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(Solved): The top part of a sand mold is callled Runner Gate Cope Drag QUESTION 18 Molten metal expands in mo ...
The top part of a sand mold is callled Runner Gate Cope Drag QUESTION 18 Molten metal expands in mold when it solidifies. FALSE TRUE QUESTION 19 Through hardened high carbon steel is brittle. Its brittleness can be reduced and its toughness can be in increased by Flame hardening Acids Tempering More hardening QUESTION 20 Pearlite is stronger and harder than ferrite TRUE FALSE
Expert Answer
Question 17 Runner is the channel through which molten metal flows and fills in the cavity. Gate is the space connecting Runner and mold cavity. Cope