Increasing the reliability of oil and gas equipment working in the conditions of steep temperature gradients

Selection of Priority Production Technology Based on Comparative Evaluation of the Oil and Gas Equipment Working Resource

“…(5) as shown in paper [6], or analytically using relations Eqs. ( 6), (7) with experimental data obtained by ESPI method [16]…”

“…and pipelines [1][2][3]. The priority direction is the development of theoretical approaches that allow us to predict the working resource of oil and gas equipment and pipelines manufactured at the factory or on assembly site [4][5][6][7][8][9][10]. These approaches should be based on a technical survey data in the most stressed and damaged areas during equipment manufacturing.…”

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“…Vibration loading during welding. Technologies using vibration loading during welding have attracted greater attention over the recent years [23][24][25][26][27][28][29][30].…”

“…In recently published work [23], the influence of vibration during welding on cold resistance of welded joints 10 mm thick from low-alloyed steel 09G2S was studied. Two-sided submerged-arc welding was performed, and vibration loading was applied by a schematic, given in Figure 2, at the frequency of 50, 100, 150 and 200 Hz with 0.8-1.0 mm amplitude.…”

“…Schematic of vibration application during welding: 1 -weld; 2 -item being welded; 3 -electrode; 4 -vibration device; 5 -vibration synchronizer; 6 -vibration energy source[23] Residual stresses of the 3 rd kind versus frequency of concomitant vibration impact[23] INDUSTRIAL of vibration, provides lower anisotropy of properties of structural components (individual crystals) and, consequently, smaller RS.…”