[TheForge] Aluminum

[Bruce .]

http://www.millerwelds.com/resources/articles/plasma-cutter-oxyfuel/

See Table 1.

For future reference, you can put aluminum over a fire to heat the whole
piece.  When a pine stick will dray a black "crayon" mark on it, it's ready
for forging.  If the crayon mark burns off (largely disappears) as it
forms, you can probably knock the aluminum apart with a hammer -- it's
beyond forging temperature.  That trick is used for remelting aluminum
blocks, etc., that are too large for the crucible.


On Thu, Oct 3, 2013 at 2:53 AM, Vincent Nakovics <restoreman123 at msn.com>wrote:

> Hi Guys,
>    Terry asked about Magnesium which I know nothing, but reminded me of
> something I did, well truthfully could not do with four large Aluminum
> signs several years ago. There were these aluminum signs brought to my shop
> to be cut into four pieces. The signs were cast, I guess, with raised
> letters and picture framing all around. They were about 7 ft long and 4 or
> 5 ft wide and about 3 inches thick on the edges for about 4 inches and the
> backing of the letters was about an inch or so thick. I I didn't think
> anything of it and tried to cut them with my torch. The  cutting torch was
>  good for 1" of steel. I couldn't barely get those signs hot enough to
> discolor them. I checked the tank about ten times, increased my Acetylene
> to 14lbs and Oxygen to 35 ( I think that's what I had on it). Nothing,
> Nada, Zip, Zilch!
>    I was just wondering if any of you had ever experienced that?  The
> signs were loaded on a dump truck which we were trying to avoid bringing
> down to the recycling yard, that's why they brought them to me in the first
> place.
>
> Vince Nakovics
>
> Blacksmithing: The mind's eye brought to life in a hard reality.
>
>
>
> ______________________________________________________________
> TheForge mailing list
> Home: http://mailman.qth.net/mailman/listinfo/theforge
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:TheForge at mailman.qth.net
>
> TheForge mail list group photo site is
> http://www.shutterfly.com
> Login: blacksmithblacksmith at hotmail.com
> Password: anvil
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>



-- 
Bruce
NJ