Global Patent Index - EP 1752552 B1

EP 1752552 B1 20070328 - Process for the production of vermicular graphite cast iron

Title (en)

Process for the production of vermicular graphite cast iron

Title (de)

Verfahren zum Herstellen von Vermikulargraphitguss

Title (fr)

Procédé de la fabrication d'une fonte à graphite vermiculaire

Publication

EP 1752552 B1 20070328 (DE)

Application

EP 05017145 A 20050805

Priority

EP 05017145 A 20050805

Abstract (en)

[origin: EP1752552A1] Preparation of vermicular graphite casting in which molten iron melt (S) is held in a treatment vessel (3) under an inert atmosphere (A), e.g. nitrogen, of sulphur (S) content below 0.05 wt.% with addition of magnesium (Mg) treatment alloy (B) containing Mg and another metal with elimination of silicon (Si) to an Mg content of the iron melt of 0.0005-0.018 wt.%. The Mg treatment alloy can be NiMg (nickel-magnesium) or CuMg (copper-magnesium) alloy.

IPC 8 full level

C22C 33/10 (2006.01)

CPC (source: EP)

C22C 33/10 (2013.01)

Designated contracting state (EPC)

DE

DOCDB simple family (publication)

EP 1752552 A1 20070214; EP 1752552 B1 20070328; DE 502005000531 D1 20070510; WO 2007017350 A1 20070215

DOCDB simple family (application)

EP 05017145 A 20050805; DE 502005000531 T 20050805; EP 2006064365 W 20060718