Method provides welders new technique for avoiding arc blow

Jose Hiram Espina Hernandez; Francisco Caleyo; Gabriela Lourdes Rueda Morales; Jose Manuel Hallen; Abraham Lopez Montenegro; Eloy Perez Baruch

Method provides welders new technique for avoiding arc blow

Jose Hiram Espina Hernandez, Francisco Caleyo, Gabriela Lourdes Rueda Morales, Jose Manuel Hallen, Abraham Lopez Montenegro, Eloy Perez Baruch

Research output: Contribution to specialist publication › Article

1 Scopus citations

Abstract

A new method has been formulated that allows welders with little background in magnetism to reduce arc blow during DC welding of pipelines. Technicians took several measurements of the residual magnetic field of pipelines in southern Mexico. A Magnet-Physik FH-51 Gaussmeter took magnetic flux density measurements of 8, 10, and 30-in. OD pipelines. FEMM helped develop an axisymmetric model of the pipeline with a coil of n-turns. FEMM is a freeware program for electrostatic and magnetic finite-element simulations in two dimensions. The simulation process used 16-m pipe sections with a groove consistent with dimensions dictated by API-1104. The first step of the welding process is to adjust the current through the electrode to obtain the optimum arc length. The operator will always know in advance the range of current to be used for a specific welding task according to the electrode selection.

Original language	English
Pages	54-59
Number of pages	6
Volume	107
No	47
Specialist publication	Oil and Gas Journal
State	Published - 2009

Cite this

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title = "Method provides welders new technique for avoiding arc blow",

abstract = "A new method has been formulated that allows welders with little background in magnetism to reduce arc blow during DC welding of pipelines. Technicians took several measurements of the residual magnetic field of pipelines in southern Mexico. A Magnet-Physik FH-51 Gaussmeter took magnetic flux density measurements of 8, 10, and 30-in. OD pipelines. FEMM helped develop an axisymmetric model of the pipeline with a coil of n-turns. FEMM is a freeware program for electrostatic and magnetic finite-element simulations in two dimensions. The simulation process used 16-m pipe sections with a groove consistent with dimensions dictated by API-1104. The first step of the welding process is to adjust the current through the electrode to obtain the optimum arc length. The operator will always know in advance the range of current to be used for a specific welding task according to the electrode selection.",

author = "Hernandez, {Jose Hiram Espina} and Francisco Caleyo and Morales, {Gabriela Lourdes Rueda} and Hallen, {Jose Manuel} and Montenegro, {Abraham Lopez} and Baruch, {Eloy Perez}",

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AU - Hernandez, Jose Hiram Espina

AU - Caleyo, Francisco

AU - Morales, Gabriela Lourdes Rueda

AU - Hallen, Jose Manuel

AU - Montenegro, Abraham Lopez

AU - Baruch, Eloy Perez

PY - 2009

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N2 - A new method has been formulated that allows welders with little background in magnetism to reduce arc blow during DC welding of pipelines. Technicians took several measurements of the residual magnetic field of pipelines in southern Mexico. A Magnet-Physik FH-51 Gaussmeter took magnetic flux density measurements of 8, 10, and 30-in. OD pipelines. FEMM helped develop an axisymmetric model of the pipeline with a coil of n-turns. FEMM is a freeware program for electrostatic and magnetic finite-element simulations in two dimensions. The simulation process used 16-m pipe sections with a groove consistent with dimensions dictated by API-1104. The first step of the welding process is to adjust the current through the electrode to obtain the optimum arc length. The operator will always know in advance the range of current to be used for a specific welding task according to the electrode selection.

AB - A new method has been formulated that allows welders with little background in magnetism to reduce arc blow during DC welding of pipelines. Technicians took several measurements of the residual magnetic field of pipelines in southern Mexico. A Magnet-Physik FH-51 Gaussmeter took magnetic flux density measurements of 8, 10, and 30-in. OD pipelines. FEMM helped develop an axisymmetric model of the pipeline with a coil of n-turns. FEMM is a freeware program for electrostatic and magnetic finite-element simulations in two dimensions. The simulation process used 16-m pipe sections with a groove consistent with dimensions dictated by API-1104. The first step of the welding process is to adjust the current through the electrode to obtain the optimum arc length. The operator will always know in advance the range of current to be used for a specific welding task according to the electrode selection.

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Method provides welders new technique for avoiding arc blow

Abstract

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