TREATMENT OF METALLIC ARTICLE

• Main Authors: NAKAMURA MANABU, ICHIKAWA KAGENORI, NANBA TOSHIHIRO
• Format: Patent
• Language: English
• Published: 05.12.1995
• Edition: 6
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING; CLEANING IN GENERAL; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PERFORMING OPERATIONS; PREVENTION OF FOULING IN GENERAL; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

PURPOSE:To provide a method for cleaning metallic articles capable of degreasing castings, etc., instead of trichloroethane, without any danger of burning or exploding and with no need for waste water treatment. CONSTITUTION:The rusting of a metallic article is inhibited by a rust preventive oil A. The metallic article is degreased and cleaned with a water-soluble cleaning soln. S compatible with the oil A. The spent cleaning soln. from the cleaning stage is separated into a first separated liq. consisting essentially of the oil A and a second separated liq. consisting essentially of the water-soluble cleaning soln. S. The second separated liq. in the separation stage is reutilized as the water-soluble cleaning soln. S in the cleaning stage.