Oil will smoke and break down before it boils.
The smoke point of peanut oil is 232=B0C and the flash point is 315.5=B0C.
That is too hot for reflow anyway.
I think this person is confused with oil bath soldering, which is a complet=
ely different process.

Cheers,
Robert

----------------------------------------
> From: alan.b.pearce@stfc.ac.uk
> To: piclist@mit.edu
> Subject: RE: [EE] Do you solder using an inert gas ?
> Date: Sun, 22 Mar 2015 12:16:43 +0000
>
>> Denny,
>> I will disagree strongly with your first statement. Vapor Phase reflow i=
s far
>> from inert. It was used from the seventies to the late eighties, and was=
 using
>> boiling oil (peanuts oil) to create the vapor that melted the solder pas=
te. Was
>> very hard to control properly,and prone to fires, so not inert at all..
>>
>> Your last statement is correct. It was abandoned as soon as reflow ovens
>> using first infra-red, and later convection IR were developed from mid
>> eighties on.
>
> It has definitely not been abandoned, and using peanut oil ???? what the =
heck is the boiling point of that ???
>
> It is highly successful if the correct liquid is used, which has a boilin=
g point at the liquidus temperature of the solder, and it is a specialised =
liquid for the purpose.
>
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