PRODUCTION OF SAND CORE FOR CASTING

PURPOSE:To obtain a sand core for casting having high dimensional accuracy and providing sufficient strength needed as the core by using water soluble ultraviolet ray hardening resin as binder for molding sand. CONSTITUTION:By executing mixer kneading after mixing the molding sand 4 and the water so...

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Bibliographic Details
Main Authors OHASHI TAKAYUKI, WATABE EISUKE
Format Patent
LanguageEnglish
Published 23.04.1992
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:PURPOSE:To obtain a sand core for casting having high dimensional accuracy and providing sufficient strength needed as the core by using water soluble ultraviolet ray hardening resin as binder for molding sand. CONSTITUTION:By executing mixer kneading after mixing the molding sand 4 and the water soluble ultraviolet ray hardening resin 3 as the resin binder in the mixer 5, resin coated sand 6 coating the above resin 3 on the molding sand 4 is obtd. Successively, after blow-forming by blowing the resin coated sand 6 in a transparent acrylic-made forming mold 7 being possible to penetrate the ultraviolet ray, the ultraviolet ray irradiation is executed with an ultraviolet irradiator, this is hardened.
Bibliography:Application Number: JP19900245179