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autocast universal

230 Casting System Accessories and replacement parts Stand 1.9. 03 A 29

4. Casting with Alloys

All customary dental alloys for prosthetics can be cast with

the autocast universal

230 unit. The alloys are melted on a

special ceramic crucible. The electric arc is deflected over an

electrode that is set in the crucible.

The output of the electric arc is regulated according to the

alloy being used. The tipping of the crucible is done manually

via the viewing window.

Preparing the casting ring

Prepare casting object as usual, either with a sprue bar or

directly.

The use of metal muffle rings is strongly recommended.

Depending on the investment material or preheating

program, in some cases micro cracks can form in the invest-

ment material. Cracks can lead to inferior pressure values

when casting and therefore produce a poor casting reaction.

When model casting, the stability of the casting muffle has

to be considered. If necessary, metal muffle rings can also

be used.

Sprue formers

It is essential to use sprue formers from the rematitan

casting system, or other bases with sprue formers that have

a clean and smooth base.

In order to seal the casting chamber, it is important to have

a complete and smooth seal. When model casting, it is also

recommended to use the rematitan

sprue formers (see

instructions for rematitan

Attention! Do not use sprue formers which do not provide

a perfect sealing (i.e. BEGO etc.).

Preheating the muffle

The muffles are preheated, independent of the casting

process, according to the instructions for the investment

material and casting alloy.

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Diamond Systems Tritan Instrucciones de operaciones Pagina 36