[TheForge] shrink fit techniques

Fri Feb 1 11:37:42 2002

Bob, sounds good.  How does one find drill bits that are , for  example,
.001 smaller than the hole?  Also,  are heating the collar and hammering it
onto the cold shaft?  Or, are you heating both pieces to the same temp.?
RW
----- Original Message -----
From: Bob Bergman <[email protected]>
To: <[email protected]>
Sent: Friday, February 01, 2002 11:15 AM
Subject: Re: [TheForge] shrink fit techniques


> I use .001" per inch diameter for a shrink fit. Make your hole smaller
> than the pin by this amount. You don't have to quench ,the metal will
> contract and hold. For a 1" pin use a hole .999.I have used this on
> bigger items like saw collars shrunk on a shaft. Bob
> ----- Original Message -----
> From: "RW" <[email protected]>
> To: <[email protected]>
> Sent: Friday, February 01, 2002 9:14 AM
> Subject: [TheForge] shrink fit techniques
>
>
> > I'm having varying degrees of success attaching metal parts together
> by the
> > use of drilled holes filled with metal dowels using heat and a quench
> as the
> > "adhesive".  If I heat 1 1/2" solid and insert a cold 1/4 or 3/8"
> dowel and
> > quench, the result is a tight secure joint.  But when I insert this
> piece
> > (cold) into another  "hot hole" and quench, the second joint is not as
> tight
> > as the first joint .  I really like this approach for many
> applications and
> > would like to perfect the "shrink fit technique".  Any knowledge and
> > experience with this technique is most welcome and appreciated.
> > RW
> >
> > _______________________________________________
> > http://mailman.qth.net/mailman/listinfo/theforge
> > theforge mail list group photo site is
> > http://www.photoaccess.com
> > Login:  [email protected]
> > password:  anvil
> > ___________
> >
> >
> >
>
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  [email protected]
> password:  anvil
> ___________
>
>
>