MANUFACTURE OF CASTING

PURPOSE:To form carbon film having the specific characteristic on interface between a mold and a casting at the time of casting by manufacturing the mold with use of binder containing acid setting resin and non-acid setting resin in the specific ratio. CONSTITUTION:Molten iron at 1,200 - 1,800 deg.C...

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Bibliographic Details
Main Authors FUNADA HITOSHI, KIUCHI KAZUHIKO
Format Patent
LanguageEnglish
Published 06.06.1991
Subjects
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:PURPOSE:To form carbon film having the specific characteristic on interface between a mold and a casting at the time of casting by manufacturing the mold with use of binder containing acid setting resin and non-acid setting resin in the specific ratio. CONSTITUTION:Molten iron at 1,200 - 1,800 deg.C is poured into a mold molded with the binder containing organic binder as the essential component, and the carbon film having the characteristic as shown in the table 1 is formed on the interface between the mold and the casting. For this purpose, the binder is composed of the acid setting resin A selected from furan series resin, phenol series resin or urea series resin and the non-acid setting resin B selected from the table 2, and the blending ratio of A and B is made to B/A+B = 0.1 - 0.5 based on wt. ratio of solid contents. In this result, as the carbon film in the table 1 can be formed, even in the case of wholly or almost saving facing agent, roughness of the surface in the casting can be prevented.
Bibliography:Application Number: JP19890272409