STUDY OF HIGH CHROME WHITE SHEEP DEPENDENCE ON CARBONE QUANTITY AND ABRAZIVE CONDITIONS

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Published: Monday, 27 September 2021 18:12
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Volume 8 (4), September 2021, Pages 72-77

1Aghali Quliyev, 2Zaka Salimov

1,2Assistant professor,  Azerbaijan State Oil and Industry University, Candidate of Technical Sciences,  Azerbaijan. 

ABSTRACT

In addition to studying the properties of abrasive corrosion-resistant alloys, the article considers it important to study the abrasive corrosion-based effect of abrasive corrosion resistance of high-chromium white cast iron on the amount of carbon and the dependence of abrasive particles on carbide and particle dependence.

At the same time, the spread of white cast iron with 1.5 - 30% Mo is higher, which makes it easier to spread the processed martensite cast iron.

Keywords: oil drilling equipment high chromium alloy, abrasive particle, diffusion resistance, hardness, erosion coefficient, abrasive conditions.

RISK MANAGEMENT IN MAQISTRAL GAS AND OIL PIPELINE SYSTEMS WITH POTENTIAL COST CONSTRAINTS

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Published: Monday, 27 September 2021 18:08
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Volume 8 (4), September 2021, Pages 59-71

1Oleq Dyshin, 2Ibrahim Habibov, 3Camaladdin Aslanov, 4Sevda Aghammadova

1Senior Researcher, Research Institute "Geotechnological Problems of Oil, Gas and Chemistry", Azerbaijan.

2Professor, “Engineer and Computer Graphics”, Azerbaijan State Oil and Industry University, Doctor of technicalsciences, Azerbaijan.E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.. https://orcid.org/0000-0003-3393-7812

3,4Dosent, Azerbaijan State Oil and Industry University, Candidateof technicalsciences, Azerbaijan.

ABSTRACT

The problem of managing technical and technological risks in main gas and oil pipeline systems, subject to the possibility of limited funds allocated for the prevention and elimination of the consequences of accidents, is considered in the form of a semi-Markov decision-making model for a controlled Markov process in continuous time with the criterion of the maximum average discounted income. To find the optimal nonrandomized Markov stationary strategy, a procedure is proposed based on reducing the formulated fuzzy problem to an equivalent Boolean programming problem with deterministic constraints. To solve the resulting system of inequality constraints, an algorithm has been developed for finding basic solutions for an arbitrary number of accidents and measures to eliminate them.

The numerical implementation of the proposed approach is implemented for the real problem of risk management in the main gas pipeline with unclear cost constraints.

Keywords: semi-Markov decision-making process, Markov stationary strategy, feasibility optimization, basic solutions to inequalities.

SOMEONE FIRST IN THE WORLD OF LOGIC-LOGISTICS

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Published: Monday, 27 September 2021 18:04
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Volume 8 (4), September 2021, Pages 53-58

Zakir Rustamov

Professor, Azerbaijan State Marine Academy, Doctor of technical sciences,  Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

In the article, in contrast to those who consider only one of the two historical figures with identical functions and attribute the first mention of "Logistic" to the 9th-10th centuries. AD [1], the author, studying all the facts, claims that the formation of another personality (mantig-vizier), confirmed by historical documents, is more ancient and belongs to the 17-16 centuries. BC NS. [2]. Thus, based on the event, which is described in the holy books of the scriptures Torah, the Bible and the Koran and dated 1864-1754. "Interpretation of the Pharaoh's dream", and in the literary aspect, a more common work like "Yusuf and Zuleikha" [3], the author in the economic and technical aspect proves that the founder of the above identical functions - frugality, the art of calculation and logical thinking, is "Pharaoh - Prophet Yusuf"

Keywords: logistic, logic, talent, security, reliable, guaranteed, stocking (purchase), distributes.

IMPROVED VALVE DESIGN SUSTAINABILITY RESEARCH

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Published: Monday, 27 September 2021 17:58
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Volume 8 (4), September 2021, Pages 41-45

1Jamaladdin Aslanov,   2Niyaz Zeynalov

1The head of the department, “Industrial machines” department, Azerbaijan State Oil and Industry University, doctor of technical sciences, Azerbaijan. E-mail:  This email address is being protected from spambots. You need JavaScript enabled to view it.

2Assistant, “Industrial machines” department, Azerbaijan State Oil and Industry University, dissertant, Azerbaijan.  E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

The issues of tightness and abrasion resistance of the new design of the ZMS-type valve are considered. An analytical expression was obtained to determine the relative pressure generated across the check valve of the improved valve. Checked the condition of the valve tightness and abrasion resistance. The new valve design was tested at JSCO “NEFTGAZMASH”, and as a result of the tests it was found that the new valve fully complies with these conditions.

Keywords: leakage, relative pressure, seal, improved, ZMS, abrasion resistance.

RESULTS OF RESEARCH ON THE USE OF MAGNETIC FLUIDS IN THE PROCESS OF OIL REFINING FROM TAR SANDS

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Published: Monday, 27 September 2021 18:02
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Volume 8 (4), September 2021, Pages 46-52

Tarana Sadigova

Assistant, Department of  “Industrial Machines”,  Azerbaijan State Oil and Industry University,  Azerbaijan.

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Despite extensive theoretical research, scientific-practical and various engineering works in the field of separation of residual oil in bituminous sands, the problem remains relevant.

For this purpose, the article considers the issue of improving the process of separation of oil from bituminous sands under the influence of physical fields.

Keywords: Bituminous sands, ferromagnetic based fluids, magnetic and electric fields, oil yield factor.

ELASTOPLASTIC PROBLEM FOR PERFORATED PLATE IN TRANSVERSE SHEAR

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Published: Monday, 27 September 2021 17:56
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Volume 8 (4), September 2021, Pages 29-40

1Rafail Mehdiyev, 2Alekber Mehdiyev, 3Rustam Mammadov

1Associate Professor, Department of “Materials Technology”, Azerbaijan Technical University, Candidate of Physical and Mathematical Sciences (Azerbaijan).

2Associate Professor, Department of “Mathematics”, Azerbaijan State Oil and Industry University, Candidate of Physical and Mathematical Sciences (Azerbaijan).

3PhD in metallurgy, Azerbaijan Technical University, Azerbaijan.

E-mail: 1This email address is being protected from spambots. You need JavaScript enabled to view it.; 2This email address is being protected from spambots. You need JavaScript enabled to view it.; 3This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

A solution is given to the problem of transverse shear of a thin plate clamped along the edges of the holes and weakened by a doubly periodic system of rectilinear through cracks with plastic end zones collinear to the abscissa and ordinate axes of unequal length. General representations of solutions are constructed that describe the class of problems with a doubly periodic stress distribution outside circular holes and rectilinear cracks with end zones of plastic deformations. Satisfying the boundary conditions, the solution of the problem of the theory of shear plates is reduced to two infinite systems of algebraic equations and two singular integral equations. Then each singular integral equation is reduced to a finite system of linear algebraic equations.

Keywords: perforated thin plate, straight cracks with end zones, transverse bending, plastic deformation zones.

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