[SEL] babbitt grades

[JIM KIRKES]

Heating and reheating does not hurt a bit.  The problem 
comes when it gets too hot and lots of dross forms, most of 
this is tin and the combination of heat and skimming can 
over time alter the alloy.  At one time we greatly reduced 
this from happening by using soldering oil in wave soldering 
machines.  Works pretty good and solves the problem but gets 
another one.  Over time some of the oil will char and 
eventually begin to deposit on the circuit board being 
soldered.  The only way to fix this is to drain the pot and 
scrape it clean.  Soldering oil also requires a solvent 
cleaning process which has so many environmental problems 
almost nobody does it now. By the way I am talking about 
soldering printed circuit boards.  Solder is not a whole lot 
different that babbit so I think the comparison applies.


Jim and Diane Kirkes
Hemet, California U.S.A.
replace nomore with net to send mail
jd.kirkes at verizon.nomore
----- Original Message ----- 
From: "David Rotigel" <rotigel at alltel.net>
To: "The SEL email discussion list" 
<sel at lists.stationary-engine.com>
Sent: Wednesday, January 09, 2008 2:36 PM
Subject: Re: [SEL] babbitt grades


Hi Ray, HOW THE HELL do pour babbitt without "reheating" 
heating it?
(It was heated at least once in order to make the ingots 
that you
buy.) Use what the hell you want--but don't heat it, for "it 
loses
some of its chemical or alloy make up."
  Dave
PS, See: http://www.oldengine.org/members/rotigel/Im_Stupid/
Im_stupid.jpg for your free sign!

On Jan 9, 2008, at 9:04 AM, Ray And Erica Freeman wrote:

> Unlike you to speak with out being informed on the subject 
> David.
> When white
> metal is remelted it loses some of its chemical or alloy 
> make up.
> If you
> have the technology it can be analysed and the short falls 
> can be
> added to
> make it good again. For us un ejumicated engine blokes its 
> easier
> just to
> use some new stuff.
> Kindest Regards
> Ray Freeman
> Perth WA
>
>
> Boy Paul I sure agree with you on this. That old crap only 
> lasted for
> 80-100 years. The new stuff is a LOT better!
> Dave

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