Assertion: casting porosity | /r/CreatedBy | gas formation
Facets:
Source sentences:
text: Casting porosity can be caused by gas formation or solidification shrinkage while the metal is a liquid.
text: Casting porosity can be caused by gas formation or solidification while the metal is being moved from a liquid state to a solid state.
text: Casting porosity can be caused by gas formation or solidification while the metal is being moved from a liquid state to a solid state.