Smeltkroezen: Difference between revisions
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= Our | = Our crucibles = | ||
* several small graphite ones <50ml | |||
* ~100ml graphite | * ~100ml graphite | ||
* 200 ml SiC | * 200 ml [https://en.wikipedia.org/wiki/Silicon_carbide SiC] graphite | ||
* 5.3 L Sic | * 2 x 400ml graphite | ||
[ | * 5.3 L [https://en.wikipedia.org/wiki/Silicon_carbide Sic] | ||
[[image:KroezenOpRevspace may2018.jpg | 300px]] [[image:KroezenOpRevspace_boven_may2018.jpg | 300px]] | |||
The seller of 5L crucible claims "Ze zijn geschikt voor het smelten van metaal tot 1100°C". Silicium Carbide ( SiC) crucibles all over the internet are all rated up to 1500-1600 °C. No reason to believe that ours is any different. As the seller is a art supply store, I suspect this is a non-techie way of saying "Use only for non-ferrous metals", which is consistent advice for all for SiC crucibles. If you are serious about melting cast iron or steel, you probably know what you are doing anyway ;) | |||
= How to use crucibles = | = How to use crucibles = | ||
... | * Liquid metal is seriously dangerous. Do not YOLO this, it will hurt you. | ||
* Melting Aluminium? No, soda cans are NOT a good source of aluminium. | |||
** They may contain residual moisture, and can explode when dipped in molten metal. | |||
** They are covered in paint and coatings, and create a LOT of slag. | |||
* Do not pack/jam solid metal into the crucible! As it heats it will expand, and can crack the crucible. | |||
* After pouring metal, *always completely* empty the crucible! Clean out as much slag as possible. | |||
* Keep dry, only store back into the samla when completely cooled off | |||
= Things to make = | |||
[[AluminiumBronze]] | |||
Latest revision as of 09:17, 21 June 2018
Our crucibles
The seller of 5L crucible claims "Ze zijn geschikt voor het smelten van metaal tot 1100°C". Silicium Carbide ( SiC) crucibles all over the internet are all rated up to 1500-1600 °C. No reason to believe that ours is any different. As the seller is a art supply store, I suspect this is a non-techie way of saying "Use only for non-ferrous metals", which is consistent advice for all for SiC crucibles. If you are serious about melting cast iron or steel, you probably know what you are doing anyway ;)
How to use crucibles
- Liquid metal is seriously dangerous. Do not YOLO this, it will hurt you.
- Melting Aluminium? No, soda cans are NOT a good source of aluminium.
- They may contain residual moisture, and can explode when dipped in molten metal.
- They are covered in paint and coatings, and create a LOT of slag.
- Do not pack/jam solid metal into the crucible! As it heats it will expand, and can crack the crucible.
- After pouring metal, *always completely* empty the crucible! Clean out as much slag as possible.
- Keep dry, only store back into the samla when completely cooled off