COMPOSITION AND METHOD FOR METAL SURFACE REFINEMENT

A composition for use in the process of mass finishing of metal surfaces of objects, normally in a vibratory finishing process, utilizes a combination of oxalic acid, sodium nitrate, and hydrogen peroxide. The maximum concentration of the latter in an aqueous solution used in the process is limited...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MARK MICHAUD, ROBERT G. ZOBBI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY 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 BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL DRESSING OR CONDITIONING OF ABRADING SURFACES DYES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NATURAL RESINS NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PAINTS PERFORMING OPERATIONS POLISHES POLISHING PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	A composition for use in the process of mass finishing of metal surfaces of objects, normally in a vibratory finishing process, utilizes a combination of oxalic acid, sodium nitrate, and hydrogen peroxide. The maximum concentration of the latter in an aqueous solution used in the process is limited to a value (0.05 gram mole/l) at which excessive dissolution of metal and pitting of the surface are avoided while, at the same time, cooperating with the nitrate to effect a substantial increase in the processing rate. Highly refined surfaces are achieved using the process in relatively short p eriods of time.