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TR2/3/3A welders have a second

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sp53

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Do some of you welders have a second to offer some advice. I am trying weld an 1 ½ pipe out rigger with a homemade stiffener with my mig. Trying to figure out if I should slow the speed of the wire down on the welder with the voltage high---- then start welding at 80% angle or all most vertical on the pipe---- about a ½ inch up on the pipe from the base and let them melt together as I go up and down with the tip/wire in a kind vertical weld.

Or perhaps hold the gun end more horizontal with the frame and try and going in a circle around the base of the pipe over the top of the old weld, basically try and weld it the way they did.

Or better yet a great idea on how to weld it.



steve
 

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If I recall correctly, some standard water pipe (3/4, I think) fits snugly into the hole for the original outrigger pipe and you just tack it at the exposed end.
Bob
 
Normally you will lean the nozzle to point in the direction you are moving with the bead. Not a whole lot, but about 20-25 degrees from perpendicular to your work. If it is perpendicular you have trouble seeing your puddle.

In general, if you increase your amperage, you increase the wire feed rate. If the arc seems to skip on and off, the wire feed is too slow. If you get mounds of spatter and the tip keeps bumping you away, then the feed is too fast.
 
Steve , are you right handed or left handed? divide the pipe into quarters. weld 12:00 to 3:00, move and weld 6:00 to 9:00, move and weld 3:00 to 6:00, move and weld 9:00 to 12:00. tack your pieces before you start welding. Is there a chart on the inside of the door where the wire goes that would help you get in the ball park based on the thickness of the pieces you are trying to weld. what is the model of the welder you are using? Frank
 
Steve I had another thought that might help. Think of the welding nozzle as a caulking gun and the weld is the caulk. The only difference is instead of the caulk following the caulking gun tip the weld puddle is ahead of the welding nozzle. If you are right handed welding gun in your right hand tilted to the right use your left hand to steady the nozzle and weld right to left that way you can see the puddle. I run my gas at roughly 30 CFH, Nozzle is approx 1/2 from the surface you are welding and the wire is 1/16" to 1/8" when starting the weld. as you weld you need to concentrate holding the nozzle the same distance from the work. you will have a tendency to drift away from the work. Take to couple scrap pieces and tack then together at 90 degrees then run a bead in the inside corner ( fillet weld) the weld around the pipe is the same thing only curved. Use this to practice and get you welder set up before you do the real weld on your car. Continue to ask questions the forum will get you on the right track. Frank
 
Hi Steve, Here is a link to an excellent video for describing MIG welding. This should help. His videos are excellent in all aspects of metal fabrication. Frank
 
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