[TheForge] enough of this nonsense

[CGRAF]

  Going back to your original question.

   One thing that is being ignored us just exactly what is being heated 
primarily.

Heating the area immediately around a hole will cause that area to try 
and expand . It will not be able to expand into the surrounding plate so 
it will upset into the hole.

  Very well and good.

   That exact same thing should happen to the rivet, occupying the hole 
if it is the primary target. It too should upset in the only directions 
available, along the axis of the rivet, and out both ends of the rivet hole.
   When it cools the amount of material remains basically unchanged but 
the shape of the rivet is longer and narrower allowing extraction..


On 8/13/2016 6:20 AM, terry l. ridder wrote:
> hello;
>
> enough of this nonsense.
>
> I am sorry i ever asked the question in the first place.
>
> I am an B.S.E.E. i have taken enough chemistry and physics classes in my
> life. I still have the "Rubber Book" a.k.a. CRC Chemical Handbook. It
> that book are listed the thermal expansion coefficient of thousands of
> metal alloys and pure metals.
>
> The "holes" i am dealing with are currently occupied by snug fitting
> stubborn rivets. the hole cannot become smaller unless miraclously it
> can crush the body of the rivet. at the worst the hole does nothing.
> doing nothing is a valid option.
>
> I will attempt to take photographs of the rivets this morning and post
> them to my web server.
>
>