110v arc welding

[jdub198425]

Hi guys, I have a 110volt 90amp arc welder that I have been practicing with. Before I bought this I hadn't welded since high school. I'm just trying to get the hang of it again. I have been beveling my edges and that seems to be working pretty well. I'm looking for any helpful hints. I welded my motor plate on with it and the welds broke this evening. The plate is pretty thin and my frame is thick walled tubing so the weld didnt get good penetration on my frame. I was thinking of cleaning it all up again and grinding a groove in my frame everywhere I need to weld to attempt to get better penetration. What do you guys think about that?

 

[OzFab]

The plate is pretty thin

How thin?

and my frame is thick walled tubing

How thick?

so the weld didnt get good penetration on my frame.

If you're welding at 45* then change it.

If you want to fillet weld two pieces of steel at 90* that are the same you would weld at 45*. If one piece is thicker than the other, concentrate the heat towards the thicker of the two, slow down & work in a small circular pattern; some people prefer zig zag or even V.

I was thinking of cleaning it all up again and grinding a groove in my frame everywhere I need to weld to attempt to get better penetration. What do you guys think about that?

Not so much a groove as a flat spot or shallow V at the most; not too deep or you risk burning through.

Another tip: If possible, weld on both sides of the join

 

[alfredracing]

you need to have it hot enough to penetrate your thicker steel without burning through the thinner stuff. so focus most of you puddle on your thicker metal with quick even whips onto your thinner plate

 

[machinist@large]

Hi guys, I have a 110volt 90amp arc welder that I have been practicing with. Before I bought this I hadn't welded since high school. I'm just trying to get the hang of it again. I have been beveling my edges and that seems to be working pretty well. I'm looking for any helpful hints. I welded my motor plate on with it and the welds broke this evening. The plate is pretty thin and my frame is thick walled tubing so the weld didnt get good penetration on my frame. I was thinking of cleaning it all up again and grinding a groove in my frame everywhere I need to weld to attempt to get better penetration. What do you guys think about that?

How thin?



How thick?



If you're welding at 45* then change it.

If you want to fillet weld two pieces of steel at 90* that are the same you would weld at 45*. If one piece is thicker than the other, concentrate the heat towards the thicker of the two, slow down & work in a small circular pattern; some people prefer zig zag or even V.



Not so much a groove as a flat spot or shallow V at the most; not too deep or you risk burning through.

Another tip: If possible, weld on both sides of the join

you need to have it hot enough to penetrate your thicker steel without burning through the thinner stuff. so focus most of you puddle on your thicker metal with quick even whips onto your thinner plate

Both Fabroman and Alfred are correct; furthermore, we need to know what filler rod you're are using (I.E. 6011, 6013, 7014 [ I'm guessing that your unit is strictly AC]) as well as the dia. of same (different types of welding rod requires different techniques). Another thing too, is what the cross section shape is at your proposed weld site; joint design is very critical to how you go about laying a bead to join both pieces of metal.

I hate to say this, but

Please don't get discouraged; there is help here. We just need more information to be able to start answering your questions!!!

 

[rick 37]

Mate am a welder it's an art so anything you don't want to fall of get a welder to do it . If you can't it helps if steel is clean and rods have been put in the oven to heat them up .you are better using 3.2 rods 6013 welding tube with arc rods if very hard even for me good luck