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Old 08-03-2020, 12:00 PM
Phoenix365 Phoenix365 is offline
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Default Aluminum oxide deposits?

So, I'm probably over thinking this as I do a lot of things, however, the other day I ran across an article that talked about possible weld contamination from abrasive discs.

Up until I read this I would never have thought about it.

I am only a hobbyist welder, but I have a great desire to learn and do things as well as I can.

If I were cutting steel tubing with an abrasive chop saw, would contamination from the disc be an issue anyone would actually worry about if you were say butt welding those cuts?

This is the article here: https://joiningtech.com/jtforms/heat_treating-2/

Let me know what you think.
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  #2  
Old 08-03-2020, 12:35 PM
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LKeithR LKeithR is offline
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Quote:
Originally Posted by Phoenix365 View Post
...If I were cutting steel tubing with an abrasive chop saw, would contamination from the disc be an issue anyone would actually worry about if you were say butt welding those cuts?
No issues at all. Millions of pieces of steel have been cut with abrasive chop saws and successfully welded after the fact. Generally, with steel the only contamination you have to worry about is heavy rust or a thick coat of paint.

With stainless steel and aluminum the only thing you have to be careful of is to not cross-contaminate a chunk of material by grinding or sanding it with a disc or grinding wheel that was previously used on steel. In those cases you can get some transfer of metal from the disc to whatever you're grinding but even then it rarely causes a problem with a weld...
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  #3  
Old 08-03-2020, 01:11 PM
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milomilo milomilo is offline
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Welcome to the site. Set aside a stainless steel hand brush to only be used on aluminum to clean the aluminum 1/2" each side of the weld joint.
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Old 08-03-2020, 01:40 PM
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digger doug digger doug is offline
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Quote:
Originally Posted by Phoenix365 View Post
So, I'm probably over thinking this as I do a lot of things, however, the other day I ran across an article that talked about possible weld contamination from abrasive discs.

Up until I read this I would never have thought about it.

I am only a hobbyist welder, but I have a great desire to learn and do things as well as I can.

If I were cutting steel tubing with an abrasive chop saw, would contamination from the disc be an issue anyone would actually worry about if you were say butt welding those cuts?

This is the article here: https://shit eating spammer.com/

Let me know what you think.
What doo I think ?
I think your nothing but a spammer.

If you are real, the article you linked to deals with a very rare welding process, nothing your going to be doing at home.
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  #5  
Old 08-03-2020, 06:01 PM
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LKeithR LKeithR is offline
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...I think your nothing but a spammer...
Oh dear! ...............Damn Canadians...
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  #6  
Old 08-04-2020, 10:52 AM
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dubby dubby is offline
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Quote:
Originally Posted by digger doug View Post
What doo I think ?
I think your nothing but a spammer.

If you are real, the article you linked to deals with a very rare welding process, nothing your going to be doing at home.

The jury needs more information to make a decision, but it's always possible. I'm giving it the benefit of the doubt for now. Hopefully the OP will reply back and keep this thread going with some real facts, and maybe a good ol' Canadian, "Eh, sorry...didn't mean to sound like a spammer"

We're happy to help if contamination really worries you. I didn't really see anything for sale on the link that deals with ways to avoid it...
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Old 08-04-2020, 12:58 PM
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Quote:
Originally Posted by digger doug View Post
I think your nothing but a spammer.
Quote:
Originally Posted by dubby View Post
I'm giving it the benefit of the doubt for now.
Maybe OP came across an article that got him/her to thinking about weld contamination?

A little OT but Gods bless Rod's soul who had a "knack" for separating the wheat from the chaff. Doug and I would be "no soup for you" for prospective members. There SHOULD be some kind of "test" to get a membership here--a "real person" qualifying set of questions not unlike what you find on FB groups. Just a thought...
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  #8  
Old 08-04-2020, 01:55 PM
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midmosandblasting midmosandblasting is offline
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If you wash it off ,just don't use brake cleaner products . Off gassing is not good for health .
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  #9  
Old 08-04-2020, 09:39 PM
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dubby dubby is offline
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Originally Posted by mccutter View Post
A little OT but Gods bless Rod's soul who had a "knack" for separating the wheat from the chaff. Doug and I would be "no soup for you" for prospective members. There SHOULD be some kind of "test" to get a membership here--a "real person" qualifying set of questions not unlike what you find on FB groups. Just a thought...

He had a routine for sure, and I've picked up on A LOT of the crap he tried to tell me that just sorta flew right by. There are some oddities/spammers/bots that come through every day and light up my emails, they're easy to spot. There are a couple internet-sleuth checks that happen as well. At some point you just have to pick a button, Accept or Deny. I get most of 'em

Then there's the ones that pass all the sniff tests and go back and edit their information to one of the suspected assholes, they really piss me off.

Somebody trying to sell something is easy. Let 'em post their link and hope for a few clicks, maybe make a few pennies for a referreal. What I've learned since January is that there is a class of folks, mostly Chinese, who are really interested in YOUR intellectual property and work. They want to capitalize on your solution to a problem, and crawl this place hoping to find something to make and sell cheap. Y'all are a creative bunch of folks with many good ideas. We can't protect against them all, but that's who I most actively am hunting on a daily basis.
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  #10  
Old 08-05-2020, 12:45 PM
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The POINT is simple.

The linked document deals with "Electron Beam Welding".
Something no one here does.

It's done in a vacuum chamber, and uses no flux nor filler.

Stick welding, flux core welding, or even solid wire MIG (or TIG)
would float out those impurities and deposit them in the slag.

Which is what happens all the time with us that weld.

and the OP has not returned to further explain.
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