MOLDING MATERIAL MIXTURE AND FEEDER FOR CASTING ALUMINUM

Title:

MOLDING MATERIAL MIXTURE AND FEEDER FOR CASTING ALUMINUM

Document Type and Number:

WIPO Patent Application WO/2010/057464

Kind Code:

A3

Abstract:

The invention relates to an exothermic molding material mixture for producing feeders for casting aluminum, comprising at least: - a fireproof base molding material; - a binder; - a proportion of an oxidizable metal of from 5 to 18 % by weight relative to the molding material mixture; - an oxidizing agent at a proportion of 10 to 50 % by weight relative to the quantity of oxidizing agent required for completely oxidizing the oxidizable metal; and – an igniter for oxidizing the oxidizable metal at a proportion of 15 to 50 % by weight relative to the quantity of the oxidizable metal. A feeder made of the exothermic molding material mixture ignites reliably, even at low temperatures, and is characterized by low heat emission. It is therefore particularly suitable for casting aluminum.

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Inventors:

GERHARDS ANDRE (DE)
SKERDI UDO (DE)
KROTH JOSEF (DE)
REHSE HENNING (DE)

Application Number:

PCT/DE2009/001602

Publication Date:

October 21, 2010

Filing Date:

November 16, 2009

Export Citation:

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Assignee:

LUENGEN GMBH AS (DE)
GERHARDS ANDRE (DE)
SKERDI UDO (DE)
KROTH JOSEF (DE)
REHSE HENNING (DE)

International Classes:

B22C9/08

Domestic Patent References:

WO2006097278A1

2006-09-21

Foreign References:

EP0888199A1	1999-01-07
EP0913215A1	1999-05-06
EP1198435B1	2003-01-15
EP0327226A1	1989-08-09
DE10104289A1	2002-08-01
DD60121A1	1968-02-05