MANGANESE PHOSPHATE CHEMICAL CONVERSION TREATING METHOD FOR OIL WELL TUBE JOINT MADE OF Cr-CONTAINING STEEL

PROBLEM TO BE SOLVED: To provide a manganese phosphate chemical conversion treating method for an oil well tube joint made of Cr-containing steel in which a manganese phosphate film is formed on the surface of the oil well tube joint. SOLUTION: In this method for subjecting an oil well tube joint 10...

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Hauptverfasser:	OTA KYOICHI, IWASAKA MASAYUKI, MIZUNO KENSUKE, TSUKANO YASUTSUGU, SATO NAOHARU, KANEZAKI KENICHI, SATO SHIGEKI
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 ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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