CP1: Fundamentals of Casting and Continuous Casting

A collection of flashcards covering key concepts from the lecture notes on casting and continuous casting.

Flask

The structure that holds the mold together; divided into the cope (top) and drag (bottom) for two-part molds.

Pattern

The replica of the part from which all subsequent molds are created.

Core

Structures that help shape cavities in the part that could not be created using the pattern.

Mold Cavity

The void formed by the removal of the pattern, cores, and core prints from the mold material.

Faster Cooling

Leads to a finer grain structure.

Nucleation

The process of liquid particles solidifying into condensed particulate which form grains.

What are the three different zones of grains?

The three different zones of grains: Chill Zone, Columnar Zone, and Equiaxed Zone.

Most modern patterns for industrial applications are made with

polyurethane

Sprue

The vertical channel into which the molten material is poured.

Runners

The horizontal channels connecting the gating system.

Gates

Entryways between the runners and other components of the gating system.

Riser

A reservoir of excess molten material used to fill in contraction voids as the part begins to cool.

Vents

Channels constructed to exhaust undesired gases in the mold.

Directional Cooling

A technique in which the side of the cast opposite the riser is cooled faster than the riser itself.

Goal of Directional Cooling

To ensure that the riser is always flowing molten material into the part.

Why are Chemical Reactions induced in Melting

Induced to prevent future bonding or to bring impurities out of the molten material before pouring.

Cooling Curves

Graphical representations of the solidification process.

Chvorinov’s Rule

An expression to estimate solidification time.

Drafts

Used to make removing the mold from the finished part easier.

Describe Continuous Casting

A process where a mold is created with one open end; material is fed into the mold, extruded from the open side, and then segmented and processed.