Skw Trostberg Aktiengesellschaft

Halbergerhuette Gmbh

Detlef Missol

Friedrich Wolfsgruber

Helmut Lischka

Hartmut Meyer-Grunow

Jochem Richter

Julius Veit

Wolfgang Geiger

The invention concerns a cored wire comprising a metal tube and a filling of magnesium or other pyrophoric metals passivated with from 0.5 to 5% by weight of organic nitrogen compounds. As the passivating agent, compounds from the series of the s-triazine and/or guanidine derivatives, preferably from 2 to 5% by weight of dicyandiamide, applied by means of an adhesion promoter, are preferred. The wires used in accordance with the invention serve to produce cast iron with spheroidal and vermicular graphite, to desulphurize pig iron melts or to produce metal alloys.

Cored wire with a content of passivated pyrophoric metal, and the use

The present invention provides an agent for the desulphurization, magnesium treatment and inoculation of cast iron melts in a single step based on a silicon alloy, wherein the agent has the following composition:

Agent for the treatment of cast iron melts, process for the production

The present invention provides an agent for the introduction of nitrogen into cast iron, wherein it contains or consists of at least 50% by weight of at least one nitrogen-containing compound with an N--C--N structure and/or a mixture of calcium cyanamide with nitrides of silicon, ferrosilicon, manganese and chromium. The present invention also provides a process for the introduction of nitrogen into cast iron using this agent.

Process for the introduction of nitrogen into cast iron

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Engelsberg, Germany

Detlef Missol