Problems mig welding heavy equipment

[Bls repair]

Here’s the problem

[Bls repair]

The clean up ,getting it ready to weld

[Bls repair]

The welding and what it is

[MMW]

Not quite sure what you are saying? It broke because it was mig welded? Lack of penetration on the ends? If so I wouldn't blame the process, more the operator or whoever set up the operation. I would have no problem welding this with dual shield or inner shield, new or repair. Even bare wire mig with the right size wire.

Having said that I'm sure you will make it right so it lasts many years.

[Bls repair]

A good looking mig weld does not mean a good weld ,that is what happened here . I see this often on production welds . The factory edges of crack don’t have any sign of weld penetration

[MMW]

Funny, when I replied there was only the top two pics. Now the rest show up. Nice job.

[Electric4Life]

hot and fast is production friendly but doesn't necessarily equate to adequate penetration. Cold lap doesn't have to be visible to be an issue. I love seeing those pretty welds pull clean off the surface of an adjoining part. Keeps the fear in me during my repairs.

[Bls repair]

My posts take between a day and a week or so to post

[walker]

hot and fast is production friendly but doesn't necessarily equate to adequate penetration. Cold lap doesn't have to be visible to be an issue. I love seeing those pretty welds pull clean off the surface of an adjoining part. Keeps the fear in me during my repairs.

Me too, that is why I stick weld all those type of repairs on my stuff!

[pietromarruggio]

my uncle repaired excavator buckets he used basic electrodes or electrodes to weld the high penetration methane pipes, to patch the buckets he used the sheets of the elliptical leaf springs of the trucks that he recycled at truck mechanics or vehicle wreckers deposits of old iron.