Metallgesellschaft Aktiengesellschaft

Skw Trostberg Aktiengesellschaft

Ernst J Doliwa

Friedrich Wolfsgruber

Karl J Reifferscheid

It is known to contact molten cast iron with various treating agents in the casting mold in order to influence the base structure or the form of the graphite. Such casting molds for making castings of cast iron containing vermicular and/or spheroidal graphite are provided with an intermediate chamber, which is provided in the pouring system between the pouring gate and the ingate to the casting mold proper. That intermediate chamber serves to receive the graphitizing agent and to contact it with the molten cast iron. To permit a functional adaptation of the chamber surface area or the surface area of the treating agent contained in the chamber to the pouring gate, which changes as the pouring proceeds, the casting mold is provided with a frustopyramidal intermediate chamber which has a rectangular base disposed in the parting plane of the mold.

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Niddatal, Germany

Ernst J Doliwa