Magnetic arc blow

One of our Singapore clients gave us feedback about the welding problems when they used the Nelweld 6000 to weld our shear studs. “Your studs are OK, the ceramic ferrules are also OK, and we weld as per Nelweld’s settings, why does this happen?” 

This is called the magnetic arc blow in the welding field. This post will share some ideas for this item.

Ps: Maybe some guys are also interested in the Nelweld 6000’s settings.

Nelweld 6000 Settings

What is the magnetic arc blow?

According to the Wikipedia, magnetic arc blow or “arc wander” is the deflection of welding filler material within an electric arc deposit by a buildup of magnetic force surrounding the weld pool.  Arc blow is the, usually unwanted, deflection of the arc during arc welding. There are two types of arc blow commonly known in the electric welding industry: magnetic and thermal.

In the arc stud welding field, the axis of the arc column deviates from the axis of the stud, this phenomenon is called arc blow.