CHROMIUM PLATED STEEL SHEET FOR LITHOGRAPHIC PRINTING

PURPOSE:To improve the hydrophilic property, water retentivity, rust resistance and printing resistance of the titled steel sheet and to reduce the cost by forming a metallic Cr layer on the roughened surface of a steel sheet and a Cr oxide hydrate layer on the metallic Cr layer and by providing spe...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	TSUGAWA SHIYUNICHI, ICHIDA TOSHIROU, IRIE TOSHIO, OGATA HAJIME, IMANAKA KEIKO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To improve the hydrophilic property, water retentivity, rust resistance and printing resistance of the titled steel sheet and to reduce the cost by forming a metallic Cr layer on the roughened surface of a steel sheet and a Cr oxide hydrate layer on the metallic Cr layer and by providing specified surface roughness. CONSTITUTION:The surface of a steel sheet is roughened by mechanical polishing, chemical polishing, electropolishing or other method, and a metallic Cr layer is formed on the roughened surface by electroplating by 70-200mg/m . A Cr oxide hydrate layer is formed on the metallic Cr layer by electrolytic chromating by 8-60mg/m when expressed in terms of Cr. The surface roughness is then regulated to 0.3-2.0mum Ra and 100-800PPI at 0.5mum.