Green sand mold and its production method, and production method of iron-based casting
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United States of America Patent
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Mar 16, 2021
Grant Date -
Aug 18, 2016
app pub date -
Sep 30, 2014
filing date -
Sep 30, 2013
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Abstract
A green sand mold comprising at least one pair of green sand mold parts each comprising a recess and a mating surface, wherein a cured layer comprising a thermosetting resin as a main component is formed on the recess and mating surface of each green sand mold part, and wherein the cured layer has hardness of 40-98, a thickness of 0.5-6 mm, and gas permeability of 70-150, is produced by applying a curing material comprising the thermosetting resin as a main component and having viscosity of 1-100 mPa·S to the recess and mating surface of each green sand mold part, combining the green sand mold parts, and then heat-hardening the curing material.
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