estimating the strain reserve at drawing was proposed and experimentally tested. It was experimentally shown that the difference in the rolling friction force and the sliding friction force depended on the degree of deformation per pass.

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The paper presents the results of a comparative analysis of methods for testing the low-temperature properties of rope lubricants. Studies have shown that the designation of the temperature range for the use of the rope must be carried out taking into account the low-temperature properties of the rope lubricant used in its manufacture, determined in accordance with GOST 20458-89. The use for these purposes of the instructions of GOST 11507-78 or EN 12593 : 2007, which are intended for testing the low-temperature properties of bitumen, can lead to a significant unjustified reduction in the service life of the rope, since the test method according to the European standard provides for static loading of the sample film applied to the steel plate during its bending, and according to the Russian state standard, shock loading of the sample is provided, which, according to the authors, is closer to the real operating conditions. It is shown that the maximum effect of increasing the wear resistance of the rope at low temperatures is given by the lubricants having the best low-temperature properties determined by the standard method, which is confirmed by the complete correlation of the comparative results of testing the low-temperature properties and wear resistance of the rope at low temperatures. The authors have experimentally confirmed that the highest wear resistance of the rope at low temperatures is provided by lubricants, which have the best low-temperature properties, determined in accordance with GOST 20458-89. It has been established that lubricants, which have unsatisfactory lowtemperature properties, significantly reduce the service life of ropes that are operated at low temperatures, in some cases even with respect to an unlubricated rope. The authors suggest that at low temperatures the components of the lubricant crystallize, the resulting crystals play the role of abrasive elements contributing to accelerated abrasive wear of the wire surfaces.