Electric Furnace for Melting Aluminum 

Thank you!

Thank you!!

Thank you!!

Thanks for the comment! My son also went to play video games right after this. I guess all kids are the same... I would love to see the can crusher you built!

Thank you!

Agree about the bricks and the fire wool also. They contains silicates which once inside the lung, cannot escape leading to a lung condition called silicosis. ALWAYS wear a respirator when working with silicates. Fantastic build! 👍

​@@7chome_seisakusyo is it a distribution strip

Thank you.

Oh! I thought I had turned it off. Thank you!

Thank you!!

Thank you !!!

Thank you!

Thanks for the comment! I just have two 600W kanthal wires connected directly to the outlet in parallel.

Hello! Thanks for watching! Welcome to the world of homemade metal melting! I live in a small residential area, so using a gas or other fire is a bit difficult, so I built an electric furnace. If your place is large and gas is easily available, I would prefer to make it with gas. I would also build a gas furnace if I could. I wish you success and enjoyment!

Good luck!

Thanks for the comment! I did not measure the density of the billet, but the porosity was less than I expected.

I am very interested in copper melting and it is one of my dreams to try it!

Thanks for the comment. The power supply is 1500W. I don't know about other questions, sorry.

Thanks for the comment! The cement I used is fireproof. Quenching is not necessary, but I did it just in case. I didn't add reinforcing steel bars to the lid I made in the video, so it cracked after a few uses. So I rebuilt it after this with reinforcing steel bars. The crucible was bought from amazon. Please check out my other videos!

@@7chome_seisakusyo very welcome! Thank you for all the great answers! Domo arigato

Thanks for the comment! My crucible is made of graphite. Both iron and graphite are conductors, so it is dangerous to put the wire too close to the crucible. If you want to melt faster, you may want to increase the power or improve the heat retention.

Thanks for your comment! I don't know how fast a small furnace weighing 2-3 kg is, but my electric furnace takes about 1.5 hours to reach the temperature at which the aluminum melts.

Sorry, I am not familiar with it.

Thank you for comment! The internal volume is about 1 liter. The size of the refractory brick is 230 mm x 110 mm x 65 mm.

@@7chome_seisakusyo Thank you, that is helpful to know.

Thank you!!

This coil is 600W and 100V, so two coils are flowing 12A in parallel. I would like to make 3 coils in parallel, but 18A would exceed the outlet rating of 15A. I certainly need more power...

Thank you,Of course I do preheat.

About 30min. Thank you!

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qzoYE6EJHCc.html Please refer to this page. However, this thermocouple has a heat resistance temperature of 1300°C.

Thank you!!

Yes.

This coil is 600W and 100V, so two coils are flowing 12A in parallel. I would like to make 3 coils in parallel, but 18A would exceed the outlet rating of 15A. I certainly need more power...

The temperature will not be that high.

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100V x 6A = 600W x 2coil = Total 1200W

I make mechanical parts from molten aluminum. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-2fKIVmtYpmM.html Yes, I understand it is cheaper to buy them. Simply because it is fun.

It is a 100v / 600W resistor, so about 16.67 ohms.

Thanks for your comment! How many degrees you can reach depends on the amount of heat generated by the coils and the heat retention of the furnace. To reach 1800°C in a less powerful electric furnace, I think you would need to increase the thickness of the firebrick walls by about 3 times. I would also like to build a larger furnace to melt copper!

@@7chome_seisakusyo Assuming they are using nichrome resistance wire, which is what most furnaces use and what you appear to be using, you can't get to 1800C because nichrome melts at about 1400C. I'm not aware of any electrical resistance heating wire that can withstand 1800C. If I am in error please correct me as I would like to be wrong. It would be much better if the wire could get that hot. To get to those temperatures the options I know are: gas furnace, arc furnace and coal. Arc furnace is cleanest and easiest to build at home, but shock hazards must be accounted for.

Oh, I had completely forgotten about that. You are right. Nichrome wire melts at 1400C. If you want to do it with electricity, maybe use an electromagnetic induction coil?

@@7chome_seisakusyo That's a good idea, I'll look into building one. I forgot those existed. Thank you very much for the suggestion,

But the problem is i need this furnace to heat minaral stones . Is it possible to use electric magnatic furnace for that purpose ?

Thank you! kako??

@@7chome_seisakusyo copper desu

Yes, I would like to melt copper someday!