Arc blow, Mechanical Engineering

ARC BLOW


In certain cases depending upon where the return path connections are given for the arc current, the arc may be deflected towards a direction of weaker electro magnetic field. This phenomenon will become a nuisance with high current DC arc. The arc will be deflected away from the weld zone if proper earth connections are not given. Some guide lines are useful to avoid this problem.

1) Give return connection on the ends of the weld, not in corner of plates.
2) Start welding from the return cable connections.
3) It is better to have both the ends of welding connected to return cable for long welds.
4) For fillet welds if it is possible connect the return cable to both the corner of the fillet.
5) For circumferential seam weld connect both the pipes to the return terminal to reduce arc below.

Posted Date: 9/14/2012 1:17:02 AM | Location : United States







Related Discussions:- Arc blow, Assignment Help, Ask Question on Arc blow, Get Answer, Expert's Help, Arc blow Discussions

Write discussion on Arc blow
Your posts are moderated
Related Questions
Illustrate with working, construction and measurement of brake power by Belt transmission type brake dynamometers? The essential features of a transmission dynamometer are show

Ask question #Minimum 1. Research the topic of heat loss in a cylindrical pipe. Explain which laws of physics are used to discuss heat loss in a pipe, and briefly explain how the f

how to design and fabricate wilson hartnell governor?


A helical compression spring prepared of oil tempered carbon steel is subjected to a load which lies between 400N to 1000N. The spring index is 6 and the design factor of safety is



Q. Corrosion - Erosion Allowance? The required design life shall be based on written agreement between the user and the Engineering Contractor. Allowance specified shall be ba

Design varies with scale of operation The design of a fermenter varies with scale of operation from lab (1-20L), to pilot (up to 5000L) to production (to >200,000L) scales. Th

Following data is provided for a 360 o hydrodynamic bearing : Radial load = 3.2 kN journal Speed =1490 rpm journal diameter = 50 mm bearing length = 50 mm radial cl