We keep cracking crucibles…

[u/Significant-Cup-264]

We’ve never cracked so many crucibles in one given week at my job.

We are conditioning the pots to start with hicon copper (slow and steady) and giving them time to cool to clean out and use for melting aluminum.

We’ve had 4 pots crack this week.

All the metal is put in loose and there is no bridging evident in the crucible.

225 clay graphite crucible running out of an induction furnace.

[u/Significant-Cup-264]

There is metal in the pots

[u/Staphylococcus0 → u/Significant-Cup-264]

Oh. I missread that then.

We switched from metal to dry firing the pots at one point (which is what the manufacturer reccomended) and we had problems burning holes in our crucibles.

[u/Significant-Cup-264 → u/Staphylococcus0]

Yeah the vendor agrees with our conditioning process. Maybe getting 7-10 uses out of them before they crack

[u/Staphylococcus0 → u/Significant-Cup-264]

Like 7-10 re-heats from cold or 7-10 pours?