Watch how molten metal freezes and how it affects casting quality.
Section 1
Describe how solidification progresses from the mould wall inward.
Identify the chill, columnar and equiaxed zones.
Explain how solidification affects grain structure and properties.
Section 2
Solidification begins at the cooler mould walls and moves inward. The first metal to freeze forms a fine-grained chill zone, followed by elongated columnar grains, and finally a coarse equiaxed zone in the slowly cooling centre.
The pattern of solidification strongly influences strength, hardness and the location of any shrinkage defects.
Section 3
Interactive animation will appear here.
Animated visualizations for this mission are being crafted and will be embedded in this space.
Section 4
Interactive activity coming in Sprint 3.
Hands-on drag-and-drop and simulation activities will be unlocked here in the next sprint.
Section 5
Answer all 5 questions correctly to unlock the next mission.