Abstract:
Disclosed are a method and a device for continuously casting billets (1), among others, which are made of liquid metals, particularly steel materials. According to the invention, heat is removed in a primary cooling zone (4), further cooling taking place in a secondary cooling zone (7) with the aid of a dynamic spraying system (6) by means of nozzles (8) that impinge the width (9) and the metallurgical length (10a) of the billet while the heat distribution is determined and the surface temperature is measured by temporarily sampling the billet surface. The aim of the invention is to obtain a temperature curve which is advantageous for further processing across the entire cross section of the billet. Said aim is achieved by the fact that the dynamic spraying system (6) is functionally controlled in the form of the distribution of the water quantity and the pressure distribution or pulse distribution across the width (9) and length (10a) of the billet via the discharge temperature which is determined by verifying the surface temperature at the end (10b) of the metallurgical length (10a) of the billet so as to obtain a temperature curve (20) calculated for the billet length (10a) and/or the billet width (9).
Abstract:
Dip drain (Tauschausguss, sic) for molten metal, especially steel materials in an extrusion device, which dips into the extrusion mold, where the melt flows from a preordered distribution vessel with air cutoff under the liquid level of the extrusion mold, including a shaft (2) with a unifom internal channel (3) which opens out into a transverse channel (4) with two exit holes (4a,4b) perpendicular to shaft axis (2a). In using a molten alloy steel the orifice (5) in horizontal distribution channel (8) has a horizontal oval cross-section.
Abstract:
Continuous casting of liquid metals, especially liquid steel, comprises partially reducing the heat transfer number alpha (W/m2.K) during cooling in the region of the heat flow shadow of the submerged nozzle (1) so that an isotherm lying in a horizontal plane produces a uniform strand shell on the periphery (20). An Independent claim is also included for a device for the continuous casting of liquid metals, especially liquid steel, comprising a mold (2) and a submerged nozzle (1) which can be adjusted below a constant casting mirror and reaches up to the funnel end between copper plates (2a).
Abstract:
A system provided in a high-speed continuous casting plant for casting a metallic strand for automatically operating the high-speed continuous casting plant. In the system, the stopping or slide movement, the modification of the steel level, the heat currents through the mold walls, the temperature of the liquid metal and the drawing-off speed are measured over the casting time, supplied to a computer and compared with predetermined limit values for an automatic operating mode.