Expendable Mold Processes

These flashcards cover essential vocabulary and concepts related to expendable mold processes from the lecture notes.

Expendable Mold

Single-use molds that can be made from materials like sand, plaster, ceramics, or other refractories with bonds.

Green-Sand Casting

The most widely used and least expensive casting process with low tooling costs.

Sodium Silicate - CO2 Molding

A molding process that uses sodium silicate to strengthen molds and cores, providing high dimensional accuracy.

Shell-Mold Casting

A process using resin-coated sand on a heated pattern to create high-dimensionally accurate molds.

Investment Casting

A process where a refractory slurry is formed around a pattern, which is then melted out, leaving a mold for metal casting.

Lost-Foam Casting

A casting process where a foam pattern is vaporized by molten metal, resulting in a metal duplicate of the foam.

Chaplets

Small metal supports placed between cores and mold cavity surfaces that become integral to the final casting.

Dimensional Accuracy

The precision of the cast parts in terms of their dimensions.

Permeability

The property of a core to allow gases to pass through during the casting process.

Surface Finish

The texture and quality of the surface of the cast part.