Stands for testing the strength of welded pipe materials under the action of a corrosive medium
Journal Title: Вісник Житомирського державного технологічного університету. Серія: Технічні науки - Year 2017, Vol 80, Issue 2
Abstract
In order to study the features of the destruction of materials of pipelines for the transportation of oil, gas, products of processing of oil, water and other substances in the laboratory of the department of development of minerals named by prof. Bakka N.T. the complex of installations is invented, for which Ukrainian patents were obtained as utility models No. 30794, No. 52493, for the study of the working capacity of the elements of the listed pipeline systems in conditions that are as close as possible to the operational under the influence of the corrosive medium. Rotary vacuum devices were used as the basic elements of the proposed installations for testing the materials of the welded tubes for durability at single tensile and under flat stress conditions. The article presents the design of research stands for testing the durability of pipe materials and welds of pipelines using samples of materials and natural pipes (shortened) under the influence of static, low cyclic and dynamic loads, and analyzes the influence of aggressive media.
Authors and Affiliations
M. A. Kolodyi, H. V Skyba
Experimental research of the manoeuvrability of a three-tier modular trailer road train in the «car-towing–Dolly-axle truck with fixed axles (dolly)–three-axle semi-trailer»
The paper offers the method of experimental research of movement of the modular three-trailer road train, consisting of three axis of the tractor vehicle, two-axle tow trucks with fixed axles (dolly) and three-axle semi-...
Use of time indices while evaluating enterprises’ economic security
The article substantiates that the main stage while evaluating both the separate constituent and the entire economic security of the enterprise is to evaluate the time, which makes the enterprise lag behind with ensuring...
Modification of steel 35 HL surge current during crystallization
The method of electro steel melt modification 35 HL variable polarity current pulses with a duration of more 10-3s frequency within the 5–33 Hz, 5–24 porosity meanders, strength 30–40 A at a voltage of 180–240 V during c...
Feasibility study of choosing the diameter of borehole charges for drilling and blasting operations in quarries
It has been established that the issue of choosing the effective diameter of the downhole charge of an explosive for the destruction of rock formation in quarries has not been fully investigated. Existing methods for cal...
Multivariate statistical modeling in the study of processes in the technical processing of metals
The dependences of the wear resistance of the cutting tool on the machining regimes in the SDS are established. Multifactor mathematical modeling was used to study the complex process of metal machining taking into accou...