Crucible backing mixes
Dry powder packing that shares the crucible's thermal expansion, gripping and supporting the body through every heating and cooling cycle to extend working life.
Browse the mixes
Magnesia Backing Mix (MIPEX)
A magnesia spinel dry powder packing for magnesia, high alumina and chrome alumina crucibles and transfer ladles.
Zirconia Backing Mix
A graded dry zirconia powder for packing around zirconia crucibles in vacuum furnace applications.
Backing mixes that work as one with the crucible
A backing mix is the dry powder that packs the gap between the induction coil and the crucible. Magna formulates each mix to share the crucible's coefficient of thermal expansion, so mix and crucible expand and contract together.
- Matched to
- The crucible's coefficient of thermal expansion
- The range
- MIPEX magnesia spinel and zirconia mixes
- Also supplied
- Topping mix, coil cement and shell patch
Mix-to-crucible pairing
Talk to a Technical Expert| Backing mix | Use with | Application | Specification |
|---|---|---|---|
| Magnesia, high alumina and chrome alumina crucibles | Dry powder packing around induction crucibles and transfer ladles | Magnesia spinel, MIL-12 | |
| Zirconia crucibles | Dry powder packing in vacuum furnace applications | Graded zirconia, MIL-48B |
Magna also supplies Magnatop topping mix, MC90 coil embedding cement and Magnacote shell patch to complete the induction furnace lining system.
Crucibles and atomising nozzles
Crucibles
Isostatically pressed and vibro cast crucibles in a range of refractory materials, each matched to a Magna backing mix.
Zirconia Atomising Nozzles
Stabilised zirconia nozzles for powder production and spray forming, proven with superalloy, nickel and platinum based melts.
Frequently asked questions
Send your alloy, furnace type and requirements with an enquiry and our technical team will advise.
It depends on the metal, the melt temperature and the furnace. Our technical team will match a crucible — and the backing mix to pair with it — to your process before you order.
Specify the right backing mix
Tell us the crucible material and furnace, and our technical team will confirm the right backing mix.
- Reply from a technical specialist within one working day
- Drawings and specifications welcome
- No obligation