Stay Connected

Method provides welders new technique for avoiding arc blow

12/21/2009
By Jose Hiram Espina Hernandez, Francisco Caleyo, Gabriela Lourdes Rueda Morales, Jose Manuel Hallen, Abraham Lopez Montenegro, and Eloy Perez Baruch
A new method allows welders with little background in magnetism to reduce arc blow during DC welding of pipelines.Arc blow most commonly occurs after an in-line magnetic-flux-leakage inspection tool magnetizes a pipe wall during an inspection run. DC arc welding is one of the most popular techniques in the oil and gas industry because of its versatility and relatively low cost. Interaction between the magnetic field associated with the current flowing through the electrode and the residual magnetic field in the pipeline under repair can produce arc blow.This article describes a simple method to reduce arc blow during DC arc welding of pipelines. In contrast to methods so far available in ...
read-story

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.

 

Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.