Hi all, I've been reading through a bunch of previous posts, and am curious about a couple things. I am going to be trying to melt some Pt scrap pieces (not powder), within the coil of an induction heater, into buttons and ingots, letting them cool in the crucibles. From what I've seen so far, the following seem to be true:
1. Don't use alumina due to temps; use YtSZr or MgO
2. Ideally, I should bed an inner crucible in sand within an outer crucible for shock purposes
Based on the weights I'm striving for (< 50g) I've also seemed to gather that #2 may not be strictly necessary? If I used a small, solo rectangular YtSZr/MgO crucible directly in the coil, would that work?
My initial planning has me placing the melting crucible in the coil, turning it on, letting it melt, then turning it off and letting the metal cool, but I'm sure I'm probably missing more to this
1. Don't use alumina due to temps; use YtSZr or MgO
2. Ideally, I should bed an inner crucible in sand within an outer crucible for shock purposes
Based on the weights I'm striving for (< 50g) I've also seemed to gather that #2 may not be strictly necessary? If I used a small, solo rectangular YtSZr/MgO crucible directly in the coil, would that work?
My initial planning has me placing the melting crucible in the coil, turning it on, letting it melt, then turning it off and letting the metal cool, but I'm sure I'm probably missing more to this