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Old 11-26-2014, 07:55 AM   #1
KillerBMotorsport
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Default Textbook Weld Pentration Picture

This is an old picture I just rediscovered and it just make my dorky engineering mind happy. You have to have a serious amount of commitment to the craft of welding to attain this level of skill on a daily basis. Penetration is complete, clean, and smooth (not built up) to the touch. I feel very fortunate to have these kinds of resources under our roof.

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Old 11-26-2014, 10:33 PM   #2
25rsti
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Purging involved, right?
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Old 11-27-2014, 01:43 AM   #3
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Thumbs up!


Sent from the twilight zone.
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Old 11-27-2014, 03:23 AM   #4
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d000000000000d should be weldin up nuclear reactors an **** like that


marvelous welding, that
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Old 11-28-2014, 05:43 AM   #5
norexyet
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Originally Posted by 25rsti View Post
Purging involved, right?
Most definitely. With no back purge that area would be grey with a bunch off slag sitting proud in the tube. Makes me miss not welding stainless tubing nearly as much as I used to.

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Old 11-28-2014, 12:35 PM   #6
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Also notice how BOTH sides of the metal were cleaned and not just one. Weld prep is a major deal.even though you cannot see the outside its definately prepped if we went through the trouble cleaning the inside.

Looks awesome and consistent
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Old 12-02-2014, 01:36 AM   #7
mordecai86
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Originally Posted by omiotek View Post
Also notice how BOTH sides of the metal were cleaned and not just one. Weld prep is a major deal.even though you cannot see the outside its definately prepped if we went through the trouble cleaning the inside.
You dont know how many people skip this step..... blows my mind.
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Old 12-02-2014, 02:38 AM   #8
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Yep or the bosses that don't care about it...... Prep is always the most important. If you fail there you fail everywhere else
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Old 12-03-2014, 01:18 PM   #9
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So what are/would be the best prep practice?
Grind/sand both sides
back purge
also use a solar flux like product?
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Old 12-03-2014, 03:25 PM   #10
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We use various grinders and sanders for prepping materials and we are picky about cross contamination. Every material type has it's own sanger/grinder.

All surfaces should be cleaned prepped according to the type of weld called out. This particular (.065 wall tube) weld has a bevel on the outside surfaces. Stainless tube should ALWAYS be back purged. No Solar Flux.
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Old 12-15-2014, 01:50 PM   #11
SoloWRXSTi
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Very good pic.

I also use acetone to wipe the filler rod and weld areas right before welding. It's amazing to see how dirty a "clean" tube is before a good wipe.
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Old 04-08-2020, 06:53 AM   #12
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nasioc killed the link so re-adding...

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Old 04-19-2020, 11:41 PM   #13
speedyHAM
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That is definitely a beauty of a weld.

You don't like Solar Flux? Back purging is always better, but sometimes a little Solar Flux makes the weld possible where back purging well is near impossible.
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Old 04-20-2020, 08:27 AM   #14
KillerBMotorsport
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Quote:
Originally Posted by speedyHAM View Post
That is definitely a beauty of a weld.

You don't like Solar Flux? Back purging is always better, but sometimes a little Solar Flux makes the weld possible where back purging well is near impossible.
I wish I could take credit for it. I'm just the guy that designs the stuff. We are really fortunate to have an extremely talented and driven group of welders. These guys are constantly trying to improve themselves at their craft and challenge themselves.

I agree. I see where Solar Flux may be a benefit; where back-purging isn't practical. It just doesn't provide as consistent and clean a weld as good technique with back-purging.

Due to the flakey nature I'd never use it on a pre-turbo exhaust part I couldn't get eyes on to clean/grind as that's just asking for trouble.
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Old 04-21-2020, 11:41 PM   #15
speedyHAM
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Quote:
Originally Posted by KillerBMotorsport View Post
I wish I could take credit for it. I'm just the guy that designs the stuff. We are really fortunate to have an extremely talented and driven group of welders. These guys are constantly trying to improve themselves at their craft and challenge themselves.

I agree. I see where Solar Flux may be a benefit; where back-purging isn't practical. It just doesn't provide as consistent and clean a weld as good technique with back-purging.

Due to the flakey nature I'd never use it on a pre-turbo exhaust part I couldn't get eyes on to clean/grind as that's just asking for trouble.
Understood. In the exhaust manifold (or earlier) I can understand not having any possible chips that can break free and damage the turbo. I'd only use solarflux on post turbo or structure pieces that need to be SS for various reasons.
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