Aluminium oxide has a melting point of 2,072 °C (3,762 °F; 2,345 K), Aluminium (pure) has a melting point of 660.32 °C (1220.58 °F; 933.47 K) The slag you previously dealt with (alu-foil balls) is mostly Aluminium oxide, so this explains why it wouldn't melt together with the rest. I do not know if there is any flux that can/will react with the oxide, but likely it is highly toxic - so it is best to use 'pure' Aluminium (and its alloys), otherwise you'll likely end up with a lot more losses than you plan on. I doubt it is the various alloys that produce a lot of slag - it is the oxide(s), at least this goes for most metals in my experience. The alloys has various other properties like strength, how 'bendable', operating temperature ranges, etc.
I have no idea what I'm doing lol. There must be some legit process to making it work but I didn't know the oxide was so hard to melt. I've seen images of guys just having a bunch of it at the bottom of their molds. I was mostly putting what looked like the same grade of heatsink in there but there was one in particular that almost looked more like stainless steel. It wasn't magnetic and was definitely harder to break. I had to work it back and forth in the vice for a while. I'm guessing that's what had all the crap in it cause the first little mold I did had no smell whatsoever. Dipping it in the water to cool it off is what set it off though. I immediately was wondering if I had shit my pants or something and just didn't realize it lmao.
@@rodriguezfranco3839 yea the Crucible Heats before the metal does. Keeping that sweltering heat down in there apparently is what helps the melting process. The other Crucible was basically just a vessel to hold the metal in place as it heated but it was always meeting the colder temperature of The Crucible so it wouldn't get runny
@@rodriguezfranco3839 Yea I need to figure out the method but maybe I also need to get it hotter first. Those vapors are legit nasty though. I caught a bunch coming off the crucible at first because I didn't prepare it any way. The sulfur smell was worse tho.
Aluminium oxide has a melting point of 2,072 °C (3,762 °F; 2,345 K),
Aluminium (pure) has a melting point of 660.32 °C (1220.58 °F; 933.47 K)
The slag you previously dealt with (alu-foil balls) is mostly Aluminium oxide, so this explains why it wouldn't melt together with the rest.
I do not know if there is any flux that can/will react with the oxide, but likely it is highly toxic - so it is best to use 'pure' Aluminium (and its alloys), otherwise you'll likely end up with a lot more losses than you plan on.
I doubt it is the various alloys that produce a lot of slag - it is the oxide(s), at least this goes for most metals in my experience. The alloys has various other properties like strength, how 'bendable', operating temperature ranges, etc.
I have no idea what I'm doing lol. There must be some legit process to making it work but I didn't know the oxide was so hard to melt. I've seen images of guys just having a bunch of it at the bottom of their molds. I was mostly putting what looked like the same grade of heatsink in there but there was one in particular that almost looked more like stainless steel. It wasn't magnetic and was definitely harder to break. I had to work it back and forth in the vice for a while. I'm guessing that's what had all the crap in it cause the first little mold I did had no smell whatsoever. Dipping it in the water to cool it off is what set it off though. I immediately was wondering if I had shit my pants or something and just didn't realize it lmao.
I dont know what you're doing, but it looks awesome and complicated
We out here making hot metal babies
Fancy new crucible !! I wonder if the crucible is loading it more , like did you try putting it alone without any material and seeing if it gets hot ?
@@rodriguezfranco3839 yea the Crucible Heats before the metal does. Keeping that sweltering heat down in there apparently is what helps the melting process. The other Crucible was basically just a vessel to hold the metal in place as it heated but it was always meeting the colder temperature of The Crucible so it wouldn't get runny
@@Magneticitist you probably need some flux to get the Al oxide to raise to the top , would be better if you do it outside , cause of the nasty vapors
@@rodriguezfranco3839 Yea I need to figure out the method but maybe I also need to get it hotter first. Those vapors are legit nasty though. I caught a bunch coming off the crucible at first because I didn't prepare it any way. The sulfur smell was worse tho.