[TheForge] Teaching blacksmithing and insurance

Tue Dec 9 02:26:00 2003

Mike;
It did work to a degree on shallow indents...it was a big rosebud and I 
assume a boiling interface on the inside allowed it to reach a dull red 
heat, at which point it moved some. When I kept the heat on too long it 
pinholed. Spot annealing and reinflating didn't work on the steel, it 
did on the  thin copper.
 Good St Phlip; The hollow body  was   connected to the water system's 
130 PSI and completely filled, valves open and on top so that the 
pressure didn't  increase with applied heat and the steam recondensed 
immediately. I'd done  the inflating cold this way to begin with. The 
heat was an attempt to pop out reluctant dents. A less than entirely 
successful experiment.

Phlip wrote:

>Ene bichizh ogsen baina shuu...
>
>  
>
>>Nope, won't work, Pete.  With water in it the max temp will be 212
>>    
>>
>degrees,
>  
>
>>or 100C.  Possibly  this would work just fine with air pressure, though I
>>just  feel that  a pressure vessel  filled with air makes a nice
>>bomb.  Might try blowing it up with water, empty and spot anneal with a
>>torch,and then refill it  and pump it up again.
>>    
>>
>
>Huh? Water as a liquid can get up to any temperature you want it to get to,
>as long as pressure's maintained to keep it in its liquid (not gaseous)
>state. Not entirely sure what you guys are trying to do, but if you're
>worried about an air filled container becoming explosive, I'd damn sure be
>ten times as worried about a heated, pressurized water filled container
>finding an unexpected outlet, and rupturing the container- can you say,
>"steam engine, over-heated, with the safety locked down"?
>
>Saint Phlip,
>CoDoLDS
>
>"When in doubt, heat it up and hit it with a hammer."
> Blacksmith's credo.
>
> If it walks like a duck, and quacks like a duck, it is probably not a
>cat.
>
>Never a horse that cain't be rode,
>And never a rider who cain't be throwed....
>
>
>_______________________________________________
>http://mailman.qth.net/mailman/listinfo/theforge
>theforge mail list group photo site is
>http://www.photoaccess.com
>Login:  [email protected]
>password:  anvil
>___________
>
>
>
>  
>