Cleaning process for removing e.g. molding sand, turnings, coolant, coating, drilling dust or dirt, especially from part with narrow cavity, uses medium containing carbon dioxide, which is compressed, heated and decompressed

摘要

In cleaning articles in a pressure vessel with compressed cleaning medium, which contains a gas and is compressed and decompressed once or several times, the cleaning medium contains carbon dioxide (CO2), which is compressed to over 500 bar and heated to over 150 deg C, then decompressed and cooled, so that the gas occupies a volume many times the volume of the compressed cleaning medium in the pressure vessel.