METHOD FOR MANUFACTURING A CASTING-DIE BODY AND A CASTING-DIE BODY

A casting-die body (1) made of a hardenable copper alloy is provided with an inn er wear-protective layer (7) of chromium whose hardness decreases from the billet-s ide surface (8) in the direction of the casting-die body (1). The wear-protective la yer (7) is made up of two chromium layers (9, 10)....

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Bibliographische Detailangaben
Hauptverfasser:	RODE, DIRK, RETHMANN, RALF, HEMSEIER, HANS-JUERGEN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING
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Beschreibung
Zusammenfassung:	A casting-die body (1) made of a hardenable copper alloy is provided with an inn er wear-protective layer (7) of chromium whose hardness decreases from the billet-s ide surface (8) in the direction of the casting-die body (1). The wear-protective la yer (7) is made up of two chromium layers (9, 10). For this purpose, the casting-die body ( 1) is given a solution heat treatment, is chromium plated, and is then hardened, as a result of which the initially very great hardness of the chromium layer (9) is reduced. Th e hardness of the chromium layer (9) then is about 650 HV. Subsequently, to increase the we ar protection, the second chromium layer (10) is applied. The result is a conventio nal chromium-plated layer having a hardness of between 850 HV and 1050 HV.