Amol Gupta
knowledgeSeaker2207
- Joined
- Dec 17, 2023
- Messages
- 212
So I came across a sreertips video of melting silver.
I like the idea of wrapping the ceramic wool around the crucible, makes for a very good candidate for tilting furnace.
A few things I'd like to do differently, firstly I'd like to use an electrical source for heating(kanthal wire most probably) instead of a torch flame, wrapped around with ceramic wool this way the heat source will be consistent during the melt even at the time of pouring, leaving no residue on the crucible which is often the case if the charge is not hot enough.
A set up like this will be easy to mount and pour from, making it a one man job.
Something I cannot figure out is the material for the crucible. I am looking for something that is thermally conductive but electrically insulated. My first choice was using a graphite crucible it has very good thermal properties but it is also electrically conductive which makes it dangerous for handling.
I was thinking of coating the crucible with some material as is shown in this video.
But I guess I'm better of using a suitable material, I have seen furnaces where the heating element is coated with some sort of ceramic being extensively used but I'm not sure of the material.
Any input on the same would be highly appreciated.
Thanks.
I like the idea of wrapping the ceramic wool around the crucible, makes for a very good candidate for tilting furnace.
A few things I'd like to do differently, firstly I'd like to use an electrical source for heating(kanthal wire most probably) instead of a torch flame, wrapped around with ceramic wool this way the heat source will be consistent during the melt even at the time of pouring, leaving no residue on the crucible which is often the case if the charge is not hot enough.
A set up like this will be easy to mount and pour from, making it a one man job.
Something I cannot figure out is the material for the crucible. I am looking for something that is thermally conductive but electrically insulated. My first choice was using a graphite crucible it has very good thermal properties but it is also electrically conductive which makes it dangerous for handling.
I was thinking of coating the crucible with some material as is shown in this video.
But I guess I'm better of using a suitable material, I have seen furnaces where the heating element is coated with some sort of ceramic being extensively used but I'm not sure of the material.
Any input on the same would be highly appreciated.
Thanks.
