[TheForge] scrap plate steel

[Schade]

Yes.

Bob
____



On Oct 16, 2004, at 11:59 AM, Bob Smolen wrote:

> Bob,
> Does the clamp go over the ends that meet  and "back" or over the 
> other two
> sides?
> I believe the "other" sides.
> Bob
>
> ----- Original Message -----
> From: "Schade" <schade at acegroup.cc>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>; 
> <artgawk at thegrid.net>
> Sent: Saturday, October 16, 2004 9:38 AM
> Subject: Re: [TheForge] scrap plate steel
>
>
>> You can tighten a loose collar the same way. Put a c clamp or
>> vice grip tight on the collar. Heat to red. As the collar expands it
>> upsets on itself. Quench with a wet rag or whatever. Do over
>> if necessary.
>>
>> Bpb
>> _______
>>
>>
>>
>> On Oct 16, 2004, at 12:26 AM, Peter Fels And Phoebe Palmer wrote:
>>
>>> I think the theory here is that one heats a limited area to dull red
>>> and the surrounding plate prevents it from expanding, so it upsets
>>> then  shrinks flatter  on cooling .
>>>
>>> The Millers wrote:
>>>
>>>> Actually it is kind of counter intuitive. You heat the convex side
>>>> then "chill" it with water causing rapid contraction.
>>>> The rapid contraction performs the "shrinking" effect like a
>>>> shrinking hammer.
>>>>
>>>> You can't do it all at once.
>>>>
>>>> But I watched a guy straighten a 24" buck stay, (I beam used in 
>>>> large
>>>> power plant boilers) that had a 12 " bend!!
>>>>
>>>> Ray
>>>>
>>>>
>>>> The other model to consider is heating couplings to install on 
>>>> shafts
>>>> or shrink fits.
>>>>
>>>> If you heat from the outside in the hole will get smaller. If you
>>>> heat from the inside out it will get bigger.
>>>>
>>>> Ray
>>>> Cincinnati
>>>>
>>>>
>>>> On Friday, October 15, 2004, at 05:02 PM, Gladish Family wrote:
>>>>
>>>>>> In basic terms it was a matter of heating the opposite side and
>>>>>> then cooling with water and shrinking the "dimple".
>>>>>>
>>>>>> Ray
>>>>>> Cincinnati
>>>>>
>>>>> That sounds kind of fun...so, the heat goes in the concave side,
>>>>> right?
>>>>> Then (I'm guessing here) heat until it expands and becomes 
>>>>> straight,
>>>>> and
>>>>> stop it in time...
>>>>> Andy G.
>>>>>
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