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Filler rod getting maganatized to base metal? Answered

I recently have been going to school and i have a problem and its not just me that it is happening to. I asked the teacher and he don't know what is happening either. We're doing open v grooves on carbon steel. Every time i start the arc my filler rod becomes magnatized to the base plate and makes it harder for me to push the filler rod it into the puddle. If you had any info on it or a website where i could find out what is happening it would help alot. Thanks

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frollard
frollard

11 years ago

Could be magnetic inductance if its pulsed dc...

huge current flowing in one direction makes a magnetic field that collapses and repels the original force...

Or something entirely different.  Really peculiar.

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steveastrouk
steveastrouk

Answer 11 years ago

If he's running DC, its simple magnetisation of the job, caused by the 100 or so amps he'll be running.

Steve

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frollard
frollard

Answer 11 years ago

indeed...simple answer is usually the right one :)

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Re-design
Re-design

11 years ago

Are you sure it's getting magnetized and not just sticking?  Try holding it a tiny bit higher in the puddle and see if that helps.

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steveastrouk
steveastrouk

11 years ago

Presumably you are using a DC set ?
How are your cables set up ?
Never run your cables in loops near your workpiece when you run DC.

Steve