Crossing in foundry practice is
A)A means for checking the strength of cores
B)A defect in casting that can be removed by heating in a furnace and cooling at show rate.
C)The process of addition of chemicals to the molten metal to improve its fluidity
D)The process of formation of oxides on the surface of the molten metal
E)The process of forcing metal uniformly into the mould

Question

Quizplus · Accepted Answer

Crossing in foundry practice refers to the process of formation of oxides on the surface of the molten metal. This occurs when the molten metal comes in contact with air, leading to the formation of a thin layer of oxides on its surface.

Crossing in Foundry Practice Is