COATED SAND FOR MANUFACTURING MOLD

PURPOSE:To shorten hardening time and to lower hardening temp. by applying resin component (a) 2.5-furan dialdehyde and compound which can generate the specific combination by coming into reaction with the resin component (a) and having solid-state at the room temp. and active hydrogen on sand. CONS...

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Bibliographic Details
Main Authors TAKASHINA SHIGEAKI, KIUCHI KAZUHIKO
Format Patent
LanguageEnglish
Published 16.04.1991
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:PURPOSE:To shorten hardening time and to lower hardening temp. by applying resin component (a) 2.5-furan dialdehyde and compound which can generate the specific combination by coming into reaction with the resin component (a) and having solid-state at the room temp. and active hydrogen on sand. CONSTITUTION:The coated sand is formed with the resin component (a) 2.5-furan dialdehyde and the resin component (b) having solid-state ar room temp. and active hydrogen and being the compound which can generate the combination shown with the formula by coming into reaction with the resin component (a), e.g. phenol series monomer, phenol series resin, amino compound, etc. In the formula, X shows the aldehyde remain group. The resin components (a), (b) and curing agent are applied on surface of refractory aggregate and by using this to the coated sand for manufacturing the mold, as the hardening time is shortened and the hardening temp. can be lowered, strain to the metallic mold and strain to the mold come to a little.
Bibliography:Application Number: JP19890229075