Hi Carsten
This is what I was hoping to hear. That was what I was thinking it would do but I wanted to hear it from someone else. I was mostly concerned about the bilge area having a small hole. But even then the decay would be really slow. Also if one seals everything with epoxy paint or the like as most do that would further seal any holes. Also one might do the weldments when the weather is hot and dry or at lease a warm dry shop. You could apply high zinc weldable primer to all the interior surfaces but any area that gets welded would loose the primer. As we know if any painted area is even scratched down to the bare metal, rust will start to pop the paint off as it grows. In addition I figured I might have to drill some holes in the High H-beam style for wiring, tubing and the like and if I did, I would make the holes large enough to slip a stainless steel tube through then seal everything back up with stainless steal MIG wire. Or better yet win the lottery and build your whole sub out of stainless steal. ;)'
That is one of the reasons I like the rolled I-beam design I see on the Euronaut with some added horizontal supports for good measure. It looks allot easier then the T-beam style with all the cutting and welding around corners. I would expect it takes a fair amount of skill to roll large I-beams and get them not to helix on you. Did you have any trouble with yours Carsten? Also what size of I-beam did you use and what type of steal?
For weldments on the outside of the submarine such as is being talked about with adding a curved plate to re enforce the conning tower or overlapping metal else where, I would worry more about getting it all sealed. Or is overlapping steal on the outside of a sub a bad idea all together?
As you can tell I've been watching your progresse on your sub. I'll have to come and use your diver lockout chamber as a Hyperbaric Chamber and enjoy the extra O2.
Thanks
Brent Hartwig
From: MerlinSub@t-online.de
Reply-To: personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org>
Subject: Re: [PSUBS-MAILIST] Pressure Hull Support Ring Types
Date: 08 Jan 2007 15:53 GMT
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>Hi Brent, if you weld the H frame on both side of the flank to the hull with a small weld there will be no problem. The oxygen between the two surfaces between the weld will be eaten by a very small amount of rust and than the corrosion stop complete because of the lack of oxygen.
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>best regards Carsten
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