3. Main system types
The simplest is made up of a basin and one or more vertical conduits of reduced cross-section, or pencils, acting as attacks (figure
1
).
This type of system is used exclusively for direct-drop casting of alloys considered to have little or no oxidizability in the liquid state.
Oxidizable or non-oxidizable alloys in liquid state [
]
Alloys can be divided into two main classes, according to their degree of sensitivity to oxidation in air in the liquid state: those based on or containing a significant proportion...
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Main system types