Ignoramus18965 wrote:
On 2012-04-26, wrote:
On Wed, 25 Apr 2012 22:03:10 -0400, "Existential Angst"
wrote:

"Ignoramus18965" wrote in message
...
I have a "beavertail double drop deck semi trailer":

http://igor.chudov.com/tmp/Trailking/

that needs some work done on its very tail end:

http://igor.chudov.com/tmp/Trailking...-0010.jpg.html

Some of it would involve "Overhead" welding, operating from below the
weld.

What is the easiest way to do it correctly. These would be welds that
need to hold up when a forklift or a metal tracked vehicle drives over
that tail.

We have solid mig wire and E71T flux cored.
Proly should post to sejw.
Don't know what the spatter situation is like for mig stuff, but if it's
anything like stick, get leather headgear -- not too much is worse than
slag in the ear.... except for mebbe slag in the eye. Slag in yer socks is
no joke either.
And a welding jacket,

Overhead welding, at least for stick, requires a lot of practice.
Particularly on a scabby old trailer.
Flip the sucker, or at least stand it on it's side, and sandblast the
repair area. My preference would be to stick weld it, but that's just
me.

Yeah, just flip that 16,000 lbs sucker ...

You can do it REAL easy. Two chains attached to the tail of your tractor
and back to the trailer. Two more under the trailer in similar positions
to keep it from sliding. Add two more to stop it when it gets on edge.

Or if you have time two air/hyd. 20 ton jacks. Jack up, block in place.
Block jack up and keep going 'til it's at a good angle.

Call a wrecker outfit and have them lift it up. Block it in position.
Blast and stick weld it then have them come back and drop it down.

--
Steve W.