Difference between revisions of "Smeltkroezen"

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(Our crucibles)
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[[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. As the seller is a art supply store,  I suspect this is a non-techie way of saying "Use only for non-ferrous metals". At Revspace we do not have the means of achieving temperatures above the rated max, other than the oxy-acetylene torch which is not really useful for use on crucibles. If you are serious about melting cast iron or steel, you probably know  what you are doing anyway ;)
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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". 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 =

Revision as of 08:54, 27 May 2018

Our crucibles

  • ~100ml graphite
  • 200 ml SiC
  • 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". 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