Sand casting machining with up and down sand shooting way,The sand casting process of the up and down sand injection method is a casting technique that makes sand molds by injecting sand in the up and down directions. In this process, the sand shooting mechanism simultaneously or step by step injects the molding sand into the sand box from both the top and bottom directions to ensure uniform sand mold compaction and good forming effect, which is conducive to improving the stability of casting quality
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