PROCESS FOR OBTAINING A FOUNDRY BODY FROM A GRANULAR MIXTURE COMPRISING A POLYCONDENSED RESIN CONTAINING AROMATIC PATTERNS AND A FORMALDEHYDE SENSOR

摘要

Process for producing a foundry body comprising: preparing a granular mixture comprising grains, at least one polycondensed resin with formaldehyde and / or its derivatives, a hardening agent, a formaldehyde-sensing compound, a resin rich in aromatic nuclei, identical or different from the polycondensed resin and water, - contacting said granular mixture with at least one surface of a forming tool, and - blowing into the granular mixture of minus a flow of gas at a temperature of 50 ° C to 380 ° C, for a period of from 1 to 300 seconds, to at least partially cure said mixture. A method of manufacturing a molded metal casting, or metal alloy, which comprises a casting of metal in at least one body (mold and / or core) thus formed; and casting part thus manufactured.