Method and device for determining the position of the solidification point
AssigneeSMS Siemag Aktiengesellschaft
InventorsAxel Weyer, Albrecht Girgensohn
Life of this patent
Estimating the term…
Abstract
A method of and a device for determining the position of the solidification point (1a) in a strand (1) during continuous casting of liquid metals, in particular of steel, lead to precise results, while an indirect measurement of a movable amount of a core liquid volume per unit of length is carried out by direct measurement of generated process parameters by force and/or path signals on fixed or adjustable individual support rollers or groups of fixed or adjustable support roller pairs, and based on the measurement values, a calculation model for a momentary position of the solidification point (1a) is produced, based on which, changeable casting parameters are continuously adjusted.
Claims11
A method of determining a position of a solidification point in a strand (1) during a continuous casting of liquid metals and wherein the strand (1) formed in a continuous casting mold (4) and is displaced in support roller segments (5) provided with drive support roller pairs (6), the method comprising the steps of indirectly measuring a movable amount of a core liquid volume by direct measurement of generated process parameters on fixed or adjustable individual support rollers (6a) or groups (7) of fixed or adjustable support roller pairs (7a) with signal transmitters (10) which generate respective force and/or path signals which represent continuously changeable momentary positions of the solidification point in the cast strand (1) produced by continuous movement of the solidification to different locations along an entire solidification stretch during casting of the cast strand;
- producing a calculation model (15) for each momentary position of the solidification point (1a) based on the force and/or path signals;
- and continuously adjusting changeable casting parameters based on respective calculated positions of the solidification point.
A device for determining a position of solidification point (1a) in a strand (1) during a continuous casting of liquid metals and wherein the strand (1) is formed in a continuous casting mold (4) and is displaced in support roller segments (5) or roller pairs (6) provided with driven support rollers (6a), the device comprising hydraulic piston-cylinder units (11) for adjusting the support roller segments;
- signal transmitters (10) provided in an intermediate receptacle (3) that is located between a teeming ladle (2) and the continuous casting mold (4), in the continuous casting mold (4), in the hydraulic piston-cylinder units (11) of the support roller segments (5) and/or on adjustable, free-running, or driven individual rollers (6a) for generating force and/or path signals which represent continuously changeable temporary positions of the solidification point in the cast strand (1) produced by continuous movement of the solidification point to different locations along an entire solidification stretch during casting of the cast strand;
- and data processing unit (12) for processing force and/or path signals and for producing a calculation model (15) used for calculating respective momentary positions of the solidification point based on which changeable casting parameters are continuously adjusted.
Dependencies are inferred from the claim text.