It's a mix of 2/3 potassium chloride and 1/3 sodium chloride.
Jim Ash
-----Original Message-----
From: Matthew Tinker
Sent: Jun 23, 2011 7:11 AM
To: gingery_machines@yahoogroups.com
Subject: Re: [gingery_machines] flux
Hi Malcolm,
what is "LoSalt"?
Regards, Matthew
Matthew TINKER
CNC conversion 1944 Colchester Lathe build-up log
http://www.cnczone.com/forums/showthread.php?t=35519
--- On Thu, 23/6/11, Malcolm Parker-Lisberg <mparkerlisberg@yahoo.com> wrote:
From: Malcolm Parker-Lisberg <mparkerlisberg@yahoo.com>
Subject: Re: [gingery_machines] flux
To: gingery_machines@yahoogroups.com
Date: Thursday, 23 June, 2011, 12:43
Joel
When you melt chunks of aluminium there is a large surface area covered in aluminium oxide and hydrogen can be dissolved into the melt. When the aluminium cools the hydrogen precipitates out of the melt as bubbles leaving a porous casting. Degassing and casting into ingots reduces the surface area available to absorb hydrogen next time you melt.
You should find washing soda, Sodium carbonate, on the supermarket shelves.
Malcolm
I don't suffer from insanity I enjoy it!
--- On Thu, 6/23/11, joel wahl <joelislost@yahoo.com> wrote:
From: joel wahl <joelislost@yahoo.com>
Subject: Re: [gingery_machines] flux
To: gingery_machines@yahoogroups.com
Date: Thursday, June 23, 2011, 8:14 AM
why do you need to turn your source aluminium, to ingots first before casting?
And where do i find washing soda?
thanks joel
--- On Wed, 6/22/11, Malcolm Parker-Lisberg <mparkerlisberg@yahoo.com> wrote:
From: Malcolm Parker-Lisberg <mparkerlisberg@yahoo.com>
Subject: Re: [gingery_machines] flux
To: gingery_machines@yahoogroups.com
Date: Wednesday, June 22, 2011, 7:08 PM
Jim
You don't need a flux when melting aluminium. Use a twist of aluminium foil with LoSalt in it to degas and a twist of aluminum foil with washing soda in it to increase fluidity. Stir in both, one at a time, just before pouring, skim then pour.
Turn your source aluminium, to ingots first before casting.
Malcolm
I don't suffer from insanity I enjoy it!
--- On Thu, 6/23/11, Jim Ash <ashcan@earthlink.net> wrote:
From: Jim Ash <ashcan@earthlink.net>
Subject: Re: [gingery_machines] flux
To: gingery_machines@yahoogroups.com
Date: Thursday, June 23, 2011, 12:56 AM
Somewhere I heard/read about using borax, but then I just saw on the backyard metal casting site somebody's recommendation to NOT use it because it's reactive with aluminum. Can somebody with a better knowledge of metallurgy/chemistry comment on this?
Jim Ash
-----Original Message-----
From: matrice197
Sent: Jun 22, 2011 5:07 PM
To: gingery_machines@yahoogroups.com
Subject: [gingery_machines] flux
I work at a Galvanizing plant, we use ammonium cloride as a flux. Can I use this for my aluminum casting?
Thanks,
Chris
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