double sided

[Iain Westland]

Ok, you have a big thick piece of metal to join to another big thick piece of metal. You run a seem down one side everything on max. But its a bit big for full penetration.

Do you pass the job to somebody else, or flip the joint over and repeat the process down the back side?

Had a guy come in on friday with two 2'x4" 6mm(ish) strips he'd bent into large U's, about 100mm radius and at the end he wanted me to weld a U shaped bar made from about 15mm steel to each of the sheet steel (one side not between the sides)

The bracket is for when mooring on the Lancaster canal as they have changed the system (didnt pay very much attention as he is easily excitable about narrow boats and I had work to do) I ran a 75mm bead down both sides of the bar on both sides of the strip.

so is this as I hope over kill, a futile effort as it will be less than twice as strong as a single weld per side or have I weakened the original weld by under pinning it?

the welder was a 160EN on 0.8mm and argoshield light.

I dont think that theres a problem here, risk assessment to my mind is minimal so this is more about future reference ... course when I get the new portamig it will be less of a 'concern'

Iain

 

[Hitch]

If you're not sure, weld it all round. I doubt you have weakened it. Got a pic of it?

 

[Iain Westland]

Id like to blame the camera phone but yes my welding was that bad

&

and its not just the big stuff I struggle on

 

[Welderpaul]

Welds look ok from here!

 

[Iain Westland]

thanks Paul, Im self taught and only get to see welds from some of the other local guys - and there not very good at all - so not too sure where I stand in this stuff.

not novice, but far to go - thursdays child

Iain

 

[scott0031]

Looks good to me too. Looks like the welds are right in there and that's what matters.


Kind regards,


Scott

 

[Iain Westland]

Clarke 160EN full power 0.8mm wire speed about 7 argoshield light, the round flat is 30mm thick to give an indication of size.

 

[Tino]

Weld looks ok but to get that size of weld with 0.8 wire you may have found it easier to multi run it. If the weave is getting a bit ponderous the weld can start to cool to much at the side you have moved away from, so the side wall fusion isn't as good. Still I'm sure that is more than up to the job you describe. Just a thought, as you say for future reference.

 

[Iain Westland]

please go on, think It would be a while till I get to play at this size again. as I say my training consists of point the nozzle and squeeze plus what ever gems I can glean from here so any pointers are gratefully received.

I went about as slow as I could and kept the 'bacon sizzling' I also turned the gas up a bit. Obviously the Clarke struggled, but It did its best and I am quite impressed with it all things considered.

Hopefully the funds will have provided a portamig by the time this size comes around again

Iain

 

[weldingscotty803]

why turn the gas up?????????? should have it on between 10 and 15 lpm
only time you should turn it up is when your outside and its blowing a bit

 

[Iain Westland]

The Clarke's quite a small nozzle and as I was working at the limits of this thing I thought a bit more gas wouldn't go amiss. Don't know if it would make a difference but why not.

Iain