Vacuum & Controlled Atmosphere Systems
The creation and casting of super alloys and many other advanced and reactive metals requires sophisticated vacuum or controlled atmosphere melting and remelting systems. Inductotherm builds most of the world’s zoned induction heating coils and multiple output power supplies used in the manufacturing of ultra-high-temperature advanced materials such as carbon carbon.
 |
Graphite Heating: In graphite heating, maintaining the desired temperature profile within the susceptor is absolutely critical in order to achieve maximum productivity. Precise power input to each zone of the susceptor is achieved by varying either or both the overall power level and the amount of time power is switched to a particular zone of the coil during each power distribution cycle of the system. This leads to increased yields of product over a given length hot zone. |
 |
Induction Skull Melting / ISM / Cold Crucible Melting: High temperature metals such as titanium, Zirconium and their alloys cannot be melted in regular crucibles since in a molten state they react with refractory and metals. Therefore, they are melted in a slotted water cooled copper crucible. ISM (Induction Skull Melting) is a method of melting metals in a segmented,
water-cooled copper vessel, under vacuum or controlled atmosphere
in an induction coil. This is done metal-to-metal, without a refractory lining. The copper crucible is made up of
water-cooled segments or "fingers". The magnetic field
produced by the coil, in effect, passes through the crucible
to induce heat in the metal charge causing it to melt. The
field also intensively stirs the liquid metal pool. A thin layer
of metal remains frozen against the bottom of the crucible forming a skull, often known as Skull Melting. The low velocity boundary layer in the liquid
adjacent to the skull, together with the skull itself and
the interface (joint) between the skull and the crucible all
serve as thermal resistances, reducing the heat conducted
from the hot liquid into the cold crucible. |
 |
Induction Vacuum Melting: Furnaces range from small induction vacuum furnaces with capacities measured in grams to giant furnaces with capacities of 60 tonne and more. |
 |
Power Window Ladle System: The whole furnace can be sealed and used as a vacuum chamber to produce high quality steels. The induction ladle may be supplied with a bottom slide gate for direct casting. |
Inductotherm has an extensive product range and will tailor standard products
to suit your individual needs and applications as required.
Please contact us to see what we can do for you.
