Smeltkroezen: Difference between revisions

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= Our crucibles =
= Our crucibles =
* several small graphite ones <50ml
* ~100ml graphite
* ~100ml graphite
* 200 ml [https://en.wikipedia.org/wiki/Silicon_carbide SiC]  
* 200 ml [https://en.wikipedia.org/wiki/Silicon_carbide SiC] graphite
* 2 x 400ml graphite
* 5.3 L [https://en.wikipedia.org/wiki/Silicon_carbide Sic]
* 5.3 L [https://en.wikipedia.org/wiki/Silicon_carbide Sic]
[[image:KroezenOpRevspace may2018.jpg | 300px]] [[image:KroezenOpRevspace_boven_may2018.jpg | 300px]]
[[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. I suspect this is a non-techie way of saying, only non-ferrous metals. At Revspace we do not have the means of achieving temperatures above the rated max. If you are serious about melting cast iron or steel, you probably know  what you are doing anyway ;)
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.
* 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
* 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

  • several small graphite ones <50ml
  • ~100ml graphite
  • 200 ml SiC graphite
  • 2 x 400ml graphite
  • 5.3 L Sic

KroezenOpRevspace may2018.jpg KroezenOpRevspace boven may2018.jpg

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


Things to make

AluminiumBronze