IRON SLIDE PART OF COMPRESSOR, ITS SURFACE TREATMENT METHOD AND COMPRESSOR

PROBLEM TO BE SOLVED: To improve resistance against wear of a compressor which is compact, provides high output, and has high performance by forming a slide face consisting of an oxygen nitrided layer and a multiporous oxidized iron film of which main component is triiron tetroxide sequentially on a...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAGAWA YUSAKU, ISHIHARA SHIN, KAMITSUMA YASUO, IIZUKA TADASHI, FUKUDA KAZUJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY 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 HEATING INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES ORMATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHERTHAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve resistance against wear of a compressor which is compact, provides high output, and has high performance by forming a slide face consisting of an oxygen nitrided layer and a multiporous oxidized iron film of which main component is triiron tetroxide sequentially on a surface of a base in an iron slide part which constitutes a compression mechanism which compresses refrigerant fluid. SOLUTION: In a compressor in which a compression mechanism which compresses refrigerant fluid is formed by a plurality of opposing iron slide parts and refrigerating machine oil is supplied to a slide part of the slide parts when liquid is compressed, either or both of slide faces of the iron slide parts are treated by oxygen nitriding in a mixture gas containing 0.5 to 5% of air in ammonia gas at 450 deg. to 650 deg.C, and then an oxygen nitrided layer 22 in which particlelike nitride iron and oxidized iron coexist is formed on a surface of a base 24. Next, steam treatment is done at 400 deg. to 800 deg.C to inflate oxidized iron so that a multiporous oxidized iron film 21 of which main component is triiorn tetroxide and has a thickness of 0.1 to 10μm is formed on a top layer of the oxygen nitrided layer 22. Consequently, it is possible to improve the burning property and the adhesion property between slide members.