Cleaning method for metal chromium piece

The invention relates to a cleaning method for a metal chromium piece. The cleaning method comprises the following steps: producing a metal chromium piece by virtue of an electrolytic method, stripingthe metal chromium piece from a cathode plate, detecting the lead content of the metal chromium piec...

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Bibliographische Detailangaben
Hauptverfasser:	TIAN KAI, LIU HAITIAN, ZHANG YUCHI, WANG GANG, LIU NINGNING, LI JIE, JIANG SONG, CUI CHUANHAI, HOU YUCHUN, SUN HAIYING, ZHANG XIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING CLEANING IN GENERAL CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROLYTIC OR ELECTROPHORETIC PROCESSES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY ORREFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention relates to a cleaning method for a metal chromium piece. The cleaning method comprises the following steps: producing a metal chromium piece by virtue of an electrolytic method, stripingthe metal chromium piece from a cathode plate, detecting the lead content of the metal chromium piece, directly putting the metal chromium piece into a water circulating type roller cleaning machinewhen the lead content of the metal chromium piece is less than or equal to 0.002%, cleaning by virtue of a clean water roller, adding a proper amount of nitric acid or oxalic acid into clean water inthe cleaning process when the lead content in the metal chromium piece is more than or equal to 0.002%, and cleaning; and controlling the water temperature at 30-80 DEG C in the cleaning process of the water circulating type roller cleaning machine, carrying out automatic water washing in an automatic cleaning slot by virtue of a full-automatic ultrasonic cleaning machine through clean water, controlling the ultrasonic freq