Permeability of green sand ________(a) Increases with ramming(b) Decreases with ramming(c) Can increase and decrease as well with the amount of ramming(d) Does not alter with rammingThe question was asked in quiz.My query is from Molding Processes topic in section Mold and Mold Making of Casting-Forming-Welding I

Permeability of green sand ________(a) Increases with ramming(b) Decre

1.	Permeability of green sand ________(a) Increases with ramming(b) Decreases with ramming(c) Can increase and decrease as well with the amount of ramming(d) Does not alter with rammingThe question was asked in quiz.My query is from Molding Processes topic in section Mold and Mold Making of Casting-Forming-Welding I
Answer» Right ANSWER is (b) Decreases with ramming The BEST explanation: The permeability of green sand decreases with an intensity of ramming DONE on the sand. Hence, the amount of CLAY is adjusted to keep permeability in a profitable ZONE.

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