US 2026/0225153 A1 · DEVICE AND METHOD OF CONTROLLING HEAT EXCHANGE IN A CRYSTALLIZER

Abstract

The invention concerns a device of controlling the heat exchange in a crystallizer (26; 126; 226; 326) in which there are cooling channels (48; 148; 348) and one or more temperature sensors (154, 158, 160; 260; 360) which are arranged at the outlet (148b; 248b) of and/or inside the channels measuring the temperature of a cooling fluid to calculate, for example, the temperature difference ΔT between different values TOUT at the outlet of different channels to identify non-uniformity in the heat exchange during casting. The outlet temperature sensors can be arranged perimetrally on the crystallizer itself or on a separate cover (272; 372a, 372b) that closes a gap (271) between the crystallizer and a relative ingot mould (227). A relative cover with relative kit and relative continuous casting plant and a method for controlling the heat exchange and a use of the device replacing the crystallizers are also described.

Claims20

Dependent claims

A device of controlling a heat exchange in a crystallizer comprising:

(a) a crystallization unit comprising
(a-1) a crystallizer for continuous casting comprising
(a-11) a tubular body comprising at least one wall which defines a longitudinal casting through cavity, and
(a-1.2) a plurality of first cooling channels, wherein an end of said first cooling channels serves as an inlet of the corresponding first cooling channels and another end serves as an outlet;
and
(b) one or a plurality of first temperature sensors
which is/are positioned at the outlet of said first cooling channels to measure a relative outlet temperature TOUT of a cooling fluid that during use of the crystallizer runs through said first cooling channels, and/or
which is/are positioned inside said first cooling channels along a longitudinal extension of the first cooling channels,
wherein in the case of the presence of only one temperature sensor said only one temperature sensor is a multi-point.

6 more elements

A method for controlling a heat exchange in a crystallizer comprising the following steps:

(I) providing a crystallizer with cooling channels applied in at least one wall of said crystallizer;
(II) introducing a cooling fluid into said cooling channels, and performing a casting through said crystallizer;
(III) measuring, for a plurality of said cooling channels an outlet temperature TOUT of the cooling fluid at an outlet of the cooling channels and/or measuring, for at least one of said cooling channels a temperature of the cooling fluid along the cooling channel (TN);
(IV) optionally measuring or determining a temperature TIN at an inlet to said cooling channels;
(V) calculating, a temperature difference ΔT temperature difference AT
(V-1) between at least two outlet temperatures TOUT of two different cooling channels;
and/or
(V-2) between two temperatures measured at different heights of a cooling channel or between two temperatures measured in different cooling channels at the same height;
and optionally
(V-3) between the inlet temperature TIN and the outlet temperature TOUT of a cooling channel;
and/or
(V-4) between the inlet temperature TIN and a temperature TN along a cooling channel;
(VI) identifying irregularities of the temperature difference ΔT;
and
(VII) correcting casting parameters based on the irregularities determined in step (VI).

12 more elements

Dependencies are inferred from the claim text.

Device and method of controlling heat exchange in a crystallizer

Life of this patent

Device and method of controlling heat exchange in a crystallizer

Life of this patent

Abstract

Claims20