Robert1998
Member
- Messages
- 270
- Location
- Spain
Hey man. Do you use the microwave to defrost or cooking meals? You loser! Real men use the microwave oven to melt metal.
Ok, I know this isn´t the most useful way to melt metals, but as experiment it´s fun. Microwave move particles and that movement heat them up. You have 2 problems. First, you need a crucible that absorbs the microwave instead of reflect them, you need a semiconductor. This is easy to do with silicon carbide, also is easy to find in the abrasive wheels. The other problem is that the oven is not made to handle those temperatures, but this has an easy solution with refractory bricks (the white and light ones). With this insulation you prevent the heat escaping and damaging the oven, and also, the crucible will heat up faster.
To make the crucible you can buy the silicon carbide or smash old grinding wheels until you get small grains. As binder you can use a 7% of bentonite. Mix everything with water, make a crucible (be sure about compact it well) and let it dry for 2 days. The ticker the walls of the crucible, the hotter will be.
About the brick, cut one in 2 pieces, and make a small hole in both of them to accommodate the crucible. In one of them, make a small notch to see if the crucible is red hot.
That´s all. To melt aluminum in a 800 watts microwave only takes 15 minutes (I mean small amounts in a 5 cm crucible).
The maximum temperature that the bricks can handle is about 1.200ºC and forget about melting iron, this metal reacts with the silicon carbide.
With the use, the bricks will break (Mine broke this time) and with much more use the crucible too, but you can smash it and rebuild it with water.
All the credit of that is from this web http://www.cientificosaficionados.com/fundicion microondas/fundicion microondas.html
I have made a small dolphin tail for mi girlfriend.
Hey man this is hot as hell!!
[/url]
I don´t think I´m going to sleep in the couch tonight
Ok, I know this isn´t the most useful way to melt metals, but as experiment it´s fun. Microwave move particles and that movement heat them up. You have 2 problems. First, you need a crucible that absorbs the microwave instead of reflect them, you need a semiconductor. This is easy to do with silicon carbide, also is easy to find in the abrasive wheels. The other problem is that the oven is not made to handle those temperatures, but this has an easy solution with refractory bricks (the white and light ones). With this insulation you prevent the heat escaping and damaging the oven, and also, the crucible will heat up faster.
To make the crucible you can buy the silicon carbide or smash old grinding wheels until you get small grains. As binder you can use a 7% of bentonite. Mix everything with water, make a crucible (be sure about compact it well) and let it dry for 2 days. The ticker the walls of the crucible, the hotter will be.
About the brick, cut one in 2 pieces, and make a small hole in both of them to accommodate the crucible. In one of them, make a small notch to see if the crucible is red hot.
That´s all. To melt aluminum in a 800 watts microwave only takes 15 minutes (I mean small amounts in a 5 cm crucible).
The maximum temperature that the bricks can handle is about 1.200ºC and forget about melting iron, this metal reacts with the silicon carbide.
With the use, the bricks will break (Mine broke this time) and with much more use the crucible too, but you can smash it and rebuild it with water.
All the credit of that is from this web http://www.cientificosaficionados.com/fundicion microondas/fundicion microondas.html
I have made a small dolphin tail for mi girlfriend.
Hey man this is hot as hell!!
[/url]I don´t think I´m going to sleep in the couch tonight
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