Process for production of molds

Provided is a curing agent composition which can prevent a molding sand mixture from drying even when the working time for forming a mold is lengthened. Also provided are both a composition for the production of molds which contains the curing agent composition and a process for the production of mo...

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Bibliographic Details
Main Authors INA YOSHIMITSU, KAGITANI MASAHIKO, FUNADA HITOSHI
Format Patent
LanguageChinese
English
Published 12.09.2012
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:Provided is a curing agent composition which can prevent a molding sand mixture from drying even when the working time for forming a mold is lengthened. Also provided are both a composition for the production of molds which contains the curing agent composition and a process for the production of molds. A process for the production of molds which comprises a step of mulling refractory particles, a water-soluble phenol resin, and a curing agent composition containing an ester compound to form a molding sand mixture and a step of molding the sand mixture, wherein the refractory particles comprise at least 70wt% of a reclaimed sand consisting of an artificial sand produced by a fusion method and the curing agent composition contains at least one compound selected from among triethylene glycol diacetate, triethylene glycol, 3-phenylpropan-1-ol, and benzyl alcohol.
Bibliography:Application Number: CN2010858535