Horizontal continuous casting with oscillating mould for high-alloy steels and super alloys

Ziel

The production of these steels and alloys is normally carried out in a vacuum furnace. Casting into conventional mould poses very complex problems with regard to the vacuum or protective atmosphere. In addition, the homogeneity of the ingots is not certain because of segration phenomena during solidification. The hot mechanical strength of these steels puts a strict limit on the use of the normal curved-mould continuous casting process. It would be possible to use vertical continuous casting with a vertical bloom but the investment costs would be such as to make this process uneconomic for the quantities of steel involved. Krupp Stahl AG (including Krupp Industrie und Stahlbau AG) is hoping to develop: - a laboratory-scale horizontal casting machine, - subsequently, a pilot-scale horizontal casting machine. The initial machine would cast blooms 100 mm square while the other machine would be developed with a view to the industrial production of other sections (300 mm squares and 400 mm diameter rounds).

The innovatory aspects of these machines are as follows: (1) the concept and development of a "liquid metal tundish reservoir" under vacuum or under protective gas, (2) the development of a mould oscillating at frequency to be determined, (3) the development of a connection between the tundish and the mould which is both leak-tight and capable of operating at temperature of the liquid metal In addition, the use of a flux or rotating process (for the casting of rounds) could be envisaged.

The theoretical and practical work would comprise the following simoultaneous or successive phases: (1) Theoretical study of casting parameters (speed, frequency and amplitude of the oscillations, geometry and material of the casting nozzle) and of the oscillation parameters (variation in metal temperature in the tundish-mould connection, cooling in the mould and downstream). (2) Engineering study, development and commissioning of a laboratory-scale machine, and subsequently a pilot machine. The work will be carried out at the Siegen-Gesweid steelworks of the Krupp Stahl Company.

Programm/Programme

ECSC-STEELDEM 2C - Programme (ECSC) "pilot and demonstration projects in the iron and steel industry", 1988-1992

Thema/Themen

T2 - Continuous casting

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

DEM - Demonstration contracts

Koordinator

KRUPP STAHL

EU-Beitrag

Keine Daten

Adresse

Geisweider Strasse
57078 SIEGEN
Deutschland

Gesamtkosten