[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [PSUBS-MAILIST] Coupling Thru Hulls



I went and killed two birds with one cookie yesterday.  I visited with my retired welding friend about the diatom past. He said he would let it dry before welding, and that is didn't take very long to dry. A heat lamp would dry it even faster if you needed.
 
Then regarding the coupling welding issue, I visited with the owner of the SS tank manufacturing company, and he said Do Not screw in a plug tight before welding on a coupler, unless your trying to sabotage yourself. If you want to protect the threads a bit from diggle balls from MIG or stick welding in the couplings, he said to just put a steel plug in a quarter turn. Really loose.
 
He says they TIG or MIG there couplings in with no plugs, and just keep the heat down, and weld fast and very consistent to keep the couplings from distorting. It's a art ya know. They make some pretty welds there.


Regards,
Szybowski



 
From: brenthartwig@hotmail.com
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Coupling Thru Hulls
Date: Sun, 16 Aug 2009 15:18:58 -0700

Hey Glen,
 
Sounds like your deep into the build.  Ya that's what I'm saying. I have not tried it out myself yet. It was a tip I heard from a retired welding buddy of mine. Not sure if you need to let the past dry first of not. I'll have to make a call and find out.
 
KeeP TiGGiN
BrentNI

From: glen brown
Sent: Sunday, August 16, 2009 1:45 PM
Subject: Re: [PSUBS-MAILIST] Coupling Thru Hulls

Hi Brent
Are you saying diatomaceous earth can be used as a shield for Tig welding if so that could be good news to me as I am doing most of my joints now with Tig and have to usually do quite a bit of grinding on the air side ceramic masking tape is impossible to get in my area.
All the best
GlenSA
----- Original Message -----
Sent: Sunday, August 16, 2009 10:31 PM
Subject: Re: [PSUBS-MAILIST] Coupling Thru Hulls

That large SS tank is for some sort of cutting slurry storage for a large drilling operation of some kind. We are waiting for the thru hull specs from them so I can finish the CAD work on it, to have them final proof the tank design.  It would make a very nice hyperbaric chamber though.
 
He's not into ROV's currently, he's really into photography, so perhaps I can suck him into it that way. ;}  (Insert evil laugh here)  He's been thinking of designs for a pontoon boat that carries a car and/or truck for some time now, so it looks like we might be working together on my floating sub trailer, that once the sub is off loaded can then carry the tow vehicle.  How crazy it that. We both suffer from what we call hyper brain syndrome, so it should all work out or sink to the bottom of lake Pend Oreille.
 
I used to use diatomaceous earth for filter polishing aquarium water. That's why I still had some to try out.  If it's a lubricant for drilling, then perhaps it's perfect for are application. I knew some one would have more data.  Don't for get it can be made into a past with water and used in place of backing gas shielding a weld zone.
 
B
 
 

Sent: Sunday, August 16, 2009 8:56 AM
Subject: Re: [PSUBS-MAILIST] Coupling Thru Hulls

Hi Brent. Good to have a friend like that. Is that a storage tank or a hyperbaric chamber?
Interesting that he builds his own robots. Does he have any interest in ROV's ?
Sounds like a good guy to know. Frank D.
Oh ya, Thanks for the thread-o-let links.
The moly grease is good stuff, and I've heard about using the diatomaceous earth. It's useful for a lot of things. I remember hearing it's good to eat too. (yuck) It's used in well drilling too, as a lubricant for the drill head and also to suspend rock chips and expand in the hole to hold back the sides when the drill head is pulled up and pipe casing is inserted. Pretty useful stuff. Frank D. 



No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.392 / Virus Database: 270.13.57/2303 - Release Date: 08/14/09 18:10:00