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Melting large amount of aluminium

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NeoTech:
Its that making a big plate is one of my goals as well i need a large 800x750x50mm piece of aluminium. And buying that is just insanely expensive.
The big problem with melting heads and intake manifolds is the high content of silica, its really harsh to the tooling when milling it.
Been pondering if there is anyway to slag out the silica with some additive.. purifying it back to aluminium. Then do a series of  heat treatments so it ages.

A T4 can be achieved basicly by letting the plate sit in room temperature for a couple of months. A T5 is something like 180C for 12 hours. I know you can do this to a T6 as well but dont have the temperatures or time.. anyone that can fill the gaps ?? =)

trevoratxtal:

--- Quote from: SwarfnStuff on August 04, 2015, 03:17:39 AM ---Well. to me, and I assume Glumpy, it's just called, "Home"  :lol: , OZ, Downunder the home of Vegemite.  :beer:
John B

--- End quote ---
:offtopic:
Hello John I see on the News. :lol:
 that Vegemite is to be banned in some areas as it is a dangerous ingredient in some drink. :beer: :drool:
You folk should have stuck to Marmite and let the Brits export it to you.
Us Brits fight back. :bang:
Just Joking. :) :loco:
I love this post on Aluminium smelting. :clap:
Trev

ausdier:

--- Quote from: glumpy on August 10, 2015, 08:59:04 AM ---Wow!
You sure do like your ally!
Numbers and weighed every bar and looks like over 100 bars.  Is there a reason you are stockpiling so much? Do you do metal casting or have some other use for it?

--- End quote ---

I have about 400kg worth of bars.
These are a combination of Extrusions, Cans, Wheels and Engine Components.
I have plans to start casting components soon.
I just want to finish my CNC Router first so I can make some patterns.
I will also be melting my stockpile of copper and brass soon as well.
My crucible for the ally holds about 10kg max.

glumpy:

--- Quote from: trevoratxtal on August 12, 2015, 04:14:03 AM ---Hello John I see on the News. :lol:
 that Vegemite is to be banned in some areas as it is a dangerous ingredient in some drink. :beer: :drool:

--- End quote ---

I hadn't heard about this so looked it up.
Yet another sensationalist media beat up crock of ship. Classic case of a another inconsequential politician dreaming up  a load of rubbish to get some media attention to his cause and be seen to actually be doing something so as to justify his position and perks.
 
They garbage the media and politicians come out with is why I refuse to watch the news or take any interest in politics.
It's all a joke and insult to peoples intelligence.

We always had Marmite and Vegemite in the house when I grew up. Personally I preferred Marmite myself but they are pretty damn close anyway.


For ally I could get a LOT of wheels here but I can get $13-16 ea for them so I cash them in at the scrapyard. Last load I took in the ute netted $330. For that I'll stick to the other bits that they only pay steel prices for unless you spend the time stripping them all down. That said, there is quite a few Kg of ally in a wheel so if you needed the stuff and was cheaper than buying other scrap ( wheels are worth more per KG than regular casting ally here) they would be a good bulk source.

mattinker:
Wheelium is a strong, high quality easily cast alloy. I don't remember what casting group it was on, but Rex in Oregon (I think) did some tests and came to the conclusion that it's tensile strength approached that of mild steel! Hence the price difference!

Regards, Matthew

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