[TheForge] tig welding, 18 gauge 316 stainless steel, chemical fume hood

[Bruce .]

Terry,

A friend of mine has a heavy slip-roll that could probably handle 18
ga SS.  You'd have to ask him to be sure, and I can give you his email
or phone off-line, if you like.

Now, why do you need to TIG weld?  For flue seams?  For hood seams?
Why wouldn't riveting do?

You might want to look into simply purchasing commercial fume hoods.
There are a lot of things out there.

Also remember that in some cases people assume that you need SS or
other expensive materials of construction, when really you don't.  For
example, the "standard" laboratory flammable storage cabinet is
painted steel, and most people assume that a metal cabinet is
required.  In fact, wooden cabinets can work just fine, for the same
reason that wood beams can sometimes be better in a fire than steel
girders.

On Fri, Jun 29, 2012 at 2:44 PM, terry l. ridder <terrylr at blauedonau.com> wrote:
> hello;
>
> while attempting to come up with a reasonable budget for the
> construction of a metallurgical laboratory, to be used for the detailed
> analysis of metal, one of the requirements per numerous environmental
> health and safety rules and regulations is the chemcial fume hood design,
> construction and operation.
>
> design is better standard.
> construction is also better standard, 18 gauge 316 stainless steel, tig
> welded. must be able to withstand a negative operating pressure.
>
> the exhaust fan must be corrosion resistant and explosion resistant.
> the stack for the hood must be a straight shot with the exhaust fan
> mounted as close to the top of the stack as possible.
>
> given the amount of tig welding required i am weighing the cost and
> option of sending someone to training for tig welding and perhaps attend
> myself. in my case it is not so much to be able to weld but to be able
> to have the required knowledge to discuss the construction of the lab
> with the authorities and the various enviromental health and safety
> organizations. i am not particularly thrilled at the idea of outsourcing
> the design and construction of the metalurgical lab chemical fume hood.
> when it comes down to safety, particularly mine, and environmental
> safety, doing it in house at least i have the perception that i know
> what i have got. outsourcing, i am relying on someone i hardily even
> know, to design and construction of an safety item. when they are done
> and gone i do not even have the perception that i know what i have got.
>
> that is the background for my quesions.
>
> 0. just how difficult is it to work with 18 gauge 316 stainless steel?
> need to be able to make bends, roll it, etc.
> 1. knowing that it depends on the individual who would be learning to
>  tig weld, what is a good average length of time for the training?
> 2. would taking a community college course work in tig welding be
> sufficient for what needs to be done?
> 3. what training would members of theforge recommend?
>
> please feel free to provide insights that you may have.
>
> --
> terry l. ridder ><>
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-- 
Bruce
NJ