Equipment. Technologies. Materials

ADVANCED TECHNOLOGIES IN STEEL PRODUCTION

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Published: Tuesday, 18 April 2023 18:52

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Volume 14 (2), April 2023, Pages 47-52

Elshan Jafarov¹, Lala Aliyeva²

¹Chief mechanic, “Turan Drilling & Engineering”. Department of Materials Science and Processing Technologies, Faculty of Petroleum Mechanics, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Training master, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, Azerbaijan.

 ABSTRACT                                                                                           

Continuous casting is essentially the youngest and most dynamically developing technology in the steel production and casting system as an industrial method of shaped casting process. At present, continuous casting of steel is adopted in more than 90 countries of the world. About 2,000 continuous casting machines (CCMs) of different purposes and designs are now in good operation, which allow casting about 93% of all steel produced in the world. At this time, steel bars with the following maximum cross-sections are produced in the industry: blue 600×670mm, slab 250×3200mm and circular bars with a diameter of 600mm. In many developed countries of the world, almost 95-100% of steel production is produced by continuous casting. is being for example, in 2018, 1.228 billion tons of steel were produced by continuous casting in the world, which is a record in the history of metal production. as a result of experimental studies, proposals were developed for the application of important technologies in the development of non-furnace processing of liquid metal and continuous casting in the Republic.

Keywords: Steel making, permanent casting devices, construction, vacuuming, liquid metal, intermediate heat, temperature, impact viscosity, electrometallurgy.

MATHEMATICAL EQUATIONS FOR TEMPERATURE CONTROL IN THE CONTACT SURFACES OF DRILLING AND MAINTENANCE EQUIPMENT

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Published: Tuesday, 18 April 2023 18:48

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Volume 14 (2), April 2023, Pages 29-38

Amir Mustafayev¹, Chingiz Nasirov²

¹Associate Professor, Department of Mechanics, Azerbaijan State Oil and Industry University, Azerbaijan. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Master, Department of Transportation and Storage of Oil and Gas, Azerbaijan State Oil and Industry University, Azerbaijan. Email: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

 The maintenance of equipment and tools used in the workover of oil and gas wells depends on keeping them in working condition, reliability, strength and temperature endurance of the tool.

In order to restore wells in case of an accident and bring them back into operation, it is necessary to speed up the drilling and repair work by choosing the right repair equipment and following the existing rules and regulatory documents.

The cutting elements of the tools working under high pressure and loads are deformed, a tense situation is created in the cutting – destruction zone, high temperatures (1000⁰ - 1200⁰) occur as a result of corrosion in the triboknots.

The stress-deformation state in the cutting-destruction zone causes the formation of microcracks in the working area of the tool. Microcracks grow after a certain period of time. Cutting elements are quickly worn, in some cases broken and fail quickly. Such cases affect the structural composition of the cutting elements, the temperatures increase, as a result, riveting occurs.

In order to keep the equipment and tools used in the repair in normal working condition, adjusting the mode parameters is one of the important requirements, in addition to taking special care of them. The high results obtained in repair and restoration works depend on the efficiency of the cutting-destructive tool, longevity, material selection, construction manufacturing technologies, tool that meet modern requirements, dimensions, weight and internal condition of the well being restored.

It is necessary to keep the heat generated in the moving parts of the tool at the required level for the safe performance of restoration works.

The thermal regime of cutting and rock-destroying tools depends on the physical-mechanical properties of the objects subjected to destruction and the effect of thermomechanical stresses generated on the contact surfaces of the tool and the amount of heat released from the working surface.

Studying the problems related to heat issues will allow to ensure the temperature tolerance of not only the repair equipment, but also the equipment and tools used in other areas of the oil-field industry.

Keywords: temperature, cutting and destructive tool, metal, rock.

METHODS OF FIGHTING WITH MILITARY EMERGENCIES

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Published: Tuesday, 18 April 2023 18:50

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Volume 14 (2), April 2023, Pages 39-46

Ulvi Sadik-zada

Head teacher, department of Sports, Physical and Emergency Training, Academy of the Ministry of Emergency Situations, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ABSTRACT

 The article provides a new classification of emergency situations of a military nature. Quantıtatıve and qualıtatıve indicators of military emergencies were studied. Safety criteria in dealing with emergency situations have been defined. Information has been provided on emergency rescue and other urgent tasks during the prevention and elimination of the consequences of emergency situations of a military nature. During the fight against emergency situations of a military nature, a single system was studied, and the main goals and tasks for emergency rescue operations were determined. The importance of the classification of emergency situations according to the incident during the accident-rescue and search-rescue works was studied and the directions of action were determined. The significance of emergency planning and the classification of cases during the use of modern means of destruction, i.e., weapons of mass destruction and conventional means of destruction, in the case of military emergency events and other urgent work arrangements in peacetime have been studied. The necessity of developing a preventive policy for combating emergency situations of a military nature was determined, the issues of developing universal principles of conducting operations against emergency situations of a military nature, and systematizing the procedure of coverage of war-related situations in the mass media were considered. In real conditions, the importance of differentiating emergency-rescue work from other urgent work has been determined.

Keywords: emergencies, military, rescue, security, character.

AVOID DAMAGE TO LOADER CRANE COMPONENTS A STUDY OF CONCENTRATION

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Published: Tuesday, 18 April 2023 18:44

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Volume 14 (2), April 2023, Pages 20-28

Rafiq Arabov¹, Fariz Gafarov²,  Mahluqa Rahimova³,  Irada Karimova⁴, Hamidli Anvar⁵

¹Assistent professor of “Mechanical” department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail: This email address is being protected from spambots. You need JavaScript enabled to view it. 

²Assistent professor of “Mechanical”  department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

³Assistent professor of  “Mechanical”  department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail:  This email address is being protected from spambots. You need JavaScript enabled to view it. 

⁴Assistent professor of   “Mechanical” department, Azerbaijan State Oil and Industry University, Azerbaijan. E.mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.  https://orcid.org/0000-0002-8488-9104

https://orcid.org/ 0000-0001-6308-0704 

⁵Magistr, “Mechanical”  department, Azerbaijan State Oil and Industry University, Azerbaijan.

ABSTRACT

 Crane parts work with non-stationary variable loads. The hypothesis of linear summation of fatigue damage during non-stationary cyclic tests is not confirmed. Under the influence of alternating stresses, a process of gradual accumulation of damage occurs, which leads to the formation of cracks of various nature, which gradually increase, forming macroscopic values.

The work is devoted to the study of stress concentratıons leading to damage to crane parts. The results of the research revealed that the set of possible methods for non-stationary modes is not considered valid and was not fully justified from a physical point of view. From a physical point of view, the direction of the ongoing processes is determined by the method of lowering the curtain. However, this method itself requires further development and accuracy. The application of the Dahlgren method is a manner that inaccurately describes the process and its application is incorrect. When choosing materials that work for fatigue in non-stationary modes, along with other characteristics, it is necessary to take into account the criterion of sensitivity to loads.

Keywords: step loading, hypothesis, damage, secondary fatigue curves, experiment.