Method for estimating flow pattern of molten steel in continuous casting, temperature measuring device for mold copper plate, method for determining surface defects of continuous cast slab, method for detecting molten steel flow, method for evaluating non-uniformity of heat removal in mold, method for controlling molten steel flow, Quality control method in continuous casting, continuous casting method of steel, estimation method of molten steel flow velocity

摘要

The method for controlling flow pattern of molten steel in continuous casting, comprises the steps of: (a) continuously casting a molten steel injected through an immersion nozzle; (b) measuring temperatures of a copper plate on longer side of the mold in width direction thereof at plurality of points; (c) detecting a flow pattern of the molten steel in the mold based on the time-sequential variations of temperatures of the copper plate at individual measurement points; and (d) controlling the flow pattern to establish a specified pattern on the basis of the detected result. The temperatures of mold copper plate are measured by plurality of temperature measurement elements buried in the rear face of the mold copper plate for continuous casting. The temperature measurement elements are arranged in a range of from 10 to 135 mm distant from the melt surface in the mold in the slab-drawing direction. IMAGE