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Rick,
Absolutely, which is another reason why NOT to
chrome plate anything.
Myles.
----- Original Message -----
Sent: Sunday, November 13, 2005 10:58
PM
Subject: Re: [PSUBS-MAILIST] Stainless
hatch ring
Wouldn't chrome plating, in addition to brittleness, hide
signs of incipient metal fatigue?
Rick
Vancouver
----- Original Message -----
Sent: Friday, November 11, 2005 12:10
PM
Subject: Re: [PSUBS-MAILIST] Stainless
hatch ring
Myles,
What is the mechanism of the embrittlement after chrome plating?
Hydrogen ingress?
I know anodising propagate "kerfwerking" (dont know the english
word), it has to do with a little notch that causes a crack, but that
does corrosion too.
About chrome and cruiser bikes: "it has to shine, it dont have to
work"
Regards emile
Gents,
The chrome plating process makes the
metal more brittle. Brittle in sub = bad. Save the shiny stuff
for other things.
Myles.
----- Original Message -----
Sent: Thursday, November 10, 2005
3:17 PM
Subject: Re: [PSUBS-MAILIST]
Stainless hatch ring
brian how about just plate the ring with
chrome.
rick m
----- Original Message -----
Sent: Thursday, November 10, 2005
12:59 PM
Subject: RE: [PSUBS-MAILIST]
Stainless hatch ring
Brian,
I think you're fine as is. The one
that's really nice to have in stainless is the ring that your hatch
lands on, because in getting in and out you scratch tha paint very
easily there. But that said, all the home built subs I've seen so far
have steel lands due to the cost of a large stainless ring. The "pro"
subs have SS there, we just repaint.
rgds,
Alec
When I put together my domed hatch ( in my machining
class) I first had the hemisphere fabricated and then I had a
2" ring welded to the edge of the
hemisphere. At the time I was not really
clear on how everything was going to come together and now in
hind sight I realize that the 2" ring that I welded on should
have been stainless steel instead of what I used.
My question is, can I fabricate a stainless
ring and connect it to what I have now ? I could
remove some of that material ( the ring part ) which is 3/4"
thick so as to reduce the weight. I'm afraid if I don't make
that ring part thinner the hatch will be too dam heavy.
If I do add this new stainless ring should I just weld it to
the existing ring? and then put it in a giant lathe and
machine it true?
Here is a picture of the hatch cover:
Thanks
Brian
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