The what I welded today (/whenever) thread (pics please) - Page 92

raticus · Sun Jan 15, 2017 5:43 pm

LtBadd wrote:
raticus wrote:
and if only I could get the camera to focus on this corner weld of very thin 26gauge SS... managed some fusion fillets too but filler fillets just wasn't happenin'
What dia filler did you try? That thin material can be done with .030" but you have to be tight and quick

i probably just used our own homemade filler at work... we just take a sheet of SS and feed it through the shear in automatic mode, trying to move it only a 1/16th of an inch at a time, to make filler rods. I probably used something smaller than I could even handle to try that fillet on the 26gauge... I can never feed the small filler quick enough, I definitely don't have the skills. Whatever I used, it would just blow through... i'd have it for about a half inch and then daylight...

BigD · Sun Jan 15, 2017 8:36 pm

A friend of mine found a turbine housing that is perfect for his needs but had a weird v-band. He had an adapter with the right v-band and he needed the extra length anyway, so I mated them up for him. I did the spark test and it made dense long yellow sparks, which seems to confirm what I read that Garrett housings are cast steel. I welded both sides just in case, hope it serves him well.

: turbine_housing.jpg (76.53 KiB) Viewed 1936 times

exnailpounder · Sun Jan 15, 2017 9:04 pm

NIce work!

exnailpounder · Sun Jan 15, 2017 9:09 pm

Damn RickH...nice work...I got a shitpile more of that 347 rod when you need it. I been using it and other than feeling like my welds will outlast me...compared to 309.... it's no big deal...but now I really look like I know what I'm doing.

malmac · Tue Jan 17, 2017 5:11 am

I had a long range tank fitted to my ute. Problem is the under tray water tank left inadequate room for the filler pipe to bend neatly where it needed to go.

Tacked up this prototype to see if I can get the bends right. Struggled to hold the pieces together to tack them and then ended up with too much filler and not enough penetration. Kemppi welder - 100 amps - 1.6mm aluminium tube 34mm diameter - 1.6mm filler rod.

Mal

LtBadd · Tue Jan 17, 2017 9:26 pm

malmac wrote:
Tacked up this prototype to see if I can get the bends right. Struggled to hold the pieces together to tack them and then ended up with too much filler and not enough penetration. Kemppi welder - 100 amps - 1.6mm aluminium tube 34mm diameter - 1.6mm filler rod.

Mal

Still, I think you did well...

Farmwelding · Tue Jan 17, 2017 9:38 pm

LtBadd wrote:
malmac wrote:
Tacked up this prototype to see if I can get the bends right. Struggled to hold the pieces together to tack them and then ended up with too much filler and not enough penetration. Kemppi welder - 100 amps - 1.6mm aluminium tube 34mm diameter - 1.6mm filler rod.

Mal
Still, I think you did well...

And for tack welds I mean it held right. That's all it had to do.

Ryan_82 · Wed Jan 18, 2017 8:28 pm

GreinTime wrote:
Ryan_82 wrote:Not bad BigD. We were going to to get some titanium donated to the school by a local business but we still don't have a 300 amp torch and we were concerned about ventilation. So:

How many amps did you use?
Did you feel sick afterwards breathing it in?
Why would you need a 300a torch? Most people welding titanium are doing sheet metal parts for weight/strength ratio and can be welded at 20-75a.

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The company makes gigantic saddles out of titanium. It's thick. It's a molten reservoir.

GreinTime · Wed Jan 18, 2017 8:30 pm

You can fusion tack aluminum if your fit up is mint, but it's not the easiest thing in the world and takes some patience and torch manipulation to get it right.

Also on the subject of pie cuts, Justin @thefabricator has a great video on doing the math to make your cuts so that they end up being a radius that you can replicate out of mandrel bent tubing if you desired.

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GreinTime · Wed Jan 18, 2017 8:32 pm

Ryan_82 wrote:
GreinTime wrote:
Ryan_82 wrote:Not bad BigD. We were going to to get some titanium donated to the school by a local business but we still don't have a 300 amp torch and we were concerned about ventilation. So:

How many amps did you use?
Did you feel sick afterwards breathing it in?
Why would you need a 300a torch? Most people welding titanium are doing sheet metal parts for weight/strength ratio and can be welded at 20-75a.

Sent from my VS995 using Tapatalk
The company makes gigantic saddles out of titanium. It's thick. It's a molten reservoir.

Oh. That changes the dynamic quite a bit then. You could always cut it into thinner sections on a band saw to make it last longer rather than have one giant chunk.

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Ryan_82 · Wed Jan 18, 2017 8:41 pm

Oh. That changes the dynamic quite a bit then. You could always cut it into thinner sections on a band saw to make it last longer rather than have one giant chunk.

The idea was for them to donate the material in order to train students specifically to repair cracks for them. That's about all they use welders for there, but it pays well. It's all thick titanium repair, with 300 amp tig torches. I don't think I'd have much problem with it, but I haven't had the chance to try it yet, hence my initial questions.

I also heard that a few of there welders got real sick because of the material, even though they had respirators.

LtBadd · Wed Jan 18, 2017 8:57 pm

Ryan_82 wrote: The idea was for them to donate the material in order to train students specifically to repair cracks for them. That's about all they use welders for there, but it pays well. It's all thick titanium repair, with 300 amp tig torches. I don't think I'd have much problem with it, but I haven't had the chance to try it yet, hence my initial questions.

I also heard that a few of there welders got real sick because of the material, even though they had respirators.

I've welded quite a bit of Ti and never had any issues, nor the other welders in the shop.

GreinTime · Wed Jan 18, 2017 11:28 pm

LtBadd wrote:
Ryan_82 wrote: The idea was for them to donate the material in order to train students specifically to repair cracks for them. That's about all they use welders for there, but it pays well. It's all thick titanium repair, with 300 amp tig torches. I don't think I'd have much problem with it, but I haven't had the chance to try it yet, hence my initial questions.

I also heard that a few of there welders got real sick because of the material, even though they had respirators.
I've welded quite a bit of Ti and never had any issues, nor the other welders in the shop.

I guess I've never really seen anything other than 6al4v and CP, so I can't really say anything to what effect the other alloys may have when breathing in.

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Rick_H · Mon Jan 23, 2017 1:36 pm

4" 316L sanitary

motox · Mon Jan 23, 2017 1:50 pm

rick
did you get to weld that on the bench or at same impossible
angle? nice!
craig

Rick_H · Mon Jan 23, 2017 3:43 pm

motox wrote:rick
did you get to weld that on the bench or at same impossible
angle? nice!
craig

Sitting on my pipe stands, so 5G

LtBadd · Mon Jan 23, 2017 7:49 pm

Very nice Rick, but coming from you, well I'd say par for the course

GreinTime · Mon Jan 23, 2017 7:54 pm

@rick_h I think he's calling you ugly

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mpete53 · Tue Jan 24, 2017 4:11 pm

first time back purge

Finally got set up to do back purging. The results amazed me. Even though it looks like I need more flow on the purging the sugaring disappeared. The joint welded easer, flowed better and much cooler. I have a hard time getting any color but grey on my stainless welds so the color on this weld is great for me. I think since it flowed better I used less amperage but, using the peddle I can't really tell.
1 7/8 stainless tube with .045 wall
# 6 gas lens
.040 2% lanthanated
2 sfh torch
5cfh back purge
60 amp max with peddle

mpete53 · Tue Jan 24, 2017 4:15 pm

Correction on fist time back purge

torch had 20 cfh

I better proof read more

Mark

exnailpounder · Tue Jan 24, 2017 4:39 pm

That's good color! If you have pulse try it, it really makes a difference but takes a little getting used to. The faster you pulse the easier it is to get used to...at least thats been my experience. If you want to try something weird...try welding at 10 pps and see if you like it

mpete53 · Tue Jan 24, 2017 5:06 pm

Just started tig last year with an entry level DC machine Everlast 160 STH. Nothing fancy Post flow, Lift and HF start. I have added a peddle and a CK torch.

Mark

exnailpounder · Tue Jan 24, 2017 5:10 pm

mpete53 wrote:Just started tig last year with an entry level DC machine Everlast 160 STH. Nothing fancy Post flow, Lift and HF start. I have added a peddle and a CK torch.

Mark

Gotcha.

LtBadd · Tue Jan 24, 2017 8:32 pm

mpete53 wrote:Correction on fist time back purge

torch had 20 cfh

I better proof read more

Mark

Mark
Can you explain how you setup the purge? What did you use for a damn, etc...

mpete53 · Tue Jan 24, 2017 9:00 pm

second flow meter off regulator with pipe fittings
second flow meter from Ebay
silicon vacuum hose from Ebay
bronze pneumatic mufflers off ebay
blue painters tape and a good fit up on the joint to seal tube ends and around purge hose with a slit in uppermost taped end. The hose was just stuck into the longer tube and taped closed. The argon hose has the bronze muffler on it to smooth the argon flow. Note there is a drilled hole in the longer tube that lets the argon flow out of it and fill the shorter tube where it vents out the slit in the tape on top

I thought that the tape would get to hot but that's what I had so I decided to give it a try. To my surprise the whole pipe stayed much cooler then when I hadn't purged and the tape held fine. No scorching, just the glue seemed to be less sticky when I took it off

Mark