Goldschmidt Holding Gmbh

Elektro-thermit Gmbh & Co. Kg

Jan Hantusch

Vladimir Stehle

Konrad Siemer

Werner Angenendt

Sophia Heinig

Thomas Reinicke

Daniel Meckl

A casting mold () consists of two mold halves (), which are intended for setting up on both sides of the welding groove () between two rail ends () to be connected, thereby forming a casting space () representing a cross-sectional profile of the rails. For sealing the casting space () between the rail bodies on both sides of the welding groove () and the wall portions () of the casting mold () that are facing this welding groove, inserted in gaps () are strips consisting of a compound at least containing expandable graphite, which as a result of heat being supplied during a preheating process expands and forms a reliable seal. In comparison with using filler sand at this point, there is the advantage that a much smaller quantity of compound has to be carried along when working on the laid track.

Method for sealing a casting mould for aluminothermic rail weldings

The invention relates to a heat generator for well stimulation, comprising a tubular fuel vessel () with two or more mutually separated, closed segments () arranged in longitudinal succession and each at least partly filled with fuel (), and at least one igniter () for ignition of the fuel in at least one of the segments (), wherein the ends of the segments are connected such that the fuel in a subsequent segment is ignitable owing to the evolution of heat in the course of burnoff of the fuel in a preceding segment. The invention further relates to a process for well stimulation using an inventive heat generator.

Device and method for well stimulation

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Markkleeberg, Germany

Jan Hantusch