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Welding current magnetic field regulation at high-speed one-sided welding of the pipes for gas and oil pipelines

Authors: Shchetinin, S. V.; Nikitenko, P. V.; Khaled, Elsaed;

Welding current magnetic field regulation at high-speed one-sided welding of the pipes for gas and oil pipelines

Abstract

One-sided high-speed pipe welding for gas and oil pipelines is an energy and material saving process, the use of which is restricted by the magnetic blow and the violation of the external and internal welds formation. Therefore, the development of the one-sided high-speed pipe welding for gas and oil pipelines process, which ensures the magnetic blow prevention, stability, improving the welded joints quality and toughness, is an important scientific and technical problem. According to the magnetism quantum theory, any system with the help of radiation or another method always comes to the lowest or principal state, with an eigen value of energy equal to E0. It has been established that the magnetic blow is the result of the minimum energy law, according to which the arc deviates to the side of a lower magnetic field until the break, as a result of which the process stability and the welds formation quality are violated. When welding pipes for gas and oil pipelines, the magnetic blow increases significantly due to of the magnetic field lines concentration in the ferromagnetic pipe with high magnetic permeability, which results in increased magnetic blow and the violation of both the process stability and the welds formation. To prevent the magnetic blow, welding pipes with two-sided current supply and regulating the welding current magnetic field process by passing current in front and behind the arc has been developed, which ensures the arc equilibrium, reducing the magnetic field energy to zero, stability and improving of the welded joints quality. Оne-sided high-speed welding pipes for gas and oil pipelines method with two-sided current supply and the welding current magnetic field regulation by transmitting current behind and in front of the arc in a ratio I1/I2 = 1,7-1,9, that ensures the magnetic blow prevention, arc balance, process stability, fine-grained microstructure, the welded joints quality and impact strength improving has been developed

Встановлені закономірності регулювання магнітного поля при односторонньому високошвидкісному зварюванні труб. Розроблено спосіб одностороннього високошвидкісного зварювання труб для газо- і нафтопровідних магістралей з двостороннім струмовідводом і регулюванням магнітного поля зварювального струму шляхом пропущення струму попереду і позаду дуги у співвідношенні I1/I2 = 1,7-1,9, що запобігає магнітне дуття, забезпечує рівновагу дуги, стабільність процесу, підвищення якості та ударної в’язкості зварних з’єднань

Установлены закономерности регулирования магнитного поля при односторонней высокоскоростной сварке труб. Разработан способ односторонней высокоскоростной сварки труб для газо- и нефтепроводных магистралей с двусторонним токоотводом и регулированием магнитного поля сварочного тока путем пропускания тока впереди и сзади дуги в соотношении I1/I2 = 1,7-1,9, что предотвращает магнитное дутье, обеспечивает равновесие дуги, стабильность процесса, повышения качества и ударной вязкости сварных соединений

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Keywords

magnetic blow; electromagnetic force; welding current magnetic field regulation; fine-grained microstructure; welded joints impact strength; one-sided high-speed pipe welding for gas and oil pipelines, магнитное дутье; электромагнитная сила; регулирование магнитного поля сварочного тока; измельчение микроструктуры; ударная вязкость сварных соединений; односторонняя высокоскоростная сварка труб для газо- и нефтепроводных магистралей, магнітне дуття; електромагнітна сила; регулювання магнітного поля зварювального струму; здрібнення мікроструктури; ударна в’язкість зварних з’єднань; одностороннє високошвидкісне зварювання труб для газо- і нафтопровідних магістралей

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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