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Article | REF: M3565 V1

Filling sand castings. Basic concepts

Author: Gilbert BELLANGER

Publication date: June 10, 2006

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3. Main system types

3.1 Channelless system

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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