this is the first flange ive ever welded... I had some trouble getting enough heat to make it stick to the flange and not burn the tubing. any advise? done on a tig. sorry it's not the best picture.

 

angle torch on flange and get a nice pool then blend the puddle into the tubing.

 

You need to put more heat towards the flange.

 

When you are welding a thick stock like a flange against a thinner gauge tubing the molten pool will want to pull into the thinner stuff because it heats up faster. Direct the arc slightly up onto the flange and let it pool into the thinner stuff. If you have a foot pedal use it lol.

 

the weld seems ok but it took way longer than it should have. I'll try that on the next one. thanks.

 

would it help if he preheated the flange?

 

PUT more heat into all together. Current. Angle. Speed. all play a key role in welding. Low heat LONG time. High heat QUICK work time.

Here is a photo of a stainless project I finished up yesterday. This was welded with around 50 welding amps. material is pretty thin wall and I have been welding everything V bandTHe v band flanges are pretty thick and I had welded my first flange with .30 Stainless MIG wire.

THis was a special FUNNEL part I waited on and finally made my transition the way I wanted to.

 

why didn't you use a chill ring ?

 

Advice man needs advice.

 

Lol, I was thinking something similar except my thought included the word thread jack also. When welding thick material to thin OP, focus the arc on the thick material and as u dip ur rod it should fuse over onto the thin material. It takes some practice and if those are ur first welds then u can't be to dissatisfied with it.


Mike

 

If he had used a chill ring he would have had this done right the first time

 

I know you went to school and everything, but your welds are way hot and way undercut.

 

It looks like you are trying to add too much rod for the amperage you are welding at. The weld doesnt need to be any thicker than the thinnest base material.

 

U gguys made pics so big I feel like im using google maps searching for the street on this smartphone

 

85- I feel when welding flanges, going for a higher amp is better than being too low. Aim the pool towards the flange like everyone else says.
Also don't listen to the guy with the huge pictures, he still needs to work on his welding before he should be giving advice.

EFjoe91- You need to work on consistency and setting your welder right. Most of the welds are cold and don't look great no matter how you polish it. Go for more heat and work on keeping you torch steady.

Gl folks.

 

EFjoe91- Try working on consistency and reading the instructions on your welder. A lot of the welds are cold and don't look so great they way you have been doing it . Try more heat and keep your torch steady. If I can be of any more help let me know. I was a newbie once 2.

 

Both of you are melting filler and then trying to push it into the part with heat.

melt first, filler after. If you dab on top like that and then push it in with heat and the HAZ/inclusions are going to be out of control.

 

probably everyone said this but that's what you need.