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How does pig iron casting prevent invasive stomata?

Release time:2020-01-06 16:06:09 

(1) Reduce gas volume: controlled sand or core sand gas generant content, wet sand moisture content should not be too high, release agent and water during modeling and mold repair Must not be in excess. Pig iron casting cores need to be dried. Do not store the dried core for a long time. Cores to be used the next day should be oven-dried before use to avoid using damp or rusted cold iron. And core brace.
(2) Improve the permeability of the sand, select the proper airtightness, properly adjust the position of the air outlet to facilitate the exhaust, make sure that the sand core ventilation channel is not blocked You.
(3) Raise the pouring temperature appropriately and open the exhaust holes and exhaust risers so that the gas that has entered the metal liquid rises and is discharged.

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