Roll casting method with cryogenic cooling of the casting rolls
An ingotless rolling, direct technology, applied in the field of direct billet rolling, which can solve problems such as quality problems, hydrogen explosions, serious failures, etc.
Inactive Publication Date: 2014-06-18
PRIMETALS TECH GERMANY
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Problems solved by technology
Because this can - depending on the metal used - cause quality problems or even serious failures (e.g. for non-ferrous metals hydrogen gas formation with attendant explosion hazard)
Method used
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Embodiment Construction
[0032] according to figure 1 , the slab direct rolling device includes a metal mold area 1 . The molded area 1 is bounded on one side by a first castless rolling stock 2 . During the operation of the direct strand rolling plant, the first castless rolling part 2 rotates about the first axis of rotation 3 . according to figure 1 , there is also a second casting 2' whose axis of rotation 3' extends parallel to the first axis of rotation 3 of the first casting 2. In operation, the second rolling stock 2' rotates counter-rotating relative to the first rolling stock 2.
[0033] A metal melt 4 is poured into the mold area 1 . The molten metal 4 solidifies at the edges - especially on the outer surface of the castless rolling part 2, 2'. The castless rolling stock 2, 2' is rotated into the casting zone 1 from above. As a result, the metal strip 4' produced by the solidification of the metal melt 4 is guided out of the casting zone 1. Metal type can be determined on demand...
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A molten metal (4) is poured into a mold region (1) which is delimited on at least one side by a first casting roll (2) that rotates about a first rotational axis (3). A metal strand (4') which is produced by the solidification of the molten metal (4) is conveyed out of the mold region (1). A liquid coolant (7) is applied to the surface of the first casting roll (2) by a first cooling device (5) by means of a number of first coolant applying devices (6). The coolant (7) is fed to the first coolant applying devices (6) via first coolant lines (8). The coolant is inert with respect to the molten metal (4), said coolant having a standard boiling point below 20 DEG C, in particular below -20 DEG C, with respect to a normal air pressure, and an operating temperature which lies at an operating boiling point or lower. The operating boiling point relates to an operating pressure (p) at which the coolant (7) is supplied. An actual property of the first casting roll (2) or an actual property of the metal strand (4') is detected by means of at least one sensor (15). The actual property is fed to a control device (14) of the first cooling device (5). The control device (14) automatically ascertains a control state of the first cooling device (5) dependent on the actual property fed to said control device and a corresponding target property and controls the first cooling device (5) in a corresponding manner.
Description
technical field [0001] The invention relates to a casting billet direct rolling method, [0002] - wherein the metal melt is poured into a mold area delimited on at least one side by the first castless rolling which rotates about a horizontal first axis of rotation and which will result from the solidification of the metal melt The metal strips are derived from the metal type area, [0003] - wherein, by means of the first cooling device, a liquid cooling medium is applied to the surface of the first casting without casting by means of a number of cooling medium application devices, [0004] - wherein the cooling medium is delivered to the first cooling medium application device via the first cooling medium pipeline, [0005] - wherein the cooling medium is inert with respect to the metal melt, the cooling medium has a normal boiling point below 20°C, in particular below -20°C with reference to normal pressure, and an operating temperature at or below the working boiling poi...
Claims
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IPC IPC(8): B22D11/06B22D11/22
CPCB22D11/06B22D11/22B22D11/0622B22D11/0682
Inventor 约翰内斯·达格内托马斯·马楚拉特京特·温特
Owner PRIMETALS TECH GERMANY